新投运1 000 kV特高压并联电抗器产生乙炔原因及改进
乔振朋,赵泽方,姬彦洵,李爽,杜宇轩,王卓
(国网河南省电力公司直流中心,河南 郑州 450007)
摘 要:对新投运的 1 000 kV 特高压并联电抗器产生乙炔原因展开分析,并通过返厂解体检查确认乙炔产生原因为磁分路接地片与接地线连接不可靠,造成磁分路接地不可靠,发生接触性放电。提出了磁分路夹件侧屏蔽管新的接地方式,由原有的屏蔽管与夹件接触接地更改为屏蔽管与夹件可靠绝缘后用接地线连接,避免因振动引起的接触不可靠,为特高压并联电抗器生产、运维检修提供了参考。
关键词: 特高压;并联电抗器;磁分路;接地
中图分类号:TM472 文献标识码:B 文章编号:1007-3175(2023)05-0029-07
Cause and Improvement of Acetylene Generation in the 1 000 kV UHV
Shunt Reactor Newly Put into Operation
QIAO Zhen-peng, ZHAO Ze-fang, JI Yan-xun, LI Shuang, DU Yu-xuan, WANG Zhuo
(State Grid Henan DC Center, Zhengzhou 450007, China)
Abstract: The paper first analyzes why the 1 000 kV UHV shunt reactor newly put into operation generates acetylene through disassembly inspection in the factory, and the cause of it is that the unreliable connection between the grounding strip and the grounding wire of the magnetic shunt leads to unreliable magnetic shunt grounding which makes contact discharge happen. Therefore, a new grounding mode of shielding pipes on the side of magnetic shunt clamps is proposed. It changes the grounding mode from the contact grounding between shielding pipes and clamps to using grounding wires to connect shielding pipes and clamps that have been insulated. This method can avoid unreliable contact caused by vibration,provide great reference for the production, operation and maintenance of UHV shunt reactors.
Key words: ultra high voltage; shunt reactor; magnetic shunt; grounding
参考文献
[1] 官澜,李光范,李博,等. 我国特高压电力变压器研制技术及发展[J] . 变压器,2014,51(8):28-33.
[2] 谭风雷,陈昊,何嘉弘. 基于最佳分段和改进半物理模型的特高压并联电抗器顶层油温预测[J] . 电网技术,2021,45(8):3314-3323.
[3] 刘旸,韩洪刚,隋新,等. 一起油浸式电抗器火灾事故分析与防火对策研究[J] . 变压器,2020,57(9):85-87.
[4] 束畅,章茜,高燃,等. 一起 1 000 kV 特高压并联电抗器内部故障分析[J] . 东北电力技术,2018,39(6):19-22.
[5] 赵若妤,马宏忠,魏旭,等. 基于 EWT 及多尺度形态谱的高压并联电抗器故障诊断研究[J] . 电力系统保护与控制,2020,48(17):68-75.
[6] 解文鹏,郑智聪. 特高压并联电抗器振动疲劳分析与研究[J] . 电子设计工程,2020,28(16):163-167.
[7] BHARTI Satyadharma, DUBEY Satya P.Controlled Shunt Reactor for UHVAC System Reactive Power Control[J].Recent Advances in Electrical & Electronic Engineering,2020,13(3):417-425.
[8] 吴书煜,马宏忠,姜宁,等. 基于多物理场耦合的特高压并联电抗器振动噪声仿真分析与实验研究[J] .电力自动化设备,2020,40(3):122-127.
[9] 周兵,王延召,胡静竹,等. 基于振动测量的并联电抗器声场计算[J] . 高压电器,2019,55(11):105-112.