Method and system for fault diagnosis of secondary system of intelligent substation

Abstract

The invention discloses a method and system for carrying out intelligent substation secondary system fault diagnosis. The method for carrying out intelligent substation secondary system fault diagnosis by using the intelligent substation secondary system fault diagnosis system includes the following steps that: system configuration for the entire intelligent substation secondary system fault diagnosis system is performed on a workstation arranged in a first security region through a first security region system; the data information of each node in a secondary system is acquired through an acquisition system in a second security region system, so that the work state of the secondary system can be obtained, and the work state of the secondary system is transmitted to a monitoring host and a data server through a firewall; various types of data of the entire intelligent substation are acquired and processed through the monitoring host in the first security region system; and information such as temperature, humidity, voltage, current and power in the monitored intelligent substation is acquired through using sensor technologies, so that judgment can be carried out according to the acquired data information, and therefore, fault nodes and fault types can be determined.

Description

technical field [0001] The invention relates to technical fields such as intelligent power management systems, and specifically relates to a method and system for fault diagnosis of a secondary system of an intelligent substation. Background technique [0002] With the development of science and technology, the substation automation system has experienced the development process of centralized RTU, distributed system, network-based monitoring system, digital substation to the current intelligent substation, and the level of substation automation is getting higher and higher. [0003] In recent years, the construction of my country's smart grid has risen to the level of national strategy, and smart substation is one of the core platforms for energy conversion and control in the construction of a strong smart grid, and its planning and construction have been fully rolled out. Based on the IEC61850 standard, the smart substation widely adopts advanced technologies such as digit...

AI Technical Summary

Problems solved by technology

However, with the promotion of smart substations, on the one hand, the amount of information in substations has doubled, and a large amount of digital interface information has been added. It has become unrealistic for operation and maintenance personnel to accurately understand the detailed meanings of various alarm information. On the other hand, as the amount of information increases, it is found that the analysis depth of the alarm information is not enough, and the equipment that generates the alarm is not necessarily a faulty device, nor is it necessarily the location of the fault. The superficial alarm information may be caused by various reasons. Lack of in-depth data classification and mining of alarm information, lack of linkage analysis of various alarm information, and lack of analysis of possible causes of alarms. Based on the above blind spots in substation operation and inspection, it is necessary to reanalyze and reprocess all kinds of alarm information research , to help operators understand the meaning of various alarm information more clearly, to help maintenance personnel to conduct auxiliary fault analysis, to realize rapid fault location and diagnosis, to provide effective guidance for fault repair provided by operation and inspection personnel, and to improve the convenience of intelligent station maintenance

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