Online monitoring system and monitoring method for turn-to-turn short circuit of power distribution transformer

Abstract

The invention relates to an online monitoring system and monitoring method for turn-to-turn short circuit of a power distribution transformer. The online monitoring system and monitoring method aim at monitoring the turn-to-turn short circuit situation of the power distribution transformer in real time and giving out fault diagnosis timely. By means of the online monitoring system and monitoring method, an electrical signal collecting device is utilized to collect electrical parameters of the power distribution transformer, a signal preprocessing unit can convert the collected electrical parameters into digital signals, a digital signal collecting unit collects the digital signals and transmits the digital signals to a data processing and diagnosing unit through a wireless terminal, and the data processing and diagnosing unit can process and analyze the received digital signals and can carry out fault diagnosis according to processed and analyzed results. The online monitoring system and monitoring method can monitor turn-to-turn short circuit of the power distribution transformer in an online mode in real time. Thus, fault can be found timely in early stage, operation accidents can be avoided, the actual service life of the power distribution transformer is prolonged, and power supply reliability is improved.

Description

technical field [0001] The invention relates to fault diagnosis of distribution transformers, in particular to an on-line monitoring system and monitoring method for short-circuit between turns of distribution transformers. Background technique [0002] A distribution transformer is a high-voltage electrical device that realizes the conversion of electric energy of different voltage levels in the power system. It undertakes the task of converting voltage and current and transmitting electric power. Therefore, the performance of the distribution transformer will directly affect the safe and stable operation of the power system. All in all, Transformers are as important as the "heart" of the grid. Similarly, the distribution transformer is also the "heart" of the distribution network, and its normal operation is the key to the normal operation of the entire distribution network system. [0003] After a turn-to-turn short-circuit fault occurs in a distribution transformer, the...

AI Technical Summary

Problems solved by technology

As we all know, for a slight inter-turn short circuit fault, the full load current can often be sent continuously, but the accident point has been burned out. If the inter-turn short circuit is not found in time, the fault will continue to develop, eventually leading to the burning of the transformer, which will cause serious damage to the user. Great impact, seriously affecting power supply security and power supply reliability

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