Compact intelligent ring main unit

Abstract

The invention provides a compact intelligent ring main unit, relating to the field of power grids. The compact intelligent ring main unit is provided for solving technical problem on realizing five-remote control over power equipment in an intelligent power grid. The compact intelligent ring main unit comprises a ring main unit body, an electronic combined current and voltage transformer, an electronic current transformer and monitoring units. The ring main unit body at least comprises at least one wire inlet unit and at least one wire outlet unit, the electronic combined current and voltage transformer is arranged in each wire inlet unit to collect inlet wire voltage and current signals; the electronic current transformer is installed in each wire outlet unit to collect outlet wire current signals; the number of the monitoring units is matched with the numbers of the electronic combined current and voltage transformer and the electronic current transformer; and each the monitoring unit is electrically connected to one electronic combined current and voltage transformer or one electronic current transformer to obtain parameters detected by the electronic combined current and voltage transformer and the electronic current transformer. The compact intelligent ring main unit disclosed by the invention has the advantages of reduced manufacture cost and convenience for application.

Description

technical field [0001] The invention relates to the field of intelligent power equipment, in particular to a compact intelligent ring network cabinet. Background technique [0002] With the advancement of smart grid construction, how to better conduct online monitoring, data processing, communication and remote control of smart grid power equipment has become a topic of research. In the construction process of the smart grid, real-time monitoring of the operating parameters of the power grid is the basis, and the measurement of the current and voltage of the high-voltage line is the basis of the foundation. Only when the measurement of the voltage and current is realized can the power, harmonics and other parameter. The current measurement method mainly uses electromagnetic transformers. One of its defects is that the output signal is very strong. For example, the current transformer outputs a current signal of 1 ampere or 5 amperes, and the voltage transformer outputs a 10...

AI Technical Summary

Problems solved by technology

In this way, due to the increase of the secondary conversion, the measurement accuracy will be reduced; it will also make the system more complex and the failure rate will increase

In addition, the traditional electromagnetic transformer is large in size, and in the miniaturized ring network cabinet, a special metering cabinet is required, which is really incongruous

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