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

Article retrieval

文章檢索

首頁 >> 文章檢索 >> 往年索引

基于直流擾動功率的直流配電網(wǎng)電壓暫降源定位

來源:電工電氣發(fā)布時間:2020-06-18 15:18 瀏覽次數(shù):813
基于直流擾動功率的直流配電網(wǎng)電壓暫降源定位
 
魯濤1,呂干云1,賈德香2,王程2,徐曉東1
(1 南京工程學(xué)院 電力工程學(xué)院,江蘇 南京 211167;2 國網(wǎng)能源研究院有限公司,北京 102209)
 
    摘 要:電壓暫降源定位對解決相應(yīng)供用電雙方糾紛及責(zé)任認(rèn)定等起到重要作用。提出一種基于直流擾動功率法的直流配電網(wǎng)電壓暫降源定位方法,分析了導(dǎo)致直流配電網(wǎng)電壓暫降的典型原因,將故障狀態(tài)分解為正常狀態(tài)和擾動狀態(tài)的疊加,建立直流擾動功率與擾動源位置之間的對應(yīng)關(guān)系,根據(jù)直流擾動功率的正負(fù)來判斷暫降源的位置。在Simulink平臺上搭建了直流配電網(wǎng)暫降分析仿真模型,分別對直流配電網(wǎng)的外部交流電網(wǎng)故障與內(nèi)部故障引起的電壓暫降進(jìn)行源定位分析。仿真實驗結(jié)果表明,該方法可有效完成直流配電網(wǎng)電壓暫降源的定位,具有應(yīng)用范圍較廣、可靠性高的優(yōu)點。
    關(guān)鍵詞:直流配電網(wǎng);電壓暫降源定位;直流擾動功率
    中圖分類號:TM711     文獻(xiàn)標(biāo)識碼:A     文章編號:1007-3175(2020)06-0001-04
 
Voltage Sag Source Location of DC Distribution Network Based on DC Disturbance Power
 
LU Tao1, LYU Gan-yun1, JIA De-xiang2, WANG Cheng2, XU Xiao-dong1
(1 School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 2111 67, China;
2 State Grid Energy Research Institute Co., Ltd, Beijing 102209, China)
 
    Abstract: The location of voltage sag source plays an important role in solving the disputes and identifying responsibility between two power supply companies. In this paper, a method for locating source of voltage sag in DC distribution network based on DC disturbance power is provided; the typical causes of the voltage sag in the DC distribution network are analyzed, and the fault state is decomposed into the superposition of the normal state and the disturbance state, and establish the correspondence between the DC disturbance power and the location of the disturbance source, and determine the location of the sag source according to the positive and negative of the DC disturbance power. A DC distribution network sag analysis simulation model was built on Simulink to analyze the source locating caused by the external AC grid fault and internal fault caused by the internal distribution network. Simulation results show that the proposed method can accomplish locates the sag source from upstream or downstream.
    Key words: DC distribution network; voltage sag source location; DC disturbing power
 
參考文獻(xiàn)
[1] 孫鵬飛,賀春光,邵華,等. 直流配電網(wǎng)研究現(xiàn)狀與發(fā)展[J]. 電力自動化設(shè)備,2016,36(6):64-73.
[2] 史清芳,徐習(xí)東,趙宇明. 電力電子設(shè)備對直流配電網(wǎng)可靠性影響[J]. 電網(wǎng)技術(shù),2016,40(3):725-732.
[3] BARAN M E, MAHAJAN N R.DC distribution for industrial systems: Opportunities and challenges[J].IEEE Transactions on Industry Applications,2003,39(6):1596-1601.
[4] KAKIGANO H, MIURA Y, ISE T.Low-voltage bipolar-type DC microgrid for super high quality distribution[J].IEEE Transactions on Power Electronics,2010,25(12):3066-3075.
[5] 金一丁,宋強(qiáng),劉文華. 基于公共直流母線的鏈?zhǔn)娇赏卣闺姵貎δ芟到y(tǒng)及控制[J]. 電力系統(tǒng)自動化,2010,34(15):66-70.
[6] PARSONS A C, GRADY W M, POWERS E J, et al. A direction finder  for power quality disturbances based upon disturbance power and energy[J].IEEE Transactions on Power Delivery,2000,15(3):1081-1086.
[7] TAYJASANANT T, LI Chun, XU W.A resistance sign-based method for voltage sag source detection[J].IEEE Transactions on Power Delivery,2005,20(4):2544-2551.
[8] HAMZAH N, MOHAMED A, HUSSAIN A.A new approach to locate the voltage sag source using real current component[J].Electric Power Systems Research,2004,72(2):113-123.
[9] 呂干云,孫維蒙,汪曉東,等. 電力系統(tǒng)電壓暫降源定位方法綜述[J]. 電力系統(tǒng)保護(hù)與控制,2010,38(23):241-245.
[10] 徐銘銘,肖立業(yè),林良真. 直流配電網(wǎng)單極接地故障定位方法[J]. 電工電能新技術(shù),2015,34(11):55-62.
[11] 徐銘銘,肖立業(yè),王海風(fēng),等. 一種基于Prony算法的直流配電網(wǎng)電纜故障定位方法[J]. 電工電能新技術(shù),2015,34(4):1-5.
[12] 和敬涵,張明,羅國敏,等. 一種利用故障暫態(tài)過程的柔性直流配電網(wǎng)故障測距方法[J]. 電網(wǎng)技術(shù),2017,41(3):985-992.
[13] 廖建權(quán),周念成,王強(qiáng)鋼,等. 直流配電網(wǎng)電能質(zhì)量指標(biāo)定義及關(guān)聯(lián)性分析[J]. 中國電機(jī)工程學(xué)報,2018,38(23):6847-6860.