A power supply device for electricity safety acquisition module

Abstract

The invention discloses a power supply device for an electric safety acquisition module. The power supply device comprises a three-phase rectifying energy taking module and a power supply mode adjusting module. The three-phase rectifying energy taking module comprises an iron core, an energy taking coil, a compensation coil, an EMI (Electromagnetic Interference) filter, an overvoltage protection circuit, a rectifier-filter circuit and a control module. The power supply adjusting control module is matched with a lithium battery through a super-capacitor, and is adjusted by a control circuit to obtain three power supply modes for supplying power to a load. By adopting the wound iron core, air gaps are prevented from being formed in the iron core, and then vibration noise is prevented; under the action of the control circuit, the energy taking coil is matched with the compensation coil, meanwhile, a PWM (Pulse Width Modulation) alternating-current chopper circuit is added to the compensation coil loop, and counter magnetic flux is adjusted by adjusting the magnitude of the rear-end voltage, so that deep saturation of the energy taking magnetic core in high current is avoided, and energy is taken within a large current range in a distribution cabinet with complex environment. The super-capacitor is matched with the rechargeable battery, so that the power supply reliability, stability and continuity of the energy taking device are improved.

Description

technical field [0001] The invention relates to a power supply device for an electricity safety collection module, which belongs to the technical field of electricity safety management. Background technique [0002] Once an important power user has a power outage, it will cause serious consequences, so the reliable power supply of important power users needs to be guaranteed first. The electricity safety acquisition module monitors the voltage quality, voltage, current, equipment operating temperature, ambient temperature and humidity, switch status and other data of important users to ensure the reliability of power supply for important users. [0003] In order to supply power to the medium and low voltage online monitoring and acquisition module working on the user side of the distribution line, it is necessary to develop a long-term stable and reliable power supply. There are generally four power supply methods for this purpose: battery, photovoltaic-battery power supply...

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