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Protection system for area electric network data sharing

A regional power grid and protection system technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of inability to accurately reflect system changes, lack of communication and cooperation, etc., to ensure safe and stable operation, avoid the expansion of accidents, and improve efficiency Effect

Active Publication Date: 2010-01-06
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, the safety automatic device and relay protection device of the power system are two independent systems, and there is a lack of effective communication and cooperation between the two, which cannot accurately reflect the changes in the entire system.

Method used

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  • Protection system for area electric network data sharing

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Embodiment Construction

[0015] The technical solution of the present invention will be described in further detail below according to the accompanying drawings.

[0016] The invention discloses a protection system based on regional power grid data sharing. The regional power grid is composed of several substations and power plants. The intelligent protection device in the regional power grid substation realizes the protection of the regional power grid. The protection system structure of the whole regional power grid is as attached figure 1 shown.

[0017] The intelligent protection host and the intelligent protection slave are installed in the substation of the protected power grid area. The intelligent protection host is responsible for the protection of all components in the entire area, and the intelligent protection slave is responsible for the integrated protection of the substation where it is located. The intelligent protection device has a data acquisition module, which uses the high-preci...

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Abstract

The invention discloses a protection system for area data sharing, which is based on a high-speed data communication network, a plurality of lines which are closely interrelated are considered to be used as one area, protection devices inside the area are mutually connected through optical fibers, and the information is shared, therefore, the novel protection system is established. The protection system utilizes a plurality of points to share synchronous information, is capable of accurately judging a position of fault when the protection system is broken down, has the absolute selectivity of protection action during normal communication and can select a protection unit needed to be used as reserve protection action according to a topological structure and a fault wire position of a protected electric system when main protection is rejected or a circuit breaker does not work. Compared with the traditional reserve protection action, the intelligent reserve protection action of the area has short time and good selectivity and also greatly simplifies adjusting and matching work.

Description

technical field [0001] The invention belongs to the technical field of relay protection and safety control of electric power systems, and in particular relates to a relay protection and safety control system and method based on information sharing of electrical quantity and state quantity of a regional power grid. Background technique [0002] With the development of grid interconnection and power market, the power system will gradually approach its operating limit, its operation and control will be more complicated, the possibility of disturbance and failure will be greater, and the consequences will be more serious. high demands. [0003] Conventional relay protection is used to automatically and quickly remove faulty components and isolate faults after a fault occurs in the power system, so as to ensure the safety of people and equipment and the normal operation of non-faulty parts. Existing relay protection and safety automatic devices cannot adapt to the requirements o...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 蔡敏王友怀周虎兵赵严凤殷建刚田文辉
Owner BEIJING SIFANG JIBAO AUTOMATION
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