Intelligent system for rapidly identifying transient fault of high-voltage direct-current power transmission system

Abstract

The invention discloses an intelligent system for rapidly identifying a transient fault of a high-voltage direct-current power transmission system. The intelligent system for rapidly identifying the transient fault of the high-voltage direct-current power transmission system comprises a transient fault monitoring system, a project management module, an electromagnetic transient simulating calculation module, a fault feature fingerprint database and a fault analysis and identification module. According to the intelligent system for rapidly identifying the transient fault of the high-voltage direct-current power transmission system, firstly, a corresponding electromagnetic transient simulation model is built through the project management module, then, a large amount of simulating calculation is carried out on a target project through the electromagnetic transient simulating calculation module, information of a possible fault of the project is obtained, the information of the fault is processed through the feature extraction technology, and the fault feature fingerprint database is built. When an actual transient fault occurs, the transient fault monitoring system can automatically obtain related information of the transient fault, comparison is carried out between the information and the fault feature fingerprint database, and the type, the position and the reason of the transient fault can be judged. The reliable technological means is provided for rapid removal of the transient fault of the high-voltage direct-current power transmission system, the purpose of rapid recovery of power supply is achieved, the social economic loss is reduced, and the intelligent system for rapidly identifying the transient fault of the high-voltage direct-current power transmission system has good application and popularization prospect.

Description

technical field [0001] The invention relates to an intelligent system for quickly identifying transient faults of a high-voltage direct current transmission system, belonging to the technical field of high-voltage power transmission and transformation. Background technique [0002] The high-voltage direct current transmission system has many advantages such as large transmission capacity, low line cost, small loss, no need for synchronization, and good networking. It is widely used at home and abroad. Especially in recent years, my country is vigorously developing UHVDC transmission technology. Optimal allocation of energy plays an important role. However, although the lines of the HVDC transmission system are relatively simpler than those of the AC system, there are many types of equipment in the converter station and the structure of the control and protection system is complex, resulting in more sources of system overvoltage, more diverse types of faults, and a weaker abil...

AI Technical Summary

Problems solved by technology

At present, for the troubleshooting of transient faults in HVDC transmission systems, experts mainly rely on their experience and theoretical knowledge to make judgments, and the basis for judgment is the polar line voltage and current and protection action information monitored by traditional oscilloscopes. There are few sources of information. Manual judgment takes a long time, and it is difficult to quickly identify the fault and reproduce the fault process, and guide the rapid troubleshooting and restoration of power transmission

Images