Distribution automation protection constant value online evaluation method

Abstract

The invention relates to a power distribution automation protection constant value online evaluation method. The method comprises the following steps: S1, initiating a protection constant value notification sheet flow from a PMS system; s2, transferring to a GOMS system, and automatically synchronizing to a production control large-area DMS system through a wide-area transmission service via a management information large area and forward and reverse isolation equipment; s3, downloading the protection constant value notice passing downloading audit to a protection terminal on the operation line through the forward and reverse isolation equipment via the safety access area; s4, the DMS system service automatically and regularly calls and measures protection constant values in all downloadedand online operated protection terminals in the jurisdiction, automatically compares the protection constant value notice constant value with a constant value returned by the call and measurement terminal, and judges whether the terminal protection constant value is correctly downloaded according to a standard or not; s5, automatically analyzing the action condition of the terminal along the line; and S6, the DMS transmits the analyzed data to a large four-area management information large-area WEB system through forward isolation equipment, and displays an analysis result.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to an online evaluation method for fixed value of distribution automation protection. Background technique [0002] With the continuous development of the distribution network, the primary grid of the distribution network changes frequently, and the lack of effective fixed value management and verification means leads to an increase in the risk of jumping to the upper switch in the event of a fault, which may expand the scope of power outages. For pole-mounted switch protection, there is a high risk of falling when working at heights, and the setting value cannot be adjusted with power on, resulting in unnecessary power outage time. [0003] In order to improve the correctness and rationality of the terminal protection setting value, ensure the safe and stable operation of the line, and improve the service quality of power supply, it is necessary to comple...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the distribution network, the primary grid of the distribution network changes frequently, and the lack of effective fixed value management and verification means increases the risk of jumping to the upper switch when a fault occurs, which may expand the scope of power outages

For pole-mounted switch protection, there is a high risk of falling when working at heights, and the setting value cannot be adjusted with power on, resulting in unnecessary power outage time