Abstract：The phasor measurement unit (PMU) placement schemes based on heuristic method are widely applied nowadays. However, these algorithms fail to place PMU by steps in an incomplete observable power system, and also fail to fit the observability and economy in N-1 fault at the same time. So an optimized scheme of staged PMU placement which can ensure the observability in N-1 fault is discussed in this paper. Firstly, the wide system is divided into zones by communication, economic benefit and balance. Then the vulnerability index of each node in the zones is sorted according to entropy. Hence, the theory of maximum tree is used in the zonal and phased placement of PMU. At last, PMU placement is checked and added to fit the observability in N-1 case. The test on IEEE 39-node system shows the economy, security and time-efficiency of the proposed method. Moreover, compared with other PMU placement algorithms, the scheme has better performance on the condition that PMUs have been already placed in real system.
徐岩, 应璐曼, 王增平. 基于最大树理论的分阶段相量测量单元配置方案[J]. 电工技术学报, 2016, 31(4): 155-162.
Xu Yan, Ying Luman, Wang Zengping. Staged Phasor Measurement Unit Placement Algorithm Based on Theory of Maximum Tree. Transactions of China Electrotechnical Society, 2016, 31(4): 155-162.
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