Review of the Synchronous Measurement Technology and Its Application in Distribution Networks

doi:10.12204/j.issn.1000-7229.2023.05.002

Abstract

Abstract:

The use of power electronics in distribution networks has significantly increased owing to the increase in the use of distributed clean energy and flexible loads. Moreover, the use of dynamic processes in distribution networks has become more frequent and complex, and the state observability and coordinated control of the system has become increasingly important. Therefore, high-frequency and accurate data on distribution networks should be obtained using synchronous phase measurement technology. In this paper, the development status and application of synchronous phase measurement technology in distribution networks is reviewed, and the features of synchronous phase measurement technology in distribution networks are concluded considering the device function and system architecture. Furthermore, the typical applications of synchronous phasor measurement technology in state estimation, fault diagnosis and location, and coordinated control in China are summarized. Finally, the development trend and standardization requirements of synchronous phasor measurement technology for distribution networks are discussed.

Key words: synchronous phasor measurement, smart distribution network, state estimation, fault diagnosis and location

CLC Number:

TM713

WEI Xinchi, QIN Longyu, FANG Chen, SHI Fang, LIU Jinsong, LIU Shu. Review of the Synchronous Measurement Technology and Its Application in Distribution Networks[J]. ELECTRIC POWER CONSTRUCTION, 2023, 44(5): 13-22.

Figures/Tables 6

Table 1 Application of synchronous measurement technology and the challenges in distribution networks

Table 2 Comparison of technical characteristics between distribution level and transmission level PMUs

Fig.1 Typical architecture of synchronous measurement system for distribution network

Fig.2 Probability of state estimation errors with PMUs

Fig.3 Control strategy for synchronous fixed-frequency microgrid

Fig.4 International standards for synchronous measurement technology in distribution networks

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