Optimal µPMU Placement Considering Node Importance and Multiple Deployed Monitoring Devices in Distribution Networks

Ruifeng Zhao, Jiangang Lu, Yizhe Chen, Yifan Gao, Kai Gan, Ming Li, Chengzhi Wei, Runhong Huang, Fan Xiao and Liang Che ()
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Ruifeng Zhao: Power Dispatching and Control Center, Guangdong Power Grid Co., Ltd., Guangzhou 510600, China
Jiangang Lu: Power Dispatching and Control Center, Guangdong Power Grid Co., Ltd., Guangzhou 510600, China
Yizhe Chen: Zhaoqing Power Supply Bureau, Guangdong Power Grid Co., Ltd., Zhaoqing 526040, China
Yifan Gao: Zhaoqing Power Supply Bureau, Guangdong Power Grid Co., Ltd., Zhaoqing 526040, China
Kai Gan: Zhaoqing Power Supply Bureau, Guangdong Power Grid Co., Ltd., Zhaoqing 526040, China
Ming Li: Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510663, China
Chengzhi Wei: Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510663, China
Runhong Huang: Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510663, China
Fan Xiao: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Liang Che: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China

Energies, 2025, vol. 18, issue 2, 1-19

Abstract: The placement of micro phasor measurement units in an active distribution network can improve the monitoring performance of the system. However, the price and placement cost of micro phasor measurement units are high, so existing research mostly focuses on solving the problem of achieving global observability with the minimum number of micro phasor measurement units. However, the problems of frequent topology change in the distribution network and the increase in the number of faults that will be caused by the high proportion of distributed energy resources connected to the system may lead to the above placement scheme losing the observability of the system. The balance of maintaining the number of micro phasor measurement units placed while ensuring the monitoring stability of the system remains a crucial challenge. To address this issue, a micro phasor measurement unit placement method that considers the observability of multiple monitoring devices and node importance is proposed in this paper, which, on the one hand, fully considers the impact of the observability of existing monitoring devices on the micro phasor measurement units placement scheme and reduces the number of micro phasor measurement units that are used to achieve global observability, and, on the other hand, gives priority to placing the micro phasor measurement units at important nodes in the distribution network that are closely related to observation stability, improving the observation performance of the system. The superiority of the proposed μPMU method is verified in standard systems such as IEEE-33, IEEE-34, and P&G69, in which the number of required μPMUs is reduced by 20%, and the observation performance of the system is improved by 30% in special cases.

Keywords: distribution network; ?PMUs; node importance; optimal placement methods (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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