Inductive energy storage type temperature sensor

Abstract

The invention discloses an induction energy storage type temperature sensor, which comprises an energy induction module, an electric energy storage device, a voltage monitoring module, a DC-DC power supply chip, an MCU processor, a temperature sensor and a wireless chip, and is characterized in that the energy induction module is connected with the electric energy storage device through a diode,the electric energy storage device is connected with the voltage monitoring module, the voltage monitoring module is connected with the DC-DC power supply chip, the DC-DC power supply chip supplies power to the MCU processor, the temperature sensor and the wireless chip, and the MCU processor is connected with the temperature sensor and the wireless chip. According to the invention, different types of energy induction modules are used to convert a variable magnetic field emitted by power distribution network equipment into a voltage, or convert a temperature difference between a cable head, a cable core and other components and an ambient temperature into a voltage to supply power to the temperature sensor.

Description

technical field [0001] The invention belongs to the technical field of temperature sensors, in particular to an inductive energy storage type temperature sensor. Background technique [0002] In China, most of the medium and low-voltage distribution networks adopt the neutral point ungrounded or small resistance grounding system. When a single-phase ground fault occurs, the cable insulation has actually broken down and generated heat. However, due to the large grounding resistance and small grounding current, distribution The network background monitoring system and relay protection device cannot be removed. The power supply department cannot know the actual situation of the equipment until the fault develops into a serious situation of burning, smoking or even explosion. [0003] The temperature measurement of the original equipment is only a means to monitor the insulation aging and operating status of the power distribution equipment itself. Due to the lack of detection o...

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Problems solved by technology

[0002] In China, most of the medium and low-voltage distribution networks adopt the neutral point ungrounded or small resistance grounding system. When a single-phase ground fault occurs, the cable insulation has actually broken down and generated heat. However, due to the large grounding resistance and small grounding current, distribution The network background monitoring system and relay protection device cannot be removed. The power supply department will not know the actual situation of the equipment until the fault develops into a serious situation of burning, smoking or even explosion.

[0003] The temperature measurement of the original equipment is only a means to monitor the insulation aging and operating status of the power distribution equipment itself. Due to the lack of detection of the core temperature and ambient temperature and humidity, it is impossible to quickly locate the fault location when an accident occurs.

[0004] The wiring of high-voltage cabinets and station areas is complicated. When a power failure occurs, the labor force of the electric staff is high, the work efficiency is low, and the maintenance cost is too high. Real-time monitoring of the deterioration degree and operating status of key parts of electrical equipment cannot be achieved. It is impossible to intelligently manage the urban distribution network

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