Research on Optimal D-PMU Placement Technology to Improve the Observability of Smart Distribution Networks

Xiangyu Kong, Xiaoxiao Yuan, Yuting Wang, Yong Xu and Li Yu
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Xiangyu Kong: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Xiaoxiao Yuan: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Yuting Wang: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Yong Xu: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Li Yu: Electric Power Research Institute of China Southern Power Grid, Guangzhou 510080, China

Energies, 2019, vol. 12, issue 22, 1-23

Abstract: With the continuous development of smart distribution networks, their observable problems have become more serious. Research on the optimal placement of the distribution phasor measurement unit (D-PMU) is an important way to improve the measurability, observability and controllability of a smart distribution network. In this paper, the optimal D-PMU placement methods and implementation technology were studied to determine the optimal D-PMU placement scheme. Considering the bus vulnerability index and the different operating states of the system, the more practical one-time optimal placement methods to ensure complete system observability was proposed. On this basis, the system's measurement redundancy and unobservable depth were considered to realize the multistage optimal D-PMU placement. The corresponding mathematical model and solution flow were given. Then the implementation technology of the methods was studied and the optimal D-PMU placement assistant decision-making software for smart distribution network was developed. Thereby, the structure and requirements of different distribution networks can be satisfied. The application analysis, functional architecture and the overall design process were given. Finally, the methods and software were analyzed by using the IEEE 33 bus system and an actual project, the Guangzhou Nansha Yuan'an Substation. The verification results showed that the method and software mentioned in this paper can provide convenient and quick operation for optimal D-PMU placement, improve the efficiency of smart distribution network planning work, and promote the theoretical application level of smart distribution network planning results.

Keywords: optimal distribution phasor measurement unit placement; observability; bus vulnerability; measurement redundancy; unobservable depth; assistant decision-making software. (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: 2019
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