Remote monitoring device and remote monitoring method of distribution transformer

Abstract

The invention discloses a remote monitoring device and a remote monitoring method of a distribution transformer. The device comprises a wireless communication module, a signal processing and control module, a distribution monitoring module, a power module and a battery, wherein the power module further comprises a transforming and rectifying unit, a three-phase rectifier bridge, a first DC voltage dropping unit, a power switching unit, an AC power supply monitoring unit, a second voltage dropping unit and a third DC voltage dropping unit. By adopting the technical scheme of the invention, because the standby power consumption of the monitoring device is reduced below 1 milliwatt, energy can be saved, and moreover, the distribution transformer can still achieve a monitoring function under the condition of long-term power cut, thus the cost is lower.

Description

technical field [0001] The invention relates to the technical field of distribution transformer monitoring, in particular to a remote monitoring device and method for distribution transformers. Background technique [0002] Distribution transformers are power equipment that directly distribute electric energy to low-voltage users, and their operating data are an important part of the basic data of the entire distribution network. [0003] With the development of the economic level, users have higher and higher requirements for power supply quality and reliability, and the installation of distribution transformers is becoming more and more popular. How to realize the status monitoring of distribution transformers, prevent illegal manipulation of transformers, steal electricity, steal transformers and other incidents, and ensure the safety and reliability of electricity use has become an increasingly prominent problem. In the power industry, it has always been a difficult pro...

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Problems solved by technology

However, the common problem of these products is that the power consumption is too large. The sleep current of the GPRS module is greater than 2mA, and the working current is about 200mA. It can only be used when the distribution transformer has AC power.

[0005] Some products use ordinary mobile phone batteries in order to work in the case of AC power failure of the distribution transformer, but the monitoring time that these solutions can achieve can only guarantee 24 hours

However, irrigation and drainage transformers in rural areas usually need to be cut off for three to four months in winter. In order to achieve long-term working ability, some schemes are equipped with complex and expensive equipment such as solar cells, which not only increases the cost of the system, but also increases the installation cost. very inconvenient to use

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