文档介绍：毕业论文
配电线路故障暂态行波仿真
摘要
配电线路直接面向用户供电,其运行的可靠性决定了供电的质量和水平。配电线路因点多、面广、线长,走径复杂,设备质量参差不齐,受气候的、地理的环境影响较大,又直接面对用户端,供用电情况复杂,这些都直接或间接影响着配电线路的安全运行,造成设备故障率居高不下,故障原因也远比输电线路复杂。这对配电线路故障原因的分析,指出故障对变电设备和配电网的危害,提出预防和故障处理办法,并建议应用新技术新设备,减少故障的发生,确保配电网安全、经济和稳定运行有重要意义。
该设计采用5回路10kv的电路,通过ATPDraw建立模型进行仿真,并通过matlab对波形进行分析。本文的主要内容有:
(1)了解行波的基本理论,为后面的工作做好理论基础。
(2)搭建不同中性点接地方式(包括不接地、经电阻接地和经过消弧线圈接地)的配电网络仿真模型。
(3)根据建立的配电网络并综合考虑不同接地过渡电阻、不同故障距离、不同接地方式等多个因素,对配电网系统的各种故障(单相接地、两相短路、两相接地短路、三相接地短路)进行了大量仿真。
(4)根据仿真波形分析故障的行波波形。
关键词:配电线路,故障,ATPDraw仿真
Abstract
  Power distribution line directly to the user, determine the reliability of its quality and level of power. Distribution line for points, wide, line length, walking plex, uneven quality of equipment, by climate and geography influenced the environment, but also directly to the client for the electricity situation plex, which directly or indirectly affect the safe operation of distribution lines, resulting in equipment failure rate is high, fault reasons than the transmission plex. This power distribution line fault analysis of the causes, that failure of substation equipment and works hazards approach to the prevention and failures, and suggested the application of new technology and new equipment to reduce the incidence of single-phase ground fault to ensure the safety of work, economic and stable operation are important.
The model is a 5 circuit 10kv circuit simulation by ATPDraw modeling and analysis of the waveform by matlab. The main contents are:
(1) understand the basic theory of traveling waves for a good job behind the theoretical basis. (2) Neutral Grounding in different structures (including non-grounded, the resistance through the arc suppression coil grounding and ground) of the work simulation model. (3) According to the established work and considering the transition resistance of different ground, different fault distance, a number of factors such as different grounding of all power distribution system fault (single phase,