發(fā)電機組涉網(wǎng)保護及相關(guān)問題研究
[Abstract]:With the extensive application of power electronic devices and the operation of high-voltage direct current transmission with large capacity, the characteristics of "electric electrification" and "strong direct-to-weak AC" in China's power grid are becoming more and more obvious. On the one hand, the new characteristics of power grid directly affect the operation of generating units. On the other hand, the capacity of generating set increases year by year, and its running condition directly affects the safety of power grid. In this new situation, it is of great significance to strengthen the coordination between generating units and power grids, and the protection of generating units is one of the key factors that affect the coordination of generator networks. Therefore, it is necessary to study the network protection of generator sets. Firstly, the principle of coordination between the lost magnetic protection and the excitations of adjacent units is given through the study of the characteristics of the multi-machine system. Secondly, the effect of unified power flow controller (Unified Power Flow Controller,UPFC) on the protection of generator loss of excitation is studied in this paper. Based on this, the effects of adjustable cameras and shunt capacitors on the protection of loss of excitation are analyzed respectively. In addition, the influence of the location of the camera connected to the power network on the lost magnetic protection and the influence of the capacitance of the capacitor on the loss of magnetic protection are also studied in this paper. Finally, this paper studies the influence of single phase reclosing time extension on generator protection, and takes a practical pumped storage power plant in East China Power Grid as an example to check the generator protection. In addition, based on the equivalent model of three-area AC / DC system, this paper theoretically analyzes the mechanism of the single phase permanent fault of AC transmission line in the receiving end network, and the mechanism that the short reclosing time of the single phase leads to the instability of the terminal network.
【學位授予單位】:華北電力大學(北京)
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM31
【參考文獻】
相關(guān)期刊論文 前10條
1 邵瑤;湯涌;易俊;王安斯;;土耳其“3·31”大停電事故分析及啟示[J];電力系統(tǒng)自動化;2016年23期
2 李明節(jié);;大規(guī)模特高壓交直流混聯(lián)電網(wǎng)特性分析與運行控制[J];電網(wǎng)技術(shù);2016年04期
3 張健;屠競哲;印永華;劉明松;林偉芳;王琦;羅煦之;馬士聰;徐式蘊;;直流送受端故障對送端系統(tǒng)穩(wěn)定性影響的對比分析及控制措施[J];電網(wǎng)技術(shù);2016年04期
4 鞠平;沈賦;陳謙;;新背景下電力系統(tǒng)的建模思路[J];南方電網(wǎng)技術(shù);2016年03期
5 屠競哲;張健;王建明;何劍;林偉芳;易俊;卜廣全;印永華;;大規(guī)模直流異步互聯(lián)系統(tǒng)受端故障引發(fā)送端穩(wěn)定破壞的機理分析[J];中國電機工程學報;2015年21期
6 屠競哲;張健;吳萍;劉明松;卜廣全;印永華;;多送出直流系統(tǒng)送端故障引發(fā)穩(wěn)定破壞機理分析[J];電力系統(tǒng)自動化;2015年20期
7 肖湘寧;;新一代電網(wǎng)中多源多變換復(fù)雜交直流系統(tǒng)的基礎(chǔ)問題[J];電工技術(shù)學報;2015年15期
8 劉振亞;張啟平;王雅婷;董存;周勤勇;;提高西北新甘青750kV送端電網(wǎng)安全穩(wěn)定水平的無功補償措施研究[J];中國電機工程學報;2015年05期
9 鹿偉;王增平;鄭濤;俞雋亞;;基于振蕩邊界圓的失磁保護新判據(jù)研究[J];電力系統(tǒng)保護與控制;2015年03期
10 劉桂林;宋瑋;宋新立;;基于涉網(wǎng)保護的低勵限制、失磁保護與失步保護配合的研究[J];電力系統(tǒng)保護與控制;2014年23期
相關(guān)博士學位論文 前1條
1 李淼;電力系統(tǒng)機網(wǎng)協(xié)調(diào)優(yōu)化若干問題研究[D];武漢大學;2012年
相關(guān)碩士學位論文 前4條
1 楊尚瑾;統(tǒng)一潮流控制器(UPFC)多目標協(xié)調(diào)控制及穩(wěn)定控制策略研究[D];中國電力科學研究院;2013年
2 宋潔瑩;統(tǒng)一潮流控制器主電路拓撲研究與功率特性分析[D];華北電力大學;2012年
3 吳娜;高壓直流輸電系統(tǒng)分析與控制初探[D];昆明理工大學;2005年
4 管秀鵬;南方電網(wǎng)暫態(tài)電壓穩(wěn)定分析研究[D];清華大學;2004年
,本文編號:2307701
本文鏈接:http://sikaile.net/kejilunwen/dianlidianqilunwen/2307701.html