36. Design of Real-Time Tracking System on High-Voltage Direct Current Converter Station Control and Protection System

Diagnostic tool functions of the original fault diagnostic system in direct current (DC) converter stations are not concentrated, and it is unable to accurately diagnose the exceptions of different layers. In order to ensure rapid and accurate location of the host events and the server faults, the real-time diagnosis software for high-voltage direct current (HVDC) converter station control and protection system is designed. The NetDDE technology tracks the suspicious analogy and variables of the switch state using the software interface of MACH2 system, which has been implemented to analyze the exception of the state variable and locate the host fault by recalling the historical data. By calling the stored procedure of SQL server, exceptions can be tracked in a real-time manner by means of the returned data column information. The host and the server exceptions can be rapidly and effectively monitored, tracked, and located by the system. It can also reduce the time of dealing with complex defects and increase the reliability of the whole control and protection system. The system does not affect normal operation of the original system.