Pump tripping logic control method for electrically driven feed pump of nuclear power plant CPR1000 unit
An electric feed pump, logic control technology, applied in pump control, machine/engine, pump, etc., can solve problems such as unreasonable logic design of electric feed pump interlock control, reactor jumping, overpower, etc., to avoid accidents from continuing. enlarged effect
Active Publication Date: 2022-01-04
SUZHOU NUCLEAR POWER RES INST +2
View PDF4 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The reason for the sudden drop in speed of No. 1 electric main feed water pump is the failure of the position sensor of the spoon tube, which caused the position of the spoon tube to suddenly drop to 0%, resulting in a sudden drop in the speed of the pump. When the work output is lost, the standby pump cannot be interlocked and started in time, resulting in the failure of the standby pump to start automatically. If the main control operator fails to intervene in time, there will be a risk of overpower in the primary circuit or even a reactor jump. Therefore, the existing The control logic cannot meet the water supply requirements of the secondary circuit when the unit is running at full power
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0041] In order to solve the problem that the pump jump control logic of the existing electric feed water pump cannot meet the water supply requirements of the secondary circuit when the unit is running at full power, the present invention provides a pump jump logic control method for the electric feed water pump of the nuclear power plant CPR1000 unit, so that when the electric When the output of the main feed water pump is insufficient, the standby pump can be started immediately to reduce the disturbance of the secondary circuit feed water and avoid accidents such as over-power of the primary circuit or forced landing of the unit's electric power.
[0042] Specifically, refer to figure 1, is a schematic flow chart of...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a pump tripping logic control method for an electrically driven feed pump of a nuclear power plant CPR1000 unit. The pump tripping logic control method comprises the following steps of monitoring an electric power signal of a nuclear power unit in real time to obtain the total electric power of the unit; monitoring the running state of the main electrically driven feed pump in real time, and obtaining the running state information of the main electrically driven feed pump; judging whether a standby pump starting condition is met or not according to the total electric power of the unit and the running state information of the main electrically driven feed pump; if yes, controlling the standby pump to start; and if not, keeping the standby pump in a hot standby state. The total electric power of the nuclear power unit and the running state information of the main electrically driven feed pump are monitored and judged in real time, and the standby pump is started immediately when the standby pump starting condition is met, so that the standby pump is started when the rotating speed control loop of the main electrically driven feed pump is abnormal, water supply of a secondary loop is not affected, overpower or tripping of a loop during full-power operation of the unit is avoided, more time is saved for operators to take intervention measures, and continuous expansion of accidents is avoided.
Description
technical field [0001] The invention relates to the technical field of nuclear power unit water pump control, and more specifically relates to a jump logic control method for an electric feed water pump of a nuclear power plant CPR1000 unit. Background technique [0002] The electric main feed water pump (APA pump) of the secondary circuit of the nuclear power plant provides the water supply function for the steam generator. The CPR1000 nuclear power unit is equipped with three electric main feed water pumps. When an electric main feedwater pump trips or fails, the control logic will automatically interlock and start the standby pump to meet the water supply function of the secondary circuit. [0003] During the full power operation of Unit 1 of a nuclear power plant, No. 1 and No. 3 electric main feedwater pumps are running online, and No. 2 electric main feedwater pumps are in hot standby state. Due to the abnormality of the spoon tube control circuit of No. 1 electric ma...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/03F04B23/04F04B49/06F04B51/00
CPCF04B17/03F04B51/00F04B49/06F04B23/04Y02E30/00
Inventor 唐磊甘长贤赵志玲胡琰军刘帅
Owner SUZHOU NUCLEAR POWER RES INST