摘要由于谐振接地系统能够有效的屏蔽通讯的干扰，近年来随着谐振接地方式在配电网中的运用越来越多。由于电网在不断的发展，电网的对地电导和电容也增加，这样将会导致对地电容电流的增加，采用谐振接地方式能够减小对地电容电流对系统的危害。一般所说的谐振接地系统也就是经消弧线圈接地系统。在单相短路时由于消弧线圈所产生的电感电流的作用能够有效的抑制短路接地时的电容电流，从而起到了对线路的保护作用，为工作人员检查故障线路提供了充足的时间。本文题为对谐振接地系统的单相短路的MATLAB分析。现阶段对于谐振接地系统的研究有很多的方面，主要包括各种短路的研究和故障选线等。
本文主要运用了MATLAB中的Simulink对35kV配电网进行了建模仿真，利用MATLAB中的电力系统工具箱中的元件模型对线路、变压器、消弧线圈等都进行了建模。搭建了一个有三条出线的简单配电网模型，并对其在A相电压不同角度情况下进行了单相短路故障仿真。19301
关键词 谐振接地 消弧线圈 单相短路 MATLAB/Simulink
毕业论文设计说明书（论文）外文摘要
Title Resonant grounding system single-phase _________
______Faults MATLAB analysis____________
Abstract
Because the resonance earthed system can shield interference to communication effectively, the resonant earthed mode is increasingly used in distribution network in recent years. However the continuous development of the grid causes the increasing amount of conductance and capacitance, which leads to the increase of earth capacitance current. Using the resonant earthed mode can reduce the harm of the capacitance current to the system. The resonant earth mode actually is using Petersen coil earth system. Since the inductor current generated by the arc suppression coil under single-phase short-circuit can prohibit the capacitive current of earthed short circuit effectively, which provides protection for lines, this mode offers sufficient time for staff to check the fault line. This paper analyses single-phase short circuit current in resonant earthed system through MATLAB. Nowadays, the studies of resonance earthed system are in many aspects, including the studies of various sorts of short circuit and the selection of fault lines.
This paper uses MATLAB Simulink to model and simulate 35kV distribution network and models the line，the transformer，the arc suppression coil by using power system toolbox in MATLAB. Besides that ,this paper also builds a simple model of distribution network which has three outgoing lines and then stimulates the single-phase short circuit fault under different A phase voltage angles.
Keywords Resonant grounding Petersen coil Single-phase short circuit
MATLAB/Simulink
目 次
1 绪论 1
1.1课题背景 1
1.2 研究现状 3
1.3本文主要研究的问题 4
1.4本章小结 5
2 谐振接地系统的分析 6
2.1谐振接地系统分析 6
2.2本章小结 7
3 基于MATLAB的电力系统模型的建立 8
3.1输电线路模型的建立 8
3.2 Z型变压器模型的建立 8
3.3接地点模型的建立 8
3.4消弧线圈模型的建立 9
3.5本章小结 10
4谐振接地系统MATLAB仿真 11
4.1系统仿真分析 11
4.2本章小结 24
5 现阶段故障选线 25
5.1 现阶段故障选线 25 谐振接地系统单相故障的MATLAB分析:http://www.751com.cn/zidonghua/lunwen_10599.html