Cross power supply structure of nuclear power station control room man-machine interface equipment

Abstract

The invention discloses a cross power supply structure of nuclear power station control room man-machine interface equipment. The cross power supply structure comprises a first column power supply structure, a second column power supply structure and a third column power supply structure, wherein each column of power supply structure comprises a first power supply and a second power supply, the first power supply and the second power supply are connected to a bus of a power supply cabinet corresponding to the column through a switching circuit, and the output end of the power supply cabinet isconnected to the man-machine interface equipment corresponding to the column; and at least one power supply of each column of power supply structure is also connected to buses of other columns of power supply cabinets so as to realize cross power supply among different columns of power supply structures. Compared with the prior art, the power supply problem of multiple columns of equipment can beeffectively solved, the reliability and safety of control room man-machine interface equipment are improved, the human factor failure probability of control room operation personnel is reduced, and the operation safety of a nuclear power station is improved.

Description

technical field [0001] The invention relates to the field of power supply for nuclear power plants, in particular to a cross power supply structure for man-machine interface equipment in a control room of a nuclear power plant. Background technique [0002] Considering that the operation of nuclear power plants involves the safety of nuclear accidents, the handling of the public environment, and the technical complexity of the nuclear power plant system itself, it is often necessary to strictly analyze the functions and operational tasks of the power plant during the design process. The nuclear power plant control room is the monitoring center of the nuclear power plant. The human-machine interface equipment in it is the centralized place for the information and control of the entire nuclear power plant, and plays a decisive role in the safe operation of the nuclear power plant. Whether in normal or abnormal working conditions, the operator monitors and controls the nuclear ...

AI Technical Summary

Problems solved by technology

When a column of power fails, the human-machine interface equipment in the control room powered by this column will lose power, and only the other column of human-machine interface equipment can be used. The means for power station monitoring and control are limited, which is not conducive to the safe operation of the power station

Moreover, according to the probability analysis of the nuclear power plant, there is a possibility that the power supply of both columns will lose power. At this time, in order to ensure the safety of the power plant, the important equipment of the power plant and the limited man-machine interface equipment in the control room are powered by emergency equipment, and the monitoring and control of the power plant can only be Guarantee the bottom line of safety

Moreover, the emergency power supply capacity is limited. If the power supply cannot be restored within the specified time, only limited human-machine interface equipment can be used to shut down the power station, which increases the shutdown rate of the power station and reduces the economical efficiency of the power station operation.

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