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A frequency monitoring system development for wide-area power grid protection

机译：用于广域电网保护的频率监控系统开发

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摘要

There have been recent research activities on GPS-based FNET to prevent wide-area blackouts by monitoring frequency deviation. This paper introduces a system for monitoring regional frequencies in power grid developed as an advanced research project for intelligent wide-area protective relaying in South Korea. The system is implemented by modeling an actual 345 kV transmission system of South Korea using EMTP-RV and by measuring voltages and currents at five regions. The frequencies are estimated using our previous proposed method, a frequency estimation algorithm with gain compensation. The monitoring system implemented is used to examine frequency propagation effects and various fault conditions. Simulation results showed that the proposed system could achieve good performance regarding the frequency monitoring under both steady states and dynamic fault conditions.
机译：最近有基于GPS的FNET的研究活动，通过监视频率偏差来防止广域停电。本文介绍了一种用于监控电网区域频率的系统，该系统是韩国智能广域保护继电保护的一项高级研究项目。通过使用EMTP-RV对韩国的实际345 kV输电系统进行建模并测量五个区域的电压和电流来实现该系统。使用我们先前提出的方法（具有增益补偿的频率估计算法）估计频率。实施的监视系统用于检查频率传播影响和各种故障情况。仿真结果表明，所提出的系统在稳态和动态故障条件下都能实现良好的频率监控性能。

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