电网技术Issue(4)：1033-1038,6.DOI:10.13335/j.1000-3673.pst.2015.04.024
考虑电力系统跳变特性的时滞稳定控制策略
A Time-Delay Stability Control Strategy Considering Jump Characteristic of Power System
摘要
Abstract
The jump of power system operation states and parameters may lead to system instability because the system after jumping uses the time-delay control strategy before jumping. In allusion to this problem, the time-delay control strategy based on discrete Markov theory is proposed in this paper. Firstly, Newton-Leibniz formula indicated by free weighting matrix and time-delay system model considering Markov jump are brought into Lyapunov- Krasovskii function. Then nonlinearity minimization controllers considering jump characteristic of power system for time-delay system are formed. On this basis, nonlinear terms in control algorithm are decoupled by using Schur complement. Furthermore, the matrix inequality with nonlinearity terms is transformed to standard linear matrix inequality, thereby avoiding inefficiency caused by iteration. The time-domain simulation results of 16-generators and 68-nodes power system verify the effective control to power system oscillations before and after jumping. And the results also validate the power system after jumping will not become unstable due to the time-delay control strategy before jumping. Compared with time-delay control without considering jump, the proposed method possesses better control effect.关键词
跳变/时滞控制策略/L-K 泛函/离散 Markov理论Key words
jump/time-delay control strategy/L-K functional/discrete Markov theory分类
信息技术与安全科学引用本文复制引用
马静,李益楠,李俊臣,朱祥胜,王增平..考虑电力系统跳变特性的时滞稳定控制策略[J].电网技术,2015,(4):1033-1038,6.基金项目
国家重点基础研究发展计划项目(973项目)(2012CB215200)；国家自然科学基金项目(50907021，51277193)。Project Supported by National Basic Research Program of China (973 Program)(2012CB215200) and National Natural Science Foundation of China (50907021,51277193) （973项目）
