Converter station DC control and protection system secondary circuit visual monitoring method and system

Abstract

The invention discloses a visual monitoring method for a secondary circuit of a direct-current control and protection system of a converter station. The method comprises the following steps: setting a physical contact diagram style template; sER event information of the direct-current control and protection host is obtained, secondary loop information is extracted, and the secondary loop information is stored in an SCADA system; instantiating the physical contact diagram style template to generate a monitoring picture; establishing an association relationship between an SCADA system secondary circuit information data object and a monitoring picture primitive; when the related state of the direct-current control and protection host changes, SER event information is actively uploaded, and the secondary loop state of a monitoring picture is refreshed; the state of the secondary circuit is monitored in real time, an alarm is given in time when a circuit fault occurs, and the position of the fault circuit is visually displayed on a monitoring picture. The method can be applied to the visual state monitoring of the secondary circuit of the converter station, can improve the state monitoring capability of the secondary circuit of the converter station, facilitates the elimination of the defects of the secondary circuit, and improves the operation and maintenance level of the secondary system of the converter station.

Description

technical field [0001] The invention relates to a visual monitoring method and system for a secondary circuit of a direct current control and protection system of a converter station, and belongs to the technical field of high voltage direct current transmission of power systems. Background technique [0002] With the construction and operation of UHV transmission channels and converter stations, the electrical connections in the network are closer, and the technical difficulty of operation and management has also increased significantly. The DC control and protection system is an important device to ensure the safe and stable operation of the power grid. Any problems in its secondary circuit may cause abnormalities in the high-voltage DC system. [0003] At present, the monitoring of the secondary loop of the DC control and protection system in the converter station lacks an intuitive and effective automatic means. It can only be preliminarily monitored through the alarm ev...

AI Technical Summary

Problems solved by technology

[0003] At present, the monitoring of the secondary circuit of the DC control and protection system in the converter station lacks intuitive and effective automatic means. It can only conduct preliminary monitoring through the alarm events in the DC monitoring background of the station. The analysis depends entirely on high-level technical personnel, and the real-time diagnosis ability is low. To meet the requirements of rapid diagnosis and treatment of converter stations, there is an urgent need for functional improvement

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