Data sharing type area protection system based on IEC 61850

A technology for protection systems and regional power grids, applied in protection against undervoltage or no voltage, emergency protection circuit devices, information technology support systems, etc., can solve the problem of lack of information communication and information sharing for protection equipment , The relay protection system takes care of one and loses other problems to achieve the effect of ensuring safe and stable operation, avoiding the expansion of accidents, and improving efficacy

Active Publication Date: 2010-01-06
STATE GRID HUBEI ELECTRIC POWER COMPANY +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

The lack of effective information communication and information sharing between various protection devices makes the traditional relay protection system often lose sight of one another, and it is difficult to meet the growing requirements of the power system

Method used

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  • Data sharing type area protection system based on IEC 61850
  • Data sharing type area protection system based on IEC 61850

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Experimental program
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Embodiment Construction

[0022] The technical solution of the present invention will be further described in detail according to the accompanying drawings in the description.

[0023] The regional power grid data sharing protection system based on IEC61850 of the present invention is composed of several sites, and the communication between the sites is carried out through the network. The whole system structure is as attached figure 1 shown. The regional power grid is composed of several stations, namely, substations and power plants. The stations communicate through the network and share the collected data. The intelligent protection device has a data acquisition module, which uses the GPS satellite synchronous clock to realize the synchronous measurement of the grid voltage, current and state quantities, and calculates the grid voltage and current amplitude, phase, and frequency information, and the calculated grid information is transferred through the network The amplitude, phase and frequency in...

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Abstract

The invention discloses a data sharing type area protection system based on IEC 61850, 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, intelligent protection devices inside the area are mutually connected through optical fibers, GPS synchronous data are adopted, 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 power system relay protection and safety control, and in particular relates to a relay protection and safety control system and method based on IEC61850-based regional power grid electrical quantity and state quantity information sharing. 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 of powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02H7/22H02H7/26H02H3/24
CPCY02E60/723Y04S40/124Y04S10/20Y02E60/725Y02E60/7838Y04S10/16Y02E60/00
Inventor 蔡敏周虎兵赵严凤王友怀杨增力田文辉
Owner STATE GRID HUBEI ELECTRIC POWER COMPANY
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