【正文】 reasingly large and plex, all kinds of fault, to power plants and power plants and users in a variety of power equipment safety threat, and is likely to lead to the expansion of power system accident, from the technical and safety considering direct electricity experiment was carried out on the possibility is very small, urge electric power simulation are used to solve these problems, according to the power supply system of power grid power circuit model, as a result, paper use MATLAB dynamic simulation software Simulink has set up a simulation model for the single infinite power system, can satisfy the needs of the running of a fault may encounter a variety of ways. Paper R2020b with MATLAB toolbox power system as a platform, through SimPowerSyetem set up power system in the operation of the mon single infinity system model, design the various kinds of shortcircuit ground fault occurs in the system and simulation results of fault removed. The main work is: (1) Building this simulation system of single infinite under Simulink (2) Fault simulation test analysis of system Through examples, if these methods to the power system fault diagnosis, fast fault detection and diagnosis, automatic for improving the stability of power system has important significance. Key words Single—infinite。 本文做的主要工作有： （ 1） Simulink 下單機(jī) —無窮大仿真系統(tǒng)的搭建 （ 2）系統(tǒng)故障仿真測試分析 通過實(shí)例說明，若將該方法應(yīng)用到電力系統(tǒng)短路故障的診斷中，快速實(shí)現(xiàn)故障的自動診斷、檢測，對于提高電力系統(tǒng)的穩(wěn)定性具有十分重要的意義。 本課題的基本內(nèi)容簡介 ： 論文以 MATLAB R2020b 電力系統(tǒng)工具箱為平臺，通過 SimPowerSyetem 搭建了電力系統(tǒng)運(yùn)行中常見的單機(jī) —無窮大系統(tǒng)模型，設(shè)計得到了在該系統(tǒng)發(fā)生 各種短路接地故障并故障切除的仿真結(jié)果。 本文做的主要工作有： （ 1） Simulink 下單機(jī) —無窮大仿真系統(tǒng)的搭建 （ 2）系統(tǒng)故障仿真測試分析 通過實(shí)例說明，若將該方法應(yīng)用到電力系統(tǒng)短路故障的診斷中，快速實(shí)現(xiàn)故障的自動診斷、檢測，對于提高電力系統(tǒng)的穩(wěn)定性具有十分重要的意義。 Wavelet transform 畢 業(yè) 論 文 （設(shè) 計） 用 紙 佳木斯大學(xué)繼續(xù)教育學(xué)院 第 9頁 目 錄 摘 要 ................................................................................................................................... 1 ABSTRACT ......................................................................................................................... 8 第 1 章 電力系統(tǒng)穩(wěn)定性概述 ....................................................................................... 10 電力系統(tǒng)的靜態(tài)穩(wěn)定性 ....................................................................................... 10 電力系統(tǒng)的暫態(tài)穩(wěn)定性 ....................................................................................... 10 第 2 章 基于 MATLAB 的電力系統(tǒng)仿真 .................................................................... 12 電力系統(tǒng)穩(wěn)定運(yùn)行的控制 ................................................................................... 12 MATLAB 及 SIMPOWERSYSTEM 簡介 ................................................................. 12 配電網(wǎng)的故障現(xiàn)狀及分析 ................................................................................... 13 暫態(tài)穩(wěn)定仿真流程 ............................................................................................... 14 第 3 章 單機(jī) — 無窮大暫態(tài)穩(wěn)定仿真分析 ................................................................... 15 電力 系統(tǒng)暫態(tài)穩(wěn)定性分析 ................................................................................... 15 引起電力系統(tǒng)大擾動的原因 ........................................................................ 15 定性分析 ........................................................................................................ 15 提高電力系統(tǒng)穩(wěn)定性的措施 ........................................................................ 17 單機(jī) —無窮大系統(tǒng)原理 ....................................................................................... 18 第 4 章 SIMULINK 下 SIMPOWERSYSTEM 模型應(yīng)用 ......................................... 21 仿真 模型的搭建 ................................................................................................... 21 運(yùn)行效果仿真圖 ................................................................................................... 22 改變故障模塊中的短路類型 ........................................................................ 22 改變系統(tǒng)中的元件參數(shù) (改 變線路的電阻 ).................................................. 25 加入電容補(bǔ)償器后的的仿真圖 ........................................................................... 27 小結(jié) ....................................................................................................................... 30 結(jié) 論 ................................................................................................................................. 32 致 謝 ................................................................................................................................. 33 參考文獻(xiàn) .......................................................................................................