(Super High Voltage Company of State Grid Ningxia Electric Power Co., Ltd, Yinchuan 750011, China)
Abstract: The existing cooling system of converter transformer is insufficient in heat dissipation potential during periods of heavy load,which to some extent leads to the deterioration of the operating conditions of the converter transformer, and has a negative impact on the life of the converter transformer. Under the premise that the existing converter transformer cooling method remains unchanged, this paper proposes a design scheme that uses the water spray method to help reduce the temperature rise of converter transformer body and cooler, the design process of each auxiliary cooling system and the calculation of the displacement of oil pool in rheological accident of the converter transformer are given, and good cooling effect is achieved in the work site. The scheme uses the cold water pool outside the valve of the existing converter station as the water source, has less input, is convenient for the operation and maintenance of the staff, and is convenient for the comprehensive management of the converter station, and has certain promotion value.
Key words: converter transformer; water spray; cooling system; dissipate heat
參考文獻
[1] 雷戰斐,宋海龍,劉舒楊.±800 kV 靈州換流站換流變壓器風冷系統優化設計[J]. 寧夏電力,2017(3) :32-37.
[2] 劉杉,高沖,侯俊義,等. 基于去離子水冷卻 ±800 kV 換流變壓器閥側套管的冷卻效果和參數的影響[J]. 電工技術學報,2024,39(12) :3884-3894.
[3] 劉冀邱,張珊珊,熊凌飛,等. 高海拔特高壓換流變壓器冷卻性能修正研究[J] . 高電壓技術,2024,50(1) :242-249.
[4] 王之赫,馮軒,張中平,等. 換流變冷卻器控制邏輯研究及典型案例分析[J]. 電工技術,2022(24) :179-180.
[5] 于鵬,殷丕盛,趙航,等. 默拉直流換流變冷卻系統研究及常見故障分析[J] . 電子制作,2022,30(24) :93-95.
[6] 楊柳,張麗,周月賓,等. 柔性直流換流閥與水冷變壓器外冷卻系統一體化設計方案[J] . 南方電網技術,2021,15(6) :15-19.
[7] 李星辰,廖毅. 天廣直流換流變冷卻系統電源自動切換回路研究[J]. 通信電源技術,2018,35(9) :139-140.
[8] 王偉,羅宗源,張瑞亮. 高肇直流換流變冷卻系統電源切換回路分析與改進[J]. 電工技術,2018(2) :34-35.
[9] 李毅,崔學龍,陳亮. 貴廣Ⅰ 回直流系統換流變壓器冷卻器的節能研究[J] . 南方電網技術,2013,7(5) :43-45.
[10] 劉潯,艾亮,成川,等. 換流變冷卻器全停對高壓直流系統影響[J]. 山東工業技術,2018(17) :166.
[11] 肖磊磊,林永宏,查光年. 換流變壓器冷卻系統電源自動切換回路分析[J] . 南方電網技術,2012,6(2) :47-50.
[12] 王晨睿. 宜賓換流站換流變壓器冷卻器應對交流電網擾動隱患分析[J]. 四川電力技術,2018,41(4) :85-89.