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Online evaluation method and system for power grid relay protection constant value

A technology of relay protection and evaluation method, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of unavailability of primary equipment model parameters, and achieve the effect of avoiding unavailability and strong adaptability

Inactive Publication Date: 2015-03-11
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the model maintenance personnel and online calibration users belong to different departments in this method, the primary equipment model parameters may not be available

Method used

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  • Online evaluation method and system for power grid relay protection constant value
  • Online evaluation method and system for power grid relay protection constant value
  • Online evaluation method and system for power grid relay protection constant value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 It is a flow chart of an on-line evaluation method for power grid relay protection fixed value provided by the present invention. On-line evaluation method of power grid relay protection setting, including:

[0052] S10: Establish an online evaluation model for relay protection fixed value;

[0053] The relay protection device plays a role in ensuring the stable operation of the power system. If the power system fails, the relay protection device must quickly and accurately remove the faulty component. Reasonable configuration and correct selection of relay protection setting values ​​are important conditions to ensure the safe operation of the power grid. From the perspective of safe operation, the power grid puts forward strict requirements on the performance of relay protection devices, which must meet reliability, selectivity, sensitivity and quick action. Among them, the selection of relay protection setting value plays an important role in ensuring the...

Embodiment approach

[0061] figure 2 It is a flow chart of a method for establishing an online evaluation model of relay protection fixed value provided by the present invention. As a preferred implementation manner, the establishment of an online evaluation model for relay protection fixed value specifically includes:

[0062] S100: Obtain an equipment model by using the setting calculation software;

[0063] S101: Using the energy management system to acquire operation mode data;

[0064] Wherein, the operation mode data includes: remote signaling amount and remote measurement;

[0065] S102: Match the operation mode data with the primary equipment model to generate the relay protection fixed value online evaluation model.

[0066] The primary equipment model is obtained through the setting calculation software, and the model change of the setting calculation software is tracked in real time in the form of a public database of the setting calculation software, so as to ensure synchronization...

Embodiment 2

[0078] Figure 4 It is a structural diagram of an online evaluation system for power grid relay protection fixed value provided by the present invention. On-line evaluation system for power grid relay protection setting, including:

[0079] A model building unit 40, used to set up an online evaluation model for relay protection fixed value;

[0080] Data acquisition unit 41, used to automatically acquire the data of relay protection fixed value;

[0081] An evaluation standard acquisition unit 42, used to obtain the evaluation standard of the fixed value of the relay protection;

[0082] The performance evaluation unit 43 is configured to use the online evaluation model of the relay protection fixed value and the evaluation standard of the relay protection fixed value to evaluate the performance of the relay protection fixed value.

[0083] Figure 5 A structural diagram of a model building unit provided by the present invention. The model building unit 40 specifically in...

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Abstract

The invention discloses an online evaluation method for the power grid relay protection constant value. The method includes the steps of establishing an online evaluation model for the relay protection constant value, automatically obtaining data of the relay protection constant value, obtaining the evaluation standards of the relay protection constant value, and evaluating the performance of the relay protection constant value through the online evaluation model for the relay protection constant value and the evaluation standards of the relay protection constant value. By means of the online evaluation method, the adaptability of the relay protection constant value is higher. In addition, due to the fact that relay coordination software public databases are adopted for the online evaluation model, no correctness problem of one-time models exists, and therefore the problem that parameters of primary equipment models can not be used is solved. In addition, the invention further discloses an online evaluation system for the power grid relay protection constant value.

Description

technical field [0001] The invention relates to the technical field of relay protection fixed value, in particular to an online evaluation method and system for electric network relay protection fixed value. Background technique [0002] With the development of the power grid, a large number of infrastructure and renovation projects have been put into operation, and the temporary power consumption mode has become more and more complex, and the challenges faced by the power grid operation have continued to increase. As the first line of defense of the power grid, the relay protection device plays a vital role in the safe operation of the power grid. The relay protection fixed value is the amount used in the relay protection device to determine whether the relay protection device acts to remove the fault. [0003] The traditional off-line setting calculation is carried out by the dispatching units at all levels of the power grid, and the setting calculation of the relay prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 胡铁军王祎董艺郑健梓袁益松王斌龚向阳范黎敏李丰伟李雪冬
Owner STATE GRID CORP OF CHINA