直流GIS/GIL中驱赶电极与微粒陷阱的协同抑制作用及优化设计方法

doi:10.19595/j.cnki.1000-6753.tces.220658

摘要
图/表
参考文献
相关文章 (1)

全文: PDF (4711 KB) HTML
输出: BibTeX | EndNote (RIS)

摘要

直流气体绝缘组合电器和封闭输电线路中的运动金属微粒是造成绝缘故障的重要原因,采用驱赶电极可使微粒朝远离绝缘子的方向运动,与微粒陷阱配合使用可显著提高微粒的捕获概率。该文首先建立微粒与驱赶电极的碰撞动力学模型,发现受驱赶电极作用的微粒落点具有强集中性,进而考虑电场畸变特性与微粒落点分布对驱赶电极的结构参数进行了优化设计。进一步以微粒陷阱的捕获概率优化为目标,提出驱赶电极与微粒陷阱的协同布置策略,相较于无驱赶电极时,陷阱布置在驱赶电极下微粒集中落点位置时的捕获概率提升了20 %。同时,考虑驱赶电极对陷阱中微粒入射角的影响,提出驱赶电极与微粒陷阱结构参数的协同优化方法,增加了微粒在陷阱内碰撞次数,提高了微粒陷阱的捕获概率。具体结果表明,当驱赶电极倾角为8 °、陷阱倾角为50 °时,微粒陷阱的捕获概率最高,可达69.8 %。通过搭建包含驱赶电极与微粒陷阱的实验平台,验证了协同布置策略与参数优化方法的有效性。所提出的驱赶电极与微粒陷阱的协同设计方法适用于不同尺寸的直流气体绝缘装备,可为实际工程的微粒有效抑制提供指导。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	胡智莹
	耿秋钰
	魏来
	常亚楠
	李庆民

关键词 ：驱赶电极, 微粒陷阱, 协同抑制, 优化设计方法

Abstract：

Moving metal particles in DC gas-insulated composite appliances and closed transmission lines is the main cause of insulation failure. The driving electrode can make particles move away from the insulator, and the capture probability of particle traps can be significantly improved when used together with driving electrodes.
This paper established the dynamic collision model between the particle and the driving electrode. It was found that the particles affected by the driving electrode have strong concentrations. Then, the structural parameters of the driving electrode were optimized by considering the electric field distortion characteristics and the distribution of the particles, as shown in Fig.A1. For the scaled model of gas-insulated equipment with a conductor radius of 20 mm and an internal shell radius of 60 mm, when the length of the convex part is set to 8 mm, the electrode dip angle is 6 °~10 °, and the fillet radius is 3 mm. The initial placement position of the particles is distributed away from the insulator side, which can effectively suppress the movement of the particles to the insulator.

Furthermore, aiming at optimizing particle trap capture probability, a synergistic arrangement strategy of the driving electrode and the particle trap was proposed, as shown in Fig.A2. The driving electrode is sleeved on the high-voltage electrode and arranged near the insulator. The particle trap is arranged at the concentrated drop point of the particles under the driving electrode. Compared with the case without the driving electrode, the capture probability of the trap at the location of particle concentration under the driving electrode is increased by 20 %.

At the same time, considering the effect of the driving electrode on the incident angle of the particles in the trap, a synergistic optimization method of the driving electrode and the structural parameters of the particle trap was presented, which increased the collision times of particles in the trap and improved the capture probability of the particle trap. The results show that when the angle of the drive electrode is 8 ° and the angle of the trap is 50 °, and the capture probability of the particle trap is optimum, reaching 69.8 %. An experimental platform containing driving electrodes and particle traps was built to verify the effectiveness of the cooperative arrangement strategy and parameter optimization method.
Based on an actual UHV AC GIL, the versatility of the proposed method for different voltage-level equipment was discussed. Even though the particle motion characteristics at different voltages are numerically different, the motion law of the particles after collision with the driving electrode is the same for different voltages. Therefore, the proposed synergistic optimization method of driving electrode and particle trap is suitable for different sizes of DC gas-insulated equipment and can guide effective particle suppression in practical engineering.

Key words： Driving electrode particle trap synergistic inhibition optimal design method

收稿日期: 2022-04-22

PACS:

TM851

通讯作者: 李庆民男,1968年生,教授,博士生导师,研究方向为高电压与绝缘技术、放电物理。E-mail:lqmeee@ncepu.edu.cn

作者简介: 胡智莹女,1999年生,硕士研究生,研究方向为GIL金属微粒运动与抑制。E-mail: huzhiyingnuli@163.com

引用本文:

胡智莹, 耿秋钰, 魏来, 常亚楠, 李庆民. 直流GIS/GIL中驱赶电极与微粒陷阱的协同抑制作用及优化设计方法[J]. 电工技术学报, 2023, 38(12): 3338-3349. Hu Zhiying, Geng Qiuyu, Wei Lai, Chang Yanan, Li Qingmin. Synergistic Inhibitory Effect and Optimal Design Method of Driving Electrode and Particle Trap in DC GIS/GIL. Transactions of China Electrotechnical Society, 2023, 38(12): 3338-3349.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.220658 https://dgjsxb.ces-transaction.com/CN/Y2023/V38/I12/3338

[1] 张连根, 路士杰, 李成榕, 等. GIS中线形和球形金属微粒的运动行为和危害性[J]. 电工技术学报, 2019, 34(20): 4217-4225.
Zhang Liangen, Lu Shijie, Li Chengrong, et al.Motor behavior and hazard of spherical and linear particle in gas insulated switchgear[J]. Transactions of China Electrotechnical Society, 2019, 34(20): 4217-4225.
[2] Volpov E.Electric field modeling and field formation mechanism in HVDC SF₆ gas insulated systems[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2003, 10(2): 204-215.
[3] Magier T, Tenzer M, Koch H.Direct current gas-insulated transmission lines[J]. IEEE Transactions on Power Delivery, 2018, 33(1): 440-446.
[4] 程涵, 魏威, Bilallqbal Ayubi, 等. 直流GIL中线形金属微粒电动力学行为研究[J]. 电工技术学报, 2021, 36(24): 5283-5293.
Cheng Han, Wei Wei, Ayubi B, et al.Study on the electrodynamic behavior of linear metal particles in DC gas insulated transmission line[J]. Transactions of China Electrotechnical Society, 2021, 36(24): 5283-5293.
[5] 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.
[6] 黄旭炜, 倪潇茹, 王健, 等. 苯硫醚聚酰亚胺电极覆膜材料合成及直流应力下对金属微粒运动特性的抑制作用[J]. 电工技术学报, 2018, 33(20): 4712-4721.
Huang Xuwei, Ni Xiaoru, Wang Jian, et al.Synthesis of phenyl-thioether polyimide as the electrode coating film and its suppression effect on motion behavior of the metal particles under DC stresses[J]. Transactions of China Electrotechnical Society, 2018, 33(20): 4712-4721.
[7] 李杰, 李晓昂, 吕玉芳, 等. 正弦振动激励下GIS内自由金属微粒运动特性[J]. 电工技术学报, 2021, 36(21): 4580-4589, 4597.
Li Jie, Li Xiaoang, Lü Yufang, et al.Motion chara-cteristics of free metal particles in GIS under sinusoidal vibration[J]. Transactions of China Elec-trotechnical Society, 2021, 36(21): 4580-4589, 4597.
[8] Techaumnat B, Huynh V Q, Hidaka K.Numerical analysis and experiments on the electromechanical behavior of wired-shape conducting particles[J]. IEEE Transactions on Magnetics, 2018, 54(3): 1-5.
[9] 范建斌, 李鹏, 李金忠, 等. ±800kV特高压直流GIL关键技术研究[J]. 中国电机工程学报, 2008, 28(13): 1-7.
Fan Jianbin, Li Peng, Li Jinzhong, et al.Study on key technology of ±800kV UHVDC GIL[J]. Proceedings of the CSEE, 2008, 28(13): 1-7.
[10] Wang Jian, Hu Qi, Chang Yanan, et al.Metal particle contamination in gas-insulated switchgears/gas-insulated transmission lines[J]. CSEE Journal of Power and Energy Systems, 2019, 7(5): 1011-1025.
[11] Morcos M M, Ward S A, Anis H, et al.Insulation integrity of GIS/GITL systems and management of particle contamination[J]. IEEE Electrical Insulation Magazine, 2000, 16(5): 25-37.
[12] 詹振宇, 宋曼青, 律方成, 等. 交流环保GIL中微粒运动规律及陷阱抑制措施研究[J]. 中国电机工程学报, 2019, 39(增刊1): 278-286.
Zhan Zhenyu, Song Manqing, Lü Fangcheng, et al.Study on particle movement and trap suppression in AC environmentally friendly GIL[J]. Proceedings of the CSEE, 2019, 39(S1): 278-286.
[13] 李伯涛, 王健, 张圣富, 等. 直流GIL中附着导电微粒对绝缘子表面电荷积聚特性的影响分析[J]. 高压电器, 2017, 53(7): 80-86.
Li Botao, Wang Jian, Zhang Shengfu, et al.Influence of the DC-GIL conductive adherent particles on the charge accumulation of insulator surface[J]. High Voltage Apparatus, 2017, 53(7): 80-86.
[14] Berg T, Juhre K, Fedtke T, et al.Specific chara-cteristics of particle traps for application in DC gas-insulated transmission lines (DC GIL)[C]//VDE High Voltage Technology 2020, ETG-Symposium, Online, 2020: 1-8.
[15] 常亚楠, 王健, 李庆民, 等. 交直流气体绝缘管道输电装备微粒污染治理措施研究进展[J]. 高压电器, 2021, 57(10): 91-100, 110.
Chang Yanan, Wang Jian, Li Qingmin, et al.Research progress of particle contamination suppression measures in AC and DC gas-insulated transmission equipment[J]. High Voltage Apparatus, 2021, 57(10): 91-100, 110.
[16] Zhan Zhenyu, Wang Dong, Xie Jun, et al.Motion characteristics of metal powder particles in AC GIL and its trap design[J]. IEEE Access, 2021, 9: 68619-68628.
[17] 刘鹏, 李智凯, 田汇冬, 等. 直流电压下气体绝缘输电线路中微粒运动特性研究及微粒陷阱效能分析[J]. 中国电机工程学报, 2022, 42(15): 5740-5751.
Liu Peng, Li Zhikai, Tian Huidong, et al.Research on motion characteristics of metal particles and capture efficiency of particle traps in gas insulated trans-mission lines under DC voltage[J]. Proceedings of the CSEE, 2022, 42(15): 5740-5751.
[18] 王健, 常亚楠, 王靖瑞, 等. 基于捕捉效用分析的直流GIL微粒陷阱设计与参数优化[J]. 中国电机工程学报, 2020, 40(15): 5050-5061.
Wang Jian, Chang Yanan, Wang Jingrui, et al.Design and optimization of particle traps in DC GIL based on the capture effect analysis[J]. Proceedings of the CSEE, 2020, 40(15): 5050-5061.
[19] Khan Y, Okabe S, Suehiro J, et al.Proposal for new particle deactivation methods in GIS[J]. IEEE Transa-ctions on Dielectrics and Electrical Insulation, 2005, 12(1): 147-157.
[20] 陈有兴. 天然沙颗粒—床碰撞起跃特性的实验测量研究[D]. 兰州: 兰州大学, 2016.
[21] 孙继星, 陈维江, 李志兵, 等. 直流电场下运动金属微粒的带电估算与碰撞分析[J]. 高电压技术, 2018, 44(3): 779-786.
Sun Jixing, Chen Weijiang, Li Zhibing, et al.Charge estimation and impact analysis of moving metal particle under DC electric field[J]. High Voltage Engineering, 2018, 44(3): 779-786.
[22] 葛藤, 贾智宏, 周克栋. 钢球和刚性平面弹塑性正碰撞恢复系数研究[J]. 工程力学, 2008, 25(6): 209-213.
Ge Teng, Jia Zhihong, Zhou Kedong.Research on elastoplastic normal impact of steel spheres against a rigid plane[J]. Engineering Mechanics, 2008, 25(6): 209-213.
[23] 鲁加明, 曹伟伟, 周振华. 550kV GIL母线的结构设计[J]. 电气技术, 2015, 16(9): 59-63.
Lu Jiaming, Cao Weiwei, Zhou Zhenhua.The structural design of 550kV GIL bus[J]. Electrical Engineering, 2015, 16(9): 59-63.
[24] 黎斌. SF6高压电器设计[M]. 4版. 北京: 机械工业出版社, 2015.
[25] 李鹏, 李志兵, 孙倩, 等. 特高压气体绝缘金属封闭输电线路绝缘设计[J]. 电网技术, 2015, 39(11): 3305-3312.
Li Peng, Li Zhibing, Sun Qian, et al.Research on insulation design of UHV gas-insulated metal-enclosed transmission line[J]. Power System Tech-nology, 2015, 39(11): 3305-3312.