Uninterrupted double-circuit-breaker high-voltage switch cabinet

Abstract

The invention relates to an uninterrupted double-circuit-breaker high-voltage switch cabinet. The high-voltage switch cabinet comprises a main bus chamber, a main supply circuit breaker chamber, a standby circuit breaker chamber, a cable chamber, a main secondary control chamber and a standby secondary control chamber, wherein one side of the main bus chamber is electrically connected with the cable chamber, a right side of the cable chamber is provided with the standby circuit breaker chamber, the standby circuit breaker chamber is electrically connected with the main secondary control chamber, a left side of the cable chamber is provided with the main supply circuit breaker chamber, the main supply circuit breaker chamber is electrically connected with the standby secondary control chamber, a left side of the main bus chamber is provided with ventilation equipment, and a right side of the main bus chamber is provided with an air outlet. The high-voltage switch cabinet is advantaged in that the high-voltage switch cabinet is formed by splicing and combining functional compartments, has characteristics of standardization and modularization, good protection performance, good fault isolation performance and enough heat dissipation space, can realize switching between a main supply circuit breaker and a standby circuit breaker under the condition of no power failure through powersupply from the standby circuit breaker and a mutual inductor to an outgoing cable, and is convenient to overhaul.

Description

technical field [0001] The invention relates to a high-voltage switchgear, in particular to a high-voltage switchgear with double circuit breakers without power failure. Background technique [0002] The existing high-voltage switchgear has exposed many problems in actual operation, which restricts the improvement of power supply reliability: First, the ventilation and heat dissipation effect of the cabinet space is average. When the operation reaches 80% of the rated current, the temperature rise generally exceeds the national standard requirement of 70K . The second is that the switchgear needs to be powered off for maintenance and repair; the replacement of current transformers and other components in the cabinet also needs to be powered off; the third is that the load cannot be flexibly adjusted among the busbars of each section; The entire busbar is cut off. Contents of the invention [0003] The purpose of the present invention is to provide a high-voltage switchge...

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Problems solved by technology

[0002] The existing high-voltage switchgear has exposed many problems in actual operation, which restricts the improvement of power supply reliability: First, the ventilation and heat dissipation effect of the cabinet space is average. When the operation reaches 80% of the rated current, the temperature rise generally exceeds the national standard requirement of 70K

The second is that the switchgear needs to be powered off for maintenance and repair; the replacement of current transformers and other components in the cabinet also needs to be powered off; the third is that the load cannot be flexibly adjusted among the busbars of each section; Entire bus failure

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