High-voltage-insulation high-frequency-induction energy-conducting power supply device

Abstract

The invention discloses a high-voltage-insulation high-frequency-induction energy-conducting power supply device which is characterized by comprising a plurality of electromagnetic induction coils L which are placed along a central axis, wherein two ends of the lowest low-voltage-side electromagnetic induction coil L are connected with an output end of a high-frequency driving power supply; two ends of the uppermost high-voltage-side electromagnetic induction coil L are connected with an input end of an AC / DC (alternating current / direct current) power converter; two ends of each of the other electromagnetic induction coils L are connected with a capacitor C; and specific-high-frequency alternating-current electrical energy generated by the high-frequency driving power supply is transmitted from the low voltage side to the high voltage side through the high-frequency electromagnetic-induction resonance of the plurality of electromagnetic induction coils L and the capacitors C, and then converted to direct-current electrical energy by the AC / DC power converter, so that power-using units at the high voltage side in on-line detecting and monitoring equipment or active optical current transformers can be supplied with electrical energy. The high-voltage-insulation high-frequency-induction energy-conducting power supply device has the advantages of large power supply capacity, low price, long service life, high high-voltage-insulation capability, stable performance and the like.

Description

technical field [0001] The invention relates to a high-voltage insulation high-frequency induction energy transfer power supply device, which is used in active photoelectric current electric transformers and various high-voltage on-line detection and monitoring equipment that require high-voltage insulation power supply to realize energy transmission and power supply in a high-voltage insulation manner. Background technique [0002] The current transformer plays a very important role in the power system and is a core device in the power system. Photoelectric current transformers with strong high-voltage insulation capabilities are an urgent need for the development of smart grids. Optical fiber current transformer (OCT) has broad application prospects due to its good anti-electromagnetic interference performance, high measurement accuracy, large dynamic range, wide frequency response range, small size, light weight, cheap price, and convenient interface with digital devices....

AI Technical Summary

Problems solved by technology

"Electromagnetic induction power supply with primary current on the high-voltage side" has insufficient power supply energy when the primary current is relatively small, forming a power supply dead zone that cannot work. When the primary current is large and short-circuited, there is too much power supply energy, which makes it difficult to discharge and damage the power supply circuit. ;Although the performance of laser and ultrasonic power supply is stable, it can well meet the stability requirements of power supply, but the power supply energy is relatively small, and the energy saving and anti-interference requirements for measurement and photoelectric transmission systems are very high, and the price is too expensive and easy to age , the long-term operating life cannot meet the requirements; the pneumatic energy supply also has gas leakage and the long-term operating life cannot meet the requirements

The high-voltage side energy supply of photoelectric hybrid current transformer is the core technical problem that plagues its practical application

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