System for monitoring secondary circuit model on line in real time based on protection device

Abstract

The invention belongs to the technical field of power systems and discloses a system for monitoring a secondary circuit model on line in real time based on a protection device. The system comprises a network communication module, a model resolution module, a graph generation module, a model storage module and a real-time comparison module, wherein the model resolution model is connected with the graph generation module and the model storage module and outputs a substation configuration description (SCD) static model and a resolved configured IED description (CID) on-line model respectively; the real-time comparison module is connected with the network communication module and the model storage module, receives a generic object oriented substation event (GOOSE) real-time model, a verified SCD static model and a resolved CID on-line model, compares and outputs a comparison result to the network communication module, and the comparison result is uploaded to a background system to realize real-time on-line monitoring. By the system, a phenomenon that a virtual terminal and a secondary circuit of the protection device make mistakes due to SCD file modification, CID configuration errors, secondary circuit real-time connection obstacles corresponding to GOOSE messages and the like can be timely found, so that operational risks of a substation are reduced.

Description

Technical field [0001] The invention relates to an online monitoring system in the technical field of power systems, in particular to a real-time online monitoring system based on a secondary circuit model of a protection device. Background technique [0002] With economic development, social progress, the continuous improvement of technology and information technology, and the increasingly prominent global resource and environmental issues, the development of power grids is facing new issues and challenges. Relying on modern information, communication and control technologies to promote the construction of smart grids and adapt to the requirements of future sustainable development has become a national strategy. As an important support for smart grid construction, substations carry important functions such as power transmission and load distribution. Based on the advancement of IEC61850 substation automation technology, the connection method of relay protection and other second...

AI Technical Summary

Problems solved by technology

However, this technology realizes monitoring based on the link layer, and only judges the connection status, but cannot judge whether the connection is correct; secondly, it can only realize the display of the link status of the GOOSE message, not the display of the protection secondary signal circuit diagram

It does not have the function of automatically forming the secondary circuit connection diagram of the device based on the analyzed model information, nor can it realize the comparison between the protection secondary circuit information after manual verification and the real-time monitoring of the actual connection status of the protection secondary circuit

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