Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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直流控制系統(tǒng)對直流近區(qū)交流線路短路電流幅值的影響

來源:電工電氣發(fā)布時(shí)間:2016-08-18 14:18 瀏覽次數(shù):8
直流控制系統(tǒng)對直流近區(qū)交流線路短路電流幅值的影響
 
樊佳輝,都洪基
(南京理工大學(xué),江蘇 南京 210094)
 
    摘 要:在故障期間良好的直流控制系統(tǒng)可以減少故障對電網(wǎng)的傷害。介紹了目前主流的直流控制系統(tǒng)逆變側(cè)的結(jié)構(gòu)及其主要參數(shù),分析了控制系統(tǒng)的低壓限流、最大觸發(fā)角控制、電流放大器和換相失敗預(yù)測等環(huán)節(jié)的基本結(jié)構(gòu),通過PSCAD/EMTDC 軟件搭建仿真模型,在故障期間分別限制不同控制環(huán)節(jié)的信號輸出,研究其對短路電流幅值的影響,指出換相失敗預(yù)測環(huán)節(jié)是影響直流近區(qū)交流線路短路電流幅值的直接因素,最大觸發(fā)角控制和電流放大器環(huán)節(jié)間接影響短路電流幅值。
    關(guān)鍵詞:交直流混聯(lián)系統(tǒng);短路故障;短路電流;換相失??;直流控制系統(tǒng)
    中圖分類號:TM761;TM921.5  文獻(xiàn)標(biāo)識(shí)碼:A  文章編號:1007-3175(2016)08-0010-05
 
Impacts of Direct Current Control System onAlternating Current CircuitShort-Circuit CurrentAmplitude near Direct Current Region
 
FAN Jia-hui, DU Hong-ji
(Nanjing University of Science and Technology, Nanjing 210094, China)
 
    Abstract: During malfunction a good direct current control system could reduce harm to grid from faults. Introduction was made to the structure of the main stream direct current control system at the side of inverter side and its major parameter at present. Analysis was made to the basic structure of low-voltage current-limiting, maximum firing angle control, current amplifier and commutation defeating prediction etc links. The software PSCAD/EMTDC was used to construct the simulation model. During malfunction the signal outputs of different control links were limited. This paper studied its impact on the short-circuit current amplitude, and pointed out that the commutation defeating prediction link is the direct factor influencing on the alternating current circuit short-circuit current amplitude near direct current region and the maximum firing angle control and current amplifier links indirectly affect on the short-circuit current amplitude.
    Key words: alternating current and direct current parallel serial system; short-circuit fault; short-circuit current; commutation defeating; direct current control system
 
參考文獻(xiàn)
[1] 熊凌飛.HVDC 換流閥觸發(fā)控制模型研究[D]. 北京:華北電力大學(xué),2011.
[2] WANG Duanzhong, CHEN Jingcao, LI Xueming, et al. Research on The Fault Tripping Criteria of Stability Control Device Adapting to ACDC Hybrid Power Grid[C]//3rd International Conference on Mechanical Engineering and Intelligent Systems, 2015:222-230.
[3] 張保會(huì),郭丹陽,王進(jìn),等. 風(fēng)電接入對繼電保護(hù)的影響( 五)——風(fēng)電分散式接入配電網(wǎng)對電流保護(hù)影響分析[J]. 電力自動(dòng)化設(shè)備,2013,33(5):1-6.
[4] 栗然,高起山,劉偉. 直驅(qū)永磁同步風(fēng)電機(jī)組的三相短路故障特性[J]. 電網(wǎng)技術(shù),2011,35(10):153-158.
[5] 蘇黎. 高壓直流輸電對交流系統(tǒng)暫態(tài)穩(wěn)定影響的研究[D]. 成都:西南交通大學(xué),2008.
[6] 胡艷梅,吳俊勇,李芳,等.±800 k V 哈鄭特高壓直流控制方式對河南電網(wǎng)電壓穩(wěn)定性影響研究[J]. 電力系統(tǒng)保護(hù)與控制,2013,41(21):147-153.
[7] 張鵬. 交直流系統(tǒng)次同步振蕩建模與機(jī)理分析[D]. 北京:華北電力大學(xué),2014.
[8] 徐文,劉鵬,張祎,等. 預(yù)測型定Y 角換相失敗控制原理的直流工程應(yīng)用[C]// 第十一屆全國保護(hù)和控制學(xué)術(shù)研討會(huì),2007:269-271.