A matrix-perturbation-theory-based optimal strategy for small-signal stability analysis of large-scale power grid  

作　　者：Yude Yang Jixing Zhao Hui Liu Zhijun Qin Jun Deng Junjian Qi 

机构地区：[1]College of Electrical Engineering,Guangxi University,Nanning 530004,China [2]State Grid Shaanxi Electric Power Research Institute,Xi’an,China [3]Department of Electrical and Computer Engineering,University of Central Florida,Orlando,FL 32816,USA

出　　处：《Protection and Control of Modern Power Systems》2018年第1期362-372,共11页现代电力系统保护与控制（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.51577085).

摘　　要：In this paper,a sensitivity matrix based approach is proposed to improve the minimum damping ratio.The proposed method also avoids burdensome deviation calculations of damping ratio of large-scale power grids when compared to the Small-Signal-Stability Constrained Optimal Power Flow(SSSC-OPF)approach.This is achieved using the Matrix Perturbation Theory(MPT)to deal with the 2nd order sensitivity matrices,and the establishment of an optimal corrective control model to regulate the output power of generating units to improve the minimum damping ratio of power grids.Finally,simulation results on the IEEE 9-bus,IEEE 39-bus and a China 634-bus systems show that the proposed approach can significantly reduce the burden of deviation calculation,while enhancing power system stability and ensuring calculation accuracy.

关 键 词：Matrix perturbation theory 2nd order sensitivity Optimal strategy Small-signal stability 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]