应用MPC和轨迹灵敏度技术实现最优协调电压控制  

Optimal coordinated voltage control using MPC and trajectory sensitivity technique

作　　者：刘水平[1] 刘明波[1] 谢敏[1] 

机构地区：[1]华南理工大学电力学院广东省绿色能源技术重点实验室,广东广州510640

出　　处：《电力系统保护与控制》2011年第1期1-6,14,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(50777021;50907023)~~

摘　　要：基于模型预测控制的基本思想,设计了一种紧急电压控制器,协调各种不同类型和性质的控制手段来维持系统的长期电压稳定性。在预测控制模型的目标函数中,考虑了控制实施代价和负荷节点电压偏差;其等式约束条件为连续—离散时间微分—代数方程组。采用混合动力系统的轨迹灵敏度技术先将该模型线性化得到一个二次规划问题,并采用Matlab中的二次规划函数来求解。在IEEE50机145节点系统上的仿真结果表明,所提方法具有数值稳定性好和计算速度快的优点。Based on the basic principle of model predictive control,an emergency voltage controller is designed.This controller can coordinate control means of different types and nature to maintain long-term voltage stability of power systems.In the objective function of this predictive control model,both control cost and voltage deviation at load buses are considered,and its equality constraints are expressed by continuous and discrete time differential-algebraic equations.The trajectory sensitivity technology of hybrid dynamic systems is applied to convert this original model to a quadratic programming problem through linearization,which can be solved by quadratic programming function in Matlab.The simulation results in IEEE 50-machine 145-bus system demonstrate that the proposed method has good numeric stability and fast computational speed.

关 键 词：紧急电压控制器 长期电压稳定 模型预测控制 轨迹灵敏度 二次规划 

分 类 号：TM712[电气工程—电力系统及自动化]