A method for verifying the rationality of power flow branch data

A verification method and rationality technology, applied in the direction of measuring devices, instruments, measuring electronics, etc., can solve the problems of non-convergence of power flow, undeveloped research solutions, data errors, etc., and achieve the effect of clear thinking of the method

Active Publication Date: 2018-01-19
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

If the branch power arrangement is unreasonable, it may cause the power flow to not converge. At this time, the branch power cannot be known, let alone the unreasonable data.
If the unreasonable branch power arrangement can be found before the power flow calculation, it will help the calculation personnel to find data errors and also help to improve the convergence of the power flow. However, there is no mature solution for this research

Method used

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  • A method for verifying the rationality of power flow branch data
  • A method for verifying the rationality of power flow branch data
  • A method for verifying the rationality of power flow branch data

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Embodiment Construction

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0059] In the power flow calculation, the branch parameters are generally filled in per unit value, and the parameter value range is very wide, ranging from 0.0001p.u. Errors and errors during data copying, this kind of error usually results in an order of magnitude difference between the per unit value parameter of the line filled in and the normal parameter,

[0060] When checking branch parameters, the following issues need to be considered:

[0061] 1) It is necessary to be able to detect serious errors in the order of magnitude of the parameters;

[0062] 2) Do not depend on data other than power flow calculation;

[0063] 3) The method does not require accurate judgment of the correctness of the parameters, but it is necessary to screen out the problematic parameters as much as possible;

[0064] The parameter inspection scheme of the present invention...

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Abstract

The invention provides a method for verifying the rationality of power flow branch data. The power flow branch data includes line parameters, transformer parameters and branch load ratios. The method includes the rationality of line parameters, transformer parameters and branch load ratios. Verify. In the present invention, the verification of branch load rate does not depend on the convergence of the power flow, and the DC power flow without convergence is used to estimate the branch power, and the approximate result of the branch power is obtained for inspection, which avoids the unreasonable load rate of the branch leading to the power flow Disadvantages of non-convergence and inability to obtain branch power flow results; the present invention converts branch parameters that have a large value range and are not easy to check directly into intuitive line lengths and transformer short-circuit voltage percentages with typical value ranges. The method is clear and intuitive practical.

Description

technical field [0001] The invention relates to a verification method, in particular to a method for verifying the rationality of power flow branch data. Background technique [0002] Branches in the power flow include lines and transformers, and line parameters are related to line models and ambient temperature, which are inherent attributes of equipment. There are two main ways to check branch parameters: [0003] 1) Check directly [0004] This method directly screens out devices whose parameters are greater than or less than a certain threshold for prompting. This method is very simple but too rough. It can only check out parameters that are too large or too small, and cannot find filling errors within the value range. [0005] 2) Indirect inspection using parameter relationship [0006] This method checks branch parameters through the relationship between parameters, such as the famous R / X check. However, this method is invalid when the different parameters of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 王毅王虹富董毅峰侯俊贤陶向红汤涌仲悟之宋墩文万磊杜三恩许鹏飞冯静刘涛刘道伟杨学涛张志强刘燕嘉
Owner CHINA ELECTRIC POWER RES INST
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