Novel primary and secondary fusion vacuum circuit breaker pole

Abstract

The invention provides a novel primary and secondary fusion vacuum circuit breaker pole. The structure of the pole includes a vacuum arc-extinguishing chamber, an epoxy resin casting body, a flexibleconnection, an insulated pull rod assembly, a lower outgoing line, a current sensor, a mutual inductor secondary line, a capacitive voltage sensor and a capacitive energy taking device. Through epoxyresin automatic gelation process APG, the pole can be prepared through integrated casting, the fusion depth of the capacitive voltage sensor and the capacitive energy taking device can be further increased, and current and voltage protecting, measuring and metering equipment, capacitive energy taking power supply equipment depth fusion and vacuum arc-extinguishing chamber integration can be realized, and structural design integration can be achieved; and the protection functions of the equipment can be enhanced, and interactivity and relevance can be improved.

Description

technical field [0001] The invention relates to a novel primary and secondary fusion vacuum circuit breaker pole, which belongs to the technical field of electrical equipment. Background technique [0002] In the current power system, as the boundary between the secondary and primary equipment industries is becoming less and less obvious, some functions of the secondary equipment are gradually transferred to the primary equipment and integrated into a more integrated intelligent unit. The traditional vacuum circuit breaker pole structure does not have the functions of intelligent information monitoring and line fault judgment, and has gradually failed to meet the construction requirements of modern intelligent power systems; Additional lines will not only increase the construction workload and increase the cost of installation and operation, but if there is a mistake in wiring, it will also affect the normal operation of the power system, making troubleshooting difficult. ...

AI Technical Summary

Problems solved by technology

The current transformer needs to connect the impedance in series on the secondary side of the transformer to obtain the voltage and power. The voltage on the impedance is proportional to the primary current, so the power supply based on the current transformer technology is not easy to achieve voltage stabilization.

Voltage transformers mainly include electromagnetic voltage transformers and capacitive voltage transformers. Electromagnetic voltage transformers are bulky, inconvenient to install, and costly

In addition, the nonlinear impedance and inherent capacitance of the traditional capacitive voltage transformer sometimes cause ferromagnetic resonance in the capacitive voltage transformer, so it is necessary to use a damping device to suppress the resonance. In order to improve the load capacity and reduce the load on the relay, etc. Influenced by the measurement, a series compensation reactor is required at the input end of the medium-voltage transformer, which increases the complexity of the transformer

Images