乔振朋¹,田燕山²,王卓¹,杜宇轩¹,李爽¹
QIAO Zhenpeng¹, TIAN Yanshan², WANG Zhuo¹, DU Yuxuan¹, LI Shuang¹

• 1:国网河南省电力公司直流中心， 郑州 450007
• 2:国家电网有限公司特高压建设分公司， 北京 100052

摘要(Abstract)：

针对一起1000 kV特高压并联电抗器中联管I与联管II焊接部位开裂导致漏油问题，通过对焊接部位外观检查、材质化学成分分析、强度试验和强度受力仿真分析，确定原因为：操作人员在焊接过程中，焊接电流过大或焊接过快，造成焊接线能量较大，焊缝在冷却收缩时，由于焊接应力的存在，导致焊缝根部出现裂纹，在电抗器投运后，内部缺陷扩大，开裂漏油。提出改进并联电抗器联管配装工艺、减少配装过程应力的建议，避免类似漏油故障再次发生。
In view of the oil leakage caused by the welding part cracking of the connecting pipe I and the connecting pipe II in a 1000 kV UHV shunt reactor, the reasons are determined as follows through the appearance inspection of the welding part, chemical composition analysis of the material, strength test and strength force simulation analysis: During the welding process, the welding current is too large or too fast, resulting in large energy of the welding line. When the welding line is cooled and contracted, cracks appear at the root of the weld due to the existence of welding stress. After the reactor is put into operation, the internal defects expand, crack and leak oil. Suggestions are put forward to improve the assembly process of shunt reactor connecting pipe and reduce the stress in the assembly process, so as to avoid the recurrence of similar oil leakage faults.

关键词(KeyWords)： 特高压;并联电抗器;联管;断裂;焊接部位
UHV;shunt reactor;connecting pipe;fracture;welding position

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目“特高压变压器和高抗典型潜伏性缺陷检测技术研究”（5108-2022V8280A-2-345-XG）

作者(Author): 乔振朋¹,田燕山²,王卓¹,杜宇轩¹,李爽¹
QIAO Zhenpeng¹, TIAN Yanshan², WANG Zhuo¹, DU Yuxuan¹, LI Shuang¹

DOI: 10.19929/j.cnki.nmgdljs.2023.0009

参考文献(References)：

• [1] 张弄韬，颜冰，彭庆军，等.500 kV油浸式高压并联电抗器全寿命周期管理方法[J].云南电力技术，2018，46（5）：59-63. ZHANG Nongtao, YAN Bing, PENG Qingjun, et al. Study on Assessed Method for Insulation State of 500 kV High Voltage Shunt Reactor with oil type[J]. Yunnan Electric Power, 2018, 46(5): 59-63.
  [2] 束畅，章茜，高燃，等.一起1000 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）：19-22，25. SHU Chang, ZHANG Xi, GAO Ran, et al. Analysis of Internal in Failure a 1000 kV High Voltage Shunt Reactor[J]. Northeast Electric Power Technology, 2018, 39(6): 19-22, 25.
  [3] 郭佳熠，耿江海，律方成，等.气隙结构对特高压并联电抗器铁芯振动的影响[J].电力自动化设备，2021，41（1）：211-219. GUO Jiayi, GENG Jianghai, LYU Fangcheng, et al. Influence of air gap structure on core vibration of UHV shunt reactor [J]. Electric Power Automation Equipment, 2021, 41(1): 211-219.
  [4] 王革鹏，金文德，曾向阳，等.特高压并联电抗器铁心振动的分析与控制研究[J].电工技术学报，2022，37（9）：2190-2198. WANG Gepeng, JIN Wende, ZENG Xiangyang, et al. Analysis and Control Research on Core Vibration of UHV Shunt Reactor [J]. Transactions of China Electrotechnical Society, 2022, 37(9): 2190-2198.
  [5] 谭风雷，陈昊，何嘉弘.基于K-means聚类方法和相似时段的特高压并联电抗器油温预测[J].电力自动化设备，2021，41（6）：213-223. TAN Fenglei, CHEN Hao, HE Jiahong. Oil temperature forecasting of UHV shunt reactor based on K-means clustering method and similar period[J]. Electric Power Automation Equipment, 2021, 41(6): 213-223.
  [6] 倪园，周兵，裴春明，等.1000 kV特高压并联电抗器周围声波干涉特性分析[J].高电压技术，2014，40（12）：3926-3932. NI Yuan, ZHOU Bing, PEI Chunming, et al. Characteristics Analysis of Acoustic Interference Around 1000 kV UHV Shunt Reactor[J]. High Voltage Engineering, 2014, 40(12): 3926-3932.
  [7] 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. WU Shuyu, MA Hongzhong, JIANG Ning, et al. Simulation analysis and experimental research on vibration and noise of UHV shunt reactor based on multi physical field coupling[J]. Electric Power Automation Equipment, 2020, 40(3): 122-127.
  [8] 全国压力容器标准化技术委员会.钢制压力容器焊接工艺评定： JB 4708—2000[S].昆明：云南科技出版社，2000.
  [9] 律方成，郭佳熠，程涣超，等.计及铁心叠片规则与流-固耦合的特高压并联电抗器铁心振动计算方法[J].电网技术，2021，45（2）： 802-811. LYU Fangcheng, GUO Jiayi, CHENG Huanchao, et al. Calculation of UHV Shunt Reactor Core Vibration Considering Core Lamination Rules and Fluid-solid Coupling[J]. Power System Technology, 2021, 45(2): 802-811.
  [10] 龚筱琦，谭黎军，邹宇星.特高压并联电抗器铁轭级块磁通分布计算方法[J].变压器，2021，58（8）：13-17. GONG Xiaoqi, TAN Lijun, ZOU Yuxing. Calculation Method of Magnetic Flux Distribution in Yoke Stage of UHV Shunt Reactor[J]. Transformer, 2021, 58(8): 13-17.
  [11] 徐征宇，李金忠，葛栋，等.特高压并联电抗器高性能隔声装置研制[J].高电压技术，2018，44（7）：2276-2283. XU Zhengyu, LI Jinzhong, GE Dong, et al. Development of High Performance Sound Insulation Device for UHV Shunt Reactor[J]. High Voltage Engineering, 2018, 44(7): 2276-2283.
  [12] 吴超，遇心如，孙金鸽，等.特高压并联电抗器中性点小电抗的过电压及绝缘水平分析[J].电网与清洁能源，2021，37（2）：11-22. WU Chao, YU Xinru, SUN Jinge, et al. Analysis of the Over-voltage and Insulation Level of Small Reactance at Neutral Point of UHV Shunt Reactors[J]. Advances of Power System & Hydroelectric Engineering, 2021, 37(2): 11-22.
  [13] 郭佳熠.特高压并联电抗器铁心振动机理及减振措施研究[D].北京：华北电力大学，2021.
  [14] 张允.单心柱特高压并联电抗器温度场研究[D].济南：山东大学， 2017.
  [15] 乔小冬，韩铎.高压并联电抗器带电检测异常分析[J].内蒙古电力技术，2021，39（5）：84-88. QIAO Xiaoguo, HAN Duo. Analysis on Abnormal Live Detection of High Voltage Shunt Reactor[J]. Inner Mongolia Electric Power, 2021, 39(5): 84-88.
  [16] 李鹏，李飒，杨海超，等.一起500 kV变压器局部放电试验异常的分析处理[J].变压器，2020，57（6）：85-87. LI Peng, LI Sa, YANG Haichao, et al. Analysis and Treatment of PD Unqualified Phenomenon in a 500 kV Transformer [1][J]. Transformer, 2020, 57(6): 85-87.
  [17] 刘奋霞，刘晔，禹云长，等.特高压油浸式铁心并联电抗器内部温度场数值计算与实验研究[J].高压电器，2017，53（1）：163-168. LIU Fenxia, LIU Ye, YU Yunchang, et al.Numerical and Experimental Research of Internal Temperature Field of Oil-immersed Core Shunt Reactor with Ultra-high Voltage[J]. High Voltage Apparatus, 2017, 53(1): 163-168.
  [18] 方超，李学成，皮本熙，等.特高压并联电抗器内部温度测量方法[J].变压器，2017，54（7）：56-59. FANG Chao, LI Xuecheng, PI Benxi, et al. Measuring Method of Internal Temperature of UHV Shunt Reactor[J]. Transformer, 2017, 54(7): 56-59.