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Transformer non-electrical quantity protection device and protection method

A non-electrical protection and protection device technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems affecting the safe and stable operation of the power system, protection malfunction, etc.

Inactive Publication Date: 2012-04-04
国网运行有限公司秦皇岛超高压管理处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the vast majority of transformer non-electrical protection adopts the design of a single set of contacts with a single set of devices, and there are many cases of protection malfunction due to moisture, contact failures, etc., which seriously affects the safe and stable operation of the power system

Method used

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  • Transformer non-electrical quantity protection device and protection method
  • Transformer non-electrical quantity protection device and protection method
  • Transformer non-electrical quantity protection device and protection method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A transformer non-electricity protection device, including a transformer non-electricity protection body device, such as a heavy gas, oil flow relay and the like. The transformer non-electricity protection body device is equipped with three pairs of trip contacts: the first trip contact 1, the second trip contact 2 and the third trip contact 3. The first trip contact 1, the second trip contact 2, and the third trip contact 3 are respectively connected to three sets of non-electricity protection devices without built-in software: the first non-electricity protection device A, the second non-electricity protection device B, the third non-electricity protection device Non-electricity protection device C;

[0024] The first non-electricity protection device A is connected to the first two-out-of-three redundant module a and the second two-out of three redundant module b,

[0025] The second non-electricity protection device B is connected to the first two-out-of-three redu...

Embodiment 2

[0033] The first tripping contact 1, the second tripping contact 2, and the third tripping contact 3 are connected to a contact resetting expansion device, and the contact resetting expansion device and the built-in software respectively realize the first protection device ① and the second protection device of three-out-of-two logic ②Connection, the contact reset expansion device is only used for contact reset, any one trip contact is reset into two, respectively sent to the first protection device ①, the second protection device ②, the first protection device ① or the second protection device The protection device ② uses the built-in software to realize the logic of "two out of three" input by each main body device, and then summarizes it as a trip outlet to realize the logic of "out of three" at the entrance. possible to move.

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Abstract

A transformer non-electrical quantity protection device comprises a transformer non-electrical quantity protection body device, wherein the transformer non-electrical quantity protection body device is provided with a first trip contact, a second trip contact and a third trip contact; the first trip contact, the second trip contact and the third trip contact are connected to a first non-electrical quantity protection device, a second non-electrical quantity protection device and a third non-electrical quantity protection device, respectively; the first non-electrical quantity protection device is connected to a first two-out-of-three redundance module and a second two-out-of-three redundance module; the second non-electrical quantity protection device is connected to the first two-out-of-three redundance module and the second two-out-of-three redundance module; the third non-electrical quantity protection device is connected to the first two-out-of-three redundance module and the second two-out-of-three redundance module; and the first two-out-of-three redundance module and the second two-out-of-three redundance module are connected to a first trip circuit and a second trip circuit, respectively. The transformer non-electrical quantity protection device is capable of preventing either protection false tripping caused by a single-contact fault or failure to operate for operation in case of a fault of a single module.

Description

technical field [0001] The invention relates to a transformer non-electrical protection device and a protection method, and relates to the field of relay protection. Background technique [0002] At present, the vast majority of transformer non-electrical protection adopts the design of a single set of contacts with a single set of devices. There are many cases of protection malfunctions due to moisture, contact failures, etc., which seriously affect the safe and stable operation of the power system. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a transformer non-electricity protection device and protection method. The non-electricity protection body device is connected with a two-out-of-three redundant module, which can not only prevent protection malfunction caused by a single contact fault, but also prevent a single module from The protection refuses to operate in the event of a fault, which i...

Claims

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Application Information

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IPC IPC(8): H02H7/04
Inventor 田艳芳
Owner 国网运行有限公司秦皇岛超高压管理处
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