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 >> 文章瀏覽排名

HSGS下裝設限流電阻的可行性研究

來源:電工電氣發(fā)布時間:2022-05-28 09:28 瀏覽次數(shù):449

HSGS下裝設限流電阻的可行性研究

陳俊宇
(中國南方電網(wǎng)有限責任公司超高壓輸電公司廣州局,廣東 廣州 510663)
 
    摘 要:作為單極金屬回線鉗位點的換流站在運行過程中會出現(xiàn)站內(nèi)地網(wǎng)分流的問題,對換流站內(nèi)設備及人身安全產(chǎn)生影響。提出了采用高速接地開關 (HSGS) 下裝設限流電阻的改造方案。對該方案在換流站實際運行中的應用可行性展開了研究。介紹了 HSGS 下裝設限流電阻方案的限流原理,從理論上分析了該方案實施的可行性;在 PSCAD 軟件中對該方案進行了部分故障狀況的仿真分析,進一步驗證該方案的可行性;經(jīng)過現(xiàn)場實際調(diào)試,數(shù)據(jù)分析結果表明,該方案可在解決換流站地網(wǎng)分流問題的同時滿足直流運行轉換的需要。
    關鍵詞: 高速接地開關;共用接地極;分流;限流電阻器;仿真;調(diào)試
    中圖分類號:TM54 ;TM564     文獻標識碼:A     文章編號:1007-3175(2022)05-0025-04
 
Feasibility Study on the Current-Limiting Resistor Installed Under HSGS
 
CHEN Jun-yu
(EHV Power Transmission Company Guangzhou Bureau of China Southern Power Grid Co., Ltd, Guangzhou 510663, China)
 
    Abstract: The grounding grid shunting problem emerged during the operation of the converter station of the clamping point of the unipolar metal return line. This problem could impact the equipment and the personal safety of the operator. This paper proposed the modification scheme to install a current-limiting resistor under the high-speed grounding switches(HSGS). Moreover, it studied the application of the scheme in the converter station. Furthermore, this study introduced the principle behind this modification scheme and analyzed its feasibility.It carried out a further simulation analysis of some fault conditions of the scheme in PSCAD to verify the feasibility. The data analysis results show that this scheme could meet the needs of DC operation while solving the shunting problem.
    Key words: high-speed grounding switch; common grounding electrode; shunting; current-limiting resistor; simulation; debugging
 
參考文獻
[1] 郭劍. 常規(guī)接地極與共用接地極的接地性能與技術經(jīng)濟比較[J]. 電力建設,2011,32(9) :37-41.
[2] 陳蔚東. 共用接地極引起站內(nèi)接地網(wǎng)過流保護 76SG 動作事件分析及防控[J] . 電工技術,2020(15) :130-131.
[3] 王玲, 徐柏榆, 馬明,等. 一種電網(wǎng)直流偏磁風險的量化評價方法[J] . 廣東電力,2019,32(4) :62-68.
[4] 郭純海,黑增杰. 換流站接地極入地電流對電力設備的影響分析[J] . 電力系統(tǒng)裝備,2019(23) :113-114.
[5] 陳偉,吳訓松,曹斌,等. 高壓直流接地極對地表電位和跨步電壓分布影響研究[J] . 電力學報,2019,34(1) :46-52.
[6] 南方電網(wǎng)科學研究院有限責任公司. 一種共用接地極入地電流的抑制方法及裝置:CN202010397979.6[P].2020-10-02.
[7] 南方電網(wǎng)科學研究院有限責任公司. 一種換流站內(nèi)接地裝置及直流輸電系統(tǒng):CN201721276700.9[P].2018-04-17.
[8] 許多,吳峰,史林軍,等. 基于 PSCAD 的特高壓直流輸電系統(tǒng)建模與仿真分析[J] . 電力工程技術,2020,39(3) :71-77.
[9] 余志豪,許傲然,谷采連,等. 基于 PSCAD/EMTDC 的 VSC-HVDC 直流輸電線路的故障仿真[J]. 控制工程,2016,23(2) :299-302.