Automatic check system for setting values of protective devices

Abstract

An automatic check system for setting values of protective devices of a transformer comprises a setting value list download module, a module for downloading protective device protocols, and a setting value comparing module, wherein the setting value list download module accesses WEB servers of provincial level companies in a webpage manner through a scheduling data network in a transformer substation, reads a protective device setting value list of a database server behind a firewall, and downloads the protective device setting value list to a local transformer substation; the module for downloading the protective device protocols is used for calling protocols of the protective devices in the transformer substation; and the setting values are downloaded from debugging ports for connecting the protective devices; and the setting value comparing module compares the protective device setting value lists of the provincial level companies with setting values of the protective devices of the module for downloading the protective protocols, accesses the WEB servers of provincial level companies in the webpage manner beside the transformer substation, and is connected with the database server; a webpage program operating on the WEB server accesses databases of the provincial level companies through an sql interface; and the setting values are compared, so that the process of downloading the setting value lists from the provincial level companies to the transformer substation is simplified, and all the operation can be finished in the transformer substation.

Description

technical field [0001] The invention relates to a comprehensive automation system of a substation, in particular to an automatic checking system for the fixed value of a protection device of a substation. Background technique [0002] As an important parameter for relay protection logic judgment, the fixed value determines the correctness of the protection device action and also affects the performance of the protection. Therefore, in the debugging stage of the relay protection device, before it is put into operation, during maintenance and during normal operation, it is very important to download, check and proofread the relay protection setting and change the operating state of the relay protection during operation. Important and indispensable steps. There are two types of relay protection setting value check, modification and relay protection operation state change: on-site operation and remote operation. At present, there are problems and deficiencies in these two opera...

AI Technical Summary

Problems solved by technology

This can shorten the development cycle of the relay protection device and improve the reliability of the relay protection, but this brings trouble, that is, the setting value of the protection increases and becomes complicated

The checking of substation relay protection setting value is to print out the protection setting value through the protection device, and check it with the setting value content of the protection setting value sheet one by one, or directly compare the setting value of the protection setting value sheet with the setting value on the relay protection device. Check the content one by one, the speed of the two methods is also very slow, the efficiency is very low, and it is easy to make mistakes

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