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DC Emergency Power Control Strategy for AC/DC Multi-Channel Interconnected System
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作者 Yicong Wang Dejun Shao +3 位作者 Zhiqiang Zhang Youping Xu Xiaojie Pan haishun sun 《Energy and Power Engineering》 2017年第4期735-747,共13页
Inter-regional transmission line fault often results in power flow transferring, tie-line overloading and system islanding. Traditional control methods such asgenerator tripping and load shedding are costly, and also ... Inter-regional transmission line fault often results in power flow transferring, tie-line overloading and system islanding. Traditional control methods such asgenerator tripping and load shedding are costly, and also have undesirable impacts on theloadside. In this paper, a new emergency power control strategy is proposed for multi-channel interconnected system by using the overload capacity of non-fault DC lines. First of all, the capacity of emergency power control can be acquired by critical transmission power of a certain tie-line for stability. Secondly, the shortest electric distance can be calculated by Dijkstra algorithm, and then the priority of emergency control of the DC lines can be obtained by the entropy weight method. When the inter-regional transmission power decreases and the effect of single DC line emergency control is poor, the multi-channel cooperative emergency control strategy is proposed to ensure the system stability. Simulation results verify the effectiveness of the method proposed. 展开更多
关键词 DC EMERGENCY CONTROL Critical Stable Transmission Power DIJKSTRA Algorithm Entropy Weight MULTI-CHANNEL Cooperated EMERGENCY CONTROL
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