FAULT LOCATION BASED ON COMPREHENSIVE GREY RELATIONAL DEGREE FOR FLEXIBLE DC DISTRIBUTION NETWORK

Xu Yan; Hu Ziqi; Dong Haoran; Ma Tianxiang

doi:10.19912/j.0254-0096.tynxb.2021-1416

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 324-331. DOI: 10.19912/j.0254-0096.tynxb.2021-1416

FAULT LOCATION BASED ON COMPREHENSIVE GREY RELATIONAL DEGREE FOR FLEXIBLE DC DISTRIBUTION NETWORK

Xu Yan¹, Hu Ziqi¹, Dong Haoran¹, Ma Tianxiang²

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Abstract

In order to solve the problem of high accuracy and rapidity requirements for fault location in flexible DC distribution networks, a fault location method for flexible DC distribution network based on grey relational degree is proposed. The similarity of the first and last line mode traveling wave differential current waveforms is analyzed using grey relational degree, and the fault location is achieved by solving the optimal time shift. Finally, a six-terminal flexible DC distribution network model is built in Matlab/Simulink for simulation and validation, showing that the method can complete the rapid and accurate location of all types of faults on the whole line, and has a certain resistance to transition resistance, suitable for the case of low sampling frequency, and has high reliability.

Key words

DC distribution network / fault location / relativity / grey relational degree / travelling differential current

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Xu Yan, Hu Ziqi, Dong Haoran, Ma Tianxiang. FAULT LOCATION BASED ON COMPREHENSIVE GREY RELATIONAL DEGREE FOR FLEXIBLE DC DISTRIBUTION NETWORK[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 324-331 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1416

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