首页> 外文会议>NASCODE V >Power system voltage stability margin identification using local measurements
【24h】

Power system voltage stability margin identification using local measurements

机译:电力系统电压稳定性裕量的局部测量识别

获取原文
获取原文并翻译 | 示例

摘要

Voltage stability margin is essential to be known in advance to avoid voltage collapse and system blackout. This paper presents a new technique for determining the voltage stability margin, so that a corrective decision is taken in the proper time. The proposed algorithm is based on recursive least error square to measure the Thevenin's impedance at the bus in question as the busload changes. The proposed technique utilizes the past measurements together with the recent local measurements, bus voltage and load current, to predict Thevenin's impedance. The voltage instability occurs at a point where the load impedance equals Thevenin's impedance. Prior to this point the voltage margin can be predicted using the proposed technique. The method is tested on the IEEE 30 bus system for a single bus-load change, short-term voltage stability, and when the buses loads change with the same rate, long-term voltage stability study. Unlike the other techniques the proposed algorithm has the ability to estimate digitally the Thevenin's impedance at the load bus in question.
机译:电压稳定裕度对于避免电压崩溃和系统停电至关重要。本文提出了一种确定电压稳定裕度的新技术,以便在适当的时间做出正确的决定。所提出的算法基于递归最小误差平方,以在总线负载变化时测量所讨论的总线处的戴维南阻抗。所提出的技术利用过去的测量值以及最近的局部测量值,总线电压和负载电流来预测戴维南的阻抗。电压不稳定性发生在负载阻抗等于戴维南阻抗的点。在此之前,可以使用提出的技术来预测电压裕度。该方法在IEEE 30总线系统上进行了测试,以了解单个总线负载变化,短期电压稳定性,以及当总线负载以相同速率变化时进行长期电压稳定性研究的情况。与其他技术不同,所提出的算法具有以数字方式估算所讨论的负载总线处戴维南阻抗的能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号