Adjusting-free and self-checking method for station domain protection control device in intelligent transformer substation

Abstract

The invention discloses an adjusting-free and self-checking method for a station domain protection control device in an intelligent transformer substation. The method comprises the following steps: utilizing the uniqueness of the MAC(Media Access Control)addresses and the allocated IP (Internet Protocol) addresses of devices in the intelligent transformer substation to distinguish whole-station protection equipment objects, acquiring the fixed value parameters of on-site protection devices in the substation by the station domain protection control device through a transformer substation MMS (Multimedia Messaging Service) network, automatically mapping and downloading the acquired fixed value parameters of the on-site protection devices to corresponding fixed values of the station domain protection control device according to different addresses by the station domain protection control device, and simultaneously realizing the automatic verification of fixed value content which is successfully downloaded by the station domain protection control device. When the station domain protection control device normally runs, the fixed value content of each on-site protection device is polled at regular time, and an online monitoring function is realized. When updating variation occurs in the on-site protection fixed values, the variation of the on-site protection fixed values is discovered by the station domain protection control device through a polling mechanism, the existing fixed value content is updated in an self-adaptive way, and the parameters are corrected. The method has the advantages that the manual operation is reduced, and the use reliability and flexibility of the device are improved.

Description

technical field [0001] The invention relates to a setting-free and self-inspection method for a station domain protection control device in an intelligent substation, belonging to the technical field of electric power system automation. Background technique [0002] In the intelligent substation, the station domain protection control device utilizes the shared data information of the whole station to optimize and integrate the protection and control functions and realize the station domain backup protection and safety and stability control functions, further improving the reliability and speed of protection, and strengthening the safety and stability of the power grid run. The station area protection control device integrates the redundant protection of the bus coupler (section) and multiple lines, optimizes the failure protection and busbar backup, realizes functions such as low-frequency and low-voltage load shedding, main transformer overload cut-off, and station-area bac...

AI Technical Summary

Problems solved by technology

However, the lengthy list of fixed values ​​needs to be manually adjusted and verified one by one. The workload is huge, and errors are prone to occur, and errors are not easy to find.

[0004] At present, the setting value setting system is a completely offline system. When the operation mode changes, it cannot meet the requirements of sensitivity and selectivity in real time. The online setting value setting check function is needed to complete the dynamic setting check function.

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