DESIGN OF OPTIMAL DUAL INPUT POWER SYSTEM STABILIZERS (DIPSS) AND CAPACITIVE ENERGY STORAGE (CES) USING PARTICLE SWARM OPTIMIZATION (PSO)

Ulfi, Faiq and Tamaji, Tamaji and Robandi, Imam (2010) DESIGN OF OPTIMAL DUAL INPUT POWER SYSTEM STABILIZERS (DIPSS) AND CAPACITIVE ENERGY STORAGE (CES) USING PARTICLE SWARM OPTIMIZATION (PSO). Proceedings of International Seminar on Applied Technology, Science, and Arts (APTECS) 2010. p. 39. ISSN 2086-1931

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Abstract

This paper discusses about the instability in electric power system and its importance in overcoming instability rapidly. This problem is generally solved using a stabilizer such as Conventional Power System Stabilizer (PSS). However, the use of PSS is limited to the retrieval speed signals that do not have the relatively large noise. Large noise will affect in the generator excitation system. Reducing of signal noise in the speed signal, so Dual Input Power System Stabilizer (DIPSS) is used to overcome this problem. DIPSS can reduce signal noise by taking another input signal in system model. It can increase or decrease level in value for input of excitation system, so the excitation system can avoid of mistakes in decision-reference signal. Deviation in electrical power (ΔPe) and deviation in speed (Δω) in generator is used as an input signal DIPSS. Improvement stability in power system usually using more than one device. CES (Capacive Energy Storage) is choosen become second device to handle this problem. CES usually used to overcome frequency oscilation. This equipment is added to reduce the little overshoot from DIPSS. Optimal coordination between two device is needed to obtain good results and does not exacerbate the addition of extra equipment. it needs the appropriate parameter value of each equipment in order to overcome problems quickly. Particle Swarm Optimization (PSO) is method in order to find value of time constant in block diagram parameter lead lag DIPSS and gain in CES. From the simulation result show that the use of CES DIPSS PSO can speed up settling time to 12.302 second better than uncontrolled, 9.612 second than PSS, and 0.563 second when using DIPSS PSO. Keywords Dual Input Power System Stabilizer (DIPSS), Particle Swarm Optimization (PSO), Power System Stabilizer (PSS), Capacitive Energy Storage (CES)

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