Shobhika Mathur

Bio: Shobhika Mathur is an academic researcher from VIT University. The author has contributed to research in topics: Quadrature booster & Thyristor. The author has an hindex of 1, co-authored 1 publications receiving 7 citations.

Utilizing FACTS devices in enhancement of market power under congestion-a threat to the deregulated electricity market

Abstract: In power system studies, congestion in transmission lines and utilization of Flexible Alternating Current Transmission System (FACTS) devices are closely associated and it is very important due to their role in power delivery system enhancement. It is to be noted that the generation companies can exercise their market power which depends on the line flows and the line constraints, generators' location and its share to the individual loads. This issue cannot be overlooked as it creates monopoliness which is a threat to the deregulated market policy. The objective of this paper is to show how the generation companies' market power gets enhanced due the FACTS devices. FACTS devices like Thyristor Controlled Switching Capacitor (TCSC) and Thyristor Controlled Phase Angle Regulator (TCPAR) are taken and used under steady state operation. The market power is determined using Nodal Must Run Share (NMRS) index for the standard IEEE 14-bus system with and without the above FACTS devices and the results obtained are compared. All the above simulations are carried out in MATLAB 7.9- R2009b environment.

Bibliography of FACTS 2012–2013: IEEE working group report

Abstract: This paper presents the Bibliography of FACTS technology for 2012–2013. It provides a listing of various journal and conference papers in this area. This Bibliography includes papers published until November 2013.

Application of Cubic Spline Interpolation in estimating Market power under deregulated electricity market

Abstract: In a deregulated market environment, the calculation of market power is one of the top priorities of the bodies involved in the market. The bodies generally involved such as the Generation companies (GENCOs), Distribution companies (DISCOs) look towards maximizing profit whereas the RTO/ISOs look to attain a zero market power environment. In this paper, Must Run Share and Nodal Must Run Share (NMRS) is used as an index to calculate market power. To focus upon the fast, accurate calculations and understanding the trends of market power under system changes such as various load conditions, transmission line outage and generator outage, Cubic's Spline Interpolation is used as a technique to interpolate between market powers calculated over a few operating condition set points. A demonstration of the employment of such a system is represented in this paper which will help in achieving the objectives of the players or firms involved in the electricity market. This system will be dynamic enough to suggest the operating conditions for a desired level of market power for any of the above named firms under unexpected system changes. The work is done on IEEE 14 bus test system on the MATLAB version R2012b.

Congestion Management in Deregulated Power Market – a Review

Abstract: In a deregulated power market, the optimum power flow (OPF) for an interconnected grid system is an important concern as related to transmission loss and operating constraints of power network. The increased power transaction as related to increased demand and satisfaction of those demand to the competition of generation companies (GENCOs) are resulting the stress on power network which further causes the danger to voltage security, violation of limits of line flow, increase in the line losses, large requirement of reactive power, danger to power system stability and over load of the lines i.e. congestion of power in system. It can be managed by rescheduling of generators or optimal location of distributed generation (DG) at minimum cost with minimum loss without disturbing the operating constraints. This paper reviews some of congestion management (CM) methods including the nodal pricing method, differential evolution (DE), addition of renewable energy sources, extended quadratic interior point (EQIP) based OPF, mixed integer nonlinear programming, particle swarm optimization (PSO), cost free methods and Genetic Algorithm (GA). Each technique has its own significance and potential for promotion of rescheduling of generators in a deregulated power system.

Application of Cubic Spline Interpolation Technique in Power Systems: A Review

Abstract: In this chapter, a comprehensive review is made on the application of cubic spline interpolation techniques in the field of power systems. Domains like available transfer capability (ATC), electric arc furnace modeling, static var. compensation, voltage stability margin, and market power determination in deregulated electricity market are taken as samples to illustrate the significance of cubic spline interpolation.