Power supply system based on intelligent self-diagnosis open circuit protection

Abstract

The invention relates to a power supply system based on intelligent self-diagnosis open circuit protection. The power supply system is characterized in that: a bus insulation detecting unit (2) is connected with a DC bus in a main power supply system unit (9), a storage battery open-circuit protection unit (4) is connected with a storage battery pack (3) in the main power supply system unit (9), a DC feeder state detecting unit (5) is connected with DC feeder branch circuits in the main power supply system unit (9), an AC input state detecting unit (6) is connected with a station transformer AC input end of the main power supply system unit (9) for monitoring input AC data and state in real time, a charging and discharging monitoring unit (8) is connected with a rectifying and inverting voltage regulator in the main power supply system unit (9), a power supply self-operation-maintenance unit (7) is directly connected in the main power supply system unit (9), and each unit is connected with a power supply self-diagnosis control main unit (1) through a communication bus, thereby forming the novel intelligent power supply system having the advantages of self-operation-maintenance management and open circuit protection.

Description

technical field [0001] The present invention relates to the field of power supply technology, in particular to an open-circuit protection power supply system and method based on intelligent self-diagnosis technology, which is mainly used in industries such as electric power, communication, finance, mining, media, and power supply. Background technique [0002] At present, in the application of substation power supply in the electric power industry, some substations are already using integrated power supply systems, which are composed of AC power supply, DC power supply, AC uninterruptible power supply, inverter power supply, and DC conversion power supply (DC / DC) for the station. And other parts, the system shares the battery pack of the DC power supply as a backup power supply, and supplies power when an accident occurs in the station or the AC power fails. [0003] In order to better ensure the stable operation and reliable power supply of the power system, the current met...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a new type of intelligent power supply system. Through the integrated design concept, a new type of intelligent self-diagnosis open circuit with real-time online self-diagnosis, self-operation and maintenance, and self-protection is formed, which is more reliable and stable. The protected power supply system solves the problems of the existing power supply system and monitoring system that are not integrated, not unified, has a large amount of on-site transformation, is unreliable, and cannot self-perceive the state perception diagnosis, self-online active operation and maintenance, etc., and solve the current difficulties in manual operation and maintenance, In addition, it solves the problem of terminal production safety accidents caused by the abnormal use of the entire power system due to the abnormality of a single battery in the power system, making the power system truly a reliable and stable , safety, and an intelligent power supply system that is available at critical moments and does not stop power outages. The technical solution adopted to achieve the purpose of the present invention is: a power supply system based on intelligent self-diagnosis open-circuit protection, including integrated main power supply system units, The power supply self-diagnosis control main unit, bus insulation detection unit, battery pack, battery open circuit protection unit, DC feeder state detection unit, AC input state detection unit, power supply self-operation and maintenance unit, charge and discharge monitoring unit, the main power system unit is the whole The main body of the power system realizes the essential functions of the AC power supply, DC power supply, UPS power supply, inverter power supply, and DC conversion power supply. The bus insulation detection unit is connected to the DC bus to realize real-time monitoring of the bus insulation status data. The battery open circuit protection unit Connected to the battery pack to start automatic protection when the battery is abnormal, the DC feeder status detection unit is connected to each DC feeder branch to monitor the status and data of each DC feeder in real time, and the AC input status detection unit is connected to the AC input terminal of the station transformer to monitor the input The AC data and status are monitored in real time. The charging and discharging monitoring unit is connected to the rectification inverter voltage regulator to monitor the data and status of the rectification, inverter and voltage regulation of the power system in real time. The power supply self-operation and maintenance unit is connected to the main power system unit Accept the instruction of the main unit to start the self-operation and maintenance management of the power supply system. Diagnosis of control commands from the control master unit

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