电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2014年
1期
3618-3623
,共6页
±800 kV直流工程系统试验%孤岛运行方式试验%融冰接线方式试验%技术问题分析
±800 kV直流工程繫統試驗%孤島運行方式試驗%融冰接線方式試驗%技術問題分析
±800 kV직류공정계통시험%고도운행방식시험%융빙접선방식시험%기술문제분석
±800kV UHVDC transmission project system test%test of islanded operation mode%de-icing mode test%technical problems analysis
概述了锦屏-苏南(简称锦苏)±800 kV特高压直流输电工程系统试验结果。针对特高压直流主回路46种接线方式进行了研究，确定了系统试验方案分为单换流器、单极、双极和融冰接线方式4部分内容，编制了系统试验方案；针对锦苏送端锦屏侧孤岛运行方式进行了研究，解决了孤岛方式试验过程中发生的频率振荡问题，完成了孤岛运行方式系统试验；对融冰接线方式系统试验进行了研究，解决了系统试验中融冰方式的技术问题，确定了融冰接线方式系统试验项目，顺利完成了融冰接线方式系统试验；对系统试验过程中发现的主要技术问题进行了分析，内容包括：苏州站极I阀控单元跳闸试验，造成锦屏站中性母线避雷器损坏问题的分析；锦屏站极 II 高端换流器跳闸闭锁后，低端换流发生跳闸问题分析；锦屏站交流滤波器频繁投切问题分析；苏州站5612滤波器断路器C相损坏事件分析等。这些问题的解决保证了锦苏特高压直流输电工程系统调试的顺利进行和按期投入运行。
概述瞭錦屏-囌南(簡稱錦囌)±800 kV特高壓直流輸電工程繫統試驗結果。針對特高壓直流主迴路46種接線方式進行瞭研究，確定瞭繫統試驗方案分為單換流器、單極、雙極和融冰接線方式4部分內容，編製瞭繫統試驗方案；針對錦囌送耑錦屏側孤島運行方式進行瞭研究，解決瞭孤島方式試驗過程中髮生的頻率振盪問題，完成瞭孤島運行方式繫統試驗；對融冰接線方式繫統試驗進行瞭研究，解決瞭繫統試驗中融冰方式的技術問題，確定瞭融冰接線方式繫統試驗項目，順利完成瞭融冰接線方式繫統試驗；對繫統試驗過程中髮現的主要技術問題進行瞭分析，內容包括：囌州站極I閥控單元跳閘試驗，造成錦屏站中性母線避雷器損壞問題的分析；錦屏站極 II 高耑換流器跳閘閉鎖後，低耑換流髮生跳閘問題分析；錦屏站交流濾波器頻繁投切問題分析；囌州站5612濾波器斷路器C相損壞事件分析等。這些問題的解決保證瞭錦囌特高壓直流輸電工程繫統調試的順利進行和按期投入運行。
개술료금병-소남(간칭금소)±800 kV특고압직류수전공정계통시험결과。침대특고압직류주회로46충접선방식진행료연구，학정료계통시험방안분위단환류기、단겁、쌍겁화융빙접선방식4부분내용，편제료계통시험방안；침대금소송단금병측고도운행방식진행료연구，해결료고도방식시험과정중발생적빈솔진탕문제，완성료고도운행방식계통시험；대융빙접선방식계통시험진행료연구，해결료계통시험중융빙방식적기술문제，학정료융빙접선방식계통시험항목，순리완성료융빙접선방식계통시험；대계통시험과정중발현적주요기술문제진행료분석，내용포괄：소주참겁I벌공단원도갑시험，조성금병참중성모선피뢰기손배문제적분석；금병참겁 II 고단환류기도갑폐쇄후，저단환류발생도갑문제분석；금병참교류려파기빈번투절문제분석；소주참5612려파기단로기C상손배사건분석등。저사문제적해결보증료금소특고압직류수전공정계통조시적순리진행화안기투입운행。
An overview of system test results of ±800 kV UHVDC power transmission project from Jinping to Suzhou is given. 46 kinds of main circuit connection modes for UHVDC power transmission were researched, and it was determined that four main circuit connection modes should be included in the system test scheme: the connection mode for single converter, the monopole connection mode, the bipolar connection mode and the main circuit connection under de-icing operating mode, and corresponding system test schemes were drafted. The islanded operation mode of Jinping side at the sending end of ±800 kV UHVDC power transmission project from Jinping to Suzhou was researched to solve the frequency oscillation phenomenon occurred in the testing process of islanded operation mode, thus the islanded operation mode was completed; to solve technological problems related to de-icing modes in the system test, the items to be performed during system test of main circuit connection mode under de-icing operation was researched and determined, then the system test on main circuit connection mode for de-icing process was successfully completed. Main technical problems discovered during the system test were analyzed: the damage of neutral bus arrester in Jinping converter station due to the trip test of pole one valve control unit (VCU) in Suzhou converter station, the trip-out of low-voltage converter due to trip blocking of high-voltage converter of pole two in Jinping converter station, the frequent switching on/off of AC filter in Jinping converter station and the damage of phase C in circuit breaker for 5612 filter in Suzhou converter station, and so on, the solution of these problems ensured the successful commissioning of ±800 kV UHVDC power transmission project from Jinping to Suzhou and putting it into operation on schedule.
