• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Reachability and model prediction based system protection schemes for power systems.
【24h】

Reachability and model prediction based system protection schemes for power systems.

机译：电力系统基于可达性和模型预测的系统保护方案。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Interconnected power systems have been disrupted by unforeseen disturbances from time to time when millions of consumers lose power supply at a very expensive cost. System protection and emergency control to counteract power system instability play an important role in power system operation. Motivated by the industry need to mitigate the effect of disturbances on system operation and improve power system security, this dissertation develops a general framework for system protection scheme based on reachability analysis and Model Predictive Control.;A systematic framework to determine switching control strategies is proposed to stabilize the system following a disturbance based on reachability analysis. The computation of the stability region of a stable equilibrium point with the purpose of power system stability analysis is proposed and the validity of discrete controls in transient stability design is studied.;Model Predictive Control (MPC) is also adopted to design system protection scheme. A control strategy for maintaining voltage stability following the occurrence of a contingency is presented. Based on economic consideration and control effectiveness, a control switching strategy consisting of a sequence and amounts of shunt capacitors to switch is identified for voltage restoration. The effect of the capacitive control on voltage recovery is measured via trajectory sensitivity. In addition, voltage stability margin is an indication of how far the post-transient operating point is from the voltage collapse point. It is an index of system security. A control scheme to restore voltage following a contingency and to maintain a pre-specified amount of post-transient voltage stability margin is proposed. Moreover, dissimilar controls exist in power system for voltage control. A mixed integer programming based algorithm is presented to study the optimal coordination of the dissimilar controls to improve voltage performance following large disturbances. The developed algorithms are implemented with MATLAB and tested on the WECC system to enhance the performance of voltage and the 39 bus New England system for preventing voltage collapse.
机译：数以百万计的用户以非常昂贵的成本失去电源时，不时发生的不可预见的干扰已破坏了互连的电源系统。系统保护和应急控制以抵消电力系统的不稳定性，在电力系统的运行中起着重要的作用。由于行业需要减轻干扰对系统运行的影响并提高电力系统的安全性，本文基于可及性分析和模型预测控制建立了系统保护方案的通用框架。根据可达性分析，在发生干扰后稳定系统。提出了以电力系统稳定性分析为目的的稳定平衡点稳定区域的计算方法，研究了离散控制在暂态稳定设计中的有效性。；还采用模型预测控制（MPC）设计了系统保护方案。提出了一种在意外事件发生后保持电压稳定性的控制策略。基于经济考虑和控制有效性，确定了由切换的顺序和数量的并联电容器组成的控制切换策略，以进行电压恢复。电容控制对电压恢复的影响通过轨迹灵敏度进行测量。另外，电压稳定性裕度指示瞬态后工作点距电压崩溃点有多远。它是系统安全性的指标。提出了一种控制方案，以在发生意外情况后恢复电压并保持预定的瞬态电压稳定后裕量。此外，电力系统中存在用于电压控制的不同控制。提出了一种基于混合整数规划的算法，以研究不同控制的最佳协调，以改善大干扰后的电压性能。所开发的算法是用MATLAB实现的，并在WECC系统上进行了测试以增强电压性能，并在39总线New England系统上进行了测试以防止电压崩溃。

著录项

  • 作者

    Jin, Licheng.;

  • 作者单位

    Iowa State University.;

  • 授予单位 Iowa State University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 152 p.
  • 总页数 152
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:38:28

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