Remote intelligent maintaining device of transformer substation storage battery

Abstract

The invention discloses a device for testing electrical performance in a transformer substation of an electric power system, and particularly discloses a remote intelligent maintaining device of a transformer substation storage battery. The remote intelligent maintaining device comprises an upper managing machine and five loops composed of a microprocessor, a voltage transducer, a signal conditioning circuit, a power driving circuit, a photo-coupling circuit, an insulated gate bipolar translator (IGBT) tube and a positive temperature coefficient (PTC) resistor. After adopting the structure, the storage battery remote control volume is tested and remote maintenance is performed by utilizing an existing computer technology and a real-time Ethernet communication technology and combining the five loops. By means of arrangement, safe constant current discharge can be achieved, data acquisition is real-time and quick, remote automatic control of storage battery volume testing is achieved, field operation is not required, checking discharge work can be carried out to multiple transformer substations at the same time, fatigue caused by arriving and departing a field is avoided, a large amount of manpower and material resources are saved, and the work efficiency is greatly improved.

Description

[0001] technical field [0002] The invention relates to a test device for electrical performance in a power system substation, in particular to a remote intelligent maintenance device for a storage battery in a substation. Background technique [0003] At present, the digitalization of substations is getting higher and higher, and most domestic substations have been unattended. The DC power system directly provides the basic source power for the automation devices in the station, and the battery is the last safety barrier of the entire DC power system. When something goes wrong, the protection fails, the switch refuses to move, the channel is interrupted...the consequences are unimaginable. In recent years, major power accidents caused by battery problems have occurred frequently, causing major economic losses. Due to the complexity and invisibility of the internal performance of the battery, the battery has always been the focus and difficulty of power supply maintenance;...

AI Technical Summary

Problems solved by technology

In recent years, major power accidents caused by battery problems have occurred frequently, causing major economic losses

Due to the complexity and invisibility of the internal performance of the battery, the battery has always been the focus and difficulty of power supply maintenance; so far, it is difficult to have a method to conduct a comprehensive qualitative and quantitative assessment of the performance of the battery except for the checking capacity test. testing and maintenance

[0004] In the early days, the battery capacity test was done manually using variable resistance boxes, voltage and ammeters, which was time-consuming and laborious, and the real-time performance of data collection was poor, and constant current discharge could not be realized; with the development of science and technology, intelligent discharge loads appeared, constant current Discharge realizes the automatic control of the discharge process, which makes the checking capacity test a big step forward; but it must be operated on site. With the rapid development of the power system and the increase in the number of substations, it is difficult under the condition of limited manpower and material resources. Use the smart load to complete the periodic checking capacity test of the battery according to the regulations

Due to the existence of the above difficulties, many units seldom test the capacity of the battery, or even do a capacity check test, which bury a huge hidden danger for the safe operation of the power system

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