發(fā)布時間：2018-11-23 12:22

【摘要】：溪洛渡—浙西特高壓直流投運后,將與復龍—奉賢特高壓直流形成我國屆時最密集的特高壓多直流送出系統(tǒng)。分析了多直流送出系統(tǒng)與交流電網的耦合特性,提出了多直流送端系統(tǒng)故障后送端交直流協(xié)調控制策略。多直流送出系統(tǒng)由于電氣距離較近,故障后相互支援可靠性較高,且對送端區(qū)域電網潮流影響較小;但存在多個直流同時閉鎖的風險,需要采取大量的控制措施。研究了溪浙直流投運后與受端交流電網相互影響規(guī)律,并對交流系統(tǒng)和直流系統(tǒng)重要參數(shù)進行敏感性分析。結果表明,優(yōu)化參數(shù)能有效提升受端電網穩(wěn)定性。
[Abstract]:After the Xiluodu-west Zhejiang UHV DC is put into operation, the most dense UHV DC delivery system will be formed in our country with Fulong-Fengxian UHV DC. The coupling characteristics of multi-DC power supply system and AC power network are analyzed, and a coordinated AC / DC control strategy is proposed. Because of the close electrical distance, the multi-DC power supply system has high reliability of mutual support after failure, and has little influence on the power flow of the power supply area, but there is a risk of multiple DC simultaneous locking, which requires a large number of control measures. In this paper, the interaction law between DC and AC power grid is studied, and the sensitivity of the important parameters of AC system and DC system is analyzed. The results show that the optimal parameters can effectively improve the stability of the receiver power network.
【作者單位】： 中國電力科學研究院;
【分類號】：TM721.1

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本文編號：2351599