Maximum Power Point Tracking in Solar PV systems using Artificial Neural Networks

Volume 6 Issue 4 November - January 2019

Research Paper

Maximum Power Point Tracking in Solar PV systems using Artificial Neural Networks

Jyotsana Pandey*

* Department of Electrical Engineering, Raipur Institute of Technology, Raipur, Chhattisgarh, India.

Pandey, J. (2019). Maximum Power Point Tracking in Solar PV systems using Artificial Neural Networks i-manager’s Journal on Power Systems Engineering, 6(4), 45-52. https://doi.org/10.26634/jps.6.4.16409

Abstract

Maximum power point tracking (MPPT) is critical in the design and use of solar PV cells. However, attaining MPPT is often challenging due to the random fluctuations in solar irradiation. Off late Artificial Neural Networks (ANN) are being used for maximum power point tracking of solar PV cells. In the proposed work, the Levenberg-Marqardt (LM) algorithm has been used to train a neural network with training features. Subsequently, the neural network is tested and an accuracy of 98.84% has been achieved. The high accuracy can be attributed to the structuring of the training data and the effectiveness of the Levenberg Marqardt back-propagation algorithm which is both fast and stable. The performance of the system has been evaluated in terms of the number of epochs for training, the mean absolute percentage error, accuracy and regression.

Distribution Network Reconfiguration using GA & BPSO

Volume 6 Issue 4 November - January 2019

Research Paper

Distribution Network Reconfiguration using GA & BPSO

P. V. Prasad*, M. Balasubba Reddy**

*_** Department of Electrical and Electronics Engineering, Chaitanya Bharathi Institute of Technology(A), Hyderabad, India.

Prasad, P.V., and Reddy, M. B. S. (2019). Distribution Network Reconfiguration using GA & BPSO. i-manager’s Journal on Power Systems Engineering, 6(4), 37-44. https://doi.org/10.26634/jps.6.4.15802

Abstract

As increase in the high demand utilization of electrical energy over few decades the power loss issue is persevered. In order to minimize the power losses, various methods are followed in distribution system such as capacitor placement, distribution generator placement and proper conductor selection methods. In all these methods, lot of money is to be invested to decrease the losses. The network reconfiguration method is one, where investment for loss reduction is minimum. By changing the position of sectionalizing and the tie switches the distribution system reconfiguration is done to minimize the power losses. In this paper, Genetic Algorithm (GA) and Binary Particle Swarm Optimization (BPSO) techniques are used for distribution system reconfiguration. The performance of the two algorithms is tested with two different test systems i.e. 33 and 69 node radial distribution systems. The outcomes illustrate that after reconfiguration the power loss is minimized and voltage profile is improved. Finally the results of the two algorithms are compared and found that BPSO has given better results compared to Genetic Algorithm.

Peak Power Tracking Technique for a Small-Scale Photovoltaic System

Volume 6 Issue 4 November - January 2019

Research Paper

Peak Power Tracking Technique for a Small-Scale Photovoltaic System

Amine Daoud*

* Department of Electronics, Faculty of Electrical Engineering, University of Sciences and Technology of Oran, Oran, Algeria.

Daoud, A. (2019). Peak Power Tracking Technique for a Small-Scale Photovoltaic System. i-manager’s Journal on Power Systems Engineering, 6(4), 22-36. https://doi.org/10.26634/jps.6.4.16047

Abstract

A photovoltaic (PV) generator can directly transform the sun's rays into usable electric power. The power-voltage characteristic of PV generator is highly nonlinear and its optimal power point varies with sunlight intensity and temperature. Thus, to increase the efficiency of a PV system, it is important to track the optimal power point instantly. This paper presents a simple variable step-size maximum power point tracking (MPPT) technique for a small-scale PV system. The latter is composed of a PV array, a DC/DC power converter, and a DC motor-pump. Furthermore, using this technique, only the output voltage of the switching converter needs to be sensed in order to track the optimal power point. Compared with classical Perturbation & Observation (P&O) technique, the proposed MPPT technique can largely improve the MPPT efficiency and the total volume of water pumped a day. Also for comparison purpose, the artificial neural network (ANN) based MPPT technique is addressed in this manuscript. Moreover, the MPPT techniques considered in this study are applied to a solar-powered water pumping system under different climate conditions. Finally, mathematical modeling and computer simulations of such small-scale PV system are performed using the MATLAB environment.

Mitigation of Torsional Oscillations via Interval Type-2 Fuzzy Logic Based Chopper Rectifier Controlled Braking Resistor

Volume 6 Issue 4 November - January 2019

Research Paper

Mitigation of Torsional Oscillations via Interval Type-2 Fuzzy Logic Based Chopper Rectifier Controlled Braking Resistor

M. Fayez*, M. Mandor**, M. El-Hadidy***, F. Bendary****

* Cairo Electricity Production Company (CEPC), Cairo, Egypt.

**,**** Electrical Engineering Department, Faculty of Engineering Shoubra, Benha University, Cairo, Egypt.

*** Egyptian Electricity Holding Company (EEHC), Cairo, Egypt.

Fayez, M., Mandor, M., El-Hadidy, M., and Bendary, F. M. (2019). Mitigation of Torsional Oscillations via Interval Type-2 Fuzzy Logic Based Chopper Rectifier Controlled Braking Resistor. i-manager’s Journal on Power Systems Engineering, 6(4), 11-21.https://doi.org/10.26634/jps.6.4.16079

Abstract

Autoreclosrure is an indispensable protection scheme firstly designed for enhancing the power system stability especially in countries with high isokeraunic levels. Its unsuccessful operation would much more likely cause dire consequences on the thermal power plants in the vicinity. Therefore, almost all major utility-scale turbine-generator suppliers have been expressing concern about performing autoreclosing activities near the generator bus. A resistor brake interfaced to the grid through power electronic devices is a special FACTS controller. A more recent resistor model, namely Chopper Rectifier Controlled Braking Resistor controlled via Interval Type-2 fuzzy logic controller is proposed in this work for mitigation of torsional oscillations resulting from unsuccessful reclosure. Local control input signal synthesized from the generator shaft speed is employed in this work for the proposed controller. For testing the effectiveness of the proposed scheme, non-linear time-domain simulation study is performed on the Western System Coordinated Council, 3-machine 9-bus system via MATLAB/Simulink-based modelling and simulation platform. Comparative simulation studies of the test system after being subjected to unsuccessful reclosure of three-phase to ground fault condition should demonstrate the effectiveness of proposed scheme. From the time domain simulation results, the torsional torque profiles for both machines reach an excellent level due to the implementation of the proposed scheme.

Different Energy Conservation Techniques for Various Operations in Opencast Mine

Volume 6 Issue 4 November - January 2019

Article

Different Energy Conservation Techniques for Various Operations in Opencast Mine

Virendra Kumar*, Arnab Bhuiya **, Aditi Chatterjee***, S. K. Chaulya****, Gautam Banerjee*****

*, ***_***** CSIR-Central Institute of Mining & Fuel Research, Dhanbad, Jharkhand, India.

** M. Tech. Scholar of Mine Machinery, IIT-ISMS, Dhanbad, Jharkhand, India

Kumar, V., Bhuiya, A., Chaaterji, A., Chaulya, S. K., and Banerjee, G. (2019). Different Energy Conservation Techniques for Various Operations In Opencast Mine. i-manager’s Journal on Power Systems Engineering, 6(4), 1-10.https://doi.org/10.26634/jps.6.4.15845

Abstract

Conservation of natural resources by increasing the energy efficiency is the primary objective. With increment in the power requirement, there is substantial pressure on innovation and designers are required to take into account the upgrade energy efficient electrical systems. In the current circumstance, the need for energy is substantial, and control of resources is constrained; considering the mining business the foundation of development in any nation requires a great efforts on the sustenance of electric power. The principle objective of this study is the energy conservation in mines by supplanting conventional system with the current innovative systems that would greatly reduce utilization of electricity. In this study, the different electrical equipment that are utilized in the opencast coal mines are recorded with their details and operations. The recommendations are given as per the improvement of PF (Power Factor) of different machines using different customary techniques in the opencast mines where electrical vitality is being squandered. The protection process can be actualized in various mining perspectives and devices like brightening, haulers, transports, penetrating and impacting equipment's, cutting apparatuses and crushers, dragline, dumper, scoop, scrubber and other electrical equipment.

Spectacular Simulation Review - Analysis of different wind turbine companies by Weibull Analysis

Volume 6 Issue 3 August - October 2018

Review Paper

Spectacular Simulation Review - Analysis of different wind turbine companies by Weibull Analysis

Sunil Kumar Jilledi*, Shalini J.**, Ashok Kumar Mechiri***

* Research Scholar, OPJS University, Churu, India, and Lecturer, Department of Electrical and computer Engineering, Mainefhi College of Engineering and Technology, Eritrea, East Africa

** Assistant Professor, Department of Dairy Engineering, Dairy Technology College, Sri Venkateswara Veterinary University, Andhra Pradesh, India.

***Associate Professor, Eritrea Institute of Technology, Asmara, Eritrea, East Africa.

Jilledi, S. K., Shalini, J., and Mechiri, A. K., (2018). Simulation Review - Analysis of Different Wind Turbine Companies by Wei bull Analysis for Powers Tacular. i-manager’s Journal on Power Systems Engineering, 6(3), 32-42.https://doi.org/10.26634/jps.6.3.15709

Abstract

Renewable energy sources are playing a vital role in the power sector. Among the renewable energy sources, wind energy is playing a vital role. As the power of wind energy system increases, the control of their system becomes complex. Active and reactive power becomes increasingly more important from a system to satisfy the load demand for the consumers. To improve the power production, in the market, many companies are in the competition. Weibull analysis is used for analysis of wind speed. Based on the wind probability distribution function (pdf), the power curve and power distribution is calculated. This paper provides the detail set of power production of different types of wind power plants. A case study has been performed using simulation software by considering the base data of the companies.

Reliability Assessment of Radial Distribution System with Different Automation Schemes of One and Half Breaker Substation

Volume 6 Issue 3 August - October 2018

Research Paper

Reliability Assessment of Radial Distribution System with Different Automation Schemes of One and Half Breaker Substation

S. Deepti*, E. Vidya Sagar **

* Associate Professor, Department of Electrical and Electronics Engineering, Bhoj Reddy Engineering for Women, Hyderabad, Telangana India.

** Associate Professor, Department of Electrical Engineering, Osmania University, Hyderabad, Telangana, India.

Deepti, S., and Sagar, E. V. (2018). Reliability Assessment of Radial Distribution System with Different Automation Schemes of One and Half Breaker Substation. i-manager’s Journal on Power Systems Engineering, 6(3), 26-31.https://doi.org/10.26634/jps.6.3.15306

Abstract

A radial distribution system consists of 33/11 kV substation, 11kV feeders, distribution transformers, service mains and load points. The reliability of the radial distribution system has a significant influence on overall power system reliability. One of the method to improve the reliability of distribution system is automating both the substation and feeders. The automation process will reduce the restoration time after occurrence of fault and hence the annual average outage duration of load points decreases. In this paper (i) the effect of centralized star and redundant star automation schemes on load points of one and half breaker substation, (ii) the reliability indices of 11 kV radial feeder for non-automated and iii) automated scheme are evaluated. Further, the reliability indices of the complete distribution system for the above said cases are evaluated. Reliability of substation is evaluated using cut-set method and reliability of feeder is evaluated using Failure Mode and Effective Analysis Method (FMEA). Results obtained shows that redundant star automation scheme is better over the centralized star automation scheme. It is also concluded from the results that redundant star substation and feeder automation have more effective impact on distribution reliability.

Performance of Condensate-Vacuum-and-Extraction Pump of BSP with Process Optimization and Optimum Neural Network based Learning System

Volume 6 Issue 3 August - October 2018

Research Paper

Performance of Condensate-Vacuum-and-Extraction Pump of BSP with Process Optimization and Optimum Neural Network based Learning System

Sanjeev Karmakar*, Gyan Ranjan Biswal**

* Associate professor, Bhilai Institute of Technology , Bhilai House, Durg, Chhattisgarh, India.

** Assistant Professor, Department of Electrical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India.

Karmakar, S., and Biswal, R.G (2018). Performance of Condensate-Vacuum-and-Extraction Pump of BSP with Process Optimization and Optimum Neural Network based Learning System. i-manager’s Journal on Power Systems Engineering, 6(3), 15-25. https://doi.org/10.26634/jps.6.3.15305

Abstract

Surface condenser of a power generation plant experiences maximum loss in thermal efficiency (in terms of electrical power output), typically more than 40% of the total generation capacity. The manuscript brings a novel Control and Instrumentation (C&I) approach to enhance the performance of surface condensing unit along with the design issues. This paper presents a control algorithm to get better performance of surface condensation section. The system is designed for maintaining levels of the optimal selection of condensate vacuum pump and condensate extraction pump to minimize the pressure loss involved with the system/section. The work includes a comparison between all the systems presented for system reliability. The 3-parameters Weibull distribution function is uniquely considered for evaluating the design issues of condenser module. It includes the location parameter for identification of faults and execution of operation in real-time. In addition, a process learning system is developed to enhance the performance supervision of the surface condenser in real-time. Effectiveness of the proposed model is validated on real-time automation platform based on specifications of IEEE C37.1-2007, IEC 61131-3 and IEEE 1413-2010.

Impacts of Micro-grid and DG on Radial Distribution Network

Volume 6 Issue 3 August - October 2018

Research Paper

Impacts of Micro-grid and DG on Radial Distribution Network

Rohit Nandi *, Rahul Pathak**

* _** Assistant Professor, Dr. Akhilesh Das Gupta Institute of technology and Management, Shastri park, New Delhi, India.

Nandi, R., and Pathak, R. (2018). Impacts of Micro-grid and DG on Radial Distribution Network. i-manager’s Journal on Power Systems Engineering, 6(3), 7-14. https://doi.org/10.26634/jps.6.3.15500

Abstract

Micro-grid and DG (Distributed generator) plays a crucial role in modern power systems. The large network of any power system ends at distribution side where high current and low voltage level is suitable for operation. This paper briefly describes about different type of DG system and micro-grid components. It covers brief idea about micro-grid controlling scheme and its mode of operation. The effect of external power source and its impacts on load flow study have been demonstrated on IEEE 33 bus radial distribution system. The techniques used for selection and allocation of DG have been mentioned and used analysis based on proposed radial distribution model. The variation of parameters (i.e. voltage and active power loss) after introduction of external active power units have been represented in this paper

Correction of Power Factor and Balancing of 3 Phase Unbalanced Load

Volume 6 Issue 3 August - October 2018

Research Paper

Correction of Power Factor and Balancing of 3 Phase Unbalanced Load

S. G. Ankaliki*, Akshay Hegde**, Sanjeeth Amminabhavi ***

* Professor & Head, Department of Electrical & Electronics Engineering, SDM College of Engineering and Technology, Dharwad, India.

**_*** PG Scholar, Department of Electrical & Electronics Engineering,SDM College of Engineering and Technology, Dharwad, India.

Ankaliki, G. S., Hegde, A., and Amminabhavi, S. (2018). Power Factor Correction and Balancing of Unbalanced Load. i-manager’s Journal on Power Systems Engineering, 6(3), 1-6. https://doi.org/10.26634/jps.6.3.15482

Abstract

This paper presents correction of power factor and balancing of three phase unbalanced load. The analytical way of correction of power factor and balancing the three phase unbalanced delta connected load is carried out. The analytical results are compared with Matlab simulation results. Simulated results reveal that after correction of power factor and balancing of three phase unbalanced load, all three supply currents are in phase with their respective phase voltages and equal in magnitude resulting in a balanced load on supply system.

Design and Development of Smart Power Module for Reliable Power Supply with Power Quality Feature

Volume 6 Issue 2 May - July 2018

Research Paper

Design and Development of Smart Power Module for Reliable Power Supply with Power Quality Feature

S. Narasimha*, B. Jhansi Rani**

* Professor and Head, Department of Electrical and Electronics Engineering, TKR College of Engineering and Technology (Autonomous), Hyderabad, Telangana, India.

** PG Scholar, Department of Electrical and Electronics Engineering, TKR College of Engineering and Technology (Autonomous), Hyderabad, Telangana, India.

Narasimha, S., and Rani, B. J. (2018). Design and Development of Smart Power Module for Reliable Power Supply with Power Quality Feature. i-manager’s Journal on Power Systems Engineering, 6(2), 37-44. https://doi.org/10.26634/jps.6.2.15107

Abstract

Electrical power demand has been increasing day by day in the all areas, where efforts are made to reach the power demand using conventional and nonconventional sources. The main objective of this paper is to provide uninterruptable quality power supply to the customers by selecting the supply from renewable energy sources such as battery bank and local grid. Initially, the load gets power supply from the renewable energy sources (solar, wind), and in its absence it automatically switches over to the local grid supply or to the battery bank. Therefore, the proposed smart power module can improve the system performance and efficiency with low cost, no pollution, and noise presented in this paper. The functions that are displayed on the LCD, has been designed, examined in real time environment and evaluated for the 5 kW load in MATLAB/Simulink environment.

Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM

Volume 6 Issue 2 May - July 2018

Research Paper

Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM

Srinivas Singirikonda*, Geetha Chapal**

* Assistant Professor, Department of Electrical and Electronics Engineering, TKRCET, JNTUH, Hyderabad, India.

** M.Tech Scholar, Department of Electrical and Electronics Engineering, TKRCET, JNTUH, Hyderabad, India.

Singirikonda, S., and Chapal, G. (2018). Parallel Operation of Two Single-Phase Rectifiers with Three-Phase Inverter by Implementing Generalized SVPWM. i-manager’s Journal on Power Systems Engineering, 6(2), 28-36.https://doi.org/10.26634/jps.6.2.15060

Abstract

In this paper, a parallel five-leg (P5L) operation of two single-phase rectifiers with three-phase inverter by implementing generalized Space Vector Pulse Width Modulation (SVPWM) is proposed, consisting of two parallel 1-phase half-bridge rectifiers with shared leg. This configuration facilitates the continuity of power flow among the switches though if one switch fails to operate, and reduces the power losses at both rectifier and inverter circuits. The proposed topology is evaluated by connecting 3-phase Induction Motor (IM), which is controlled by SVPWM. The SVPWM is a generalized modulation of PWM derived from Sinusoidal Pulse Width Modulation (SPWM) combination of common-mode voltage. It facilitates the outcomes of the conventional SVPWM with the generalized SVPWM. This power conversion is attained by maintaining the DC-link voltage by using capacitors. This strategy facilitates the balancing of current and voltage at the DC-link. A comparative analysis of machine characteristics with SPWM and SVPWM topology is done. The MATLAB simulation results are analyzed and represented.

Predictive Current Control for Zero D-Axis Current Control of PMSG Based Wind Energy Conversion System

Volume 6 Issue 2 May - July 2018

Research Paper

Predictive Current Control for Zero D-Axis Current Control of PMSG Based Wind Energy Conversion System

Tripura Pidikiti *, G. Tulasi Ram Das **

* Assistant Professor, Department of Electrical and Electronics Engineering, RVR & JC College of Engineering, Guntur, Andra Pradesh,India.

** Professor, Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University College of Engineering, Hyderabad, India.

Pidikiti, T., and Das, G.T.R. (2018). Predictive Current Control for Zero D-Axis Current Control of PMSG Based Wind Energy Conversion System. i-manager’s Journal on Power Systems Engineering, 6(2), 20-27. https://doi.org/10.26634/jps.6.2.15295

Abstract

In this paper, the Predictive Current Control (PCC) strategy for back-to-back (BTB) voltage source converters used in Permanent Magnet Synchronous Generator (PMSG), Wind Energy Conversion System (WECS) was explained. PCC is used to control the system, where the discrete time models of the BTB converters are used to predict the future state of control variables. Two cost functions are used to evaluate these predictions, and switching states which will minimize these cost functions will be selected and applied to generator side and grid side converter. The control requirements like Maximum Power Point Tracking (MPPT), Direct Current (DC) link voltage regulation and reactive power generation to the grid are satisfied by the PCC approach. Complete procedure for the MATLAB/Simulink implementation of predictive model, extrapolation and cost function employed in the implementation of PCC scheme are presented along with the comparison of the performance of Wind Energy Conversion System (PMSG WECS) and back-to-back (BTB) converter with conventional control technique.

Description and Examination of Optima Power Flow Using Traditional and Stochastic Optimization Techniques

Volume 6 Issue 2 May - July 2018

Research Paper

Description and Examination of Optima Power Flow Using Traditional and Stochastic Optimization Techniques

Ragaleela D.*, Sivanagaraju S.**

* Senior Assistant Professor, Department of Electrical and Electronics Engineering, PVPSIT, Vijayawada, Andhra Pradesh, India.

** Professor, Department of Electrical and Electronics Engineering, JNTUK, Kakinada, Andhra Pradesh, India.

Ragaleela, D and Sivanagaraju, S. (2018). Description and Examination Of Optima Power Flow Using Traditional and Stochastic Optimization Techniques. i-manager’s Journal on Power Systems Engineering, 6(2), 12-19. https://doi.org/10.26634/jps.6.2.14934

Abstract

In modern power systems, optima power flow plays a crucial role in optimizing different types of objective functions for progress and outlining. The purpose of Optima Power Flow (OPF) problem is to attain the optima solution of a considered test system objective function, like fuel cost and loss minimization by fine tuning the power system control variables. In this paper a new stochastic hybrid method, Particle Movement Bee Colony Algorithm (PMBCA) based on Particle Swarm Optimization (PSO) and Honey Bee Colony (HBC) is proposed in addition to existing methods. Comparisons of various traditional and heuristic optimization methods are considered to solve the OPF problems. The utility and efficacy of suggested algorithms is exemplarily tested on the IEEE 30-bus test system. Results prove that the PMBCA algorithm gives better solution and convergence characteristics to enhance the system performance compared with other methods.

A Synchronized-Phasor-Measurements-Based Wide Area Protection Scheme for Transmission Lines

Volume 6 Issue 2 May - July 2018

Research Paper

A Synchronized-Phasor-Measurements-Based Wide Area Protection Scheme for Transmission Lines

Mohamed A. Ebrahim *, Fady Wadie**, Mousa A. Abd-Allah ***

* Associate Professor, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

** Assistant Lecturer, Faculty of Engineering, Egyptian Russian University, Badr City, Egypt.

*** Professor, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

Ebrahim, M. A., Wadie, F., and Abd-Allah, M.A. (2018). A wide-area based Fault detection scheme for series compensated transmission networks. i-manager’s Journal on Power Systems Engineering, 6(2), 1-11. https://doi.org/10.26634/jps.6.2.14850

Abstract

As a result of the problems facing conventional back-up protection, wide area backup protection schemes had shown to be a great alternative. For this reason, a new fault detection scheme is presented in this paper as a part of a wide area backup protection. The scheme relies on the Loss of Synchronism of Buses Index (LSBI), which monitors the sent and received positive sequence power across each lines. The phasor measurement unit provides the positive sequence measurements which are used to calculate the positive sequence powers sent and received at the terminals of each line. The LSBI seeks to find the power consumed within each line by finding the difference between these powers. A predefined threshold value is set for every line in order to be compared for the LSBI of the line to reach decision whether there is a fault on this line or not. The proposed scheme was tested upon New-England NE 39-bus and Western System Coordinating Council (WSCC) 9-bus systems using MATLAB/Simulink software package. The scheme showed its ability to operate correctly even in critical cases such as voltage or current inversion. The proposed scheme proved to be reliable in operation and free of mathematical errors.

Design of a Grid Connected PV System and Effect of Various Parameters on Energy Generation

Volume 6 Issue 1 February - April 2018

Research Paper

Design of a Grid Connected PV System and Effect of Various Parameters on Energy Generation

Namita P. Deodhe *, Deepak Bankar**

* M.Tech Scholar, Department of Electrical Engineering, Bharati Vidyapeeth College of Engineering (Deemed to be University), Pune, Maharashtra, India.

** Professor and Head, Department of Electrical Engineering, Bharati Vidyapeeth College of Engineering , (Deemed to be University),Pune, Maharashtra, India.

Deodhe, P. N., and Bankar, D. (2018). Design of a Grid Connected PV System and Effect of Various Parameters on Energy Generation. i-manager’s Journal on Power Systems Engineering, 6(1), 41-48. https://doi.org/10.26634/jps.6.1.14023

Abstract

Power is one of the key infrastructures for growth of industry and economy. Over the past two years, India's economy expanded at an average annual rate of 7.3% to 7.6%, placing it among the top five fastest growing nations in the world. To promote the grid connected solar power plant among the residential areas is focused now a days. Photovoltaic system simulation software is very significant to estimate the output from photovoltaic system. This paper introduces PVSyst software for sizing of grid connected photovoltaic system at Bharti Vidyapeeth Deemed University College of Engineering, Pune, Maharashtra, India.

This paper introduces the detailed system design (PV array and Inverter), and system output and system losses are studied using PVSyst software. Also, loss diagram of PV array and Inverter is obtained. By changing tilt angle, optimum output is achieved for the system. Plant of AC capacity of 100kW is simulated in the software and it was found that the optimal energy generation will be at 18° tilt angle, which can provide electricity to university throughout the year. Pitch is varied to get optimum output. Also simulations for various PV cell technologies are carried out.

Comparative Analysis of Harmonics by Shunt Active Filter using Resonant Current Control in Distribution System

Volume 6 Issue 1 February - April 2018

Research Paper

Comparative Analysis of Harmonics by Shunt Active Filter using Resonant Current Control in Distribution System

B. Pattabhiram*, M. Sai Veerraju **

* PG Scholar, Department of Electrical and Electronics Engineering, SRKR engineering College, Bhimavaram, Andhra Pradesh, India.

** Professor, Department of Electrical and Electronics Engineering, SRKR Engineering College, Bhimavaram, Andhra Pradesh, India.

Pattabhiram , B., and Veerraju, M. S., (2018). Comparative Analysis of Harmonics by Shunt Active Filter using Resonant Current Control in Distribution System. i-manager’s Journal on Power Systems Engineering, 6(1), 35-40.https://doi.org/10.26634/jps.6.1.14306

Abstract

Wide-range utilization of nonlinear loads creates harmonic resonance issues in radial distribution system. This paper presents a comparative analysis of harmonic resonance using Proportional Resonant(PR) controller and Fuzzy controller based active filter, by using resonant current control. For controlling active filter as an approximately pure harmonic conductance, collections of different parallel band-pass filters are tuned for resonant current controller at harmonic frequencies. The MATLAB/SIMULINK results demonstrate that the fuzzy logic controller based active filter improves higher damping performance compared with PR controller.

A New Hybrid Cuckoo Search-Artificial Bee Colony Approach for Optimal Placing of UPFC Considering Contingencies

Volume 6 Issue 1 February - April 2018

Research Paper

A New Hybrid Cuckoo Search-Artificial Bee Colony Approach for Optimal Placing of UPFC Considering Contingencies

Siva Sankar Akumalla*, Bharath Kumar Polineni **, Sujatha Peddakotla ***

* Senior Lecturer, Department of Electrical and Electronics Engineering, Government Polytechnic, Proddatur, Kadapa, Andhra Pradesh , India.

** Lecturer, Department of Electrical and Electronics Engineering, JNTUA College of Engineering, Ananthapuramu, Andhra Pradesh, India.

*** Professor, Department of Electrical and Electronics Engineering, JNTUA College of Engineering, Ananthapuramu, Andhra Pradesh, India.

Akumalla, S, S., Polineni, B. K., and Peddakotla, S. (2018). A New Hybrid Cuckoo Search-Artificial Bee Colony Approach for Optimal Placing of UPFC Considering Contingencies. i-manager’s Journal on Power Systems Engineering, 6(1), 26-34.https://doi.org/10.26634/jps.6.1.14308

Abstract

The Optimal Power Flow (OPF) is a specialised area of power system, that generally requires solving nonlinear optimization problems. The OPF formulation, when includes generators' operating constraints and Flexible AC Transmission Systems (FACTS) devices becomes profoundly complicate multi-objective optimization problem. To target the multi-objective solution, Metaheuristic algorithms have been favored as they give promising results in many such optimization cases. Herein, developing and evaluating a new hybrid method, such as a blend of two simulation-based metaheuristic methods, Cuckoo-Search (CS) and Artificial Bee Colony (ABC) algorithms was focussed. This approach helps the engineer in best locating Unified Power Flow Controller (UPFC), the versatile FACTS' controller, in a multimachine power system to preserve voltage stability and reduce the line power losses under contingencies. The CS algorithm, which was first presented in the mid of 2009 as a novel optimization technique, is motivated by the compel behavior, clearly, brood parasitism of the cuckoos. Here, the ABC feature alters the levy flight behavior and, in consequence, the searching ability of the CS algorithm is enhanced. The test results, when examined on IEEE 30-bus benchmark system, reveal the notable going of the combined approach over the original CS method.

Pattern and Implementation of 800VA Uninterrupted Power Supply

Volume 6 Issue 1 February - April 2018

Research Paper

Pattern and Implementation of 800VA Uninterrupted Power Supply

S. Narasimha*, P. Laxman**

* Professor, Department of Electrical and Electronics Engineering, TKR College of Engineering and Technology (Autonomous), Hyderabad, India.

** Assistant Professor, Department of Electrical and Electronics Engineering, Scient Institute of Technology, Hyderabad, India.

Narasimha, S., and Lxman, P. (2018). Pattern and Implementation of 800VA Uninterrupted Power Supply. i-manager’s Journal on Power Systems Engineering, 6(1), 14-25. https://doi.org/10.26634/jps.6.1.14205

Abstract

In this paper, the proposed design is made to use the home appliances even in the absence of Alternating Current (AC) main power supply. The main characteristics of the design is that it produces pure sine wave as output without any harmonic distortion in Uninterrupted Power Supply(UPS). The change over time is very small which will result in no reboot of the computer connected to the UPS equipment. In this work, the 800 VA, single phase UPS system has been designed and implemented successfully. It has been examined with various types of loads with low cost.

Multi Area Load Frequency Control of a Hybrid Power System with Advanced Machine Learning Controller: Case Study of Andhra Pradesh

Volume 6 Issue 1 February - April 2018

Research Paper

Multi Area Load Frequency Control of a Hybrid Power System with Advanced Machine Learning Controller: Case Study of Andhra Pradesh

Mahaboob Shareef Syed *, Ch.V.Suresh**, S. Siva Nagaraju ***

* Research Scholar, Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University Kakinada, Andhra Pradesh, India.

** Associate Professor, Department of Electrical and Electronics Engineering, Vasireddy Venkatadri Institute of Technology, Nambur, Guntur Andhra Pradesh, India.

*** Professor, Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University Kakinada, Andhra Pradesh, India.

Syed, M. S., Suresh, V., and Sivanagaraju, S. (2018). Multi Area Load Frequency Control of a Hybrid Power System with Advanced Machine Learning Controller: Case Study of Andhra Pradesh. i-manager’s Journal on Power Systems Engineering, 6(1), 1-13.https://doi.org/10.26634/jps.6.1.14043

Abstract

In the present work, the Load Frequency Control (LFC) problem of a real time bus test system of Andhra Pradesh state 124 (AP-124), India, has been studied. The system comprises of hydro, thermal, gas, and nuclear plants. The entire system is segregated into four control areas. Area 2 and Area 4 form a hybrid power system with wind and solar plants integration, as the availability of wind and solar resources are abundant in the respective areas. To overcome the chaotic behaviour of load and renewable energy generation, it is indeed necessary to develop a sophisticated controller. A hybrid Persistent – Extreme Learning Machine (P-ELM) controller was used to encounter the frequency and tie-line power deviations. The LFC has been studied by the Conventional Integral Control, Neural Network (NN) Control and P-ELM Control, with variations in load, wind, and solar generations as well.

Enhancement of Power Transfer Capability using TCSC

Volume 5 Issue 4 November - January 2018

Research Paper

Enhancement of Power Transfer Capability using TCSC

S. G. Ankaliki*, Priyanka R. Kinekar**

* PG Scholar, Department of Electrical and Electronics Engineering, SDMCET, Dharwad, Karnataka, India.

** Professor & PG Coordinator, Department of Electrical and Electronics Engineering, SDMCET, Dharwad, Karnataka, India.

Kinekar, R. P., and Ankaliki, G. S. (2018). Enhancement of Power Transfer Capability using TCSC. i-manager’s Journal on Power Systems Engineering, 5(4), 40.47. https://doi.org/10.26634/jps.5.4.14160

Abstract

In present days, increasing power demand leads to operate the transmission networks at their maximum operating limits. To overcome the problem of power flow control in a power system network, Thyristor Controlled Series Compensator (TCSC) is included. TCSC is one of the series compensating Flexible Alternating Current Transmission System (FACTS) devices; it consists of a series compensating capacitor shunted by a Thyristor Controlled Reactor (TCR). The main objective of TCSC is to provide partial continuously variable impedance by cancelling the effective compensating capacitance. The aim of this work is to improve the real power flow in the transmission line under different loading conditions and also simulation is carried out for different levels of compensation. In this work, performance analysis of electrical network using MATLAB Simulink and IEEE five bus system is carried out using Mi-Power tool.

Evaluation of Available Transfer Capability using Power World Simulator

Volume 5 Issue 4 November - January 2018

Research Paper

Evaluation of Available Transfer Capability using Power World Simulator

Manjula S. Sureban*, Shekhappa G. Ankaliki**

* Assistant Professor, Department of Electrical and Electronics Engineering, SDM College of Engineering & Technology, Dharwad, India.

** Professor & PG Coordinator, Department of Electrical and Electronics Engineering, SDM College of Engineering & Technology, Dharwad, India.

Sureban, M. S., and Ankaliki, G. S. (2018). Evaluation of Available Transfer Capability using Power World Simulator. i-manager’s Journal on Power Systems Engineering, 5(4), 34-39. https://doi.org/10.26634/jps.5.4.14159

Abstract

This paper presents the step by step procedure to evaluate Available Transfer Capability (ATC) of the interconnected transmission network using Power World Simulator. Fast and accurate determination of ATC is very important in real time. Various software packages have been developed to evaluate ATC of the given system. Also, there exist linear methods for ATC calculation, which are either based upon DC or AC Power Transfer Distribution Factors (PTDF). These are fast, but do not consider control changes such as generator reactive limits and voltage limits as the transfer limit increases. Another method to calculate ATC is Continuation Power Flow (CPF) method, which can produce accurate ATC values but requires repeated solution of power flow, and hence consumes more time. Also, there is a probabilistic approach to determine ATC, which is carried out by Monte Carlo Simulation. In this paper, PTDF method is explained to find ATC, which is implemented as Add Ons in Power World Simulator to compute ATC. The results are discussed for IEEE-14 bus system.

Distribution System Reconfiguration using Mesh Elimination Technique

Volume 5 Issue 4 November - January 2018

Research Paper

Distribution System Reconfiguration using Mesh Elimination Technique

E. Mounica *, P. Ravi Babu **

* M.Tech Graduate, Department of Electrical Engineering, Jawaharlal Nehru Technological University Hyderabad, India.

** Professor & Head of the Department, Department of Electrical Engineering, Sreenidhi Institute of Science and Technology, Hyderabad, India.

Mounica, E., and Babu, P. R. (2018). Distribution System Reconfiguration using Mesh Elimination Technique. i-manager’s Journal on Power Systems Engineering, 5(4), 24-33. https://doi.org/10.26634/jps.5.4.14158

Abstract

This work propounds a totally distinctive heuristic technique kenned as Mesh-Elimination (M-E) technique for reconfiguring an Electrical Distribution System. System reconfiguration can also be utilized as the multi objective implemented to tackle utterly different issues like loss diminution, load equalization, and amenity restoration in electrical power systems. This paper introduces some proficient algorithmic rules predicated upon M-E technique to unravel the issue of loss diminution for an electric power distribution system that is given. The M-E strategy is also an appealing heuristic technique in terms of computations, accustomed to ascertain optimum layout of a radial distribution system that is given. The projected algorithmic rules are encrypted in MATLAB. To establish the legitimacy of this algorithm, it has been experimented with traditional IEEE Sixteen, Thirty-three and Sixty-nine bus systems, and the obtained outcomes are habituated to corroborate the potential of the projected algorithmic rules to being applied to various other systems.

Optimal Allocation of Distribution Generation Units in Radial Distribution Systems using Nature Inspired Optimization Techniques

Volume 5 Issue 4 November - January 2018

Research Paper

Optimal Allocation of Distribution Generation Units in Radial Distribution Systems using Nature Inspired Optimization Techniques

Y. Anil Kumar *, N. Prema Kumar **

* Research Scholar, Department of Electrical Engineering, Andhra University College of Engineering, Visakhapatnam, Andhra Pradesh, India.

** Professor, Department of Electrical Engineering, Andhra University College of Engineering, Visakhapatnam, Andhra Pradesh, India.

Kumar, Y. A., and Kumar, N. P. (2018). Optimal Allocation of Distribution Generation Units in Radial Distribution Systems using Nature Inspired Optimization Techniques. i-manager’s Journal on Power Systems Engineering, 5(4), 15-23.https://doi.org/10.26634/jps.5.4.14157

Abstract

Growth in energy demand is more than the energy production due to various reasons like industrial growth, rapid urbanization, increasing affordability of electric gadgets, etc. The integration of existing grids with renewable energy sources provides economical, sustainable and efficient power distribution, and this allows to control the greenhouse effect. The reduction in power loss and voltage profile improves the distribution system, which can be done by using some techniques, such as feeder or network reconfiguration, VAR compensation with capacitor banks, and Distributed Generation (DG). DG is a localized small scale generation installed in the distribution network capable of injecting active power and providing limited reactive power support, reduced distribution losses, improved voltage profile in the system, hence, improving the quality of the power. The significant process is to improve the power quality of the system and this system is used to find the size of the DG unit and their suitable locations of the system. In this paper, IPSO and a new gradient free, meta-heuristic, population based algorithm called BAT Inspired Algorithm, are used to evaluate the optimal size and location of DG units. Distributed load flow is carried out for 33-bus and 69-bus systems to obtain power losses and voltage at each bus. Optimization techniques like IPSO and BAT algorithms are considered for the optimal placement and optimal sizing of Distributed Generators in radial distribution system by multi-objective optimization approach has been discussed. The practical application and efficiency of this method is determined by using two test systems (33 and 69-bus). The proposed methods are carried out using MATLAB.

Performance Analysis of Switching Between Bryson, Boudarel & Multistage LQR's Ffor Power System with UPFC at Different Load Conditions

Volume 5 Issue 4 November - January 2018

Research Paper

Performance Analysis of Switching Between Bryson, Boudarel & Multistage LQR's Ffor Power System with UPFC at Different Load Conditions

Kourosh Davoodi*, Yathisha L**, S. Patilkulkarni***

* Research Scholar, Department of Electronics and Communication, JSS Research Foundation, University of Mysore, Karnataka, India.

** Associate Professor, Department of Electronics and Communication,ATME College of Engineering, Mysore, India.

*** Professor, Department of Electronics and Communication, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India.

Davoodi, K., Yathisha, L., and Patilkulkarni, S. (2018). Performance Analysis of Switching Between Bryson, Boudarel & Multistage LQR's for Power System with UPFC at Different Load Conditions. i-manager’s Journal on Power Systems Engineering, 5(4), 1-14.https://doi.org/10.26634/jps.5.4.14156

Abstract

As a preliminary analysis, this paper presents the design of Bryson, Boudarel and Multistage-based Linear Quadratic Regulator (LQR) optimal controllers for the power system with Uniform Power Flow Controller (UPFC) at light, normal and heavy load conditions. For each load condition, the two best optimized feedback controllers are selected which is based on the preliminary analysis, and optimal switching strategy was implemented between two candidate controllers to optimize the output energy. The proposed solution is tested by using linearized Single Machine Infinite Bus (SMIB) Phillips-Heffron power system model installed with Uniform Power Flow Controller (UPFC). Simulation was done to verify the hypothesis using MATLAB/SIMULINK platform.