Power supply technology of 10KV electronic measuring system

Abstract

The invention provides a power supply technology of a 10KV electronic measuring system in an occasion without a conventional power supply. In a cast insulating material, a 10KV high-voltage insulating wire, a dry high-voltage capacitor and a primary measuring coil of a transformer are sequentially connected in series, the other end of the high-voltage wire is connected with high voltage of a 10KV electric power system, the other end of the primary measuring coil of the transformer is connected with the ground, a secondary measuring coil of the transformer is sequentially connected with an AC filtering rectifier unit and a switch type DC voltage stabilizing module, both ends of the primary measuring coil and the secondary measuring coil of the transformer are respectively bridged with a high-voltage piezoresistor and a low-voltage piezoresistor, and a DC working power supply which can safely, stably and reliably satisfy electric power requirement and has good electromagnetic compatibility can be obtained at the output end of the DC voltage stabilizing module in order to lead an electronic type mutual inductor and an electronic type electric energy measuring circuit board to work.

Description

Technical field [0001] The invention relates to a technology for providing stable working power for a 10KV electronic electric energy metering system, especially in the case where there is no conventional power supply, that is, no power transformer, it can be directly converted from the 10KV electric power system to the electronic electric energy metering system. Stable working power supply, that is, high-voltage energy harvesting technology. Background technique [0002] At present, there are several types of known high-voltage energy harvesting technologies: 1. Current transformer type, that is, a special current transformer is installed on the high-voltage bus. Electric power output, so as to obtain the required working power. But the main disadvantage of this method is that the obtained working power is very unstable, that is, when the current on the bus changes in a large range from a few amperes to thousands of amperes, the output power changes too much and the output...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of poor stability, low safety and poor electromagnetic compatibility of several existing high-voltage energy harvesting technologies, the present invention provides a high-voltage energy harvesting technology, that is, the power supply technology of a 10KV electronic electric energy metering system. The power supply provided is not only stable, but also has good safety and electromagnetic compatibility, and does not have the shortcomings of existing high-voltage energy harvesting technologies

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