Anti-theft alarming device of transformer

The invention discloses an anti-theft alarming device of a transformer. The anti-theft alarming device comprises a voltage sampling device, a signal processing device, a transformer signal collecting and processing device, an alarming device and an automatic short-message alarming device. The signal processing device comprises a first rectification filtration module, a first opto-isolating module, a first comparison module, a second rectification filtration module, a second opto-isolating module and a second comparison module. The automatic short-message alarming device is adopted to the anti-theft alarming device of the transformer, the signal processing device is particularly divided into components, each component is connected with the related components, and the anti-theft alarming device has the advantages that main machine alarming is achieved, meanwhile, a worker can be notified in a short-message mode, the specified accident position can be determined, the cost is low, and the working performance is good.