Improvements in deviation settlement mechanism of Indian electricity grid system through demand response management

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bharti Koul ◽  
Kanwardeep Singh ◽  
Yadwinder Singh Brar
Keyword(s):  
Real Time ◽  
Demand Response ◽  
Power Flow ◽  
Grid System ◽  
Voltage Profile ◽  
Electricity Grid ◽  
Flow Equations ◽  
Time Period ◽  
Settlement Mechanism ◽  
Network Power

Abstract This paper proposes the improvements in deviation settlement mechanism of Indian electricity grid system through demand response management (DRM) with the objective to minimize real-time under-injection/over-drawl or maximize real-time over-injection/under-drawl with respect to scheduled injection/drawl such that the deviation settlement charge (DSC) is minimum, subject to the network power flow equations, transmission line capability constraints, DRM constraints and bounds on variables. The mechanism to settle the unscheduled transactions, commonly named as deviation settlement mechanism (DSM), has been implemented to achieve grid frequency stability by imposing penalties and paying incentives, also known as DSC, for over- and under-drawls from the scheduled transactions. In this paper, the improvements in DSM have been solved as an optimization problem to minimize the DSC for a time period of 96 time-blocks (each of 15 min duration). The proposed improvement in DSM has been tested on modified IEEE 9-Bus system. It has been assumed that the generators installed at bus numbers 1, 2 and 3 are the central generating stations, which are monitored and controlled by the regional load dispatch center (RLDC). The simulation results are obtained (with varying percentages of shifting and different participating patterns of prosumers) for which the remarkable benefits of the proposed improvement in DSM (in terms of DSC minimization and improvement in the voltage profile and power flow) have been presented.

scholarly journals Modelling and Analysis of Real Time Power System With Cascaded Multilevel STATCOM Using Fuzzy Controller

2017 ◽  
Vol 12 (10) ◽  
pp. 4408-4417
Author(s):  
SUNDARARAJU K ◽  
SENTHIL KUMAR R
Keyword(s):  
Power System ◽  
Real Time ◽  
Power Flow ◽  
Fuzzy Controller ◽  
Flow Analysis ◽  
Voltage Profile ◽  
Variable Loading ◽  
Static Synchronous Compensator ◽  
Power Flow Analysis ◽  
Before And After

Electric Power is a major concern that has generated more importance in electrical utilities and consumers. To assure a reliable and quality power system, all the bus are expected to maintain steady acceptable voltage before and after being subjected to any disturbance. Among the FACTs devices a static synchronous compensator(STATCOM) is analyzed to provide a reliable and feasible solution. The STATCOM has been developed using cascaded multilevel converter.  A FUZZY based controller for Cascaded Multilevel STATCOM is developed which produces improved performance.This paper presents a comprehensive analysis of CMC based STATCOM  with fuzzy controller in real time power system concerning the problem of variable loading and losses. A real time substation with 20 bus are analyzed with power flow analysis with and without STATCOM. Without the connection of STATCOM, a observable changes in the system voltage, line flows and losses are in system behaviour. But this influences the quality of grid and hence the customers are affected badly, indicating the need of power flow analysis and location of STATCOM on the system to improve the voltage profile. It is demonstrated that the described model works to an excellent level in improving the substation performance.

A Review of Incentive Based Demand Response Methods in Smart Electricity Grids

2015 ◽  
Vol 3 (4) ◽  
pp. 62-73 ◽  
Author(s):  
Vasiliki Chrysikou ◽  
Miltiadis Alamaniotis ◽  
Lefteri H. Tsoukalas
Keyword(s):  
Power Systems ◽  
Demand Response ◽  
Smart Grids ◽  
Power Flow ◽  
Current Approach ◽  
Electricity Distribution ◽  
Distribution Grid ◽  
Incentive Design ◽  
Electricity Grid ◽  
Electricity Grids

Smart electricity grid is a complex system being the outcome of the marriage of power systems with computing technologies and information networks. The information transmitted in the network is utilized for controlling the power flow in the electricity distribution grid. Thus smart grid facilitates a demand response approach, where grid participants monitor and respond to information signals with their electricity demand. This review paper focuses on a subclass of demand response methods and more particularly in incentive based demand response. It aims at providing a review of the existing and proposed methods while briefly explaining their main points and outcomes. In the current approach, the plethora of methods on incentive based demand response is grouped according to the tools adopted to implement the incentives. The overall goal is to provide a comprehensive list of incentive design tools and be a point of inspiration for researchers in the field of incentive based demand response in smart grids.

scholarly journals Shunt Compensaton of the Integrated Nigeria’s 330KV Transimission Grid System

2020 ◽  
Vol 5 (9) ◽  
pp. 537-540
Author(s):  
Engr. Obi, Fortunatus Uche ◽  
Aghara, Jachimma ◽  
Prof. Atuchukwu John
Keyword(s):  
Power System ◽  
Transmission Lines ◽  
Power Flow ◽  
Research Work ◽  
Load Flow ◽  
Sudden Increase ◽  
Grid System ◽  
Voltage Profile ◽  
Contingency Analysis ◽  
Shunt Compensation

The Nigerian Power system is complex and dynamic, as a result of this it is characterized by frequent faults and outages resulting to none steady supply of power to the teaming consumers. This has great effect on the activities and mode of living of Nigerians. The research work was carried out on contingency analysis on the existing integrated 330KV Nigeria grid system and to carry out a shunt compensation on the violated buses, the shutdown of Eket-Ibom line being the case study so as to determine the following; uncertainties and effects of changes in the power system, to recognize limitations that can affect the power reliability and minimize the sudden increase or decrease in the voltage profile of the buses through shunt compensation of buses. Determine tolerable voltages and thermal violation of +5% and -5% of base voltage 330 KV (0.95-1.05) PU and to determine the critical nature and importance of some buses. This is aimed at bridging the gap of proposing further expansion of the grid system which is not only limited by huge sum of finance and difficulties in finding right – of- way for new lines but also which faces the challenges of fixed land and longtime of construction. The data of the network was gotten and modeled. The power flow and contingency analysis of the integrated Nigeria power system of 51 buses (consisting of 16 generators and 35 loads) and 73 transmission lines were carried out using Newton-Raphson Load Flow (NRLF) method in Matlab environment, simulated with PSAT software. Shunt compensation of the weak buses were done using Static Var Compensator (SVC) with Thyristor Controlled Reactor- Fixed capacitor (TCR-FC) technique. Results obtained showed that the average voltage for base simulation was 326.25KV, contingency 323.67KV and compensation was 322.37 KV. Voltage violations for lower limit were observed at Itu as 309KV and Eket as 306.81 KV while violations for upper limit were recorded at Damaturu as 352.85KV, Yola as 353.62 KV, Gombe as 355.98KV, and Jos as 342.97 KV. However after shunt compensation there were improvements for the violations at lower limits and that of higher limit were drastically brought down as recorded below: Damaturu 329.93 KV, Jos 330 KV, Eket 327.2 KV, Gombe 333.55KV, Itu 330KV, and Yola 330.52KV

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