Novel full-fiber current transformer of isolation circuit breaker type

Abstract

The invention discloses a novel full-fiber current transformer of an isolation circuit breaker type, and the current transformer comprises a circuit breaker arc extinguish chamber (1), a full-fiber current transformer sensitive ring (2), a wiring terminal board (3), a fiber composite bushing (4), a full-fiber current transformer electrical unit (5), a polarization maintaining fiber (6), an insulating ring (7), a conducive supporting flange (8), and a transition flange (9). Through the integration of a full-fiber current transformer and an isolation-type circuit breaker, the current transformer simplifies the main power line while completing the measurement of an external current, reduces the occupied space, and improves the stability of a power grid. In addition, the polarization maintaining fiber (6) in the full-fiber current transformer is embedded into the fiber composite bushing (4) which is used for supporting the isolation-type circuit breaker, so there is no need of other insulating connection parts. The current transformer is simple and reliable in insulation, and is high in integration degree. Compared with a conventional current transformer, the current transformer is high in accuracy, is large in measurement range, and is good in transient characteristics.

Description

technical field [0001] The invention relates to the field of isolated circuit breakers and transformers, and relates to a novel isolated circuit breaker type all-optical current transformer. Background technique [0002] With the development of electric power equipment in the direction of intelligent integration, the open application method of circuit breaker + disconnector + current transformer in the traditional power system can no longer meet the development of the power grid situation. Inadequacies in engineering technology such as low combination degree and high investment cost. [0003] In response to the development needs of the new generation of smart grid, the highly intelligent and integrated power equipment is imminent. Under this application background, the isolated circuit breaker first realizes the functional combination of the circuit breaker and the isolating switch, which has reliable operation and high operational safety. , small maintenance workload, shor...

AI Technical Summary

Problems solved by technology

[0002] With the development of electric power equipment in the direction of intelligent integration, the open application method of circuit breaker + disconnector + current transformer in the traditional power system can no longer meet the development of the power grid situation. Inadequacies in engineering technology such as low combination degree and high investment cost

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