500 kV交流线路对并行±800 kV直流线路带电作业人员安全防护的影响

doi:10.11930/j.issn.1004-9649.202007015

中国电力 ›› 2022, Vol. 55 ›› Issue (6): 128-136.DOI: 10.11930/j.issn.1004-9649.202007015

500 kV交流线路对并行±800 kV直流线路带电作业人员安全防护的影响

马爱清, 王洁, 毕永翔

上海电力大学电气工程学院，上海　200090

收稿日期:2020-07-13 修回日期:2020-12-04 出版日期:2022-06-28 发布日期:2022-06-18
作者简介:马爱清(1975—)，女，博士，教授，从事高压电器设备结构优化和绝缘监测方面研究，E-mail：aqmab@sohu.com;王洁(1997—)，女，通信作者，硕士研究生，从事特高压输电线路带电作业保护研究，E-mail：1447464096@qq.com
基金资助:
上海市自然科学基金资助项目(19ZR1420600)；上海绿色能源并网工程技术研究中心(13DZ2251900)

Influence of 500 kV AC Lines on Safety Protection of Live Working Personnel in Parallel ±800 kV DC Lines

MA Aiqing, WANG Jie, BI Yongxiang

College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Received:2020-07-13 Revised:2020-12-04 Online:2022-06-28 Published:2022-06-18
Supported by:
This work is supported by Natural Science Foundation of Shanghai (No.19ZR1420600), Shanghai Engineering Research Center of Green Energy Grid-connected Technology (No.13DZ2251900)

摘要/Abstract

摘要： 为确保交流500 kV和直流±800 kV并行输电线路的安全稳定运行，利用三维有限元模型和电磁暂态模型对混合线路中超特高压直流输电线路带电作业安全防护进行相关研究。通过体表电场、转移电流以及暂态能量3个方面对安全防护进行分析，计算结果表明：作业人员体表电场随交流线路相位的变化而变化，作业人员越靠近特高压直流输电线路，交流输电线路对体表电场影响越明显；相对特高压直流输电线路独立架设，混合线路中带电作业人员体表电场、转移电流幅值有明显升高，暂态能量值升高相对较小；建议混合线路中作业人员身穿合适的屏蔽服和屏蔽手套在距离导线0.4~0.5 m位置时进行电位转移工作。

关键词: 超特高压交直流并行输电线路, 带电作业, 体表电场, 转移电流, 暂态能量

Abstract: In order to ensure the reliable operation of AC 500 kV and DC ±800 kV parallel transmission lines without power failure, the three-dimensional finite element model and electromagnetic transient model are used to study the safety protection of EHVAC and UHVDC transmission lines live working in hybrid lines. The safety protection is analyzed through the three aspects of body surface electric field, transfer current and transient energy. The results show that the worker's body surface electric field changes with the change of the phase of the AC line. The distance between the worker and the UHVDC transmission line is closer, the effect of the AC transmission line on the surface electric field is more obvious. Compared with the independent UHVDC transmission line, the worker's body surface electric field and transfer current amplitude in the mixed line have increased significantly, the transient energy value relatively has a small increase. In the hybrid line, it is recommended that the worker’s potential transfer work should be proceeded at a distance between 0.4 m to 0.5 m from the conductor with suitable screen clothes.

Key words: EHVAC and UHVDC parallel transmission line, live working, body surface electric field, transfer current, transient energy

马爱清, 王洁, 毕永翔. 500 kV交流线路对并行±800 kV直流线路带电作业人员安全防护的影响[J]. 中国电力, 2022, 55(6): 128-136.

MA Aiqing, WANG Jie, BI Yongxiang. Influence of 500 kV AC Lines on Safety Protection of Live Working Personnel in Parallel ±800 kV DC Lines[J]. Electric Power, 2022, 55(6): 128-136.

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500 kV交流线路对并行±800 kV直流线路带电作业人员安全防护的影响

Influence of 500 kV AC Lines on Safety Protection of Live Working Personnel in Parallel ±800 kV DC Lines

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500 kV交流线路对并行±800 kV直流线路带电作业人员安全防护的影响

Influence of 500 kV AC Lines on Safety Protection of Live Working Personnel in Parallel ±800 kV DC Lines

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