Design of Wide-area Damping Controller Considering the Changes of Operating Point

SUO Jianglei; HU Zhijian

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Design of Wide-area Damping Controller Considering the Changes of Operating Point

SUO Jianglei #,HU Zhijian *

School of Electrical Engineering,Wuhan University,430072

*Correspondence author

#Submitted by

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Funding: Ph.D. Programs Foundation of Ministry of Education of China （No.20110141110032）

Opened online: 3 October 2014

Accepted by: none

Citation: SUO Jianglei,HU Zhijian.Design of Wide-area Damping Controller Considering the Changes of Operating Point[OL]. [ 3 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4611414

With regard to the uncertainty of wind power and negative effects to the area-damping of system caused by long-distance transmission of large-scale wind power under high permeability, a design method of wide-area controller is put forward which is applicable to a great change in the operation modes of power system such as a dramatic change of wind speed in wind farms. A model of power system is established using time-delay linear parameters change method and the nonlinear problem is described by the clever use of linear equation. Then the whole parameter change range is meshed and the controllers are designed respectively. Finally the scheduling criteria is formulated by a triangle membership function and the controller weights is also assigned so as to construct a wide-area gain-scheduling controller which can cover the full range of parameter change. The time domain simulation of a test system shows that the proposed method has an ideal effect even a great change has occurred to the operation modes and has stronger robustness compared with the traditional pole assignment method.

Keywords:integration of large-scale wind power into the grid；wide-area controller; time delay; linear matrix inequality; gain-scheduling Introduction

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