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Energy supply device from low voltage to high voltage

A low-voltage energy supply technology, which is applied in the field of low-voltage to high-voltage energy supply devices, can solve problems such as control or energy storage power supply potential differences, and achieve efficient energy supply, high reliability, and simple structure.

Inactive Publication Date: 2016-02-17
NR ELECTRIC CO LTD +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-voltage to high-voltage energy supply device. The device utilizes the isolation transformer technology, which solves the potential difference between some control or energy storage power supplies in the current high-voltage transmission link and adjacent high-voltage objects. It is of great significance to improve the operation stability of high voltage transmission system

Method used

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  • Energy supply device from low voltage to high voltage

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Embodiment Construction

[0017] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, it is a preferred embodiment of a low-voltage to high-voltage energy supply device provided by the present invention, which consists of n (n≥2) isolation transformer subunits (5) connected in series and placed in a group of insulating bushings (4) in composition. Among them, 1-isolation transformer, 2-voltage equalizing resistor, 3-voltage equalizing capacitor, 4-insulating bushing, 5-isolation transformer subunit, 6-high voltage busbar, 7-energy supply load.

[0019] The isolation transformer subunit (5) of the present invention is composed of an isolation transformer (1), a voltage equalizing resistor (2) and a voltage equalizing capacitor (3), wherein the voltage equalizing resistor (2) or the voltage equalizing capacitor (3) is not necessary , can be canceled depending on the actual situation. For ex...

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Abstract

An energy supply device from low voltage to high voltage mainly comprises n (n is more than or equal to 2) isolation transformer subunits (5) and an isolation sleeve (4), wherein the n (n is more than or equal to 2) isolation transformer subunits (5) are connected in series and then are placed in the closed insulation sleeve (4) filled with an insulation medium. By the energy supply device, energy can be supplied from low voltage to high voltage, the energy supply device is simple in structure and is easy to implement, the problem of insulation between an energy supply load and the high voltage is solved, and the power supply reliability is improved.

Description

technical field [0001] The invention belongs to the field of high-voltage power transmission, and in particular relates to a low-voltage to high-voltage energy supply device. Background technique [0002] In the link of high-voltage AC and DC transmission, some low-voltage control or energy storage power supplies have a high potential difference with the adjacent high-voltage charged body, and insulation treatment is required. If the potential for controlling the energy storage voltage and the like can be raised to the same potential as that of the adjacent charged body, the potential difference problem will be effectively solved. For example, in the application of a high-voltage switch with multiple fractures in series, if the potential difference between the operating mechanism and the fracture is isolated by ordinary insulating materials, the operating mechanism will be bulky and heavy, which is not conducive to the design of the operating mechanism. Low-voltage control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/12
Inventor 吕玮刘彬方太勋黄德祥石亲民杨浩王宇杨兵石巍
Owner NR ELECTRIC CO LTD
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