Sanjay Kumar Sinha

Power flow study and contingency status of WSCC 9 Bus test system using MATLAB

Power flow study is the initial step which provides voltage magnitudes, phase angles, active and reactive power flows at respective buses under normal operating conditions. It helps in analyzing the current state of the power system and effective alternative options for expanding the existing system in order to meet with the increasing load demand. Contingency Analysis is also a major part of study for reliable and planned operation of power system. It is very significant function in modern Energy Management Systems. The objective of contingency analysis is to give operator the information about the static security. There are several factors which may lead to the contingency in power system, for example line outage, transformer outage, generator outage and overloads resulting the extreme situations such as voltage collapse, over loads in other branches and/or sudden system voltage rise or drop. Contingency analysis is used to calculate parameters violations. In this paper, maximum loading parameter is calculated and contingency status of Western System Coordinating Council 3 Machine, 9 Bus test system is done using PSAT toolbox in MATLAB.

Effect of temperature, irradiation, humidity and wind on ideal/double diode PV system performance

In this paper, MATLAB/Simulink modeling of ideal and double diode photovoltaic (PV) system is presented based on their mathematical modeling. A comparative transient analysis of ideal and double diode PV system has been done by using a resistive load. Furthermore, effect of climatic conditions such as varying solar irradiation, wind speed, humidity and temperature on the designed ideal and double diode PV system is examined. The acquired results show acceptable performance for real-time model of PV system.

Voltage Stability Enhancement of Primary Distribution System by Optimal DG Placement

Voltage stability of a power system is the ability of the same to maintain a steady voltage at all the system buses even after the system is subjected to some disturbance. This steady voltage is compared from some initial system state when there was no disturbance in the system. By far shunt capacitors were found to be the simplest and most economical method for correcting the distribution system voltage. But they do suffer from certain limitations which are inherent, as far as voltage stability is concerned. The paper studies the voltage stability of a distribution system and proposes placement of DG units with sufficient capacity and at suitable sites so as to improve the voltage stability of the distribution system.

Comparison of ANN-Based MPPT Controller and Incremental Conductance for Photovoltaic System

The efficiency of photovoltaic (PV) panel is affected by the changing irradiation and temperature. So it is important to implement maximum power point tracking (MPPT) for PV systems. This is done to enhance the efficiency of the system. In this paper, a grid-connected system has been taken, and an artificial neural network (ANN) based MPPT controller has been designed and simulated in MATLAB/SIMULINK environment, and the results have been compared with the conventional incremental conductance (IC) algorithm. The study has been performed for changing solar irradiation.

Improvement of Power System Security Under Single Line Critical Contingency Condition by Optimal Placement of Multiple TCSCs

Transmission congestion occurs in a power system due to increase in load demand. This mainly occurs in restructured power system because of restrictions of transmission line capacity. Due to this power system does not remain in secure condition. Ranking of contingency is done using performance index and critical contingency is found. In this paper, placement of multiple TCSCs for reducing transmission line congestion under single line critical contingency condition is done. Optimal location for placement of TCSCs is found out by using sensitivity analysis. By placing two TCSCs, there is reduction in line loading, improvement in voltage profile and reduction in reactive power loss, thus keeping power system in secure condition under critical contingency. Proposed work is carried out on IEEE 14 bus test system using MATLAB.

LMP Difference Approach for Management of Transmission Congestion

This paper deals with new methodology for optimal placement of Distributed Generator (DG) to improve congestion in the transmission system. The proposed approach is based on LMP and LMP difference method to formulate priority list of buses. Based on priority list congested zones are formed and Distributed Generators are placed at potential location to analyze the status of the system. Loading condition is also studied. In this work, the simulation studies on IEEE 14 bus system is found to be competent to find the best location of DG for management of transmission system congestion.

Optimal Placement of Solar PV as Active Power Source in Primary Distribution System for Loss Reduction

The general problem of DG placement deals with the size of DG and its location, but at the same time this placement must be economically justifiable. To gain benefits of DG placement, the DG must be optimally sized and placed. The paper uses analytical expressions for determination of optimal size and a methodology for optimal location of DG placement. The solar PV system is used as the distributed generator to be placed in primary distribution system for active power supply. The solar photovoltaic system is employed here as a type 1 distributed generator (DG) to supply active power to the distribution system. The methodology uses analytical expressions and is based upon the exact loss formula. Along with the optimal size and location, this paper also presents the economics of this placement considering loss reduction and capacity relieving of the distribution substation.

Design of Efficient DC Power Supply for High-Voltage Low-Current Applications

High voltage generally means electrical energy of higher magnitude sufficient to inflict human beings. So, safety requirements and particulars are to be followed while designing the model. The objective of this paper is generation of high DC output voltage from two methods, namely flyback converter and Cockcroft–Walton voltage multiplier with input DC supply. Mathematical modeling, control strategy, circuit operation, and design considerations are discussed. High-voltage power supply for a particular application has become cheaper due to latest advance in power supply technology. Many applications are of high DC supply in industry, research work, dielectric testing of high-voltage equipment.

Integration of Renewable Energy Resources for Rural Electrification

Integration of renewable energy resources is a good solution for electrifying the remote unelectrified villages. In this paper, optimal and economical combination of renewable energy resources has been done using Homer software for the electrification of remote village, Kadura in the state of Jammu and Kashmir. The renewable energy resources that we have considered in our case are hydro, solar, and wind. First the commercial, domestic, industrial, agricultural, and irrigation load demand have been estimated of this particular area. The optimized combination provided cost-effective and reliable electricity to this remote unelectrified village. The paper also explains sensitive analysis of external disturbances like climatic changes or technical snags that would affect the overall optimal combination. The combination provided by integrating renewable energy resources is environment friendly which is the most challenging task for modern power sector.

Impact of solar PV modules on existing power system peak load demand

This work emanates from our personal conviction in renewable energy & its practical effect in the field. The real time data regarding power consumption to demonstrate the impact of solar energy technology is presented here. The improvement in efficiencies is gained due to installation of solar PV modules. The power consumption pattern before and after the installation of renewable energy technologies in Amity University Uttar Pradesh, Noida is compared quantitatively. The detail data regarding seasonal & monthly variations in power consumption is discussed. The paper provides future trends in renewable energy technologies deployment at Amity campus and chart the course towards sustainability and a pollution free world.