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High-voltage alternating electric field energy-acquiring circuit and self-excited power source

A high-voltage alternating electric field and energy-capacitor technology, applied in battery circuit devices, circuit devices, current collectors, etc., can solve problems such as difficulty in ensuring power supply stability, affecting power supply stability, and inability to work normally, and improve work efficiency. and insulation reliability, low power consumption, and the effect of improving the coupling coefficient

Inactive Publication Date: 2018-09-11
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0003] The transmission power supply method mainly transmits energy from the low-potential end to the high-potential end online measurement device through optical fiber or microwave. Its main disadvantages are low efficiency, high cost, and poor long-term working stability.
[0004] The technical solutions for independent energy harvesting mainly include battery power supply, CT coil power supply, solar energy and wind energy power supply. All of the above power harvesting methods have certain technical limitations. For example, the battery method needs to be replaced by regular power failure, and the CT type is affected by the load current , and the line cannot work normally when there is a power failure, there is a large power supply blind area, and it is difficult to guarantee the stability of the power supply; other methods are limited by natural conditions, which will also affect the stability of the power supply

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  • High-voltage alternating electric field energy-acquiring circuit and self-excited power source
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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0019] reference figure 1 The high-voltage alternating electric field energy-taking circuit of the present invention includes a high-potential conductor, an induction electrode-to-ground capacitance Cg, and an energy-taking capacitor C. One end of the energy-taking capacitor C is connected to the high-potential conductor, and the other end of the energy-taking capacitor C Ground through the capacitance Cg of the induction electrode to the ground; the high-potential conductor is a high-voltage bus or overhead wire.

[0020] When the energy taking capacitor C is connected in series with n levels, the total capacitance is 1 / n times that of the single capacitor. According to the voltage division relationship between the energy taking capacitor C and the equivalent leakage capacitance of the line, at this time, the value of the energy taking capacitor C The charging vo...

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Abstract

The present invention discloses a high-voltage alternating electric field energy-acquiring circuit and a self-excited power source. The high-voltage alternating electric field energy-acquiring circuitcomprises a high-potential conductor, an induction electrode ground capacitor and an energy-acquiring capacitor, one end of the energy-acquiring capacitor is connected with the high-potential conductor, and the other end of the energy-acquiring capacitor is earthed after passing through the induction electrode ground capacitor. The high-voltage alternating electric field energy-acquiring circuitand the self-excited power source can achieve stable energy-acquiring power supply.

Description

Technical field [0001] The invention belongs to the field of power system online monitoring, and relates to a high-voltage alternating electric field energy acquisition circuit and a self-excited power supply. Background technique [0002] With the development of smart grid online monitoring technology, when it is necessary to monitor the high-potential end equipment in the power system, how to solve the problem of power supply for the equipment at the monitoring front end has become a technical difficulty. The current power supply methods are divided into two types, including self-excited energy acquisition and transmission power supply. [0003] The transmission power supply method is mainly an online measuring device that transmits energy from the low potential end to the high potential end through optical fiber or microwave. The main disadvantages are low efficiency, high cost, and poor long-term stability. [0004] The technical solutions for autonomous energy extraction mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05H02J7/00
CPCH02J7/025H02J7/345H02J50/05
Inventor 翟小社宋政湘姚晓飞张伟
Owner XI AN JIAOTONG UNIV
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