CN102751743B - Power system no-load paralleling method for reactor control rod driving mechanism - Google Patents
Power system no-load paralleling method for reactor control rod driving mechanism Download PDFInfo
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- CN102751743B CN102751743B CN201210244844.1A CN201210244844A CN102751743B CN 102751743 B CN102751743 B CN 102751743B CN 201210244844 A CN201210244844 A CN 201210244844A CN 102751743 B CN102751743 B CN 102751743B
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Abstract
The invention discloses a power system no-load paralleling method for a reactor control rod driving mechanism, which comprises the following steps: (a) driving a motor generator set 1; (b) powering on a motor generator set 2 and driving a synchronizer; (c) if output voltage, frequency and phase are detected to be equal by the synchronizer within T1, giving a command to enable the two motor generator sets to be in parallel; if not, powering off the motor generator set 2; and (d) if output voltage, frequency and phase of the two motor generator sets are detected to be equal by the synchronizer within T2 after powering-off, giving a command to enable the two motor generator sets to be in parallel; if not, repeating the above steps. By increasing the paralleling process in the decelerating process, the success rate of the no-load paralleling is improved, the greater harm to the motor generator sets and a contactor due to frequent powering-on and powering-off is avoided, and the reliable and steady operation of the power system is ensured.
Description
Technical field
The present invention relates to nuclear power plant reactor technical field of electricity, specifically refer to a kind of unloaded also car method of power-supply system of reactor control rod driving mechanism.
Background technology
In two generation pressure (hydraulic) water heap-type nuclear power plants, generally adopt two cover motor-generator sets parallel connections to power to the power cabinet of rod control system afterwards, through controllable silicon bridge rectifier, then direct voltage is supplied the coil of control rod drive mechanisms (CRD).Because motor is directly by station-service three-phase 380V system power supply, speed governing can not be carried out, and the characteristic of two cover motor-generator sets is identical, usually because phase place can not meet synchronous requirement in unloaded Engagement, need repeatedly and car could success, sometimes even to want about 20 times, that is need to treat and the contactor cut-off/close 20 times of motor-generator sets, cutoff motor-generator sets and contactor and bring larger infringement, also bring larger difficulty to system cloud gray model simultaneously for this frequent.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming above-mentioned prior art, a kind of success rate improving unloaded also car is provided, guarantee the unloaded also car method of the power-supply system of the reactor control rod driving mechanism of the reliable and stable operation of power-supply system.
Object of the present invention is achieved through the following technical solutions: a kind of unloaded also car method of power-supply system of reactor control rod driving mechanism, comprises the following steps:
A () connects the motor power of No. 1 motor-generator sets, thus start No. 1 motor-generator sets, the outlet switch of closed motor-generator sets after its stable operation, and now No. 1 motor-generator sets is in no-load running;
B () connects the motor power treating No. 2 motor-generator sets also, thus start No. 2 motor-generator sets, in the start-up course of No. 2 motor-generator sets, synchronizer puts into operation, and the output voltage of automatic detection 1 and No. 2 motor-generator sets, frequency and phase place, meanwhile, synchronous meter starts to rotate;
C when synchronizer, () detects that in time T1 the output voltage of two cover motor-generator sets, frequency are identical with phase place, then send and car order, closed by the outlet switch of No. 2 motor-generator sets, and two overlap motor-generator sets and car success; When two cover motor-generator sets in time T1 can not be synchronous, then disconnect the motor power of No. 2 motor-generator sets, and enter step (d);
In (d) time T2 after No. 2 motor-generator sets power-off, if synchronizer detects that the output voltage of two cover motor-generator sets, frequency are identical with phase place, then send and car order, the outlet switch of No. 2 motor-generator sets is closed, then connect its motor power, two overlap motor-generator sets and car success; When two cover motor-generator sets in time T2 can not be synchronous, after No. 2 motor-generator sets dead halts, repeat above-mentioned steps, until two overlap motor-generator sets and car success.
Exist in above-mentioned synchronizer employing prior art, its operation principle and the course of work all belong to prior art, do not repeat them here.
Basic conception of the present invention is in tradition and on the basis of car mode, add the Engagement of two motor-generator sets in moderating process, if namely two motor-generator sets at the appointed time can not be synchronous, then disconnect and treating and the power supply of motor-generator sets, make to form speed discrepancy between two motor-generator sets, thus reach synchronous object.
Above-mentioned time T1 and T2 determines according to device characteristics and debugging test, after determining the equipment selected, carry out repeatedly debugging test and record result, thus the time required when showing that several two groups of motor-generator sets output voltages, frequency occur identical with phase place; Choose two groups of motor-generator sets when running, maximum duration required when output voltage, frequency occur identical with phase place is as time T1 simultaneously; To choose until and after motor-generator sets power-off, maximum duration required when output voltage, frequency and phase place occur identical is as time T2; If the value of time T1 and T2 is less than maximum duration corresponding in test, then may occurring and namely enter next step before car success, thus impact also car success rate; If the value of time T1 and T2 is greater than maximum duration corresponding in test, then can not occurring and also proceed this step in the successful situation of car, thus meaningless extending and the time of car, increase and cost needed for car.
The device characteristics of the motor-generator sets that the present invention adopts according to reality and debugging test result, thus determine that the span of time T1 and T2 is 0-30s, and best value is 20s.
In sum, advantage of the present invention is: by adding the Engagement in moderating process, greatly improve the success rate of unloaded also car, it is unloaded and the one-time success rate of car can reach more than 98%, avoid frequent rising to cutoff motor-generator sets and contactor and bring larger infringement, guarantee that power-supply system is run reliable and stablely.
Accompanying drawing explanation
Fig. 1 is the line map of reactor control rod driving mechanism power-supply system.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
The power-supply system of reactor control rod driving mechanism involved in the present invention as shown in Figure 1, it is primarily of two motor-generator sets 1MG and 2MG, two contactor 402JA and 602JA, two circuit breaker 401JA and 601JA and corresponding control appliance composition, wherein: contactor 402JA and 602JA is respectively the electric motor power switch of 1MG and 2MG, circuit breaker 401JA and 601JA is respectively the outlet switch of 1MG and 2MG; The motor of two motor-generator sets is respectively by 380V ac power supply, and the output backward control rod drive mechanisms (CRD) in parallel of generator is powered; Because motor is threephase asynchronous, and the characteristic of two motor-generator sets is identical, if adopt traditional also car mode, unloaded also car will be very difficult.
In order to overcome above-mentioned shortcoming, the present invention is in tradition and on the basis of car mode, add the Engagement of two motor-generator sets in moderating process, if namely two motor-generator sets at the appointed time can not be synchronous, then disconnect and treating and the power supply of motor-generator sets, make to form speed discrepancy between two motor-generator sets, thus reach synchronous object, its concrete mistake comprises the following steps:
A () closed contactor 402JA starts motor-generator sets 1MG, as close circuit breaker 401JA after generating set 1MG stable operation;
B () closed contactor 602JA starts motor-generator sets 2MG, in the start-up course of motor-generator sets 2MG, synchronizer puts into operation, and the output voltage of automatic detection 1MG and 2MG, frequency and phase place, meanwhile, synchronous meter starts to rotate;
C () detects that within the stipulated time of 20s the output voltage of two cover motor-generator sets, frequency are identical with phase place when synchronizer, then send and car order, close circuit breaker 601JA, two cover unit synchronous operations, and the backward control rod drive mechanisms (CRD) of car success is powered; When two cover motor-generator sets within the stipulated time of 20s can not be synchronous, then automatically disconnect contactor 602JA, and enter step (d);
In (d) 20s time after motor-generator sets 2MG power-off, if synchronizer detects that the output voltage of two cover motor-generator sets, frequency are identical with phase place, then send and car order, close circuit breaker 601JA, after circuit breaker 601JA is closed, close contactor 602JA again, two motor-generator sets realize and car in running slowly; When two cover motor-generator sets within the 20s time can not be synchronous, after motor-generator sets 2MG dead halt, repeat above-mentioned steps, until two overlap motor-generator sets and car success.
Said method can be used in the power-supply system of the reactor control rod driving mechanism of all employing motor-generator sets, comprising for two generations adds nuclear power station and AP1000 nuclear power station etc., it is by adding the Engagement in moderating process, greatly improve the success rate of unloaded also car, it is unloaded and the one-time success rate of car can reach more than 98%.
As mentioned above, just the present invention can be realized preferably.
Claims (3)
1. the unloaded also car method of the power-supply system of reactor control rod driving mechanism, is characterized in that: comprise the following steps:
A () connects the motor power of No. 1 motor-generator sets, thus start No. 1 motor-generator sets, the outlet switch of closed motor-generator sets after its stable operation, and now No. 1 motor-generator sets is in no-load running;
B () connects the motor power treating No. 2 motor-generator sets also, thus start No. 2 motor-generator sets, in the start-up course of No. 2 motor-generator sets, synchronizer puts into operation, and the output voltage of automatic detection No. 1 and No. 2 motor-generator sets, frequency and phase place, meanwhile, synchronous meter starts to rotate;
C when synchronizer, () detects that in time T1 the output voltage of two cover motor-generator sets, frequency are identical with phase place, then send and car order, and the outlet switch of No. 2 motor-generator sets closes, and two overlap motor-generator sets and car success; When two cover motor-generator sets in time T1 can not be synchronous, then disconnect the motor power of No. 2 motor-generator sets, and enter step (d);
In (d) time T2 after No. 2 motor-generator sets power-off, if synchronizer detects that the output voltage of two cover motor-generator sets, frequency are identical with phase place, then send and car order, the outlet switch of No. 2 motor-generator sets is closed, then connect its motor power, two overlap motor-generator sets and car success; When two cover motor-generator sets in time T2 can not be synchronous, after No. 2 motor-generator sets dead halts, repeat above-mentioned steps, until two overlap motor-generator sets and car success;
Time T1 is two groups of motor-generator sets when simultaneously running, maximum duration required when output voltage, frequency occur identical with phase place;
Time T2 for until and after motor-generator sets power-off, maximum duration required when output voltage, frequency and phase place occur identical.
2. the unloaded also car method of the power-supply system of a kind of reactor control rod driving mechanism according to claim 1, is characterized in that: the value of described T1 and T2 is 0-30s.
3. the unloaded also car method of the power-supply system of a kind of reactor control rod driving mechanism according to claim 2, is characterized in that: the value of described T1 and T2 is 20s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210244844.1A CN102751743B (en) | 2012-07-16 | 2012-07-16 | Power system no-load paralleling method for reactor control rod driving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210244844.1A CN102751743B (en) | 2012-07-16 | 2012-07-16 | Power system no-load paralleling method for reactor control rod driving mechanism |
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| CN102751743A CN102751743A (en) | 2012-10-24 |
| CN102751743B true CN102751743B (en) | 2014-12-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105186577B (en) * | 2015-10-12 | 2018-07-06 | 中国船舶重工集团公司第七一一研究所 | A kind of nuclear power control rod drive mechanism power-supply system and and vehicle method |
| CN108847691A (en) * | 2018-08-31 | 2018-11-20 | 卧龙电气南阳防爆集团股份有限公司 | A kind of emergency service unit combination method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140803A (en) * | 1999-04-13 | 2000-10-31 | Siemens Westinghouse Power Corporation | Apparatus and method for synchronizing a synchronous condenser with a power generation system |
| CN102255339A (en) * | 2011-04-12 | 2011-11-23 | 上海发电设备成套设计研究院 | Quick start method for power-supply system of CRDM (control rod drive mechanism) |
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2012
- 2012-07-16 CN CN201210244844.1A patent/CN102751743B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140803A (en) * | 1999-04-13 | 2000-10-31 | Siemens Westinghouse Power Corporation | Apparatus and method for synchronizing a synchronous condenser with a power generation system |
| CN102255339A (en) * | 2011-04-12 | 2011-11-23 | 上海发电设备成套设计研究院 | Quick start method for power-supply system of CRDM (control rod drive mechanism) |
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| CN102751743A (en) | 2012-10-24 |
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