不同主导机制下考虑表面陷阱效应的直流GIL绝缘子表面电荷积聚特性

doi:10.16183/j.cnki.jsjtu.2023.420

上海交通大学学报 ›› 2025, Vol. 59 ›› Issue (7): 983-994.doi: 10.16183/j.cnki.jsjtu.2023.420

• 新型电力系统与综合能源 • 上一篇下一篇

不同主导机制下考虑表面陷阱效应的直流GIL绝缘子表面电荷积聚特性

王耀港¹, 王哲铭¹, 李珂², 贾博文¹, 杨华¹, 晏武³, 卢武¹()

1.上海电力大学电气工程学院,上海 200090
2.国家电网有限公司华东分部,上海 200120
3.国网电力空间技术有限公司,北京 102209

收稿日期:2023-08-25 修回日期:2023-09-11 接受日期:2023-09-18 出版日期:2025-07-28 发布日期:2025-07-22
通讯作者: 卢武 E-mail:wuluee@shiep.edu.cn
作者简介:王耀港(1997—),硕士,从事直流GIL中表面电荷积聚行为的理论研究.
基金资助:
国家自然科学基金(51707113);上海市教育委员会和上海市教育发展基金会“晨光计划”(21CGA63)

Characteristics of Surface Charge Accumulation on Direct Current GIL Insulators Under Different Dominant Mechanisms Considering Surface Trapping Effect

WANG Yaogang¹, WANG Zheming¹, LI Ke², JIA Bowen¹, YANG Hua¹, YAN Wu³, LU Wu¹()

1. College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
2. East China Branch of State Grid Co., Ltd., Shanghai 200120, China
3. State Grid Electric Power Space Technology Co., Ltd., Beijing 102209, China

Received:2023-08-25 Revised:2023-09-11 Accepted:2023-09-18 Online:2025-07-28 Published:2025-07-22
Contact: LU Wu E-mail:wuluee@shiep.edu.cn

摘要/Abstract

摘要：

现有气-固界面电荷积聚数学模型难以解释部分微观机理,亟需完善.根据绝缘界面的双极性电荷输运原理,提出一种包含非平衡载流子入陷、脱陷等机制的气-固界面电荷传输模型,并将其纳入直流气体绝缘金属封闭输电线路(DC GIL)绝缘子表面电荷积聚的三维仿真案例中.在此基础上,分别对气体侧电荷和固体侧电荷占主导情况下的表面电荷积聚进行数值计算.结果表明:在固体侧电荷主导的电荷积聚进程中,绝缘子表面出现晕状电荷和单极性点电荷,并且随着通电时间的增加,单极性点电荷的数量增多,分布区域增大;当气体侧电荷占主导时,出现晕状电荷及单极性点电荷,后期还存在成对的双极性离散电荷斑.在与部分实验现象形成良好对照的前提下,对仿真结果进行机制分析,研究结果可加深理解表面陷阱效应对电荷积聚特性影响.

关键词: 直流气体绝缘线路, 仿真研究, 表面电荷, 充电模式, 表面陷阱

Abstract:

The existing mathematical models for charge accumulation at the gas-solid interface can hardly illustrate some microscopic mechanisms, which need improvement. Therefore, based on the theory of bipolar charge transport at insulating interfaces, a charge transport model is proposed for gas-solid interfaces including the mechanisms of trapping and de-trapping of nonequilibrium carriers, which is incorporated into a three-dimensional simulation model for the charge accumulation on the surface of direct current gas-insulated transmission lines (DC GIL). Numerical simulations of the surface charge accumulation with the dominance of gas-side charge and solid-side charge are conducted, respectively. The simulation results show that in the charge accumulation process dominated by the solid-side charge, halo-like charge and unipolar charge spots appear on the insulator surface. With the increase of energization time, the number of unipolar charge spots increases and the distribution area expands. In the process dominated by gas-side charge, in addition to the appearance of halo-like charge and unipolar charge spots, a pair-distributed bipolar discrete charge speckle occurs at a later stage. Subsequently, the simulation results are analyzed for mechanisms, on the premise that the simulation results are in good contrast with some of the experimental phenomena. The findings of this study can deepen the understanding of the impact of surface trapping effects on charge accumulation behavior.

Key words: direct current gas-insulated transmission lines (DC GIL), simulation studies, surface charge, charge accumulation pattern, surface trap

中图分类号:

TM854

王耀港, 王哲铭, 李珂, 贾博文, 杨华, 晏武, 卢武. 不同主导机制下考虑表面陷阱效应的直流GIL绝缘子表面电荷积聚特性[J]. 上海交通大学学报, 2025, 59(7): 983-994.

WANG Yaogang, WANG Zheming, LI Ke, JIA Bowen, YANG Hua, YAN Wu, LU Wu. Characteristics of Surface Charge Accumulation on Direct Current GIL Insulators Under Different Dominant Mechanisms Considering Surface Trapping Effect[J]. Journal of Shanghai Jiao Tong University, 2025, 59(7): 983-994.

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参考文献 29

[1]	胡宏, 陈新仪, 王利峰, 等. 面向新型电力系统的华东电网运行备用体系构建方法[J]. 上海交通大学学报, 2021, 55(12): 1640-1649. doi: 10.16183/j.cnki.jsjtu.2021.273
	HU Hong, CHEN Xinyi, WANG Lifeng, et al. Construction method of an operating reserve system for East China power grid oriented to new power systems[J]. Journal of Shanghai Jiao Tong University, 2021, 55(12): 1640-1649.
[2]	李惠玲, 王曦, 高剑, 等. 新型电力系统背景下西部送端直流电网方案构建[J]. 中国电力, 2023, 56(5): 12-21.
	LI Huiling, WANG Xi, GAO Jian, et al. Scheme construction for sending end DC grids in Western China under the background of new power system[J]. Electric Power, 2023, 56(5): 12-21.
[3]	花秀峰, 李婉莹, 富丽娟, 等. 省域新能源与电网发展差异的时空格局演变[J]. 广东电力, 2023, 36(2): 33-41.
	HUA Xiufeng, LI Wanying, FU Lijuan, et al. Temporal and spatial pattern evolution of provincial new energy and power grid development differences[J]. Guangdong Electric Power, 2023, 36(2): 33-41.
[4]	LI C Y, ZHANG C H, LV J Z, et al. China’s 10-year progress in DC gas-insulated equipment: From basic research to industry perspective[J]. iEnergy, 2022, 1(4): 400-433.
[5]	张鹏飞, 徐静怡, 郭巍, 等. 粤港澳大湾区电力系统低碳转型[J]. 上海交通大学学报, 2022, 56(3): 293-302. doi: 10.16183/j.cnki.jsjtu.2021.436
	ZHANG Pengfei, XU Jingyi, GUO Wei, et al. Low-carbon transformation of the power system in the Guangdong-Hong Kong-Macao greater bay area[J]. Journal of Shanghai Jiao Tong University, 2022, 56(3): 293-302.
[6]	XUE J Y, ZHANG Z, LI B B, et al. Temperature-dependent adaptive conductivity coating for surface charge release and electric field control under electro-thermal coupling field[J]. High Voltage, 2023: 1-11.
[7]	王哲铭, 潘越, 张磊, 等. 直流GIL气-固界面电荷调控的影响因素分析[J]. 中国电机工程学报, 2021, 41(20): 7177-7192.
	WANG Zheming, PAN Yue, ZHANG Lei, et al. Analysis of the factors influencing charge regulation at the gas-solid interface of DC GIL[J]. Proceedings of the CSEE, 2021, 41(20): 7177-7192.
[8]	黄远明, 张玉欣, 夏赞阳, 等. 考虑需求响应资源和储能容量价值的新型电力系统电源规划方法[J]. 上海交通大学学报, 2023, 57(4): 432-441. doi: 10.16183/j.cnki.jsjtu.2021.477
	HUANG Yuanming, ZHANG Yuxin, XIA Zanyang, et al. Power system planning considering demand response resources and capacity value of energy storage[J]. Journal of Shanghai Jiao Tong University, 2023, 57(4): 432-441.
[9]	LI C Y, LIN C J, CHEN G, et al. Field-dependent charging phenomenon of HVDC spacers based on dominant charge behaviors[J]. Applied Physics Letters, 2019, 114(20): 202904.
[10]	薛建议, 王涵, 李科峰, 等. 直流GIL中盆式绝缘子表面电荷分布特性研究[J]. 中国电机工程学报, 2018, 38(20): 6164-6172.
	XUE Jianyi, WANG Han, LI Kefeng, et al. Research on charge distribution characteristics on spacer surface in DC GIL[J]. Proceedings of the CSEE, 2018, 38(20): 6164-6172.
[11]	LUTZ B, KINDERSBERGER J. Surface charge accumulation on cylindrical polymeric model insulators in air: Simulation and measurement[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2011, 18(6): 2040-2048.
[12]	罗毅, 唐炬, 潘成, 等. 直流GIS/GIL盆式绝缘子表面电荷主导积聚方式的转变机理[J]. 电工技术学报, 2019, 34(23): 5039-5048.
	LUO Yi, TANG Ji, PAN Cheng, et al. The transition mechanism of surface charge accumulation dominating way in DC GIS/GIL[J]. Transactions of China Electrotechnical Society, 2019, 34(23): 5039-5048.
[13]	XUE J Y, WANG H, LIU Y Q, et al. Surface charge distribution patterns of a truncated cone-type spacer for high-voltage direct current gas-insulated metal-enclosed transmission line/gas-insulated metal-enclosed switchgear[J]. IET Science, Measurement & Technology, 2018, 12(4): 436-442.
[14]	胡琦, 李庆民, 刘智鹏, 等. 基于表层梯度电导调控的直流三支柱绝缘子界面电场优化方法[J]. 电工技术学报, 2022, 37(7): 1856-1865.
	HU Qi, LI Qingmin, LIU Zhipeng, et al. Interfacial electric field optimization of DC tri-post insulator based on gradient surface conductance regulation[J]. Transactions of China Electrotechnical Society, 2022, 37(7): 1856-1865.
[15]	李进, 张程, 杜伯学, 等. 直流GIL用非线性电导环氧绝缘子电场仿真[J]. 高电压技术, 2019, 45(4): 1056-1063.
	LI Jin, ZHANG Cheng, DU Boxue, et al. Electrical field simulation of epoxy spacer with nonlinear conductivity for DC GIL[J]. High Voltage Engineering, 2019, 45(4): 1056-1063.
[16]	LI C Y, ZHANG L, WANG Y, et al. Conductor surface roughness-dependent gas conduction process for HVDC GIL—Part II: Experiment[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2021, 28(3): 988-995.
[17]	LUO Y, TANG J, PAN Z J, et al. How temperature and pressure affect the electric field distribution in HVDC GIS/GIL: A numerical study[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2021, 28(4): 1334-1342.
[18]	晏武, 张周胜, 邓保家, 等. 温度和正极性电压对直流GIL盆式绝缘子表面电荷积聚的影响[J]. 高电压技术, 2019, 45(12): 3889-3897.
	YAN Wu, ZHANG Zhousheng, DENG Baojia, et al. Influence of temperature and positive voltage on surface charge accumulation for the disc insulator of GIL under DC voltage[J]. High Voltage Engineering, 2019, 45(12): 3889-3897.
[19]	SHIMAKAWA H, SATO M, KUMADA A, et al. Temperature dependence of surface charge accumulation on DC-GIS insulating spacer[J]. IEEE Transactions on Power Delivery, 2022, 37(6): 4539-4547.
[20]	IWABUCHI H, MATSUOKA S, KUMADA A, et al. Influence of tiny metal particles on charge accumulation phenomena of GIS model spacer in high-pressure SF₆ gas[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2013, 20(5): 1895-1901.
[21]	ZHANG B Y, QI Z, ZHANG G X. Charge accumulation patterns on spacer surface in HVDC gas-insulated system: Dominant uniform charging and random charge speckles[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2017, 24(2): 1229-1238.
[22]	QI B, GAO C J, LIU S, et al. Surface charge distribution on GIS insulator under DC/AC voltage[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2017, 24(5): 3173-3181.
[23]	陈韵中, 蔡姝娆, 闵道敏, 等. 环氧介质与SF₆气体的气固耦合沿面闪络与失效概率分布特性仿真研究[J]. 中国电机工程学报, 2022, 42(16): 6145-6154.
	CHEN Yunzhong, CAI Shurao, MIN Daomin, et al. Simulation on gas solid coupling surface flashover and failure probability distribution between epoxy resin and SF₆[J]. Proceedings of the CSEE, 2022, 42(16): 6145-6154.
[24]	WANG Y G, WANG Z M, ZHAO W B, et al. Competitive effect of charge injection on surface charge accumulation of the DC GIL insulator: A numerical study[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2022, 29(6): 2320-2329.
[25]	庞曦, 许天蕾, 刘鹏. 考虑温度梯度的高压直流GIL盆式绝缘子空间电荷仿真[J]. 高电压技术, 2023: 1-12.
	PANG Xi, XU Tianlei, LIU Peng, et al. Space charge simulation for basin insulator of high voltage DC GIL under temperature gradient[J]. High Voltage Engineering, 2023: 1-12.
[26]	LI Z, MIN D M, NIU H, et al. Simulation of DC surface flashover of epoxy composites in compressed nitrogen[J]. Journal of Applied Physics, 2021, 130(5): 053301.
[27]	REN H W, LI Q M, LI C Q, et al. Numerical simulation of the space charge accumulation inside solid insulation subjected to special polarization conditions[J]. Physica Scripta, 2020, 95(4): 045807.
[28]	蔡新景, 王新新, 邹晓兵, 等. 基于Helmholtz模型的流注放电过程光电离快速计算[J]. 中国电机工程学报, 2015, 35(1): 240-246.
	CAI Xinjing, WANG Xinxin, ZOU Xiaobing, et al. Fast computation of photoionization in streamer discharges based on Helmholtz model[J]. Proceedings of the CSEE, 2015, 35(1): 240-246.
[29]	李元, 穆海宝, 邓军波, 等. 正极性纳秒脉冲电压下变压器油中流注放电仿真研究[J]. 物理学报, 2013, 62(12): 124703.
	LI Yuan, MU Haibao, DENG Junbo, et al. Simulational study on streamer discharge in transformer oil under positive nanosecond pulse voltage[J]. Acta Physica Sinica, 2013, 62(12): 124703.

不同主导机制下考虑表面陷阱效应的直流GIL绝缘子表面电荷积聚特性

Characteristics of Surface Charge Accumulation on Direct Current GIL Insulators Under Different Dominant Mechanisms Considering Surface Trapping Effect

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