XIANG Jinye,ZHANG Aijun,CHEN Dezhi,et al.Multi-DC emergency control strategies for thermal stability of UHV loop network faults[J].Electric Power Automation Equipment,2019,39(09):187-191.
XIANG Jinye,ZHANG Aijun,CHEN Dezhi,et al.Multi-DC emergency control strategies for thermal stability of UHV loop network faults[J].Electric Power Automation Equipment,2019,39(09):187-191.DOI: 10.16081/j.epae.201909014.
Multi-DC emergency control strategies for thermal stability of UHV loop network faults
Firstly,an accurate and traversal search method for locating the thermal stability problem under interruption faults of UHV(Ultra High Voltage) loop network is proposed. Then an optimization model for UHVDC(UHV Direct Current) to correct thermal stability problem of loop network is established,and a fast and practical method for fixed-step gradient descent optimization is proposed. In the solving process,the concept of equivalent sending and receiving end of the target transmission lines of UHV loop network is proposed,and the physical meaning of the control strategy optimization method is enhanced by giving the multi-DC modulation sensitivity,modulation direction,modulation step size,the modulation effect of each iteration and so on. Finally,based on the actual UHV loop network engineering,the PSD-BPA simulation software is used to simulate and verify the effectiveness of the proposed method and strategy.
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