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Electric grid relay protection constant value on-line check integrated data processing method

A relay protection and data processing technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as heavy workload, refusal to operate or malfunction, high mismatch rate, etc., to improve management level, rich output information, The effect of high degree of intelligence

Active Publication Date: 2009-05-06
YIBIN POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

[0002] At present, the domestic relay protection calibration mainly adopts the offline calibration method. The calibration module is in the offline state, based on the normal maintenance mode of the system, and the calibration is performed according to the fixed value setting principle. Disadvantages to be avoided: 1) It cannot adapt to all operating modes. In some special operating modes, the protection performance may be seriously deteriorated or even refusal to operate or misoperation may occur. Therefore, new operating modes must be carefully calibrated in daily operation. 2) The protection setting value of offline setting is not the best setting value for most operation modes of the power system, which will inevitably reduce the performance of protection, resulting in small protection range, high mismatch rate and delay long

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  • Electric grid relay protection constant value on-line check integrated data processing method
  • Electric grid relay protection constant value on-line check integrated data processing method

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Embodiment Construction

[0015] An integrated data processing method for on-line checking of power grid relay protection fixed value. After the integrated checking system composed of EMS / DTS is started, the processing is performed according to the following steps:

[0016] (1) According to the EMS section, the topological connection relationship of the power grid is obtained

[0017] The EMS section can be obtained from the SCADA system in real time, or from the historical section or manually modified. The EMS section can also be generated from the section saved in a training simulation; the EMS is read into the telemetry and shaker information of the power grid SCADA system. , the data flow is called by two modules of EMS, namely: real-time module and research mode module; the data of the real-time module is called by the state estimation to form the cooked data set of the power grid; the research mode data dispatcher power flow and other modules are called to form the research status EMS: Energy Man...

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Abstract

The invention relates to an electrical network relay protection setting on-line verifying integrated data processing method. After an integrated verifying system formed by an EMS / DTS is started, the method performs processing according to the following steps: firstly, an electric network topology connection relation is obtained according to the section of the EMS; secondly, the network analysis parameters are initialized; thirdly, the verifying regulations are obtained; fourthly, the fault calculation is carried out; and finally, the setting verifying is finished. The invention performs on-line verifying to the electrical network relay protection setting, the protection range is extended, the mismatch ratio is reduced, and the time delay is short, therefore, the protective property is enhanced.

Description

technical field [0001] The invention relates to a checking method for electric network relay protection, in particular to a checking method for online setting of electric network relay protection according to fixed values. Background technique [0002] At present, the domestic relay protection calibration mainly adopts the offline calibration method. The calibration module is in the offline state, based on the normal maintenance mode of the system, and the calibration is performed according to the fixed value setting principle. Disadvantages to be avoided: 1) It cannot adapt to all operating modes. In some special operating modes, the protection performance may be seriously deteriorated or even refusal to operate or misoperation may occur. Therefore, new operating modes must be carefully calibrated in daily operation. 2) The protection setting value of offline setting is not the best setting value for most operation modes of the power system, which will inevitably reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26
Inventor 谢江蒋劲王鹏冯秀竹
Owner YIBIN POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER
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