基于MATLABSPS電力系統(tǒng)暫態(tài)穩(wěn)定仿真分析

論文編號:DQ258   論文字?jǐn)?shù):11644,頁數(shù):29

摘  要
      隨著電力工業(yè)的迅速發(fā)展，電力系統(tǒng)的規(guī)模日益龐大和復(fù)雜，出現(xiàn)的各種故障，會給發(fā)電廠以及用戶和電廠內(nèi)的多種動力設(shè)備的安全帶來威脅，并有可能導(dǎo)致電力系統(tǒng)事故的擴(kuò)大，從技術(shù)和安全上考慮直接進(jìn)行電力試驗(yàn)可能性很小，迫切要求運(yùn)用電力仿真來解決這些問題依據(jù)電網(wǎng)用電供電系統(tǒng)電路模型要求，因此，論文利用MATLAB的動態(tài)仿真軟件Simulink搭建了單機(jī)—無窮大電力系統(tǒng)的仿真模型，能夠滿足電網(wǎng)在其可能遇到的多種故障方面運(yùn)行的需要。
      論文以MATLAB R2009a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，實(shí)驗(yàn)得到了在該系統(tǒng)發(fā)生各種短路接地故障并由斷路器自動跳閘隔離故障的仿真結(jié)果。并利用小波分析具有很強(qiáng)的信號特征提取能力，尤其對暫態(tài)突變信號或微弱變化信號的處理變現(xiàn)出明顯的優(yōu)勢，達(dá)到了仿真的目的。
      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
     （3）基于Haar小波的故障檢測與分析
      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。

關(guān)鍵詞  單機(jī)—無窮大；SimPowerSyetem；短路故障；小波變換  

ABSTRACT
     With the rapid development of electric power industry, electric power system, as an increasingly large scale and complicated power system fault, The user will give power plants and power equipment of the security threats, and may have caused the accident of power system, technology and safety considerations from directly power test possibility, urged using electric simulation to solve these problems based on grid power supply system, Therefore, paper depend on  the model of dynamic simulation by MATLAB build software Simulink infinite power system of single - simulation model,  the grid in various fault may meet the needs of the running of aspects.
    The paper base on platform version of Matlab R2009a，According to SimPowerSyetem toolbox to build power operation of common single—infinite system model, the experiment in the system was obtained by various circuit breaker automatically earthing faults and fault isolation of simulation results trip. Using the wavelet analysis and has strong ability of the signal feature extraction, especially for transient mutations signals or weak signal processing showed obvious advantages, Reaching purpose of the simulation.
 The main work is :
    (1) Building this simulation system of single - infinite under Simulink
    (2) Fault simulation test analysis of system
 (3) Fault detection and analysis based on Haar wavelet
 Through examples, if this method to the power system fault diagnosis, fast fault detection and diagnosis, automatic for improving the stability of power system has important significance.
 
 keywords： Single—infinite；SimPowerSyetem；Short circuit faults；Wavelet transform
                    目  錄
目  錄 2
摘  要 3
ABSTRACT 4
第1章 緒  論 5
1.1  MATLAB及SimPowerSystem簡介 5
1.2  配電網(wǎng)的故障現(xiàn)狀及分析 5
1.3  暫態(tài)穩(wěn)定仿真流程 6
第2章 單機(jī)—無窮大暫態(tài)穩(wěn)定仿真分析 7
2.1  復(fù)雜電力系統(tǒng)暫態(tài)穩(wěn)定性分析 7
2.2  單機(jī)—無窮大系統(tǒng)原理 7
2.3  結(jié) 論 8
第3章Simulink下SimPowerSystem模型應(yīng)用 9
3.1  仿真系統(tǒng)模型步驟 9
3.2  仿真模型的搭建 10
3.2.1模型詳細(xì)參數(shù)設(shè)置 11
3.3  各種提高暫態(tài)穩(wěn)定性措施的運(yùn)行效果仿真 19
3.4  結(jié) 論 21
第4章 信號特征提取 22
4.1  小波變換的基本理論及應(yīng)用 22
4.2  小波函數(shù)的選擇 22
4.3  Haar小波變換原理 23
4.4  小波變換在仿真中的應(yīng)用 24
4.5  結(jié) 論 26
結(jié) 論和展 望 27
附 錄 28
參考文獻(xiàn) 29