基于同步相量测量单元的串联补偿线路自适应故障定位算法

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Abstract

An adaptive fault location algorithm was proposed based on synchronized phasor measurement unit(PMU)for series compensated transmission lines.Based on the monitored synchronized voltage phasor and current phasor on both sides,the on-line parameters of series compensated transmission lines required for fault location algorithm were obtained by utilizing the least square estimation method.When a line in failure,distributed line parameter model and phase characteristics of fault point voltage and fault path current were utilized to form fault location function.Therefore,no model of series compensated device is needed.Theoretical analysis and simulation results show that the fault location function is monotonic and changes linear approximately in the possible fault sections.As a result,the fault point can be extracted efficiently and precisely by method of bisection or secant.Simulation results based on PSCAD/EMTDC and Matlab show that the fault location procedure is implemented simple,fast and accurate.Besides,the algorithm is suitable to various fault types,fault positions and fault resistances.

Key words： Series compensated transmission lines phasor measurement units on-line parameters adaptive fault location algorithm

Received: 11 January 2016 Published: 22 March 2017

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TM711

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	Articles by authors
	Luo Shenzeng
	Li Yinhong
	You Hao
	Li Benyu
	Shi Hengchu

Cite this article:

Luo Shenzeng,Li Yinhong,You Hao等. An Adaptive Fault Location Algorithm Based on PMU Measurement for Series Compensated Transmission Lines[J]. Transactions of China Electrotechnical Society, 2017, 32(5): 143-151.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I5/143

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