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In this paper, the ±1100 kV HVDC system impedance model is analyzed under various disturbances. For various disturbances caused by induced current from AC line in the same route, by AC faults and by converter faults, the positions of voltage simulating sources in the DC loop for impedance analysis are different. Taking the 2688 km ±1100 kV DC power transmission project from Zhundong to Chongqing for...
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