Improved interval time-delay compensation method for WPSS

被引：0

作者：

Chen, Gang ^{[1
]}

Zhang, Hua ^{[1
]}

Cheng, Lin ^{[2
]}

Teng, Yufei ^{[1
]}

Ding, Lijie ^{[1
]}

Zhang, Fang ^{[2
]}

机构：

[1] State Grid Sichuan Electric Power Research Institute, Chengdu,610072, China

[2] State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Tsinghua University, Beijing,100084, China

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2014年 / 34卷 / 12期

关键词：

Energy transfer - Time domain analysis - Timing circuits - Electric power transmission networks - Frequency domain analysis;

D O I：

10.3969/j.issn.1006-6047.2014.12.013

中图分类号：

学科分类号：

摘要：

The key of WPSS(Wide-area Power System Stabilizer) engineering application is the proper compensation of time-delay for the feedback input signal. The measured data of PMU(Phasor Measurement Unit) time-delay in real grid present the characteristics of random distribution and strong vibration. An improved method of interval time-delay compensation is presented to deal with the variation of time-delay, which takes the average delay for a certain time before its action as the reference for selecting the interval compensator to avoid the wrong result caused by time-delay chattering. The results of open-loop and close-loop time-domain and frequency-domain simulations for two-area four-machine power system show the improved method adapts to the delay variation better. RTDS simulation of real power grid verifies the effectiveness and feasibility of the proposed method. ©, 2014, Electric Power Automation Equipment Press. All right reserved.

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页码：76 / 82

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