K. Karthikeyan ¹, P. K. Dhal ¹

Affiliations
1 Department of Electrical and Electronics Engineering, Vel Tech Dr. RR and Dr. SR Technical University, Chennai - 600095, Tamil Nadu, IN

Abstract

In this paper, the advancement in small signal stability via the optimal placement of Static Synchronous Compensator (STATCOM) and its performance is considered. The Eigen values are employed to analyze the stability of the WSCC system and the analysis has been done by PSAT software. It has been studied through light, medium, heavy, heavy one loading conditions unlike the existing system. At heavy one loading condition, the stability of the system collapses and the system has positive Eigen values. The system with STATCOM has the ability to work with stability though it undergoes heavy one loading conditions compared to the system without STATCOM and the positive Eigen values in the system is nil. The outcome of the proposed approach shows that STATCOM enhances the small signal stability excellently in the power system network.

Keywords

Eigen Value, PSAT, Small Signal Stability, STATCOM, WSCC

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K. Karthikeyan ¹, P. K. Dhal ¹

Affiliations
1 Department of Electrical and Electronics Engineering, Vel Tech Dr. RR & Dr. SR Technical University, 42-Avadi- Vel Tech Road,Chennai - 6000062, Tamil Nadu, IN

Abstract

In this paper, transient stability of a multi machine system is evaluated when the system is experienced a three phase fault and the stability of multi machine system is recovered via optimal placement and tuning of STATCOM. Here, the parameters of the STATCOM are tuned by Biogeography based optimization and the STATCOM is positioned optimally in the system. The performance of the tuned system is compared with various operational conditions like without STATCOM, with STATCOM (untuned) and with two STATCOM (untuned). The time domain simulations and the analysis of the multi machine system are done by PSAT (Power System Analysis Toolbox). When the multi machine system is subjected to a three phase fault, voltage stability of the system is collapsed. The multi machine system with STATCOM (tuned by Biogeography based optimization) regains the stability and gives better voltage profile than the system with STATCOM (untuned), with two STATCOM (untuned) and the system without STATCOM. The results are evaluated with the other operational conditions of the system and it proves that the system has the transient stability when the STATCOM (tuned by Biogeography based optimization) is applied.

Keywords

Biogeography Based Optimization, STATCOM, Transient Stability, WSCC

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