继电保护故障诊断系统的设计与实现

发布时间：2019-03-06 08:06

【摘要】：目前,电力系统正在成为综合国力的重要标志。但是,由于电力系统越来越复杂和运行人员操作失误、人为破坏和自然不可抗拒力的因素,大规模停电事故时有发生。当电力系统发生故障后,如何迅速的、精确的确定故障点,以便快速地修复故障、恢复供电是继电保护故障诊断研究课题的重点。电力系统的故障诊断关键问题在于如何快速、准确的识别故障元件。鉴于现代电力系统的庞大、故障信息复杂和多样。本文在国内外相关研究成果的基础上,依据电力系统中继电保护开关的变位和继电保护动作的信息,提出了基于支持向量机的继电保护故障诊断模型。根据支持向量机算法原理,通过对多种参数优化算法的学习与研究,提出了基于粒子群优化算法的支持向量机故障诊断模型。在详细总结了母线、输电线路、变压器的继电保护动作原理后,应用继电保护故障诊断模型对数据资源进行挖掘分析,运用当今主流框架,设计并实现了继电保护故障诊断系统。该系统可以准确、快速的对电网故障进行诊断。系统展示内容丰富,分析结果直观易懂。该系统可以是继电保护装置更加准确、合理的诊断电网故障,能更好的反应电网运行的情况,从而为电网运行人员的决策提供支持。通过对以往电网故障的实验表明,该系统具有良好的实用性和高效性。
[Abstract]:At present, power system is becoming an important symbol of comprehensive national strength. However, large-scale power outages often occur due to the increasing complexity of the power system and the operation errors of operators, man-made damage and natural irresistible force. When the power system fails, how to quickly and accurately determine the fault point in order to quickly repair the fault and restore the power supply is the focus of relay protection fault diagnosis research. The key problem of power system fault diagnosis is how to identify fault components quickly and accurately. In view of the large scale of modern power system, the fault information is complex and diverse. On the basis of relevant research results at home and abroad, this paper presents a fault diagnosis model of relay protection based on support vector machine (SVM), according to the information of the shift of relay protection switch and the action of relay protection in power system. According to the principle of support vector machine (SVM) algorithm, a support vector machine (SVM) fault diagnosis model based on particle swarm optimization (PSO) is proposed through the study and research of multi-parameter optimization algorithms. After summarizing the principle of relay protection operation of busbar, transmission line and transformer in detail, the fault diagnosis model of relay protection is used to mine and analyze the data resources, and the mainstream frame is used today. The fault diagnosis system of relay protection is designed and implemented. The system can diagnose the fault of power network accurately and quickly. The system display content is rich, the analysis result is intuitive and easy to understand. The system can be a more accurate and reasonable fault diagnosis system for relay protection devices, and can better reflect the operation of the power grid, thus providing support for the decision-making of the power network operators. The experiments on the previous power network faults show that the system has good practicability and high efficiency.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM77

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