System and method for intelligently monitoring state information of transformer

Abstract

The invention discloses a system for intelligently monitoring state information of a transformer. The system comprises a universal measurement device, a gas-in-oil monitoring device, a transformer partial discharge monitoring device, a sleeve insulation monitoring device, an iron core grounding current monitoring device, an exchanger and a processor, wherein each monitoring device is respectively connected with the processor through marking interfaces of the exchanger to transmit monitored various signals of the transformer to the processor for analyzing and processing; the processor is used for carrying out fault diagnosis and risk evaluation on the operating condition of the transformer on the basis of a preset transformer fault diagnosis algorithm and gives an alarm when a fault is occurred; meanwhile, a standard communication protocol, namely, an IEC61850 protocol, is adopted between each monitoring device and the processor. The system and a method have comprehensive monitoring parameters, are easy for integration and have strong independence.

Description

technical field [0001] The invention relates to the field of power equipment state monitoring, in particular to an intelligent monitoring system and method for transformer state information. Background technique [0002] Since entering the electrical age, electric energy, as the main driving force for the development of science and technology and the improvement of the national economy, has been widely used in various fields such as industry and agriculture, affecting all aspects of people's work and life, and its importance is self-evident. With the continuous expansion and transformation of power grids at all levels, in order to ensure the stable operation of the power grid, the workload of maintenance and repair of various power equipment has also increased greatly. Among them, the transformer maintenance of substations still has the following deficiencies: [0003] (1) The monitoring parameters are not uniform and the amount of information is incomplete: [0004] Due to...

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Problems solved by technology

[0003] (1) The monitoring parameters are not uniform and the amount of information is incomplete:

[0004] Due to the different technical routes of equipment manufacturers, the different angles of attention of users, and the lack of unified technical standards in the whole country, the information parameters measured by the state monitoring equipment currently in operation are not uniform and not comprehensive. The analysis and diagnosis methods of the parameters are also different

[0005] (2) The model and interface standards are not uniform, the scalability is poor, and it is not easy to integrate:

[0006] At present, due to the lack of unified information model standards and communication interface standards, various manufacturers use different information models and various communication interfaces, which makes subsequent system integration and information interconnection difficult and poor in scalability. Integration and information interconnection must increase costs, invest a lot of manpower and material resources, cause waste, and also restrict the development of condition-based maintenance technology

[0007] (3) Independence is poor. If the on-site monitoring device operates separately from the main station system of the station control layer, the function will be lost:

In the actual application site, due to technical reasons, construction progress and other reasons, there are a large number of cases where the main station system of the station control layer lags behind the on-site monitoring device and is put into use. Failures of the main station system and abnormal communication also occur from time to time. Under such circumstances, it is equivalent to being in the "vacuum period" of monitoring, and the status monitoring has not played its due effect

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