All-optical fiber current transformer integrated with isolation circuit breaker

Abstract

The invention relates to an all-optical fiber current transformer integrated with an isolation circuit breaker. The all-optical fiber current transformer comprises a primary side sensing unit, a fitting, a suspension insulator and a T-shaped flange, wherein the primary side sensing unit is arranged inside the fitting; the fitting is of an annular structure and the bottom of the fitting is fixedly arranged at one end of the suspension insulator; the outer side surface of the arm, perpendicular to the central axis of the arm, of the T-shaped flange is fixedly connected with the flange of the isolation circuit breaker; the arm, where the central axis is located, of the T-shaped flange is connected with a high-voltage bus and penetrates through the annular structure of the fitting; the back of the annular structure of the fitting is fixedly arranged on the inner side surface of the arm, perpendicular to the central axis, of the T-shaped flange. The all-optical fiber current transformer integrated with the isolation circuit breaker realizes the integration of the isolation circuit breaker and the all-optical fiber current transformer, and is capable of conforming to the integration and intelligence requirements of a new generation intelligent substation.

Description

technical field [0001] The invention relates to the technical field of current transformers, in particular to an all-optical fiber current transformer integrated with an isolation circuit breaker. Background technique [0002] The current sensor / transformer is an important device for relay protection and electric energy measurement in the power system. It is used to measure the current in transmission and send the measured current to the measuring instrument and relay protection device for measurement and protection. The device provides a current signal. The long-term stability, reliability and safety of current transformers are closely related to the safe and stable operation of power systems. With the development of power systems towards large capacity, ultra-high voltage and ultra-high voltage, the requirements for miniaturization, intelligence and high reliability of power equipment are getting higher and higher. Due to the increase of the system voltage, the tradition...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the connection between the isolation circuit breaker and the all-fiber optic current transformer in the traditional technology is bulky and difficult to install and maintain, which lead to the problems that do not meet the requirements of the intelligent substation, and provides an all-fiber optic current transformer integrated with the isolation circuit breaker, which can Realize the integration of isolation circuit breaker and all-optical current transformer, meet the requirements of integration and intelligence of the new generation of smart substation, and have the advantages of simple installation, small footprint and cost saving

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