Research on Inrush Current Suppression of Transformer Based on Changeable Closing Angle

doi:10.11930/j.issn.1004-9649.202201098

Abstract

Abstract: The transformer no-load closing inrush current may cause safety problems in power grid, and the controlled switching technology with fixed target angle still has room for improvement in suppressing inrush current. A transformer inrush current suppression method and controlled-switching strategy are thus proposed based on changeable closing angle. The high voltage side PT or low voltage side PT of transformer is used to calculate the residual flux, and the target closing angle is adjusted according to residual flux. The key factors influencing the residual flux are determined, and the principles for choosing the target closing angle are proposed. A device prototype is developed and its effectiveness is verified through dynamic simulation and test station, which can provide reference for its engineering application.

Key words: transformer, inrush current, controlled switching, controlled-switching strategy, closing resistor, residual flux

LI Haitao, LIU Beiyang, TENG Wentao, LI Kuan, LIU Dongchao, XU Lei. Research on Inrush Current Suppression of Transformer Based on Changeable Closing Angle[J]. Electric Power, 2022, 55(9): 70-78.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202201098

https://www.electricpower.com.cn/EN/Y2022/V55/I9/70

References

[1] 徐方维, 龙晨瑞, 郭凯, 等. 基于正序分量相位差的电压暂降源定位方法[J]. 智慧电力, 2022, 50(7): 7–15
XU Fangwei, LONG Chenrui, GUO Kai, et al. Location method of voltage sag source based on phase difference of positive sequence components[J]. Smart Power, 2022, 50(7): 7–15
[2] 许家源, 华争祥, 朱苛娄, 等. 选相关合技术抑制空载变压器励磁涌流的实验研究[J]. 电力系统保护与控制, 2018, 46(8): 135–141
XU Jiayuan, HUA Zhengxiang, ZHU Kelou, et al. Experimental research on inrush current suppression of unloaded transformers based on the controlled switching[J]. Power System Protection and Control, 2018, 46(8): 135–141
[3] 傅伟, 赵莉华, 梁勇, 等. 多台变压器空载合闸励磁涌流及其抑制方案的研究[J]. 电力系统保护与控制, 2015, 43(1): 28–33
FU Wei, ZHAO Lihua, LIANG Yong, et al. Study on no-load closing inrush current of transformer group and suppression measures[J]. Power System Protection and Control, 2015, 43(1): 28–33
[4] 李永明, 何胜鱼, 王旭旭, 等. 变电站大型电力设备工频磁场计算及分析[J]. 南方电网技术, 2019, 13(11): 83–88
LI Yongming, HE Shengyu, WANG Xuxu, et al. Calculation and analysis of power frequency magnetic field of large power equipment in substation[J]. Southern Power System Technology, 2019, 13(11): 83–88
[5] 洪潮, 张庆华, 张野, 等. 基于J-A磁滞模型的高效电磁暂态变压器建模[J]. 南方电网技术, 2020, 14(2): 75–83
HONG Chao, ZHANG Qinghua, ZHANG Ye, et al. Efficient electromagnetic transient modeling of transformer based on J-A hysteresis model[J]. Southern Power System Technology, 2020, 14(2): 75–83
[6] 甘团杰, 郑建涵, 张艳, 等. 基于领域自适应的变压器状态识别[J]. 智慧电力, 2022, 50(2): 82–88
GAN Tuanjie, ZHENG Jianhan, ZHANG Yan, et al. Transformer condition identification based on domain adaptation[J]. Smart Power, 2022, 50(2): 82–88
[7] 周波, 常晓青, 张华, 等. 计及剩磁、合闸电阻及选相合闸策略的励磁涌流仿真评估方法[J]. 四川电力技术, 2018, 41(6): 37–40,74
ZHOU Bo, CHANG Xiaoqing, ZHANG Hua, et al. Evaluation method for inrush current simulation considering residual flux, closing resistance and phase-controlled switching strategy[J]. Sichuan Electric Power Technology, 2018, 41(6): 37–40,74
[8] 王昊晴, 杨海芳, 林金阳, 等. 真空断路器选相合闸空载变压器的试验研究[J]. 高压电器, 2017, 53(3): 172–177
WANG Haoqing, YANG Haifang, LIN Jinyang, et al. Experimental study on the phase control closing of vacuum circuit breakers for no-load transformer[J]. High Voltage Apparatus, 2017, 53(3): 172–177
[9] 陈向宜, 甄威, 刘明忠. 特高压直流换流站选相合闸控制装置现场调试技术[J]. 电网技术, 2012, 36(2): 17–22
CHEN Xiangyi, ZHEN Wei, LIU Mingzhong. On-site commissioning technology for phase-selection switching on control of UHVDC converter station[J]. Power System Technology, 2012, 36(2): 17–22
[10] 兀鹏越, 余信, 李毅, 等. 变压器励磁涌流抑制器工程应用及探讨[J]. 电力自动化设备, 2012, 32(6): 145–149
WU Pengyue, YU Xin, LI Yi, et al. Engineering application of transformer excitation inrush suppressor[J]. Electric Power Automation Equipment, 2012, 32(6): 145–149
[11] 陈川江, 方春恩, 曾俊龙, 等. 计及剩磁的空载变压器选相合闸研究[J]. 电力系统保护与控制, 2018, 46(16): 82–88
CHEN Chuanjiang, FANG Chunen, ZENG Junlong, et al. Research on unloaded transformer controlled switching considering residual flux[J]. Power System Protection and Control, 2018, 46(16): 82–88
[12] 邢运民, 罗建, 周建平, 等. 变压器铁心剩磁估量[J]. 电网技术, 2011, 35(2): 169–172
XING Yunmin, LUO Jian, ZHOU Jianping, et al. Estimation of remanence in transformer core[J]. Power System Technology, 2011, 35(2): 169–172
[13] 戈文祺, 汪友华, 陈学广, 等. 电力变压器铁心剩磁的测量与削弱方法[J]. 电工技术学报, 2015, 30(16): 10–16
GE Wenqi, WANG Youhua, CHEN Xueguang, et al. Method to measure and weaken the residual flux of the power transformer core[J]. Transactions of China Electrotechnical Society, 2015, 30(16): 10–16
[14] 林明星, 廖敏夫. 选相分合闸削弱变压器励磁涌流的应用研究[J]. 四川电力技术, 2008, 31(增刊1): 5–9
LIN Mingxing, LIAO Minfu. The study on the application of chose-phase divide and combine brake used to reduce the inrush current of transformer[J]. Sichuan Electric Power Technology, 2008, 31(S1): 5–9
[15] 牛帅杰, 赵莉华, 陈凌, 等. 基于时间-电流曲线的变压器剩磁检测方法研究[J]. 电测与仪表, 2017, 54(7): 64–68,80
NIU Shuaijie, ZHAO Lihua, CHEN Ling, et al. Study on transformer residual flux detection method based on the time-current curve[J]. Electrical Measurement & Instrumentation, 2017, 54(7): 64–68,80
[16] 陈川江, 方春恩, 李伟, 等. 计及剩磁的中性点不接地变压器选相合闸仿真与实验[J]. 高电压技术, 2019, 45(11): 3521–3528
CHEN Chuanjiang, FANG Chunen, LI Wei, et al. Simulation and experiment of controlled switching for isolated neutral transformer considering residual flux[J]. High Voltage Engineering, 2019, 45(11): 3521–3528
[17] HIMATA Y, HIRAIDE M, TANAKA R, et al. Residual magnetic flux of three-phase three-leg transformer for controlled switching[C]//2018 IEEE/PES Transmission and Distribution Conference and Exposition (T&D). Denver, CO, USA. IEEE, 2018: 1–5.
[18] TSUTADA H, HIRAI T, KOHYAMA H, et al. A basic study of controlled closing for transformers with residual flux[J]. IEEE Transactions on Power and Energy, 2003, 123(6): 765–771.
[19] 方春恩, 陈川江, 李伟, 等. 断路器均压电容对空载变压器选相关合的影响[J]. 电网技术, 2018, 42(6): 1960–1966
FANG Chunen, CHEN Chuanjiang, LI Wei, et al. Influence of breaker's grading capacitor on controlled switching for unloaded transformer[J]. Power System Technology, 2018, 42(6): 1960–1966
[20] 王黎明, 方斌. 500 kV电容式电压互感器暂态特性仿真[J]. 高电压技术, 2012, 38(9): 2389–2396
WANG Liming, FANG Bin. Simulations on transient characteristics of 500 kV capacitor voltage transformer[J]. High Voltage Engineering, 2012, 38(9): 2389–2396
[21] 臧雯, 冯志彪. 电容式电压互感器的数字仿真模型[J]. 同济大学学报(自然科学版), 2004, 32(3): 401–406
ZANG Wen, FENG Zhibiao. Digital simulation models of capacitor voltage transformer[J]. Journal of Tongji University (Natural Science), 2004, 32(3): 401–406
[22] 王德忠, 王季梅. 电容式电压互感器误差频率特性的研究[J]. 高电压技术, 2001, 27(2): 66–68
WANG Dezhong, WANG Jimei. The study of error characteristic changing with frequency for the capacitor voltage transformer[J]. High Voltage Engineering, 2001, 27(2): 66–68