Transactions of China Electrotechnical Society  2017, Vol. 32 Issue (5): 143-151    DOI:
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An Adaptive Fault Location Algorithm Based on PMU Measurement for Series Compensated Transmission Lines
Luo Shenzeng1,Li Yinhong1,You Hao2,Li Benyu2,Shi Hengchu2
1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China
2.Yunnan Electric Power Dispatching Control Center Kunming 650011 China

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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 wordsSeries compensated transmission lines      phasor measurement units      on-line parameters      adaptive fault location algorithm     
Received: 11 January 2016      Published: 22 March 2017
PACS: TM711  
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Luo Shenzeng
Li Yinhong
You Hao
Li Benyu
Shi Hengchu
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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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