Optimal Allocation of UPFC and IPFC in Network Considering Sensitivity of Line Flows under Single Line Contingency

Abstract

This paper presents, optimal location for deployment of Unified Power Flow Controller (UPFC) and Interline Power Flow Controller (IPFC) in network considering sensitivity of line flows under single contingency. A sensitive approach is proposed which is considered based on Ranking Index (RI) and Performance Index (PI). A unitary change of power flow (PF) in each transmission line after outage of a branch element can be obtained from proposed index. The proposed Index is used to quantify loading level of network after a given outage. Contingencies are structured in descending order depending on value of proposed Index. Sensitivity factors are obtained by differentiating PF indices subject to parameters of UPFC and IPFC devices. Optimal deployment of UPFC and IPFC device is considered by the value of sensitivity factors attained by considering line outages in order of their severities which is given by proposed Index. The efficacy of proposed approach is computed and programmed on 5bus and IEEE 14bus networks under MATLAB environment.

Sensitivity Based Allocation of FACTS Devices in a Transmission System Considering Differential Analysis

“…Five generator buses, eleven load buses, and twenty transmission lines make up the IEEE 14 bus test network [12,15,16,18]. The maximum line flow is 120 MW.…”

Optimal siting and sizing of unified power flow controller using sensitivity constrained differential evolution algorithm

“…Several studies [18], [19] focused on fuzzy logic controller to allocate UPFC in optimal places. Indices such as fast voltage stability index (FVSI) [20], network branch index (NBI) [21], and ranking index (RI) [22] are proposed to find the weakest locations of network for siting of UPFC.…”