基于过完备字典设计的电力系统扰动定位方法

doi:10.19595/j.cnki.1000-6753.tces.190451

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Abstract Disturbance location of power system quickly and accurately is an important precondition to implement safety and stability control measures of power system. The disturbance source has sparse characteristics in the spatial distribution since the disturbance will not occur in a large range at the same time. How to use the limited number of phasor measurement unit devices to perceive the disturbance in the power system is an important research topic. This paper presented a power system disturbance positioning based on a overcomplete dictionary design, its innovation is based on the changes of the system topology or electrical parameters of the disturbance to construct a overcomplete dictionary, in combination with compressed sensing reconstruction algorithm to recover from low dimensional phasor measurement unit observation data of the sparse characteristics to high dimensional disturbance location data, then the disturbance of power system got located. The generator shedding and the load shedding disturbance are taken as examples. A large number of simulation results show that the method proposed in this paper can locate the disturbance source with high accuracy, and it has important reference significance for other types of disturbance location.

Key words： Disturbance location overcomplete dictionary sparse features generator shedding load shedding

Received: 22 April 2019 Published: 07 April 2020

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TM744

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	Yu Huanan
	Li Yongxin
	Wang He

Cite this article:

Yu Huanan,Li Yongxin,Wang He. Disturbance Location Method of Power System Based on Over-Complete Reconstruction Dictionary Design[J]. Transactions of China Electrotechnical Society, 2020, 35(7): 1444-1453.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190451 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I7/1444

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