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中文摘要：
针对电力系统网架难以一次性全部安装所需的相量测量单元PMU的问题,提出考虑量测冗余度的多阶段PMU优化配置方法。首先给出系统量测冗余度的计算方法,在保证每一阶段最大限度地提高系统量测冗余度及考虑已有PMU配置的基础上,将PMU优化配置分为2个阶段：第1阶段保证系统全局可观测;第2阶段保证在线路N-1故障情况下不丧失对系统的观测能力。接着采用改进遗传禁忌搜索算法,对新英格兰39节点和IEEE 118系统进行算例仿真,得到多阶段PMU优化配置方案。结果表明：考虑冗余度的多阶段PMU优化配置方法在保证每一阶段安装的PMU都能发挥最大效用的同时,很好地协调了PMU配置的经济性和可靠性。
英文摘要：
Due to the high price of phasor measurement units（PMUs）,all PMUs needed in a system cannot be installed at one time.Meanwhile,the power system network undergoes multistage dynamic development.To deal with these problems,this paper presents a multistage optimal placement method considering redundancy for a PMU.Based on the proposed calculation of system redundancy,this method maximizes the system redundancy at each stage and takes existent PMUs into consideration.On this basis,the optimal placement of PMUs are divided into two stages.In the first stage,the observability of all buses in the system is guaranteed.In the second stage,the overall system is observed under the N-1 fault of the transmission line.An improved genetic and tabu search algorithm is used to solve this problem.Through the simulation of a New England 39-bus and IEEE 118 system,reasonable schemes for the multistage PMU optimal placement considering redundancy were obtained.Meanwhile,the feasibility and effectiveness of the proposed method were verified.
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