【摘要】：溪洛渡—浙西特高壓直流投運(yùn)后,將與復(fù)龍—奉賢特高壓直流形成我國(guó)屆時(shí)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(wǎng)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(diào)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(duì)送端區(qū)域電網(wǎng)潮流影響較小;但存在多個(gè)直流同時(shí)閉鎖的風(fēng)險(xiǎn),需要采取大量的控制措施。研究了溪浙直流投運(yùn)后與受端交流電網(wǎng)相互影響規(guī)律,并對(duì)交流系統(tǒng)和直流系統(tǒng)重要參數(shù)進(jìn)行敏感性分析。結(jié)果表明,優(yōu)化參數(shù)能有效提升受端電網(wǎng)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(guó)電力科學(xué)研究院;
【分類號(hào)】：TM721.1

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本文編號(hào)：2351599