• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Investigation of novel methodologies using reactive power reserves for online voltage stability margin monitoring and control
【2h】

Investigation of novel methodologies using reactive power reserves for online voltage stability margin monitoring and control

机译：研究使用无功功率储备进行在线电压稳定裕度监控的新方法

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As the amount of uncertainty in online power system operations grows, new methodologies need to be devised in order to timely monitor and control the power grid. In this work, novel techniques for online voltage stability margin monitoring and control have been developed with a focus on reactive power reserves.The maintenance of adequate reactive power reserves (RPRs) is a critical step in avoiding a voltage collapse. A thorough investigation of the relationship between different definitions of reactive power reserves and how they are related to voltage stability margin (VSM) is performed.Multi-linear regression models are used to relate RPRs and VSM. Several operating conditions and a significantly large number of different network topologies, including NERC category B, C and D outages are considered as well. A classification tool is then developed in order to identify which regression model needs to be used based on system conditions and network topology. The approach is tested in the IEEE 30 bus test system and in a reduced case of the eastern power system interconnection of the United States. Results have shown that the approach can monitor voltage stability margin in real time based on the amount of system wide reactive power reserves.In case degenerative system conditions are identified, control actions need to be put in place to increase the amount of RPRs and system VSM. A novel control method is proposed here in order to identify the location and amount of control necessary to recover RPRs, VSM and to remove existing voltage violations. The approach is based on the identification of a critical set of generators that, if exhausted, will directly contribute to a voltage collapse.Potential control actions are investigated in order to recover those critical reactive power reserves, namely: active power re-dispatch, capacitor switching, active and reactive power load shedding. The effectiveness of each control variables on RPRs is calculated using reactive power reserve sensitivities, a concept introduced in this work. Once these sensitivities are calculated, the problem of recovering RPRs and VSM is formulated as convex quadratic optimization problem with a reduced dimension.Results on the IEEE 30 bus test system and the IEEE 118 bus test system are used to illustrate the efficacy of the approach.
机译：随着在线电力系统运行中不确定性的增加，需要设计新的方法来及时监视和控制电网。在这项工作中，针对无功功率储备的在线电压稳定裕度监测和控制的新技术已经被开发出来。保持足够的无功功率储备（RPR）是避免电压崩溃的关键步骤。对无功储备的不同定义之间的关系以及它们与电压稳定裕度（VSM）的关系进行了彻底的研究。使用多线性回归模型将RPR和VSM关联起来。还考虑了几种操作条件和大量不同的网络拓扑，包括NERC B，C和D类中断。然后开发分类工具，以便根据系统条件和网络拓扑确定需要使用哪种回归模型。该方法已在IEEE 30总线测试系统中进行了测试，并在美国东部电力系统互连的简化案例中进行了测试。结果表明，该方法可以基于系统范围内的无功储备量实时监视电压稳定裕度。如果识别出退化的系统状况，则需要采取控制措施以增加RPR和系统VSM的数量。这里提出一种新颖的控制方法，以便确定恢复RPR，VSM并消除现有电压违规所必需的控制位置和控制量。该方法基于识别一组关键的发电机，如果这些发电机耗尽，它们将直接导致电压崩溃。研究了电势控制措施，以恢复那些关键的无功功率储备，即：有功功率重新分配，电容器开关，有功和无功功率削减。使用无功储备灵敏度来计算RPR上每个控制变量的有效性，这是本文引入的一个概念。一旦计算出这些灵敏度，就将恢复RPR和VSM的问题表述为具有减小维数的凸二次优化问题。使用IEEE 30总线测试系统和IEEE 118总线测试系统的结果来说明该方法的有效性。

著录项

  • 作者

    Leonardi, Bruno H.;

  • 作者单位
  • 年度 2011
  • 总页数
  • 原文格式 PDF
  • 正文语种 en
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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