基于PMU的电网故障诊断系统的研究与开发

发布时间：2018-03-10 23:16

本文选题：广域监测系统　切入点：同步相量测量单元　出处：《华北电力大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：在规模越来越大、区域间联网越来越紧密的电网发展背景下,电力系统发生各类故障时所造成的危害越来越严重,这就对电网故障诊断系统的实时性、准确性和可靠性提出了更为严格的要求。为规避掉传统的基于SCADA和故障信息系统的电网故障诊断系统中存在的开关、保护的拒动、误动问题,以及信道干扰等影响因素,本文研发了一个基于广域监测系统(WAMS)中的同步相量测量单元(PMU)的实测数据的电网故障诊断系统。本文完成了以下工作:从PMU数据的特点出发,根据故障前后电气量信息的变化特征,研究确定了由PMU数据进行故障启动、故障定位、故障类型分析的方法,从而实现了仅仅基于PMU数据得到包括故障发生时间、故障元件、故障类型及故障相的诊断结果的目标;利用Visual C++6.0软件,以所提诊断方法为原理研发了一个基于PMU数据的电网故障诊断系统,该诊断系统由故障启动、故障定位、故障类型分析三个模块组成,程序设计逻辑清晰、过程完整,并以IEEE标准三机9节点系统为例,对该系统进行电网故障诊断分析的过程进行了仿真模拟。以某实际电网发生的某次故障为例,对本文所研发的基于PMU数据的电网故障诊断系统进行测试。测试结果验证了此系统电网故障诊断功能的正确性。
[Abstract]:In the background of the development of power network with larger scale and closer inter-regional network, the harm caused by various kinds of faults in power system is becoming more and more serious, which is the real-time performance of fault diagnosis system of power network. More strict requirements for accuracy and reliability are put forward. In order to avoid the influence factors such as switch, protection failure, maloperation, channel interference and so on, the traditional fault diagnosis system based on SCADA and fault information system is avoided. In this paper, a power network fault diagnosis system based on the measured data of synchronous phasor measurement unit (PMU) in wide area monitoring system (WAMS) is developed. The following works are accomplished: starting from the characteristics of PMU data, According to the change characteristics of electrical information before and after fault, the method of fault initiation, fault location and fault type analysis based on PMU data is studied, and the fault components are obtained only based on PMU data. A fault diagnosis system based on PMU data is developed by using Visual C 6.0 software, which is based on PMU data. The fault type analysis consists of three modules, the program design logic is clear, the process is complete, and the IEEE standard three-machine 9-bus system is taken as an example. The process of fault diagnosis and analysis of this system is simulated. The power network fault diagnosis system based on PMU data is tested in this paper, and the test results verify the correctness of the system.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM711

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