Feasibility Simulation of Double-ended Traveling Wave Location of Complex Collector Lines
The collector line of a wind farm is mainly composed of radial cable overhead mixing frame.The structure of the collector line is complex.When a single-phase grounding fault occurs in the collector line,internal ranging by internal resistance method can merely acquire the distance between fault point and booster station,and is inadequate in determining the main branch,resulting in low fault seeking efficiency.Based on the principle of wavelet transform,the fault travelling wave current wave head is identified,and the collector circuit simulation model is built to simulate the collector circuit fault under different conditions.Then the simulation fault point is compared with the calculated fault point.The test results show that the travelling wave fault location method has good stability and accuracy in coping with complex collector circuit.
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