基于邊端協(xié)同的配電網(wǎng)單相接地故障研判方案
秦海波1,湯同峰1,杜東威2,錢彬2,嚴晗1,于宙宙2
(1 國網(wǎng)江蘇省電力有限公司淮安供電分公司,江蘇 淮安 223002;
2 江蘇深瑞匯陽能源科技有限公司,江蘇 南京 211100)
摘 要:針對常規(guī)故障指示器只能采集單相線路電氣參數(shù)而造成單相接地故障判別算法受限的問題,提出了一種基于邊緣計算 FTU 和故障指示器智能聯(lián)動的多樣本波形識別研判方案。將傳統(tǒng) FTU 升級為邊緣計算 FTU,取消故障指示器匯集單元,將故障指示器采集單元通過無線網(wǎng)絡接入邊緣計算 FTU,并實現(xiàn)兩者之間的廣域同步。通過邊緣計算 FTU 和故障指示器的邊端協(xié)同,實現(xiàn)兩者之間故障錄波的數(shù)據(jù)融合,并借助于基于多樣本波形的綜合研判算法實現(xiàn)單相接地故障的準確檢測,從而實現(xiàn) 10 kV 配電網(wǎng)架空線路單相接地故障的精準研判和定位。
關鍵詞:配電物聯(lián)網(wǎng);邊緣計算FTU ;故障指示器;邊端協(xié)同;多樣本波形識別法
中圖分類號:TM711 ;TM727 文獻標識碼:A 文章編號:1007-3175(2021)10-0044-05
Research and Judgment Scheme of Single-Phase Grounding Fault in
Distribution Network Based on Edge Terminal Cooperation
QIN Hai-bo1, TANG Tong-feng1, DU Dong-wei2, QIAN Bin2, YAN Han1, YU Zhou-zhou2
(1 Huai’an Power Supply Branch, State Grid Jiangsu Electric Power Co.,Ltd, Huai’an 223002, China;
2 Jiangsu Sunri Huiyang Energy Technology Co.,Ltd, Nanjing 211100, China)
Abstract: This paper presents a multi-sample waveform recognition scheme based on the intelligent linkage of edge computing FTU and fault indicator. This scheme might solve the problem that the conventional fault indicator can only collect the electrical parameters of the single-phase line, which causes the limitation of the single-phase ground fault discrimination algorithm. This research upgraded the traditional FTU to the edge computing FTU and canceled the fault indicator collection unit. It connected the fault indicator collection unit to the edge computing FTU by using the wireless network. It realized wide-area synchronization between them.This work realized the data fusion of the fault recorder between both of them with the cooperation of edge computing FTU and fault indicator’s edge terminal. This research achieved detection accuracy by using a comprehensive research algorithm. The single-phase ground faults on overhead lines of a 10 kV distribution network could be diagnosed and located.
Key words: Distribution Internet of Things (D-IoT); edge computing FTU; fault indicator; edge terminal cooperation; multiple waveform recognition method
參考文獻
[1] 劉健. No .5 解決配電網(wǎng)自動化問題不必追求完美[J]. 供用電,2016,33(5) :27-30.
[2] 張宏波,袁欽成. 故障指示器在智能電網(wǎng)中的應用[J]. 能源技術經(jīng)濟,2011,23(1) :16-20.
[3] 華光輝,栗峰,張祥文,等. 基于云計算的配電線路小電流接地故障監(jiān)測方法研究及應用[J] . 電氣應用,2019,38(9) :65-73.
[4] 鄭國華,黃朵,張偉,等. 基于最大概率的故障指示器故障判定方法[J] . 電力系統(tǒng)保護與控制,2017,45(16) :105-110.
[5] 呂軍,欒文鵬,劉日亮,等. 基于全面感知和軟件定義的配電物聯(lián)網(wǎng)體系架構[J] . 電網(wǎng)技術,2018,42(10) :3108-3115.
[6] 崔恒志,蔣承伶,繆巍巍,等. 基于邊緣計算的電力智慧物聯(lián)系統(tǒng)設計與實現(xiàn)[J] . 電力信息與通信技術,2020,18(4) :33-41.
[7] 方明,張斌,朱志明,等. 一種基于零序電壓啟動的單相接地故障定位方法:CN110426593A [P] .2019-11-08.
[8] 賈清泉,石磊磊,王寧,等. 基于證據(jù)理論和信息熵的消弧線圈接地電網(wǎng)融合選線方法[J] . 電工技術學報,2012,27(6) :191-197.
[9] 張鈞,何正友,臧天磊. 一種基于 D-S 證據(jù)理論和穩(wěn)態(tài)量的配電網(wǎng)故障選相方法研究[J] . 電力系統(tǒng)保護與控制,2011,39(11) :49-61.
[10] 鄭顧平,杜向楠,齊鄭,等. 小電流單相接地故障在線定位裝置研究與實現(xiàn)[J] . 電力系統(tǒng)保護與控制,2012,40(8) :135-139.
[11] 王超,張海臺,胡安鋒,等. 小電流接地故障暫態(tài)定位技術應用[J]. 供用電,2015,32(9) :50-55.
[12] 宋國兵,李廣,于葉云,等. 基于相電流突變量的配電網(wǎng)單相接地故障區(qū)段定位[J] . 電力系統(tǒng)自動化,2011,35(21) :84-90.