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Overvoltage protection device and preparation method thereof

A protector and overvoltage technology, which is applied in the direction of emergency protection circuit devices, emergency protection circuit devices, electrical components, etc. for limiting overcurrent/overvoltage, and can solve the problem of inability to protect electrical equipment and effectively limit phase and Phase overvoltage, lightning arrester does not have the function of arc suppression, etc., to achieve the effect of protection safety

Inactive Publication Date: 2012-01-04
阳城国际发电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, power plants, substations, and switchgears all use lightning arresters as protective devices, but the lightning arresters are not sensitive enough, and cannot absorb and release the generated energy in time when high pressure and ultra-high pressure are generated in the atmosphere, which will affect power equipment. Normal operation, reduce the service life of electrical equipment
At the same time, the existing lightning arresters do not have arc suppression function, cannot effectively limit the overvoltage between phases and between phases and ground, and cannot provide good protection for electrical equipment

Method used

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  • Overvoltage protection device and preparation method thereof
  • Overvoltage protection device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: (1) Dry the zinc oxide resistors at a temperature of 80°C and a drying time of 10 hours;

[0031] (2) Configure the first resistor piece A, the second resistor piece B, the third resistor piece C and the discharge device: use a dried 42x17kV zinc oxide resistor and two 42x30kV aluminum electrodes in series. The first resistor piece A is formed by winding it with dipped glass fiber yarn without weft tape. Among them, a 42x17kV zinc oxide resistor piece is connected in series between two pieces of 42x30kV aluminum electrode; the second resistor piece B and the first The configuration process of the three resistors C is exactly the same as that of the first resistor A; a 9.1kV zinc oxide resistor is connected in series with an 11.3kV discharge gap, and a fifth resistor R5 is connected in parallel at both ends of the discharge gap The series circuit formed by the capacitor C1 is configured as a discharge device;

[0032] (3) Drying and finalizing the configured fir...

Embodiment 2

[0037] Example 2: (1) Dry the zinc oxide resistor strip at a temperature of 100°C and a drying time of 9 hours;

[0038] (2) Configure the first resistor piece A, the second resistor piece B, the third resistor piece C and the discharge device: use a dried 42x17kV zinc oxide resistor piece in series with two 42x30kV aluminum electrodes The first resistor piece A is formed by winding the dipped glass fiber yarn without weft tape, in which a 42x17kV zinc oxide resistor piece is connected in series between two pieces of 42x30kV aluminum electrode; the second resistor piece B and the third The configuration process of resistor chip C is exactly the same as that of the first resistor chip A; a 9.1kV zinc oxide resistor is connected in series with an 11.4kV discharge gap, and a fifth resistor R5 is connected in parallel at both ends of the discharge gap. The series circuit formed by the capacitor C1 is configured as a discharge device;

[0039] (3) Drying and finalizing the configured...

Embodiment 3

[0044] Embodiment 3: (1) Dry the zinc oxide resistor strip at a drying temperature of 120°C and a drying time of 8 hours;

[0045] (2) Configure the first resistor piece A, the second resistor piece B, the third resistor piece C and the discharge device: use a dried 42x17kV zinc oxide resistor in series with two 42x30kV aluminum electrodes The first resistor piece A is formed by winding the dipped glass fiber yarn without weft tape, in which the ?42x17kV zinc oxide resistor piece is connected in series between two ?42x30kV aluminum electrodes; the second resistor piece B and the third The configuration process of resistor chip C is exactly the same as that of the first resistor chip A; one 9.1kV zinc oxide resistor is connected in series with a 11.5kV discharge gap, and a fifth resistor R5 is connected in parallel at both ends of the discharge gap. The series circuit formed by the capacitor C1 configures the discharge device;

[0046] (3) Drying and finalizing the configured fir...

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Abstract

The invention relates to the overvoltage protection field, and concretely relates to an overvoltage protection device and a preparation method thereof. The overvoltage protection device comprises a first resistance card, a second resistance card, a third resistance card, a discharging apparatus and a pedestal. One ends of the first resistance card, the second resistance card, and the third resistance card are respectively used for connecting with a three phase power supply, other ends of the first resistance card, the second resistance card, and the third resistance card are arranged in the pedestal, main bodies of the first resistance card, the second resistance card, and the third resistance card are outside the pedestal, and the main bodies are arranged at one end of the pedestal and are grounded through a series electrical discharge apparatus. The overvoltage protection device has the characteristics of simple structure, sensitive reaction, and capability of timely adsorbing energy generated by atmosphere overvoltage and certain arc extinguishing effect, and protects an overvoltage protection device of electrical equipment effectively.

Description

Technical field [0001] The invention relates to the field of overvoltage protection, in particular to an overvoltage protector and a preparation method thereof. Background technique [0002] At present, power plants, substations, and switch cabinets all use lightning arresters as protection devices, but the lightning arresters are not sensitive enough to absorb and release the generated energy in time when high pressure and ultra-high pressure are generated in the atmosphere, which will affect power equipment The normal operation of the equipment reduces the service life of electrical equipment. At the same time, the existing lightning arrester does not have an arc suppression effect, cannot effectively limit the overvoltage between phases and between phases and ground, and cannot provide good protection for electrical equipment. Summary of the invention [0003] The purpose of the present invention is to provide an overvoltage protector that is sensitive, can absorb the energy g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 许留柱
Owner 阳城国际发电有限责任公司
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