Power system state space identification based on multi-innovation coupling least square algorithm

被引：0

作者：

Suo, Jianglei ^{[1
]}

Hu, Zhijian ^{[1
]}

Liu, Yukai ^{[2
]}

Zhang, Ziyong ^{[1
]}

Wang, Wei ^{[3
]}

机构：

[1] School of Electrical Engineering, Wuhan University, Wuhan

[2] State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an

[3] Guangzhou Power Supply Company Limited, Guangzhou

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2015年 / 35卷 / 07期

关键词：

Electric power systems; Low frequency oscillation; Multi-innovation coupling least square algorithm; State space; System identification; Wide area damping controller;

D O I：

10.16081/j.issn.1006-6047.2015.07.011

中图分类号：

学科分类号：

摘要：

A practical identification method of power system state space model is proposed for the engineering application of wide area damping controller, which adopts the coupling least square algorithm to make full use of the intermediate data during identification and avoid the redundancy due to the repeated iterative calculation of high dimensional covariance matrix. Combined with the multi-innovation identification, the multi-innovation coupling least square algorithm is deduced to further improve the identification accuracy. Without any additional excitation, the noise-like signals existing in the system are used to complete the power system identification. Simulations for 4-machine 2-area and 10-machine 39-bus test systems are carried out to verify the advantages of the proposed method: simple identification process, small calculation load, high identification accuracy, and easy online data updating according to system structure change. ©, 2015, Electric Power Automation Equipment Press. All right reserved.

引用

页码：65 / 73

页数：8

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