CN102255339B

CN102255339B - Quick start method for power-supply system of CRDM (control rod drive mechanism)

Info

Publication number: CN102255339B
Application number: CN 201110089789
Authority: CN
Inventors: 黄定忠; 俞高伟; 沈志华; 吴超群; 王宏印; 张甬; 袁育龙
Original assignee: SHANGHAI KEDA ELECTRIC CONTROL CO Ltd; China Nuclear Power Engineering Co Ltd; Shanghai Power Equipment Research Institute Co Ltd
Priority date: 2011-04-12
Filing date: 2011-04-12
Publication date: 2013-09-25
Anticipated expiration: 2031-04-12
Also published as: CN102255339A

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

A kind of quick start method of control rod drive mechanisms (CRD) power-supply system

Technical field

The present invention relates to the startup method of motor generator group of the band flywheel of a kind of nuclear power plant control rod drive mechanisms (CRD) power-supply system.

Background technology

Control rod drive mechanisms (CRD) is the major control parts of nuclear power plant's reactor pressure vessel.The task of control rod drive mechanisms (CRD) power-supply system is to guarantee to keep its normal running to the control rod drive mechanisms (CRD) power supply.The job stability of control rod drive mechanisms (CRD) power-supply system, long-time running reliability, dynamic response and even good maintainability play decisive role to control rod drive mechanisms (CRD) and then to the normal operation of reactor-loop, and safety and the economical operation of nuclear power station is significant.

The control rod drive mechanisms (CRD) power-supply system comprises the motor generator group of two band flywheels, exports behind two set grid-connections when normally moving.Every unit all can satisfy the specified operation of all control rod drive mechanisms (CRD).The control rod drive mechanisms (CRD) power-supply system mainly adopts direct Starting mode, namely manually boot two units respectively, synchronous device sends the instruction same period according to the identical relation of output voltage, frequency and the phase place etc. of two set generators and manually is incorporated into the power networks then, when getting nowhere when being incorporated into the power networks, stop fully wherein restarting and the same period behind a unit, so circulation is until being incorporated into the power networks successfully again.The shortcoming of this Starting mode is to expend the plenty of time, and the complete manual operation of whole starting process, and efficient is lower, produces very high starting current owing to directly start meeting simultaneously, and also there is considerable influence in the life-span that continuous several times starts unit.

Summary of the invention

The purpose of this invention is to provide a kind of quick simultaneous interconnecting method, reach the quick startup of control rod drive mechanisms (CRD) power-supply system and the ability of output.

In order to achieve the above object, technical scheme of the present invention has provided a kind of quick start method of control rod drive mechanisms (CRD) power-supply system, it is characterized in that, step is:

Step 1, with a unit starting of control rod drive mechanisms (CRD) power-supply system;

Step 2, after the operation of set steady and output, manually with No. two units input breaker closings, No. two unit motor get electric back rotating speed from No. two unit power source buss and rise, and drag No. two unit flywheels and drive No. two set generators operations;

Step 3, in the startup accelerator that No. two unit motors speed rise, No. two the unit automatic voltage regulator puts into operation in good time automatically, exciting current is started from scratch and is grown steadily, No. two set generator is built pressure steadily;

Step 4, in the process that No. two set generator end frequencies rise, synchronous device detects output voltage, frequency and the phase relation of a unit and No. two units automatically, whether allows the same period at the appointed time, if do not allow the same period, then execution in step 5, if allow the same period, then execution in step 6;

Step 5, the automatic disjunction of No. two unit input circuit breakers, this moment, the inertia of No. two unit flywheels still can keep No. two set generator output in allowing range of operation, the back No. two units input of of short duration time-delay circuit breaker closes a floodgate rebound execution in step then 4 automatically again;

Step 6, No. two unit output circuit breaker automatic closings, No. two unit starting is finished, and the control rod drive mechanisms (CRD) power-supply system successfully puts into operation.

Advantage of the present invention is: a kind of quick simultaneous interconnecting method is provided, has reached the quick startup of control rod drive mechanisms (CRD) power-supply system and the ability of output.

Description of drawings

Fig. 1 is the electrical schematic diagram of control rod drive mechanisms (CRD) power-supply system;

Fig. 2 is a kind of duty cycle flow chart of quick simultaneous interconnecting method of control rod drive mechanisms (CRD) power-supply system.

Embodiment

Specify the present invention below in conjunction with embodiment.

Embodiment

As shown in Figures 1 and 2, the invention provides a kind of quick start method of control rod drive mechanisms (CRD) power-supply system, the steps include:

Step 1, a unit motor start-up

After the unit 2 of control rod drive mechanisms (CRD) power-supply system is ready, manually a unit input circuit breaker 3 is closed a floodgate, a unit motor 4 gets electric back rotating speed from a unit power source bus 1 and rises, and drags 6 operations of set generator of unit flywheel 5 drives.

Step 2, a set generator excitation drop into

After a unit motor 4 operated in rated condition, No. one unit automatic voltage regulator 8 put into operation automatically, and exciting current is started from scratch and grown steadily, and set generator 6 is built steadily and pressed and set end voltage is started from scratch and grown steadily.

Step 3, a set generator are incorporated into the power networks

When stable and unit satisfies rated condition when set generator 6 terminal voltage, unit output circuit breaker 7 automatic closings of a set generator 6, a unit 2 starts to be finished.

Step 4, No. two unit motor start-ups

After No. two unit 2 ＇ of control rod drive mechanisms (CRD) power-supply system are ready, manually No. two unit input circuit breaker 3 ＇ are closed a floodgate, No. two unit motor 4 ＇ get electric back rotating speed from No. two unit power source bus 1 ＇ and rise, and drag No. two set generator 6 ＇ operations of No. two unit flywheel 5 ＇ drives.

Step 5, No. two set generator excitations drop into

In the startup accelerator of No. two unit motor 4 ＇ rotating speeds risings, No. two unit automatic voltage regulator 8 ＇ put into operation in good time automatically, and exciting current is started from scratch and grown steadily, and No. two set generator 6 ＇ build pressure steadily.

Step 6, the same period

In the process of No. two set generator 6 ＇ end frequencies rising, synchronous device 9 detects the relations such as output voltage, frequency and phase place of units 2 and No. two unit 2 ＇ automatically, whether allows the same period at the appointed time, if not, then execution in step 7, if then execution in step 8.

Step 7, No. two units close a floodgate automatically again

The automatic disjunction of No. two unit input circuit breaker 3 ＇, this moment, the inertia of No. two unit flywheel 5 ＇ still can keep No. two set generator 6 ＇ output in allowing range of operation, the back No. two units input of of short duration time-delay circuit breaker 3 ＇ close a floodgate automatically again, and execution in step 6 then.

Step 8, No. two set generators are incorporated into the power networks

After the same period, instruction was sent, No. two unit output circuit breaker 7 ＇ automatic closings, No. two unit starting is finished, and the control rod drive mechanisms (CRD) power-supply system successfully puts into operation.

A unit of control rod drive mechanisms (CRD) power-supply system and structure and the principle of No. two units are identical, and the boot sequence of two units can be put upside down.

No matter the motor generator group that is incorporated into the power networks of control rod drive mechanisms (CRD) power-supply system or other many needs can adopt method provided by the invention.

Claims

1. the quick start method of a control rod drive mechanisms (CRD) power-supply system is characterized in that, step is:

Step 1, the unit (2) of control rod drive mechanisms (CRD) power-supply system is started;

Step 2, when a unit (2) stable operation and output after, a unit (2) generator is finished and is incorporated into the power networks, manually No. two unit input circuit breakers (3 ＇) are closed a floodgate, No. two unit motor (4 ＇) get electric back rotating speed from No. two unit power source buss (1 ＇) and rise, and drag No. two unit flywheels (5 ＇) No. two set generators of drive (6 ＇) operation;

Step 3, in the startup accelerator that No. two unit motor (4 ＇) rotating speed rises, No. two unit automatic voltage regulators (8 ＇) put into operation in good time automatically, exciting current is started from scratch and is grown steadily, No. two set generators (6 ＇) are built pressure steadily;

Step 4, in the process that No. two set generators (6 ＇) ends frequency rises, synchronous device (9) detects output voltage, frequency and the phase relation of a unit (2) and No. two units (2 ＇) automatically, whether allow the same period at the appointed time, if do not allow the same period, then execution in step 5, if allow the same period, then execution in step 6;

Step 5, No. two unit input circuit breakers (3 ＇) disjunction automatically, the inertia of No. two unit flywheels this moment (5 ＇) still can keep No. two set generators (6 ＇) output in allowing range of operation, the back No. two units input circuit breakers of of short duration time-delay (3 ＇) close a floodgate automatically again, rebound execution in step then 4;

Step 6, No. two unit output circuit breaker (7 ＇) automatic closings, No. two units (2 ＇) start to be finished, and No. two units (2 ＇) generator is finished and is incorporated into the power networks, and the control rod drive mechanisms (CRD) power-supply system successfully puts into operation.