Intelligent control system of transformers and coolers based on comprehensive perception and working method thereof

Abstract

The invention discloses an intelligent control system of transformers and coolers based on comprehensive perception and a working method thereof. Equipment operating conditions are comprehensively judged according to multi-information of the transformers and the coolers, a reliable identification method is provided for equipment states, real-time monitoring, early warning and evaluation of a wholecooling system are realized, and intelligent management of cooler operation is realized. According to the intelligent control system of the transformers and the coolers based on the comprehensive perception, feed-through transformers and air switches are arranged on connecting circuits of a power supply I, a power supply II and a bus bar; air switches are arranged on connection circuits of the bus bar and the coolers; the connection circuits of the bus bar and the coolers include main circuits and two branch circuits connected in parallel on the main circuits; air switches are installed on the main circuits, feed-through transformers are arranged on the two branch circuits correspondingly connected with an oil pump and a fan; and a transformer and cooler intelligent control device is further included, and the transformer and cooler intelligent control device comprises a central MCU, multiple sampling circuits and multiple voltage transformers.

Description

technical field [0001] The invention relates to a transformer cooling system monitoring device, which is specifically used for the monitoring and control of the transformer cooler system. Background technique [0002] The traditional cooling control system is composed of various relays, contactors, transfer switches and other separate components. There are many mechanical contacts and the number of analog data collection is limited. Although the important control element contactor is widely used in the automatic control circuit of the motor, it also has several obvious shortcomings. One is that the starting current is large, and once it is jammed, it is easy to burn the coil; the other is that it is only suitable for cutting off the normal load current, and the ability to cut off the short-circuit fault current is poor. At the moment of failure or when the load is too heavy, contact adhesion often occurs The third is that the low power supply voltage leads to insufficient s...

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Problems solved by technology

[0002] The traditional cooling control system is composed of various relays, contactors, transfer switches and other separate components. There are many mechanical contacts and the number of analog data collection is limited. Although the important control element contactor is widely used in the automatic control circuit of the motor, it also has several obvious shortcomings.

One is that the starting current is large, and once it is jammed, it is easy to burn the coil; the other is that it is only suitable for cutting off the normal load current, and the ability to cut off the short-circuit fault current is poor. At the moment of failure or when the load is too heavy, contact adhesion often occurs The third is that the low power supply voltage leads to insufficient suction of the electromagnetic system, which causes repeated vibrations of the contacts, or the initial pressure of the contacts decreases after long-term operation, and arc welding is prone to occur when the inductive load such as a motor is closed and the vibration is violent. The probability of cooling system failure caused by contactor failure is very high; at the same time, the cooler is divided into working, auxiliary, and standby configurations, and the working state is solidified. inconvenient

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