Novel energy supply mode of electronic current transformer

Abstract

The invention discloses a novel energy supply mode of an electronic current transformer. The energy supply mode comprises a general energy supply mode of supplying energy to an acquisition unit through a laser power supply and simultaneously developing an electronic current transformer in which an energy taking coil is used as a main working energy supply carrier and the laser power supply is usedas an auxiliary energy supply mode. According to the invention, through improvement and promotion of the energy supply mode of the current transformer, the usability of the current transformer is greatly improved, the load of a merging unit in work and operation is liberated, the damage rate of the laser power supply is reduced, the laser power supply is removed as a vulnerable part list, and thelaser power supply has a wide market prospect and is suitable for popularization.

Description

technical field [0001] The invention relates to a current transformer used in the field of electric power industry, in particular to a pillar type electronic current transformer. Background technique [0002] Electronic current transformer is one of the key equipment to meet the development of intelligent, modular, multi-functional and maintenance-free high-voltage electrical equipment in modern power systems, and it is also the need for automation and digital development of power systems. Modern microcomputer comprehensive measurement and protection devices and instruments no longer need transformers to provide energy to work. It only needs transformers to collect complete, timely and accurate primary current information and transmit them through optical signals. The collection of collected data used The unit needs auxiliary energy supply. The auxiliary energy supply method currently used is the laser power supply method, but the laser power supply will be damaged during lo...

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Problems solved by technology

Modern microcomputer comprehensive measurement and protection devices and instruments no longer need transformers to provide energy to work. It only needs transformers to collect complete, timely and accurate primary current information and transmit them through optical signals. The collection of collected data used The unit needs auxiliary energy supply. The auxiliary energy supply method currently used is the laser power supply method, but the laser power supply will be damaged during long-term work, especially the laser power supply will frequently fail after a certain number of years

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