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Quick start method for power-supply system of CRDM (control rod drive mechanism)

A technology of drive mechanism and power system, applied in the direction of single-grid parallel feeding arrangement, etc., can solve the problems of high starting current, time-consuming, manual operation, etc.

Active Publication Date: 2011-11-23
SHANGHAI POWER EQUIP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this starting method is that it takes a lot of time, and the entire starting process is completely manual, with low efficiency. At the same time, because direct starting will generate a high starting current, continuous multiple starting also has a great impact on the life of the unit.

Method used

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  • Quick start method for power-supply system of CRDM (control rod drive mechanism)
  • Quick start method for power-supply system of CRDM (control rod drive mechanism)
  • Quick start method for power-supply system of CRDM (control rod drive mechanism)

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Embodiment

[0017] Such as figure 1 and figure 2 As shown, the present invention provides a method for quickly starting a control rod drive mechanism power supply system, the steps of which are:

[0018] Step 1. Start the motor of Unit 1

[0019] When the No. 1 unit 2 of the power system of the control rod drive mechanism is ready, the No. 1 unit input circuit breaker 3 is manually closed, and the motor 4 of the No. 1 unit is powered from the power bus 1 of the No. 1 unit. No. unit flywheel 5 drives No. 1 unit generator 6 to run.

[0020] Step 2. Generator excitation input of Unit 1

[0021] After the motor 4 of the No. 1 unit is running in the rated state, the automatic voltage regulator 8 of the No. 1 unit is automatically put into operation, the excitation current rises steadily from zero, the generator 6 of the No. 1 unit builds up the voltage steadily, and the machine terminal voltage rises steadily from zero. .

[0022] Step 3. Unit 1 generator connected to the grid

[0023] ...

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Abstract

The invention provides a quick start method for a power-supply system of a CRDM (control rod drive mechanism). The method is characterized by comprising the following steps: starting a No.1 unit of the power-supply system of the CRDM; starting a No.2 unit after the No.1 unit runs stably and outputs; in the process that the motor of the No.2 unit starts and accelerates, automatically throwing in excitations by the motor of the No.2 unit, detecting the relationship between output voltages, frequencies, phases and the like of the two generator units and instructing an output breaker of the motorof the No.2 unit to switch on by a synchronizing device so as to finish synchronization; and when the synchronization is unsuccessful, switching on an input breaker of the motor of the No.2 unit automatically in short time, and continuing the detection and sending an order by the synchronizing device so as to finish the synchronization. A quick synchronizing synchronization method is provided, and the quick start and output capacity of the CRDM can be realized.

Description

technical field [0001] The invention relates to a method for starting a motor generating set with a flywheel in a power supply system of a control rod driving mechanism of a nuclear power plant. Background technique [0002] The control rod drive mechanism is the main control part of the reactor pressure vessel of the nuclear power plant. The task of the power supply system of the control rod drive mechanism is to ensure the power supply to the control rod drive mechanism and maintain its normal operation. The working stability, long-term operation reliability, dynamic response and good maintainability of the power supply system of the control rod drive mechanism play a decisive role in the normal operation of the control rod drive mechanism and the primary circuit of the reactor, and are of great importance to the safe and economical operation of the nuclear power plant. Great significance. [0003] The power supply system of the control rod drive mechanism includes two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/40
Inventor 黄定忠俞高伟沈志华吴超群王宏印张甬袁育龙
Owner SHANGHAI POWER EQUIP RES INST
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