Power Supply Technology of Low Power On-line Monitoring Sensor Based on Electric Field Induction

WANG Liming; LI Zong; MENG Xiaobo; MEI Hongwei; LI Jianchao

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Power Supply Technology of Low Power On-line Monitoring Sensor Based on Electric Field Induction

更新时间：2025-12-08

- Power Supply Technology of Low Power On-line Monitoring Sensor Based on Electric Field Induction
- Vol. 46, Issue 2, Pages: 538-545(2020)
- 作者机构：
  
  1. 清华大学深圳国际研究生院
  2. 南方电网科学研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：29 February 2020，
  
  Published：2020
- 稿件说明：
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WANG Liming, LI Zong, MENG Xiaobo, et al. Power Supply Technology of Low Power On-line Monitoring Sensor Based on Electric Field Induction[J]. 2020, 46(2): 538-545.
DOI：

WANG Liming, LI Zong, MENG Xiaobo, et al. Power Supply Technology of Low Power On-line Monitoring Sensor Based on Electric Field Induction[J]. 2020, 46(2): 538-545. DOI：

摘要

电场感应取能具有供电稳定、工程简单等独特优点

是一种颇具潜力的架空输电线路在线监测装置供电方式

制约该技术发展的关键是如何获得足够的功率。为了给输电线路低功率在线监测传感器提供安全、稳定的电能供应

对电场感应取能技术进行了研究。通过变压器的阻抗变换特性增大负载的等效阻抗

并在变压器二次侧并联补偿电容

使负载获得更大的取能功率。文中详细介绍了该电场感应供电技术的原理

并对有关影响因素如导线架设方式、极板安装位置、电容补偿特性等进行了分析。最后通过实验得到:当电源电压为50k V

耦合电容为14 pF

补偿电容为0.86 nF时

1 kΩ的负载能获得225 mW的功率。实验结果与理论分析相一致

验证了该电场感应供电技术的有效性。

Abstract

Electric field induction energy acquisition has the unique advantages of stable power supply and simple engineering. It is a potential power supply mode for on-line monitoring devices of overhead transmission lines. The key to the development of the technology is how to get enough power. In order to provide a safe and stable power supply for low power on-line monitoring sensors of transmission lines

we investigated the technology of electric field induction energy acquisition. The equivalent impedance of the load was increased by using the impedance transformation characteristics of the transformer

and the secondary side of the transformer was connected in parallel to compensate the capacitance

so that the load could obtain greater power. The principle of the electric field induction power supply technology was introduced in detail

and the influencing factors

such as wire erection mode

installation position of metal plate

and capacitance compensation characteristics

were analyzed. Finally

the experiments were conducted. The results show that when the power supply voltage is 50 kV

the coupling capacitance is 14 pF

and the compensation capacitance is 0.86 nF

a 225 mW power will be obtained under the load of 1 kΩ. The experimental results are consistent with the theoretical analysis

which verifies the effectiveness of the electric field induction power supply technology.

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