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A novel approach to evaluating small-disturbance voltage stability of large scale AC/DC power systems

机译:一种评估大型AC / DC电力系统小扰动电压稳定性的新颖方法

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摘要

Considering generator dynamics, load dynamics and HVDC dynamics, the differential and algebraic equations for analyzing small-disturbance voltage stability of large scale AC/DC power systems are established and a new voltage stability criterion is presented based on some reasonable assumptions and rigorous mathematical derivation. The criterion is that the determinants of two different power flow Jacobian matrices should have the same signs. By using the criterion, the dynamic problem of power system small-disturbance voltage stability can be treated as a static problem, so the eigenvalue analysis is avoided and the computation burden is reduced. The calculation results on two sample systems show that the novel approach proposed in this paper is correct and feasible.
机译:考虑发电机动力学,负载动力学和高压直流输电动力学,建立了用于分析大型交直流电力系统小扰动电压稳定性的微分方程和代数方程,并基于一些合理的假设和严格的数学推导,提出了一种新的电压稳定判据。判据是两个不同的潮流Jacobian矩阵的行列式应具有相同的符号。利用该准则,可以将电力系统小扰动电压稳定性的动态问题视为静态问题,从而避免了特征值分析,减少了计算负担。在两个样本系统上的计算结果表明,本文提出的新方法是正确可行的。

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