On-site transformer protection system used for intelligent transformer substation

A transformer protection and intelligent substation technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as secondary cable electromagnetic interference, relay protection device malfunction, secondary equipment operation abnormality, etc., to solve the system is blocked , Improve reliability and high application value
CN102916394BInactive Publication Date: 2015-07-15XJ ELECTRIC +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XJ ELECTRIC
Publication Date
2015-07-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an on-site transformer protection system used for an intelligent transformer substation. As for the transformer protection, the traditional transformer protection is characterized in that the analog quantity and the switching quantity of sides are introduced into the transformer protection device by a long cable to be concentrated and stored when the analog quantity and the switching quantity of sides of a transformer are required to be acquired. According to the on-site transformer protection system, a main control chamber is omitted, and the on-site transformer protection system can protect on-site devices, utilize communication network techniques, provide a corresponding network data transmission scheme, and artfully solve key technical problems of an on-site installed transformer protection realizing scheme. By virtue of redundant design, the on-site transformer protection system can send out warning information, and meanwhile maintain and protect the normal operation through the self-healing of a network switching technique after communication network faults are identified, so that the problem that the reliable operation of the transformer protection system is influenced by the communication network faults can be solved.
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Description

technical field

[0001] The invention belongs to the field of relay protection automation in the field of electric power engineering, and relates to a design method for in-situ transformer protection of intelligent substations. Background technique

[0002] In traditional substations, traditional transformer protection introduces the analog quantities (current and voltage) and switching quantities on each side of the transformer into the transformer protection device through long cables, and the transformer protection device completes the conversion from analog to digital and performs logical discrimination. .

[0003] Problems with this approach include:

[0004] 1. It occupies a large area. It is necessary to build a main control room to place transformer protection devices, which takes up a lot of land. In the case of increasingly tight land resources, the occupied investment is also increasing.

[0005] 2. The protection reliability is affected by the secondary cable. ...

Claims

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