【摘要】：提出一種基于支路電壓方程的電壓穩(wěn)定指標(biāo),該指標(biāo)具有顯式表達(dá)式,可結(jié)合PMU量測(cè)實(shí)現(xiàn)在線計(jì)算和應(yīng)用。首先,利用電壓功率靈敏度在電壓崩潰點(diǎn)趨于無(wú)窮大的特性,推導(dǎo)獲得該指標(biāo)。其次,通過(guò)分析靜態(tài)負(fù)荷特性對(duì)該指標(biāo)假設(shè)條件(即P-V曲線電壓崩潰點(diǎn)處特性)的影響,揭示了該指標(biāo)對(duì)靜態(tài)負(fù)荷特性的適應(yīng)性,并用單支路系統(tǒng)進(jìn)行了仿真驗(yàn)證。進(jìn)一步,采用多支路系統(tǒng)驗(yàn)證了該指標(biāo)可有效表征支路電壓的穩(wěn)定性,且具有較高的適用性。最后,探討了應(yīng)用等效方法改進(jìn)該指標(biāo),從而提升多節(jié)點(diǎn)系統(tǒng)中該指標(biāo)準(zhǔn)確性的方法,并用10節(jié)點(diǎn)系統(tǒng)驗(yàn)證了改進(jìn)指標(biāo)的有效性。
[Abstract]:In this paper, a voltage stability index based on branch voltage equation is proposed, which has explicit expression and can be calculated and applied online in combination with PMU measurement. Firstly, the index is derived by using the characteristic that the voltage power sensitivity tends to infinity at the voltage collapse point. Secondly, by analyzing the influence of static load characteristics on the hypothetical conditions of the index (that is, the characteristics of voltage collapse point of P 鈮，

本文編號(hào)：2473950