Multi objective dragonfly algorithm for congestion management in deregulated power systems
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ORIGINAL RESEARCH
Multi objective dragonfly algorithm for congestion management in deregulated power systems C. Saravanan1 · P. Anbalagan1 Received: 9 May 2020 / Accepted: 29 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Congestion in transmission corridors are the major bother for deregulated power system’s operation. Generator rescheduling along with demand alteration is a traditional remedy for transmission line congestion. According to market clearing process, the system operator (SO) has to pay a certain amount of cost to the market participants for rescheduling the generation and demand. This kind of redispatch related congestion management (CM) procedure is mainly carried out to reduce the congestion cost, but they are failing to provide an attention in power systems security. The risky generator’s power shifts may diminish the voltage and transient stability of the power system. So power system security should be included in the congestion management procedure. In this proposed multi objective congestion management procedure, rescheduling of active power is carried out to improve/retain the power systems security along with a congestion cost reduction. Voltage security margin (λ) and corrected transient energy margin (CTEM) provides a measure for power system security level. Multi Objective Dragonfly Algorithm (MODA) is employed to trace the non dominated solutions for three conflicting objectives. Fuzzy decision making principle is applied to select the best Pareto solution depends on the objective’s significances. The goodness of the MODA optimization approaches is experimented in congestion alleviation of New England 39 bus systems and solutions are compared with some reputed methods. Keywords Congestion · Generator rescheduling · System operator (SO) · Congestion management (CM) · Voltage security margin (λ) · Corrected transient energy margin (CTEM) · Multi objective dragonfly Algorithm(MODA) · Fuzzy decision maker
1 Introduction Restructuring of electric power system thrusts to operate the transmission networks near its maximum loading capacity. Shortage of power production capacity along with the increasing power demand, competitions between the market participants to access the transmission network and economical factors are influencing thrust (Shahidehpour et al. 2002). As the thermal limits of transmission lines are fixed, any further increase in demand, contingencies and also the unscheduled power flow intimidate the downfalls
* C. Saravanan [email protected] P. Anbalagan [email protected] 1
Department of EEE, University College of Engineering, BIT Campus, Anna University, Tiruchirappalli, India
in transmission networks operational and security constrains referred as congestion (Christie et al. 2000; Lai et al. 2001). Optimal generation rescheduling is one of the conventional prevailing remedy for congestion in a deregulated power market (Verma and Mukherjee et al. 2016a, b; Balaraman and Kamaraj et al. 2011). Relative electrical distance, generato
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