Molded case circuit breaker and line loss analysis method

Abstract

The invention relates to a molded case circuit breaker and a line loss analysis method. The molded case circuit breaker comprises a controller, and the controller is connected with a metering acquisition module, a transformer area identification module, a broadband carrier module, a current detection circuit and a release execution circuit; a node network topology structure of the current transformer area is obtained through information obtained by the transformer area identification module and the broadband carrier module, and meanwhile, electric quantity information of the metering acquisition module is acquired to form line loss analysis of the current transformer area; the molded case circuit breaker equipment adopts an integrated design, and each circuit part is reasonable in design,so that the size of the circuit breaker equipment is greatly reduced, and the installation is very convenient; the situations of messy installation lines, line flying and line breaking in the installation process are avoided, and potential safety hazards are eliminated; and grading line loss analysis and pre-judgment of the whole middle-low voltage transformer area are realized, and real-time performance, integrity, total data and the like of data acquisition are guaranteed.

Description

Technical field: [0001] The invention relates to the field of electric power, in particular to a molded case circuit breaker and a line loss analysis method. Background technique: [0002] Molded case circuit breaker is a commonly used electrical equipment, which can automatically cut off the current after the current exceeds the trip setting, so as to protect the circuit. At present, there are some problems with residual current operated circuit breakers: [0003] (1) The existing molded case circuit breaker is inconvenient to install. According to the requirements of the electrical installation specification on the low-voltage distribution network side, each node of the middle and low voltage side box body needs to install switchgear, and the installation of the molded case circuit breaker equipment in the box is relatively difficult. Small, due to the limited installation location and space, if there is no reserved installation line, the installation line is messy, and t...

AI Technical Summary

Problems solved by technology

[0003] (1) The existing molded case circuit breaker is inconvenient to install. According to the requirements of the electrical installation specification on the low-voltage distribution network side, each node of the middle and low voltage side box body needs to install switchgear, and the installation of the molded case circuit breaker equipment in the box is relatively difficult. Small, due to the limited installation location and space, when there is no reserved installation line, the installation line is messy, flying lines and broken lines exist, which bury serious safety hazards for the entire medium and low voltage station area nodes

[0004] (2) The existing conventional molded case circuit breaker has a single function, which only has the function of circuit breaker attributes, and does not have the function of wire line loss analysis

[0006] In the case that the existing conventional molded case circuit breaker cannot meet the line loss analysis; if an additional line loss analysis device is installed, the two are installed at the same time, the degree of cooperation between them is poor, the integration is low, the cost is high, and the maintenance is inconvenient, which makes the whole Reduced system efficiency

[0007] (3) Even if the existing line loss analysis device is integrated into the conventional circuit breaker, the existing line loss analysis device still has many shortcomings: the real-time performance of the data obtained by the existing line loss analysis device is not high, especially when the circuit breaker When the area interference is serious or the transformer load is heavy, the efficiency of equipment communication will be relatively low, and the stability of collected data will be relatively poor. At present, the data collected by the power consumption information collection system is relatively single, time-sensitive, and data integrity cannot be guaranteed; the analysis line The loss is not accurate, and it is impossible to accurately assess which node is the problem in the meter box and the household meter. Due to the lack of specific detection links, it is impossible to accurately determine the real content of the line loss problem.

Images