Carrier signal transmission device of three-phase four-wire intelligent meter without null line

Abstract

The invention discloses a carrier signal transmission device of a three-phase four-wire intelligent meter without a null line. The carrier signal transmission device comprises a concentrator carrier signal transmission part and an intelligent meter carrier signal transmission part. The concentrator carrier signal transmission part comprises a concentrator, a concentrator three-phase line input end, a concentrator three-phase output end, a concentrator fuse protector, a concentrator capacitor and a concentrator null line. The intelligent meter carrier signal transmission part comprises an intelligent meter, an intelligent meter three-phase input end, an intelligent meter fuse protector, an intelligent meter capacitor and an intelligent meter null line. The device effectively solves the technical problem of the null line erection. In the aspect of materials, at 0.1 microfarads, a cost is about a few fen. Each one of bulk-purchased fuse protectors has a price of less than a few mao. The device has signal acquisition stability, a high success rate, can be installed conveniently and can be directly arranged at the tail of the intelligent meter in parallel. The device greatly shortens man-hour.

Description

technical field [0001] The invention relates to a carrier signal transmission device under the condition that a three-phase four-wire smart meter has no neutral wire. Background technique [0002] With the popularization of smart watches, the popularity of smart watches has been realized except for some agricultural row users. One of the main reasons for the lack of popularization of agricultural row smart meters is that most of the agricultural row stations are three-phase three-wire systems, because the mechanical meters used to measure agricultural row wells are all three-phase two-component and have no neutral wire. The smart meter is three-phase four-wire, and the carrier signal must be transmitted by the neutral wire. Rely on the erection of the neutral line to solve the transmission problem of the carrier signal. The erection of the neutral line needs to consume a considerable amount of material costs, labor costs, young crop compensation fees, and land occupation f...

AI Technical Summary

Problems solved by technology

The erection of the neutral line needs to consume a considerable amount of material costs, labor costs, young crop compensation fees, and land occupation fees. What’s more, it needs the coordination of the village committee and the local government to solve the problem. There are also aging telephone poles in some rural areas. The problem brings considerable safety hazards to the construction. In summary, it is very difficult to erect the zero line

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