Implementation of Power System Stabilizers in a Power Grid: A Case Study

2019 IEEE Canadian Conference of Electrical and Computer Engineering (CCECE) Pub Date : 2019-05-05 DOI:10.1109/CCECE.2019.8861775

M. Carter, Xiaodong Liang

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Abstract

Power utilities constantly seek cost effective ways to improve stability and reliability of power grids. A key responsibility of transmission planning engineers is to ensure a power system remains stable under normal and disturbance conditions. The implementation of power system stabilizers (PSSs) on excitation control of large synchronous generators is a more contemporary approach to defending the system against disturbances. This paper demonstrates the value of power system stabilizers through a case study by analyzing a real-life event that occurred on a 230 kV transmission system that resulted in the loss of power to numerous customers in a power grid in Canada. This disturbance occurred on May 22, 2018 in which the loss of a 230 kV line caused power oscillations on a nearby 13S kV line that eventually tripped and resulted in a significant drop in the system frequency. The dynamic stability analysis for the case study is performed using PSSOE. It is found that power system stabilizers can significantly reduce power oscillations on the 138 kV system and avoid customer outages.

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电网中电力系统稳定器的实现:一个案例研究

电力公司不断寻求经济有效的方法来提高电网的稳定性和可靠性。输电规划工程师的一项重要职责是确保电力系统在正常和扰动条件下保持稳定。在大型同步发电机励磁控制中引入电力系统稳定器(pss)是一种较为现代的保护系统不受干扰的方法。本文通过一个案例研究来说明电力系统稳定器的价值，该案例分析了发生在加拿大230千伏输电系统上的一个实际事件，该事件导致了电网中众多客户的电力损失。该扰动发生在2018年5月22日，其中230千伏线路的损耗导致附近13S千伏线路的功率振荡，最终跳闸并导致系统频率显著下降。案例研究的动态稳定性分析使用PSSOE进行。研究发现，电力系统稳定器可以显著降低138 kV系统的功率振荡，避免用户停电。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 IEEE Canadian Conference of Electrical and Computer Engineering (CCECE)

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