Energy-saving intelligent check-up all-online direct-current charging and discharging system

Abstract

The invention provides an energy-saving intelligent check-up all-online direct-current charging and discharging system. The system comprises a host computer terminal, a gateway, an integrated monitor, a first charging device, a second charging device, a third charging device, a sub-monitor, a data collector, a first inversion power source, a second inversion power source and a third inversion power source; the host computer terminal is connected with the integrated monitor through the gateway; the integrated monitor is connected with the first charging device, the second charging device and the third charging device through a bus; the sub-monitor is connected with the data collector, the first inversion power source, the second inversion power source and the third inversion power source through an RS485 bus; the data collector, the first inversion power source, the second inversion power source and the third inversion power source are connected in parallel; and the first charging device, the second charging device, the third charging device and the sub-monitor are connected in parallel. The energy-saving intelligent check-up all-online direct-current charging and discharging system of the invention has the advantages of convenient use, energy-saving performance, environmental friendliness, automatic voltage equalization and high safety, and can assist in decreasing labor input.

Description

technical field [0001] The invention is an energy-saving intelligent checking all-on-line DC charging and discharging system, which belongs to the technical field of DC charging and discharging. Background technique [0002] At present, the power grid dispatching automation is very mature and perfect, and more and more substations are unattended. Although the power grid commissioning automation system covers part of the DC system information, the operating status of most DC equipment cannot be fully grasped. Traditional measurement methods only monitor A small amount of DC information cannot fully reflect the operating status of the DC system, and it is difficult to confirm the good condition of the battery. Once an accident occurs and the battery cannot supply power normally, the safe operation of the substation will not be guaranteed, and the consequences will be very serious. [0003] The daily inspection of most substation batteries is required to be inspected once a mon...

AI Technical Summary

Problems solved by technology

[0002] At present, the power grid dispatching automation is very mature and perfect, and more and more substations are unattended. Although the power grid commissioning automation system covers part of the DC system information, the operating status of most DC equipment cannot be fully grasped. Traditional measurement methods only monitor A small amount of DC information cannot fully reflect the operating status of the DC system, and it is difficult to confirm the good condition of the battery. Once an accident occurs and the battery cannot supply power normally, the safe operation of the substation will not be guaranteed, and the consequences will be very serious.

[0003] The daily inspection of most substation batteries is required to be inspected once a month. Since substations are widely used in the unattended mode, some stations are far away from the maintenance work area, which causes a lot of inconvenience to the inspection work. A large number of human resources, now generally use manual operation, the operation and maintenance costs are relatively high, the internal resistance and operating conditions of the battery cannot be monitored in real time, and there is a lack of effective detection methods in daily inspections, which may easily cause DC power failure. For only one battery pack The substations in the substation cannot be out of operation, nor can they perform full checking discharge. They can only use I10 constant current to discharge 50% of the rated capacity. As a result, most discharge operators either have a large number of wiring and a set of battery discharge, or discharge 50% of the rated capacity according to 0.1C10 current. Hours of unscientific method manipulation

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