Journal Article

Numerical observability method for optimal phasor measurement units placement using recursive Tabu search method

Koutsoukis, Nikolaos C., Manousakis, Nikolaos M., Korres, George N., Georgilakis, Pavlos S.

2013

Overview

Phasor measurement units (PMUs) are essential tools for monitoring, protection and control of power systems. The optimal PMU placement (OPP) problem refers to the determination of the minimal number of PMUs and their corresponding locations in order to achieve full network observability. This paper introduces a recursive Tabu search (RTS) method to solve the OPP problem. More specifically, the traditional Tabu search (TS) metaheuristic algorithm is executed multiple times, while in the initialisation of each TS the best solution found from all previous executions is used. The proposed RTS is found to be the best among three alternative TS initialisation schemes, in regard to the impact on the success rate of the algorithm. A numerical method is proposed for checking network observability, unlike most existing metaheuristic OPP methods, which are based on topological observability methods. The proposed RTS method is tested on the IEEE 14, 30, 57 and 118-bus test systems, on the New England 39-bus test system and on the 2383-bus power system. The obtained results are compared with other reported PMU placement methods. The simulation results show that the proposed RTS method finds the minimum number of PMUs, unlike earlier methods which may find either the same or even higher number of PMUs.

• Publisher: The Institution of Engineering and Technology,Institution of Engineering and Technology,The Institution of Engineering & Technology
• Subject: 2383‐bus power system / Applied sciences / Control systems / Electrical engineering. Electrical power engineering / Electrical machines / Electrical power engineering / Exact sciences and technology / IEEE 118‐bus test system / IEEE 14‐bus test system / IEEE 30‐bus test system / IEEE 57‐bus test system / Mathematical models / metaheuristic OPP method / Miscellaneous / Monitoring / network observability / New England 39‐bus test system / numerical observability method / Operation. Load control. Reliability / optimal phasor measurement unit placement / optimal PMU placement / Optimization / phasor measurement / Phasors / Placement / Power networks and lines / power system control / power system monitoring / power system protection / Recursive / recursive estimation / recursive Tabu search method / Regulation and control / RTS method / search problems / Tabu search / topological observability method / TS initialisation scheme / TS metaheuristic algorithm