【摘要】：提出一種基于支路電壓方程的電壓穩(wěn)定指標,該指標具有顯式表達式,可結合PMU量測實現(xiàn)在線計算和應用。首先,利用電壓功率靈敏度在電壓崩潰點趨于無窮大的特性,推導獲得該指標。其次,通過分析靜態(tài)負荷特性對該指標假設條件(即P-V曲線電壓崩潰點處特性)的影響,揭示了該指標對靜態(tài)負荷特性的適應性,并用單支路系統(tǒng)進行了仿真驗證。進一步,采用多支路系統(tǒng)驗證了該指標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,探討了應用等效方法改進該指標,從而提升多節(jié)點系統(tǒng)中該指標準確性的方法,并用10節(jié)點系統(tǒng)驗證了改進指標的有效性。
[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：2473950