Transformer cooler precise and intelligent control device based on AD sampling

Abstract

The invention relates to a transformer cooler precise and intelligent control device based on AD sampling.The device comprises a central management module, a plurality of motor protection modules, a power module and a spare power automatic switching module, wherein the motor protection modules are in one-to-one correspondence with coolers of a cooler unit, and each motor protection module is used for acquiring the motor operating state of the corresponding cooler and feeding the motor operating state back to the central management module; the spare power automatic switching module is used for power supply switching according to the states of a main power supply and a reserve power supply, and the central management module is used for controlling the work of the cooler unit according to the operating states of fan motors and oil pump motors of the coolers.By the adoption of the device, system wiring is easy, construction and maintenance are convenient, reliability is high, the complicated air cooling motor protecting function can be realized, fully-automatic cooler balanced operation and working conditioning monitoring can be achieved, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of transformer safety control, in particular to the technical field of intelligent control of transformer coolers, in particular to an accurate intelligent control device for transformer coolers based on AD sampling. Background technique [0002] The cooler of the strong oil air-cooled transformer is composed of a fan, radiator, oil pipe, oil pump oil flow indicator and so on. The cooling fan is used to exhaust the hot air emitted from the heat exchanger. It is fixed on the cooler body with a bracket. The fan is forced to blow air to cool the radiator, thereby cooling the oil in the radiator. The radiator is installed on the surface of the transformer body to dissipate heat from the transformer oil to cool it down. The oil pipe transports the hot oil in the transformer body to the radiator for cooling, and then transports the cooled oil back to the transformer body. The oil pump is installed in the lower p...

AI Technical Summary

Problems solved by technology

[0010] 5. When the strong oil circulation cooling transformer is running, it must be put into the cooler

However, in the actual application process, the functions realized by the PLC are relatively simple, and the interface operation is not friendly. The on-site operators are not familiar with the technical details of the PLC, and the troubleshooting of the fault is slow, or even difficult to start, which affects the timely troubleshooting and handling of the cooler system fault.

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