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Power System Planning for Reduction in System losses using STATCOM and PSO Technique

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Abstract

This paper presents a procedure to reduce system loss using Static Synchronous Compensator (STATCOM) devices in a power system network (PSN). The bus power sensitivity factors (BSF) represented by the change in system loss to the change in power injections (CPI) for all the buses of a PSN are determined to identify the suitable location of STATCOM devices. Initially, a load flow (LF) analysis is carried out with the baseload to obtain the BSFs. Then, the buses with significant values of BSFs are considered to introduce STATCOM devices. Based on the real and reactive power sensitivity factors (SFs) of the buses with STATCOM devices, Particle Swarm Optimization (PSO) technique is used to obtain the necessary change in real and reactive power injection (RRPI) to reduce the system loss. Then with the modified schedule power injections, the LF analysis with STATCOM (LFSTATCOM) is conducted to determine the voltage magnitude and phase angle of the STATCOM device. The proposed algorithm is implemented on the IEEE 118 bus to verify its effectiveness and MATLAB software is used to develop the program to implement this method. The result shows that the implementation of STATCOM devices at the selected sensitive buses of the system could reduce the system loss to 2.2691 p.u. from 3.085 p.u. by regulating the power injections at the selected buses with STATCOM devices. In addition to this, it also improves the bus voltage profile of the IEEE 118 bus system. Further, to show the economic benefit of installing STATCOM devices at the selected buses of the PSN the cost–benefit analysis (CBA) has been carried out based on the installation cost (IC) of STATCOM devices and the cost saving results from the reduction of system loss.

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Abbreviations

\(k,m\) :

Bus numbers

\(n\) :

Total no of buses in the system

\(P_{k} + jQ_{k}\) :

Complex power injection at kth bus

\(V_{k} \angle \delta_{k}\) :

Voltage at kth bus in polar form

\(G_{km} + jB_{km}\) :

Elements of bus admittance (Ybus) matrix

\(P_{L}\) :

System loss

\(\Delta P_{k} + j\Delta Q_{k}\) :

Change in complex power injection at kth bus

\(P_{sh}^{sch} + jQ_{sh}^{sch}\) :

Schedule value of complex power contribution with STATCOM

\(SF_{P}\) :

SF due to change in real power injection

\(SF_{Q}\) :

SF due to change in reactive power injection

\(V_{sh} \angle \delta_{sh}\) :

Voltage output of STATCOM in polar form

\(g_{sh} + jb_{sh}\) :

Elements of admittance of converter transformer in complex form

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The authors certify that this research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, School of Technology, Assam Don Bosco University, Guwahati, 781017, India

    Smiti Dey

  2. Department of Electrical Engineering, Royal School of Engineering and Technology, Royal Global University, Guwahati, 781035, India

    Nilakshi Deka

  3. Department of Electrical Engineering, Assam Engineering College, Guwahati, 781013, India

    Durlav Hazarika

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  1. Smiti Dey
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Dey, S., Deka, N. & Hazarika, D. Power System Planning for Reduction in System losses using STATCOM and PSO Technique. J. Inst. Eng. India Ser. B 103, 1269–1281 (2022). https://doi.org/10.1007/s40031-022-00715-9

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