Separation Method and Influence Mechanism of Total Electric Field Under HVDC Transmission Line Considering Charged Dielectric

被引：0
|
作者：
Chen B. [1 ]
Lu T. [1 ]
Bai B. [1 ]
Wang D. [2 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing
[2] Key Laboratory of Regional Multi-energy System Integration and Control of Liaoning Province, Shenyang Institute of Engineering, Shenyang
来源：
| 2021年 / Chinese Society for Electrical Engineering卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Charged dielectric; Electric field component; High-voltage direct current (HVDC); Ion flow field;
D O I：
10.13334/j.0258-8013.pcsee.201427
中图分类号：
学科分类号：
摘要：
When high-voltage direct current (HVDC) transmission lines approach an agricultural greenhouse, the space charges generated by corona discharge accumulate on the dielectric film covering the greenhouse. The film charges have a distortion effect on the surrounding electric field. At present, the ion flow field considering the charged dielectric film has been studied experimentally, and some calculation methods have been proposed. However, little research has clearly revealed the influence mechanism of the charged dielectric on the electric field. This paper presents a source-based separation method for total electric fields. A calculation model for the dielectric film near 500kV HVDC overhead lines is established. Besides, electric field components under various film sizes are studied. The calculations show that the charge accumulated on the film is the main factor affecting the ground-level electric field near the greenhouse. Through the influence of the charged dielectric on the charge distribution, the influence mechanism of the charged dielectric on the electric field is explained. This paper provides guidance for the prevention of ground-level electric field when there are agricultural greenhouses near HVDC transmission lines. © 2021 Chin. Soc. for Elec. Eng.
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收藏
页码：2576 / 2583
页数：7
相关论文
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