Distribution network constant value automatic setting method based on network frame topology and primary and secondary association

Abstract

The invention discloses a distribution network constant value automatic setting method based on grid topology and primary and secondary association, which comprises the following steps: step 1, performing primary and secondary equipment association, namely association between primary switch equipment and a secondary terminal, and generating a primary configuration information file after association; step 2, associating the distribution network master station with the secondary terminal, and generating a secondary configuration information file after association; and step 3, associating the network frame topology of the main station with the primary configuration information file and the secondary configuration information file, finally generating and exporting constant value parameters according to a related constant value setting principle and method, and uniformly issuing the constant value parameters to a secondary terminal by the main station. According to the setting method, automatic setting of the distribution network constant value parameters can be realized, the defects of low constant value calculation efficiency and low accuracy caused by human subjective factors are overcome, and the operation and maintenance cost and the error probability are reduced.

Description

technical field [0001] The invention belongs to the technical field of power system switch protection, in particular to an automatic setting method of distribution network fixed value based on grid topology and primary-secondary correlation. Background technique [0002] In the existing technology, the calculation method of the fixed value setting of the smart distribution network is still based on experience, and the fixed value is roughly estimated by referring to the empirical table, that is, referring to the fixed line model parameters, and the approximate fixed value is found out according to the historical experience table. The accuracy rate of setting value and calculation efficiency are both low. When it is actually put into production and operation, it will cause malfunction and refusal of protection, which will bring great operational risks to the power grid. At the same time, due to the wide coverage of distribution network lines and the large number of distributi...

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Problems solved by technology

[0002] In the existing technology, the calculation method of the fixed value setting of the smart distribution network is still based on experience, and the fixed value is roughly estimated by referring to the empirical table, that is, referring to the fixed line model parameters, and the approximate fixed value is found out according to the historical experience table. The accuracy rate of setting value and calculation efficiency are low. When it is actually put into production and operation, it will cause malfunction and refusal of protection, which will bring great operational risks to the power grid.

At the same time, due to the wide coverage of distribution network lines and the large number of distribution terminals, in this situation, if it involves line re-planning or primary and secondary equipment replacement or updating, it is necessary to re-adjust several fixed values, directly increasing the operation Dimension cost and error probability

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