CN202503361U - On-line verifying apparatus for starting and grid connection of emergency diesel generator in nuclear power plant - Google Patents
On-line verifying apparatus for starting and grid connection of emergency diesel generator in nuclear power plant Download PDFInfo
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- CN202503361U CN202503361U CN201220144298XU CN201220144298U CN202503361U CN 202503361 U CN202503361 U CN 202503361U CN 201220144298X U CN201220144298X U CN 201220144298XU CN 201220144298 U CN201220144298 U CN 201220144298U CN 202503361 U CN202503361 U CN 202503361U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 47
- 230000006837 decompression Effects 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000012795 verification Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Disclosed is an on-line verifying apparatus for the starting and grid connection of an emergency diesel generator in a nuclear power plant, comprising a first monitoring unit, a second monitoring unit, a third monitoring unit, a fourth monitoring unit, and a signal acquisition and processing unit, wherein the first monitoring unit is used for monitoring the decompression signals of an emergency bus; the second monitoring unit is used for monitoring the grid connecting signals of the emergency diesel generating set; the third monitoring unit is used for monitoring the decompression signals of a permanent factory-use bus; the fourth monitoring unit is used for monitoring the starting signals of the emergency diesel generating set; and the signal acquisition and processing unit, connected with the first, second, third, and fourth monitoring units via communication, figures out the grid connecting time of the emergency diesel generating set according to the decompression signals of the emergency bus and the grid connecting signals, and obtains the starting time of the emergency diesel generating set according to the decompression signals of a permanent factory-use bus and the starting signal.
Description
Technical field
The utility model relates to demo plant, more particularly, relate to that a kind of nuclear power plant emergency diesel dynamo starts and the usefulness that is incorporated into the power networks demo plant.
Background technology
In correlation technique, the LHA of the station service electrical system 6.6KV of nuclear power plant, LHB emergency bus adopt emergency diesel dynamo group LHP, LHQ emergency power supply in support.When station-service 6.6KVLGB, LGC auxiliary bus bar lose because of factory's external power grid power supply or LGB, the fault of the permanent auxiliary bus bar of LGC own; When causing power outage; LHP, LHQ emergency diesel dynamo group start; Recover the power supply of LHA, LHB emergency bus, guarantee the reactor safety shutdown, prevent that also visual plant from causing damage because of the dead electricity of station service electrical system.
Because the LHP of nuclear power plant, LHQ emergency diesel dynamo group institute on-load are all the visual plant that influences nuclear safety; According to the nuclear safety requirement; LHP, LHQ emergency diesel dynamo group must through time-delay relay time-delay certain hour (for example lose voltage at 6.6KVLGB, the permanent auxiliary bus bar of LGC; 0.9 second) in start and after startup through in the time-delay relay time-delay certain hour (for example, 7 seconds) with the LHA of 6.6KV, the LHB emergency bus is incorporated into the power networks successfully; Therefore; For the startup that guarantees LHP, LHQ emergency diesel dynamo group and the time of being incorporated into the power networks meet the requirements when emergent, just need regularly verify at ordinary times, to get rid of potential safety hazard to the startup and the time of being incorporated into the power networks of LHP, LHQ emergency diesel dynamo group.
In the correlation technique, the maintenance personal of nuclear power plant passes through the analog logic entry condition during overhaul, with the operate time of recorder record time-delay relay, verify the time that the LHP of nuclear power plant, LHQ emergency diesel dynamo group start and be incorporated into the power networks.Yet when making an experiment with the method, the action wiring that need extract the downstream relay is to avoid malfunction, reconnection again after the test completion.Because when test needs external recorder and plugs wiring, implement cumbersomely, and can bring loose contact, malfunction equivalent risk, influence power plant safety.And this test method can only be verified the operate time of time-delay relay, can't the whole startup of correct verification and time of the passage that is incorporated into the power networks, have a strong impact on the correctness of result of the test.Therefore, current test method can not satisfy the safety requirements of nuclear power plant.
The utility model content
The technical problem that the utility model will solve is, to the many defectives in the correlation technique, and the online verification device that provides a kind of improved nuclear power station emergency diesel dynamo group to use.
The utility model solves the technical scheme that its technical problem adopted: the online verification device of the emergency diesel dynamo startup of a kind of nuclear power plant and the usefulness that is incorporated into the power networks is provided, and this online verification device comprises first monitoring means, second monitoring means, the 3rd monitoring means, the 4th monitoring means and signals collecting and processing unit; Said first monitoring means is used to monitor the decompression signal of emergency bus, and said second monitoring means is used to monitor the signal that is incorporated into the power networks of said emergency diesel dynamo group; Said the 3rd monitoring means is used to monitor the decompression signal of permanent auxiliary bus bar, and said the 4th monitoring means is used to detect the enabling signal of said emergency diesel dynamo group; Said signals collecting and processing unit link to each other with said first to fourth monitoring means communicatedly; Decompression signal and the said signal that is incorporated into the power networks according to said emergency bus draw being incorporated into the power networks the time of said emergency diesel dynamo group, and the start-up time that draws said emergency diesel dynamo group according to the decompression signal and the said enabling signal of said permanent auxiliary bus bar.
Preferably, the time point that said signals collecting and processing unit produce according to the decompression signal and the said signal that is incorporated into the power networks of the said emergency bus that collects, and two time points are subtracted each other draw said being incorporated into the power networks the time.
Preferably, said signals collecting and processing unit be according to the decompression signal of the said permanent auxiliary bus bar that collects and the time point of said enabling signal, and two time points are subtracted each other draw said start-up time.
Preferably, this online verification device also comprises display unit, is used to show said being incorporated into the power networks time and start-up time.
The beneficial effect of the utility model is: compare with correlation technique;, the time that this online verification device checking obtains has comprised the time of the whole startup and the passage that is incorporated into the power networks, data are more accurate; And need not to dismantle the downstream relay and detect, eliminated the risk that the relay plug brings.In addition, form that also can be through short circuit is in the startup of the online detection emergency diesel dynamo of nuclear power plant's run duration group and be incorporated into the power networks the time, can increase the checking frequency, has reduced system risk.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is supply line of the nuclear power plant sketch map among some embodiment of the utility model;
Fig. 2 shows the startup of emergency diesel dynamo group shown in Figure 1 and the procedure chart that is incorporated into the power networks;
The another kind that Fig. 3 shows emergency diesel dynamo group shown in Figure 1 starts and the procedure chart that is incorporated into the power networks;
Fig. 4 is the schematic diagram of online verification device shown in Figure 3.
Embodiment
Below in conjunction with specific embodiment and Figure of description the utility model is explained further details.
Fig. 1 shows supply line of the nuclear power plant sketch map among some embodiment of the utility model; This supply line is according to the requirement of amount of redundancy principle; Comprise that A, B two are listed as independently supply line; Because A, B two row supply line structures are basic identical, will be that example describes with A row supply line 100 mainly as follows.As shown in Figure 1; In the A row supply line 100, station transformer 101 will be depressurized to the middle pressure of 6.6KV from the power supply of 500KV master's electrical network or main generator after, be delivered to the impermanent auxiliary bus bar 103 of LGA via LGA01JA circuit breaker 102; The equipment of impermanent auxiliary bus bar 103 power supplies of LGA is the auxiliary serial equipment power supply of nuclear power plant's impermanency; Even the normal operation of unit and when unit outage the also equipment of corresponding stoppage in transit, for example, water supply pump (electronic), circulate to pump and main reactor pump etc.
The impermanent auxiliary bus bar 103 of LGA also is delivered to the permanent auxiliary bus bar 105 of LGB with power supply via LGB01JA circuit breaker 104; The equipment of permanent auxiliary bus bar 105 power supplies of LGB is the permanent auxiliary serial equipment of nuclear power plant; Promptly when a compressor emergency shutdown; Unit and supplemental equipment requirement continue the equipment of power supply, for example, and SRI pump and jiggering motor etc.The permanent auxiliary bus bar 105 of LGB also is connected with auxiliary transformer 107 through LGB02JA circuit breaker 106; Auxiliary transformer 107 links to each other with the auxiliary electrical network of 220KV outside the venue; So that when 500KV master's electrical network or main generator are all unavailable, use the auxiliary mains supply of 220KV outside the venue.
The permanent auxiliary bus bar 105 of LGB is also given LHA emergency bus 109 through LHA01JA circuit breaker 108 with power delivery; LHA emergency bus 109 is used for the emergent auxiliary device power supply to nuclear power plant; Promptly give and nuclear safety and protection facility or the needed auxiliary device power supply of nuclear power plant's capital equipment, for example derive power devices such as pump to safety injection pump and waste heat.LHA emergency bus 109 also is connected with emergency diesel dynamo group 111 through LHA02JA circuit breaker 110; So that when the auxiliary electrical network of 500KV master's electrical network, main generator and 220KV is all unavailable, be 109 power supplies of LHA emergency bus by emergency diesel dynamo group 111.LHA emergency bus 109 is also through pressing transfer box 112 to link to each other, so that the emergency diesel dynamo in A row and the B row supply line can replace use each other among LHA03JA circuit breaker and the 9LHT003AR.
Fig. 2 shows the startup of emergency diesel dynamo group 111 shown in Figure 1 in the correlation technique and the procedure chart that is incorporated into the power networks, and this startup and grid-connected system comprise actuating section that is positioned at the dotted line left side and the combined floodgate part that is positioned at the dotted line right side substantially.In actuating section, have four kinds of situations to produce emergency diesel dynamo group starting command, these four kinds of situations are respectively: the permanent auxiliary bus bar 105 of (1) LGB lose voltage (≤0.7UN), and after time-delay relay 201 time-delays a period of time (for example 0.9 second); (2) extra high voltage circuit breaker 202 breaks off, and no-voltage; (3) LHA emergency bus 109 lose voltage (≤0.8UN), and after time-delay relay 201 time-delay a period of time (for example 0.9 second); (4) coming from the LHA02JA circuit breaker 110 of the part of closing a floodgate or the combined floodgate of LHA03JA circuit breaker 112 remembers.In the combined floodgate part; Also exist four kinds of situations to produce switching signal; Be respectively: (1) LHA emergency bus 109 lose voltage (≤0.8UN), and after time-delay relay 201 time-delay a period of time (for example 0.9 second), again through after time-delay relay 204 time-delays a period of time (for example 7 seconds); (2) 001TL from master-control room 205 selects; (3) 101TL that comes from master-control room 206 selects; (4) combined floodgate that comes from other system 207 is ordered.
In above-mentioned four, produce in the situation and four kinds of four kinds of situations that produce the order of closing a floodgate of emergency diesel dynamo group starting command; The harmfulness that permanent auxiliary bus bar 105 of LGB and LHA emergency bus 109 lose voltage is bigger; And stipulated delay requirement, therefore, in order to guarantee that the emergency diesel dynamo group starts and the delay requirement up to specification that closes a floodgate when emergent; Just need be regularly emergent diesel generating set startup and closing time being verified at ordinary times, to get rid of potential safety hazard.
In the correlation technique, the maintenance personal of nuclear power plant is through the analog logic entry condition, with the operate time of recorder record time-delay relay 201, to draw the start-up time of emergency diesel dynamo group roughly during overhaul.Correspondingly, obtaining the time of being incorporated into the power networks then is to draw operate time with recorder record time-delay relay 204.The defective that the checking emergency diesel dynamo group startup in the correlation technique and the method for closing time exist has had detailed statement in background technology, just repeat no more at this.
Fig. 3 shows the startup and the grid-connected system 200 of the emergency diesel dynamo group 111 among some embodiment of the utility model; It is on the basis of startup shown in Figure 2 and grid-connected system, to have increased an online verification device 300, be used for on-line monitoring emergency diesel dynamo group 111 startup and be incorporated into the power networks the time.
As shown in Figure 4, signals collecting and processing unit 305 and power subsystem 307 that this online verification device 307 comprises first monitoring means 301, second monitoring means 302, the 3rd monitoring means 303, the 4th monitoring means 304, links to each other communicatedly with monitoring means 301 ~ 304.Wherein, first monitoring means 301 is used to monitor the decompression signal of LHA emergency bus 109, and second monitoring means 302 is used to monitor the signal that is incorporated into the power networks of emergency diesel dynamo group; The 3rd monitoring means 303 is used to monitor the decompression signal of the permanent auxiliary bus bar 105 of LGB, and the 4th monitoring means 304 is used to monitor the enabling signal of emergency diesel dynamo group 111.Signals collecting and processing unit 305 are used for monitoring means 301 ~ 304 detected signals are handled, and draw the startup of emergency diesel dynamo group 111 and are incorporated into the power networks the time.In certain embodiments, online verification device 307 also can comprise and signals collecting and processing unit 305 and data display unit 306, be used to show the startup of emergency diesel dynamo group 111 and be incorporated into the power networks the time.Monitoring means 301 ~ 304 can be relay in certain embodiments.
Be incorporated into the power networks time verifying test of diesel generating set: the maintenance personal of nuclear power plant is through the analog logic entry condition during overhaul; Obtain the decompression signal of LHA emergency bus 109 and the signal that is incorporated into the power networks of emergency diesel dynamo group 111 through first monitoring means 301 and second monitoring means 302 respectively; And send signals collecting and processing unit 305 to; According to producing the time point of decompression signal with the signal that is incorporated into the power networks, both subtract each other the time of being incorporated into the power networks that calculates automatically by signals collecting and processing unit 305.
Diesel generating set demonstration test start-up time: the maintenance personal of nuclear power plant is through the analog logic entry condition during overhaul; Pass through the 3rd monitoring means 303 and the 4th monitoring means 304 respectively with the decompression signal of the permanent auxiliary bus bar 105 of LGB and the enabling signal of emergency diesel dynamo group 111; And send signals collecting and processing unit 305 to; According to the time point that produces decompression signal and enabling signal, both subtract each other and calculate start-up time automatically by signals collecting and processing unit 305.
Because the above-mentioned online verification device 307 of employing is verified the startup of emergency diesel dynamo groups 111 and is incorporated into the power networks the time; The time that checking obtains has comprised the time of the whole startup and the passage that is incorporated into the power networks; Data are more accurate; And need not to dismantle the downstream relay and detect, eliminated the risk that the relay plug brings.In addition, form that also can be through short circuit is in the startup of the online detection emergency diesel dynamo of nuclear power plant's run duration group 111 and be incorporated into the power networks the time, can increase the checking frequency, has reduced system risk.
The above only is the preferred implementation of the utility model, and the protection range of the utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to the protection range of the utility model.Should be pointed out that for those skilled in the art in the some improvement and the retouching that do not break away under the utility model principle prerequisite, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (4)
1. a nuclear power plant emergency diesel dynamo starts and the online verification device of the usefulness that is incorporated into the power networks; It is characterized in that this online verification device comprises first monitoring means, second monitoring means, the 3rd monitoring means, the 4th monitoring means and signals collecting and processing unit; Said first monitoring means is used to monitor the decompression signal of emergency bus, and said second monitoring means is used to monitor the signal that is incorporated into the power networks of said emergency diesel dynamo group; Said the 3rd monitoring means is used to monitor the decompression signal of permanent auxiliary bus bar, and said the 4th monitoring means is used to detect the enabling signal of said emergency diesel dynamo group; Said signals collecting and processing unit link to each other with said first to fourth monitoring means communicatedly; Decompression signal and the said signal that is incorporated into the power networks according to said emergency bus draw being incorporated into the power networks the time of said emergency diesel dynamo group, and the start-up time that draws said emergency diesel dynamo group according to the decompression signal and the said enabling signal of said permanent auxiliary bus bar.
2. online verification device according to claim 1; It is characterized in that; The time point that said signals collecting and processing unit produce according to the decompression signal and the said signal that is incorporated into the power networks of the said emergency bus that collects, and two time points are subtracted each other draw said being incorporated into the power networks the time.
3. online verification device according to claim 1 and 2; It is characterized in that; Said signals collecting and processing unit be according to the decompression signal of the said permanent auxiliary bus bar that collects and the time point of said enabling signal, and two time points are subtracted each other draw said start-up time.
4. online verification device according to claim 1 is characterized in that, this online verification device also comprises display unit, is used to show said being incorporated into the power networks time and start-up time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220144298XU CN202503361U (en) | 2012-04-09 | 2012-04-09 | On-line verifying apparatus for starting and grid connection of emergency diesel generator in nuclear power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220144298XU CN202503361U (en) | 2012-04-09 | 2012-04-09 | On-line verifying apparatus for starting and grid connection of emergency diesel generator in nuclear power plant |
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| CN202503361U true CN202503361U (en) | 2012-10-24 |
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| CN201220144298XU Expired - Lifetime CN202503361U (en) | 2012-04-09 | 2012-04-09 | On-line verifying apparatus for starting and grid connection of emergency diesel generator in nuclear power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159472A (en) * | 2019-05-09 | 2019-08-23 | 中广核研究院有限公司 | A kind of method and its system of nuclear power plant's starting Emergency diesel |
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2012
- 2012-04-09 CN CN201220144298XU patent/CN202503361U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159472A (en) * | 2019-05-09 | 2019-08-23 | 中广核研究院有限公司 | A kind of method and its system of nuclear power plant's starting Emergency diesel |
| CN110159472B (en) * | 2019-05-09 | 2022-04-19 | 中广核研究院有限公司 | Method and system for starting emergency diesel engine in nuclear power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |