Fast access device and method for mobile diesel generator set

Abstract

The invention provides a fast access device for a mobile diesel generator set. The device is used on a mobile diesel generator set outside an electrical factory building and is matched with a circuitbreaker in the electrical factory building that connects an emergency diesel generator set and an emergency safety bus together; the device comprises an outdoor junction box arranged outside the electrical factory building, a cable cabinet arranged in the electrical factory building and an emergency cable connected with the outdoor junction box and coiled in the cable cabinet; among them, after the emergency diesel generator set fails and the cable connected with the emergency diesel generator set on the circuit breaker is disconnected, the emergency cable in the cable cabinet is stretched towards the circuit breaker and connected with one end of the circuit breaker disconnected but connected with the emergency diesel generator set, so as to realize the connection between the mobile dieselgenerator and the emergency safety bus and start power supply. By implementing the invention, on the premise of not changing the existing workshop space of the power plant, the access time of the mobile diesel generator set after the accident is effectively shortened, and the manpower investment of related work is reduced.

Description

technical field [0001] The invention relates to the technical field of mobile diesel generator set access, in particular to a mobile diesel generator set quick access device and method. Background technique [0002] After the Fukushima nuclear accident, domestic nuclear power plants increased the reliability of emergency power supply by adding mobile emergency power supplies. Under accident conditions beyond the design basis, the mobile emergency power supply can play a role in short-term power supply protection after the failure of the original mobile diesel generator set, and alleviate the consequences of serious accidents. Most of the mobile emergency power supplies in nuclear power plants use mobile diesel generators. When the whole plant loses power and cannot be restored in a short time, and the additional diesel generators cannot be connected, the medium-voltage mobile diesel generators can be connected manually. The emergency medium voltage busbar provides power for...

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Problems solved by technology

[0004] However, there are deficiencies in the connection methods of the above two kinds of mobile diesel generator sets. more than 10 people are required for entry), increasing the number of left-behind emergency personnel during nuclear power plant accidents

According to statistics, power plants also take a long time (for example, the connection time is 2 to 6 hours), which is not conducive to rescue optimization; in the second method, it is necessary to add an outlet interval to the switchboard of the existing emergency bus in the nuclear power plant It is used to install circuit breakers, which has high requirements on the space of the power plant building, and the space margin of the electrical plant building of some nuclear power plants in operation is small, and the layout space cannot meet the expansion requirements of the emergency switchboard

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