一种在线电力系统静态稳定增强控制算法

提出了一种在线应用的电力系统静态稳定增强控制算法。这一算法基于连续线性规划技术，将增强控制问题分解为稳定临界点及其控制灵敏度的计算问题和基于灵敏度的优化控制问题。在前一个子问题中，运用基于连续潮流的间接方法分别计算得到每个故障的稳定临界点。在后一个子问题中，采用了参与控制集和部分变量的可控区间限制等策略来提高线性规划问题的计算有效性。一个3000节点的实际系统的应用表明，文中所提算法是有效实用的。

AN ON-LINE ENHANCEMENT CONTROL ALGORITHM FOR STATIC STABILITY IN POWER SYSTEM

An on-line enhancement control algorithm for voltage stability in large-scale power system is presented. Using the successive linear programming technique, the voltage stability enhancement control problem can be divided into a computation sub-problem for the collapse point and the corresponding sensitivities and a sensitivity-based linear programming optimization sub-problem. In the previous sub-problem, an indirect method based on the continuation power flow model is used to obtain the critical point of each severe contingency. In the latter sub-problem, the candidate control group strategy and the controllable region limitation strategy are used to improve the computation efficiency of linear programming problem. Case studies with a practical 3000-bus power system indicate that the proposed method is effective and suitable for on-line application in a large scale power system.