电力系统电压崩溃的显式模型预测控制  

Explicit model predictive control of voltage collapse in power systems

作　　者：张聚[1] 陈圆[1] 丁靖[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310032

出　　处：《电力系统保护与控制》2012年第16期8-14,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(60974042)

摘　　要：由于电力系统不仅包含非线性动态,还包含了离散事件以及一些离散的操纵变量,因此电力系统本质上是一个复杂的混杂系统。利用混合逻辑动态(MLD)模型和分段仿射模型(PWA)描述电力系统的非线性动态特性、离散事件和变量,建立电力系统的混杂系统模型。针对电力系统的混杂模型,将显式模型预测控制技术应用于电力系统,并对电力系统的电压进行稳定控制。数值仿真研究表明,所提方法能够预测和防止电压崩溃,并对于故障情况能够迅速地做出响应,表明该方法是有效的。Because power systems incorporate not only nonlinear dynamics but also discrete events and some discrete manipulated variables, a power system is in essential a complex hybrid system. After describing the nonlinear dynamics, discrete events and variables of power system with Mixed Logical Dynamic （MLD） and Piece Wise Aftlne （PWA） respectively, a hybrid model of power system is developed. The explicit model predictive control technique is applied to MLD model of the power system to control the voltage collapse in power systems. Numerical simulations show that the explicit model predictive control can successfully stabilize the voltage, predict and prevent a voltage collapse in the power system, and can respond rapidly to fault situations in the power system, and thus show that the method proposed in this paper is effective.

关 键 词：电力系统 紧急电压控制 PWA近似 MLD模型 显式模型预测控制 

分 类 号：TM76[电气工程—电力系统及自动化]