Research on Safe Patrol Distance of Helicopter to 750 kV AC Double-circuit Transmission Line on the Same Tower

PAN Junwen; LUO Richeng; TANG Xiangsheng; PAN Qianwen; ZOU Ming; WU Dong

doi:10.13296/j.1001-1609.hva.2017.09.022

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Research on Safe Patrol Distance of Helicopter to 750 kV AC Double-circuit Transmission Line on the Same Tower

更新时间：2025-04-26

- Research on Safe Patrol Distance of Helicopter to 750 kV AC Double-circuit Transmission Line on the Same Tower
- High VoltageApparatus Vol. 53, Issue 9, Pages: 130-136+142(2017)
- 作者机构：
  
  长沙理工大学电气与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.09.022
  CLC： TM75
- Published：2017
- 稿件说明：
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[1]潘俊文,罗日成,唐祥盛,潘茜雯,邹明,吴东.直升机巡视750 kV同塔双回交流输电线路的安全作业距离研究[J].高压电器,2017,53(09):130-136+142.

PAN Junwen, LUO Richeng, TANG Xiangsheng, et al. Research on Safe Patrol Distance of Helicopter to 750 kV AC Double-circuit Transmission Line on the Same Tower[J]. High voltageapparatus, 2017, 53(9): 130-136+142.
[1]潘俊文,罗日成,唐祥盛,潘茜雯,邹明,吴东.直升机巡视750 kV同塔双回交流输电线路的安全作业距离研究[J].高压电器,2017,53(09):130-136+142. DOI： 10.13296/j.1001-1609.hva.2017.09.022.

PAN Junwen, LUO Richeng, TANG Xiangsheng, et al. Research on Safe Patrol Distance of Helicopter to 750 kV AC Double-circuit Transmission Line on the Same Tower[J]. High voltageapparatus, 2017, 53(9): 130-136+142. DOI： 10.13296/j.1001-1609.hva.2017.09.022.

摘要

安全距离的确定是直升机巡线时作业人员和设备安全的有效保证。文中以某750 kV同塔双回输电线路为研究对象

利用Ansoft软件建立了直升机巡线模型

计算分析了无直升机、直升机在档距中央和直升机在杆塔附近3种工况下导线或直升机周围的电场、电势分布。计算结果表明:输电线路周围空间同一位置处的电场、电势随着电角度的增大近似余弦规律变化;随着直升机—导线间距的增大

直升机周围的电场、电势呈指数规律衰减;平行线路飞行方式下

直升机在档距中央巡线的最小安全距离为23 m左右

直升机在杆塔附近巡线的最小安全距离为13 m左右。

Abstract

The determination of safe distance in helicopter patrol power line is the assurance for operators and stuffs. A patrolling transmission line model of helicopter is established with the software Ansoft for a750 kV double-circuit transmission line on the same tower. The electrical fields and potential distributions near the transmission line and the helicopter are calculated with the model in three conditions

no helicopter exists

the helicopter is in the middle of span

and the helicopter is near the tower. The calculation result shows that:（1） the electric field and potential at same location around the transmission line changes following approximate cosine law with the increase of electric angle;（2） with the increase in the distance between helicopter and transmission line

the electric field and potential around the helicopter attenuate exponentially;（3）when the helicopter patrols in parallel with the transmission line

the minimum safe distance is about 23 m if it is in the middle of span

and the minimum safe distance becomes about13 m if it is near the tower.

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