DC Emergency Power Control Strategy for AC/DC Multi-Channel Interconnected System - Energy and Power Engineering

EPE > Vol.9 No.4, April 2017

DC Emergency Power Control Strategy for AC/DC Multi-Channel Interconnected System ()

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Download as PDF (Size: 1575KB) PP. 735-747

DOI: 10.4236/epe.2017.94B079 2,699 Downloads 3,580 Views

Author(s)

Yicong Wang¹, Dejun Shao², Zhiqiang Zhang³, Youping Xu², Xiaojie Pan², Haishun Sun¹

Affiliation(s)

¹State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, China.
²Central China Branch of State Grid Corporation of China, Wuhan, China.
³China Electric Power Research Institute, Beijing, China.

ABSTRACT

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.

KEYWORDS

DC Emergency Control, Critical Stable Transmission Power, Dijkstra Algorithm, Entropy Weight, Multi-Channel Cooperated Emergency Control

Share and Cite:

Wang, Y. , Shao, D. , Zhang, Z. , Xu, Y. , Pan, X. and Sun, H. (2017) DC Emergency Power Control Strategy for AC/DC Multi-Channel Interconnected System. Energy and Power Engineering, 9, 735-747. doi: 10.4236/epe.2017.94B079.

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