基于PMU信息的电网故障定位研究

发布时间：2018-04-14 00:11

本文选题：PMU + 故障定位　；参考：《中国矿业大学》2014年硕士论文

【摘要】：在电网发生故障时，对故障的快速识别和准确定位对于确保电力系统的暂态稳定性有着至关重要的意义，对于电网的故障定位方法研究一直是国内外的热点和难点，，是一项具有重大技术、经济意义的课题。当前我国大力建造智能电网的背景下，WAMS系统的广泛应用给电力系统故障定位开辟了一条新的道路。本文首先对电力系统内PMU的配置方案进行了深入的分析和探讨，从全网节点的可观性出发对PMU的布点进行设置，并选取相关算法对设置方案进行优化。然后，通过遍历算法对故障区段进行确定，并针对开关断路器及保护的动作情况构造了故障识别的数学函数模型及相关约束条件。最后，提出一种基于PMU量测数据的故障定位同步算法，并引入行波法进行故障定位的优势，提出一种新型的混合信息定位算法，充分整合冗余信息，利用不同权值对多数据源的定位结果进行修正，并通过PSCAD/EMTDC进行仿真验证。
[Abstract]:When fault occurs in power network, fast fault identification and accurate location are very important to ensure the transient stability of power system, and the research of fault location method has always been a hot and difficult point at home and abroad.It is a subject of great technical and economic significance.At present, the wide application of WAMS system opens a new way for power system fault location under the background of smart grid construction in China.In this paper, the configuration scheme of PMU in power system is analyzed and discussed deeply, and the layout of PMU is set from the observability of the whole network node, and the relevant algorithms are selected to optimize the scheme.Then, the fault section is determined by traversal algorithm, and the mathematical function model of fault identification and related constraint conditions are constructed for the operation of switch circuit breaker and protection.Finally, a fault location synchronization algorithm based on PMU measurement data is proposed, and the advantages of traveling wave method for fault location are introduced. A new hybrid information location algorithm is proposed to fully integrate redundant information.The localization results of multiple data sources are modified by using different weights, and the simulation results are verified by PSCAD/EMTDC.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM73

【参考文献】