【作者】 周红军；

【导师】 卫志农；

【作者基本信息】 河海大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 本文首先研究了高压输电网故障信息的特点，提出了基于故障录波器故障录波信息联网组成的电网故障分析与诊断系统的方案。方案由调度中心站和分站组成，分站采集到录波器以及微机保护的信息后，直接上传到中心站，由调度中心站进行统一处理，在基于中心站方案的基础上，提出了智能多Agent原理的高压输电系统分析与诊断体系。 本文其次对现有高压输电线路故障定位方法进行了综合评述，在此基础上提出了三种基于双端数据的工频故障测距算法。全文主要工作如下：(1)利用全球定位系统GPS的授时功能，提出了基于GPS同步采样的双端故障测距算法；(2)由于增加GPS硬件设施，造价比较高，且客观上双端数据存在着不同步相差，双端故障测距法所面临的主要问题是两端数据采样的同步问题，针对这一问题，本文又提出了两种不需要两端数据采样同步的工频故障测距新方法，基于Powell方向加速法和基于遗传算法的故障定位算法。大量仿真结果表明：本文提出的三种方法计算较为简单，稳定性好，具有很高的精度，完全不受故障类型、过渡电阻和系统参数的影响，且有效避免了伪根问题。更多还原

【Abstract】 In this thesis, the feature of fault information on HV transmission network has been firstly studied. A method of analysis and diagnosis on the network fault which based on fault recorder information associated with the network is proposed. This method is made up of the central dispatch station and the separated dispatch station. The information of fault recorder and microprocessor-based protection is collected which directly brought up to the central dispatch station, the central dispatch station deals with the information together. By the conclusion of central station method, a system of analysis and diagnosis on the HV transmission network which based on the theory of multitude intelligence agent is proposed.Secondly the present fault location on HV transmission network has been commented on . Tree fault location methods based on the power frequency fault data of two-terminal are proposed. The main tasks of this thesis are as follows: (1) A two-terminal fault location arithmetic based on the synchronization sampling of GPS has been brought up. (2) Because of the cost of GPS and the truth that there is phase difference of two-terminal, the two-terminal fault location arithmetic is faced up with facts that how to keep the sampling data of two-terminal synchronous. According to that, two new methods are proposed, which don’t need the synchronized sampling data of two-terminal. One is based on Powell direction acceleration theory. The other is based on genetic arithmetic. Simulation results show that the results could be got easily, stably accurately by three methods, which is totally not affected by the type of fault, transition resistance, system parameters and avoiding the fake root problem.更多还原