A Novel Criterion for Online Prediction of Voltage Collapse

F. Xue, Z. Chen, H.F. Wang
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引用次数: 1

Abstract

The trend towards decentralised operation in power systems is getting stronger, pushed by the factors such as market forces and increasing requirement for the use of renewable energy. In this paper, a new criterion for online predicting of transient voltage collapse in power systems is described. This criterion uses the changing ratio of difference between the reactive power generators and reactive power absorbers to predict voltage collapse. The performance of this criterion is studied and tested for a variety of operating conditions in a modified 4-machine power system that connects with infinite bus. The simulation results indicate that the proposed criterion can predict its proximity to voltage collapse by only using the information that can be gained online. This criterion is computationally efficient and suitable for real time prediction of voltage collapse
一种新的电压崩溃在线预测准则
在市场力量和对使用可再生能源的需求增加等因素的推动下,电力系统分散化运行的趋势越来越强。本文提出了一种新的电力系统暂态电压崩溃在线预测准则。该准则利用无功发电机与无功吸收器之间的差值变化率来预测电压崩溃。在与无限母线连接的改进型四机电力系统中,对该判据在各种工况下的性能进行了研究和测试。仿真结果表明,所提出的判据仅利用在线获取的信息就能预测其是否接近电压崩溃。该准则计算效率高,适合于电压崩溃的实时预测
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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