Optimal PMU Placement based on Voltage Stability Index for Observability of Network

d60bd5e8-5a0d-41c0-98a3-ff9cb65d968b20250619042951952wseas:wseasmdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS2224-266X1109-273410.37394/23201http://wseas.org/wseas/cms.action?id=2861214202521420252410.37394/23201.2025.24https://wseas.com/journals/cas/2025.phpOptimal PMU Placement based on Voltage Stability Index for Observability of NetworkP.LakshminarayanaDepartment of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology, and Research, Vadlamudi, Guntur 522213, INDIAK. MercyRosalinaDepartment of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology, and Research, Vadlamudi, Guntur 522213, INDIACh. N. NarasimhaRaoDepartment of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology, and Research, Vadlamudi, Guntur 522213, INDIAY. SrinivasaRaoDepartment of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology, and Research, Vadlamudi, Guntur 522213, INDIAM. Uma MaheswaraRaoDepartment of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology, and Research, Vadlamudi, Guntur 522213, INDIAThis work presents a voltage stability Index (FLVSI) for optimal PMU placement (OPP) to achieve complete network observability. Every PQ bus is considered in the FLVSI strategy to attain weak PQ bus from PMUs are conditioned to allocate at weak PQ buses using ILP approach to attain observability of network. Zero Injection (ZIB) modeling is introduced to minimize PMU places in the network. The redundancy Index (RI) is formulated to compute redundancy for all buses in the network. 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