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Protection control system and method base on electric network synthesis information

A technology of protection control and integrated information, applied in information technology support systems, emergency protection circuit devices, electrical components, etc., can solve problems such as lack of communication and cooperation, and inability to accurately reflect system changes, so as to ensure safe and stable operation and avoid Expansion of accidents and the effect of improving efficacy

Active Publication Date: 2009-01-21
CHINA SOUTHERN POWER GRID COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 control system and method base on electric network synthesis information
  • Protection control system and method base on electric network synthesis information
  • Protection control system and method base on electric network synthesis information

Examples

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0024] Communication between the main station and the sub-station is carried out through the dedicated data channel with 2M bandwidth of the power system. The substation includes a data acquisition unit and a control execution unit. The data acquisition unit is composed of a power plug-in, an AD sampling plug-in, a state quantity input plug-in, a GPS timing plug-in, a sampling data storage plug-in, a network communication plug-in, and a CPU plug-in. The backplane enables direct communication between various plug-ins. The power plug provides working power for the entire device. The AD sampling plug-in is responsible for collecting analog quantities such as voltage and current, and converting them into digital quantities. The input plug-in is responsible for collecting the switch state quantities such as the position of the circuit breaker and the position ...

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Abstract

The present invention relates to a power system protection and control system. The protection and control system comprises a control server which is connected with a communication channel, a file server, a data acquisition unit and a control actuating unit. The control server is used for receiving the information with a GPS time scale, which is transmitted by the data acquisition unit, so as to analyze and judge whether the system has a failure; then the circuit breaker of the power system is controlled by control actuating server. The file server is used for storing the historical data and order message of the control server. The data acquisition unit is used for measuring the analog quantity and state quantity of the power system, and has the GPS synchronic time-comparing function so that the measured data have the GPS time scale. The control actuating unit is used for receiving the order issued by the control server, so as to open and close the brake of the circuit breaker of the power system. In addition, the present invention also provides a method which can be used for automatically controlling the relaying protection and security of the power network. The method improves the capability of the power network to identify the failure, and avoids the major power failure of the power network.

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 electrical quantity and state quantity information 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 of power sys...

Claims

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Application Information

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IPC IPC(8): H02H7/26H02J13/00
CPCY02E60/723Y04S10/20Y02E60/725Y04S10/16Y02E60/00
Inventor 王久玲杨晋柏赵曼勇周红阳陈朝晖龚建平姚斌张忠理徐振宇
Owner CHINA SOUTHERN POWER GRID COMPANY
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