空心电抗器投切下的电场和电动力分析

doi:10.16180/j.cnki.issn1007-7820.2019.03.010

Abstract

Abstract:

For the influence of frequent switching operations on the insulation of dry-type air-core reactors, in order to ensure the safe and stable operation of the power system, the simulation and experimental analysis methods were applied to analyze the electric field and electrodynamics force of the reactor under steady state and switching transient state. The distribution and numerical changes of electric and electrodynamics force were further compared under the two states through the establishment of simulation model of Maxwell’s air-core reactor. The results showed that the electric field strength and electrodynamics force under the switching operation were significantly increased compared with that under the steady state operation, and the insulation thickness needed to reach 0.0325mm to constrain the radial electrodynamics force generated during the switching process. The transient switching process imposed a higher requirement for the insulation thickness of the reactor, which provided a certain theoretical basis for the industrial design of the air-core reactor.

Key words: dry-type air-core reactor, electric field distribution, finite element method, electrodynamics force, coupling, insulation performance

CLC Number:

TP301

WANG Yang,LI Yingna,LI Chuan. Analysis on Electric Field and Electrodynamics Force of Switching Air-core Reactor[J].Electronic Science and Technology, 2019, 32(3): 47-52.

Figures/Tables 15

Figure 1.

Table1

Structural parameters of hollow shunt reactor"

参数	数值	参数	数值
额定电压/kV	34.5/ $3$	气道宽度/mm	35
额定电流/A	1 004	总体高度/mm	1900
额定容量/kVar	20 000	层绝缘厚度/mm	0.4
实测电抗/Ω	20.12	支路数	42
最高运行电压/kV	40.5/ $3$	包封数	11

Table1

Table2

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Table3

Table4

Table5

Figure 7.

Figure 8.

Figure 9.

Table6

References 16

[1]	李岩, 张振海, 朱立勋 , 等. 干式空心电抗器的计算与设计[J]. 变压器, 2013,50(10):1-6.
	Li Yan, Zhang Zhenhai, Zhu Lixun , et al. Calculation and design of dry-type air-core reactor[J]. Transformer, 2013,50(10):1-6.
[2]	蒲永红, 张婷 . 变电站电压无功的优化控制仿真[J].计算机仿真, 2014(5):139-142.
	Pu Yonghong, Zhang Ting . Optimal control simulation of voltage and reactive power for substation[J].Computer Simulation, 2014(5):139-142.
[3]	聂喜玲, 黎大健, 赵坚 . 干式空心电抗器损坏原因分析及对策[J]. 广西电力, 2013,36(2):29-31.
	Nie Xiling, Li Dajian, Zhao Jian . Analysis and countermeasures of dry type air core reactor damage[J]. Guangxi Electric Power, 2013,36(2):29-31.
[4]	李飞舟, 向莉, 刘全峰 , 等. 避免户外干式空心电抗器发生故障的措施[J]. 电力电容器与无功补偿, 2013,34(2):58-61.
	Li Feizhou, Xiang Li, Liu Quanfeng , et al. Fault prevention measures of outdoor dry-type air-core reactor[J]. Power Capacitor & Reactive Power Compensation, 2013,34(2):58-61.
[5]	李德超 . 干式空心电抗器故障原因分析及处理措施[J]. 电力电容器与无功补偿, 2014,35(6):86-90.
	Li Dechao . Fault analysis and processing measures of the dry-type air-core reactor[J]. Power Capacitor & Reactive Power Compensation, 2014,35(6):86-90.
[6]	姚远航 . 干式空心电抗器匝间绝缘局部放电特性的研究[D]. 哈尔滨:哈尔滨理工大学, 2017.
	Yao Yuanhang . Study on partial discharge characteristics of turn-to-turn insulation of dry-type air core reactor[D]. Harbin:Harbin University of Science and Technology, 2017.
[7]	赵延山 . 空心电抗器电场及电动力问题分析[D]. 济南:山东大学, 2012.
	Zhao Yanshan . Analysis of electric field and electrodynamics force of hollow reactor[D]. Jinan: Shandong University, 2012.
[8]	徐菁, 李飞舟, 王钰 , 等. 空心电抗器电场强度分布计算与均压环设计[J]. 武汉大学学报:工学版, 2013,46(2):228-231.
	Xu Jing, Li Feizhou, Wang Yu , et al. Electric field distribution calculation and shielding ring design of air core reactor[J]. Journal of Wuhan University:Engineering Edition, 2013,46(2):228-231.
[9]	李爽 . 干式空心并联电抗器磁场与电动力研究[D]. 哈尔滨:哈尔滨理工大学, 2015.
	Li Shuang . Calculation of magnetic field and electromagnetic force of the dry-type air-core shunt reactor[D]. Harbin: Harbin University of Science and Technology, 2015.
[10]	吴彦霖, 谭向宇, 马仪 , 等. 电场分布及匝数偏差暂态电动力对并联电抗器影响[J]. 云南电力技术, 2016,44(4):94-99.
	Wu Yanlin, Tan Xiangyu, Ma Yi , et al. Study of the influence of electric field distribution and turns deviation transient electrodynamic force on dry-type air-core shunt reactor[J]. Yunnan Electric Power, 2016,44(4):94-99.
[11]	陈泽鑫 . 关于干式空心并联电抗器烧损问题的原因分析[J]. 电网技术, 2015(11):32-36.
	Chen Zexin . Analysis on the cause of burning loss of dry type hollow shunt reactor[J].Power System Technology, 2015(11):32-36.
[12]	汪玉凤, 王静, 许晓禹 , 等. 基于相控投切技术的无功补偿装置[J]. 计算机系统应用, 2013,22(1):178-181.
	Wang Yufeng, Wang Jing, Xu Xiaoyu , et al. Reactive power compensation device based on phase-controlled switching technology[J]. Computer Systems & Applications, 2013,22(1):178-181.
[13]	孙晓武, 施火泉 . 新型谐波抑制及无功补偿装置建模与仿真[J]. 微计算机信息, 2010,26(19):147-149.
	Sun Xiaowu, Shi Huoquan . Modeling and simulation of new type device for harmonic suppression and reactive-power compensation[J]. MicroComputer Information, 2010,26(19):147-149.
[14]	夏红光, 陆丹丹 . 真空断路器投切35 kV电抗器相关问题研究[J]. 浙江电力, 2017,36(6):26-29.
	Xia Hongguang, Lu Dandan . Study on vacuum circuit breakers switching with 35 kV reactors[J]. Zhejiang Electric Power, 2017,36(6):26-29.
[15]	魏敏 . 一起35kV空心电抗器故障原因分析及预防措施[J]. 电气技术, 2017,18(3):143-147.
	Wei Min . Failure analysis and preventive measures of the 35 kV core reactor[J]. Electrical Engineering, 2017,18(3):143-147.
[16]	施纪栋 . 真空断路器投切35kV并联电抗器的过电压仿真研究[D]. 杭州:浙江大学, 2014.
	Shi Jidong . Research on overvoltage of using vacuum circuit breaker to switch 35 kV shunt reactors[D]. Hangzhou:Zhejiang University, 2014.

材料	拉伸强度/MPa	密度/kg·m^-3	泊松比
环氧树脂	300~700	1 100~1 400	0.33
玻璃纤维	3 430	2 540	0.22

分压器	测量位置	示波器输入端	测量内容
D₁	电抗器首端	1	电抗器首端电压(稳态)
		2	电抗器首端电压(暂态)
		3	电抗器两端的差分信号(稳态)
D₂	电抗器尾端	4	电抗器两端的差分信号(暂态)
		5	电抗器尾端(稳态)
		6	电抗器尾端(暂态)

序号	首端对地电压峰值/kV	尾端对地电压峰值/kV	两端电压峰值/kV
1	40.10	20.44	49.89
2	30.17	12.53	40.42
3	38.81	19.63	48.65
4	34.05	25.38	46.67
5	38.29	32.97	53.84
6	22.83	17.81	24.69
7	24.15	19.63	26.53
8	22.81	23.85	24.52
9	30.16	10.46	33.85
10	22.92	26.43	24.91

序号	首端对地电压峰值/kV	尾端对地电压峰值/kV	两端电压峰值/kV
1	42.52	23.72	25.85
2	41.87	24.08	25.37
3	52.27	24.54	59.84
4	40.82	23.11	24.81
5	36.38	22.49	40.82
6	40.53	22.81	24.52
7	41.86	24.12	25.31
8	41.40	23.02	24.76
9	22.80	21.87	25.05
10	40.85	23.21	24.79

运行状态	稳态过程		投切暂态过程
运行状态	径向	轴向	径向	轴向
最大电动力力出现位置	最内层中心高度	第10包封底端	最内层中心高度	第10包封底端
最大电动力力出现时刻/s	——	——	0.01	0.01
最大电动力数值N/匝	6.42	9.38	24.38	36.63
导线受力面积 /mm²	4.91	3.5×10⁴	4.91	3.5×10⁴
压强核算/MPa	1.31	2.68×10^-4	4.97	1.04×10^-3
绝缘厚度最小值/mm	0.008 6	——	0.032 5	——

Analysis on Electric Field and Electrodynamics Force of Switching Air-core Reactor

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