CN112152094A - Cross power supply structure of man-machine interface equipment of nuclear power station control room - Google Patents
Cross power supply structure of man-machine interface equipment of nuclear power station control room Download PDFInfo
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- CN112152094A CN112152094A CN202011005512.9A CN202011005512A CN112152094A CN 112152094 A CN112152094 A CN 112152094A CN 202011005512 A CN202011005512 A CN 202011005512A CN 112152094 A CN112152094 A CN 112152094A
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention discloses a cross power supply structure of man-machine interface equipment in a nuclear power station control room, which comprises: a first column power supply structure, a second column power supply structure and a third column power supply structure; each row of power supply structures comprises a first power supply and a second power supply; the first power supply and the second power supply are connected to a bus of a power supply cabinet corresponding to the row through a switch circuit, and the output end of the power supply cabinet is connected to a human-computer interface device corresponding to the row; and at least one power supply of each row of power supply structures is also connected to the buses of the power supply cabinets of other rows so as to realize cross power supply among different rows of power supply structures. Compared with the prior art, the invention can effectively solve the power supply problem of multi-column equipment, improves the reliability and safety of the man-machine interface equipment in the control room, reduces the human failure probability of control room operators and improves the safety of the nuclear power station operation.
Description
Technical Field
The invention relates to the field of power supply of nuclear power stations, in particular to a cross power supply structure of man-machine interface equipment in a control room of a nuclear power station.
Background
In consideration of the operational concerns of nuclear power plants with respect to nuclear accident safety, public environment management, and technical complexity of the nuclear power plant system itself, the power plant functions and operational tasks are often strictly analyzed during the design process. The nuclear power station control room is a monitoring center of the nuclear power station, and man-machine interface equipment in the nuclear power station control room is a centralized place for information and control of the whole nuclear power station, and plays a significant role in the aspect of safe operation of the nuclear power station. No matter under normal working conditions or abnormal working conditions, an operator monitors and controls the nuclear power station through human-computer interface equipment of a nuclear power station control room, and effective and safe operation of the nuclear power station is guaranteed.
As the control room human-computer interface equipment plays an important role in the operation of the nuclear power station, the power supply to the control room human-computer interface equipment also meets the requirements of safety and reliability. In the existing nuclear power plant, a double-row power supply (as shown in fig. 1) is provided, and a power supply scheme adopting the double-row power supply is also adopted for man-machine interface equipment of a control room. The double-row power supply supplies power independently, and after double rows lose power, an emergency power supply with limited capacity is adopted to supply power for a small amount of control room man-machine interface equipment. Under normal conditions, the redundant A-column power buses supply power to A-column man-machine interface equipment in a control room through A-column power supply cabinets; and the redundant B-column power buses supply power to the B-column man-machine interface equipment in the control room through the B-column power supply cabinet. When A, B power supplies lose power, an emergency power supply with limited capacity is adopted to supply power for a small amount of human-computer interface equipment in a control room, and the power supply time is limited. When one power supply loses power, the man-machine interface equipment of the power supply control room loses power, only the other man-machine interface equipment can be used, the means for monitoring and controlling the power station is limited, and the safety operation of the power station is not facilitated. And according to the probability analysis of the nuclear power station, the possibility of power loss of the double-row power supply exists, important equipment of the power station and human-computer interface equipment with limited control rooms are powered by emergency equipment for ensuring the safety of the power station, and only a safety bottom line can be ensured for monitoring and controlling the power station. And the capacity of the emergency power supply is limited, and if the power supply can not be recovered within the specified time, the shutdown of the power station can be carried out only by using limited human-computer interface equipment, so that the shutdown rate of the power station is increased, and the running economy of the power station is reduced.
Disclosure of Invention
The invention aims to: aiming at the problems and the defects, the cross power supply structure of the man-machine interface equipment in the control room of the nuclear power station is provided, so that the power supply safety of the man-machine interface equipment in the control room of the nuclear power station is ensured, and the operation safety of the nuclear power station is ensured.
The embodiment of the invention provides a cross power supply structure of man-machine interface equipment in a nuclear power station control room, which comprises the following components: a first column power supply structure, a second column power supply structure and a third column power supply structure; each row of power supply structures comprises a first power supply and a second power supply; the first power supply and the second power supply are connected to a bus of a power supply cabinet corresponding to the row through a switch circuit, and the output end of the power supply cabinet is connected to a human-computer interface device corresponding to the row; and at least one power supply of each row of power supply structures is also connected to the buses of the power supply cabinets of other rows so as to realize cross power supply among different rows of power supply structures.
Preferably, the power supply of each row of power supply structure further comprises at least one of an emergency diesel engine, a standby diesel engine and an uninterruptible power supply UPS in addition to the normal power supply.
Preferably, the first power supply of the first column power supply structure and the first power supply of the third column power supply structure are connected to the first bus bar of the first column power supply cabinet through a switch circuit.
Preferably, the second power supply of the first column power supply structure and the second power supply of the third column power supply structure are connected to the second bus bar of the first column power supply cabinet through a switch circuit.
Preferably, the first power supply of the second column power supply structure and the first power supply of the third column power supply structure are connected to the first bus bar of the second column power supply cabinet through a switch circuit.
Preferably, the second power supply of the second column power supply structure and the second power supply of the third column power supply structure are connected to the second bus bar of the second column power supply cabinet through a switch circuit.
Preferably, the second power supply of the first column power supply structure, the first power supply of the second column power supply structure and the first power supply of the third column power supply structure are connected to the first and second buses of the third column power supply cabinet through a switch circuit.
Preferably, the bus of the third row of power supply cabinets is connected to the power supply processing module, and the output end of the power supply processing module is connected to the first bus and the second bus of the fourth row of power supply cabinets through two power supply lines; and the output end of the fourth column of power supply cabinet is connected to the human-computer interface equipment of the fourth column.
Preferably, the human interface device of the fourth column is a SCID device of the control room.
Preferably, the buses of each row of power supply cabinets adopt a redundant bus configuration, and the power supply cabinets adopt anti-seismic power supply cabinets.
The cross power supply structure of the man-machine interface equipment in the control room of the nuclear power station can effectively solve the power supply problem of multi-column equipment, improves the reliability and safety of the man-machine interface equipment in the control room, reduces the human factor failure probability of control room operators, and improves the safety of the operation of the nuclear power station. The main technical effects are four:
1. by adopting various power supply measures, the reliability of a power supply of the bus is improved, the single-row power failure probability of the human-computer interface equipment in the control room is reduced, and the problem that part of the human-computer interface equipment is unavailable due to single-row power failure is solved.
2. And a high-reliability three-row power supply is adopted, so that the problem that the use of the human-computer interface equipment is influenced due to the fact that all power buses of the human-computer interface equipment in the control room are powered off is solved.
3. By adopting the cross power supply scheme, the problem of power supply sources of multi-row equipment is solved, and the probability of single-row or multi-row power loss of the human-computer interface equipment in the control room is reduced.
4. And the earthquake-resistant power supply cabinet is adopted, so that the power loss probability of the man-machine interface equipment in the control room in the earthquake process is reduced.
Drawings
FIG. 1 is a diagram of a prior art power plant control room human interface device power supply scheme.
Fig. 2 is a schematic diagram of a cross power supply structure of a man-machine interface device in a control room of a nuclear power plant according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, an embodiment of the present invention provides a cross power supply structure for man-machine interface devices in a control room of a nuclear power plant, including: a first column power supply structure 10, a second column power supply structure 20, and a third column power supply structure 30; each row of power supply structures comprises a first power supply and a second power supply; the first electric power supply and the second power supply are connected to a bus of a power supply cabinet corresponding to the row through a switch circuit, and the output end of the power supply cabinet is connected to the human-computer interface equipment corresponding to the row; and at least one power supply of each row of power supply structures is also connected to the buses of the power supply cabinets of other rows so as to realize cross power supply among different rows of power supply structures.
In the embodiment, multiple power supply guarantee measures such as an emergency diesel engine, a standby diesel engine and an Uninterruptible Power Supply (UPS) are also configured for each row of power supply besides a normal power supply, so that the reliability of the power supply is ensured, the power loss probability of human-computer interface equipment in a control room is reduced, and the availability and the reliability are improved.
In this embodiment, each row of power supply cabinets adopts a redundant bus configuration (for example, as shown in fig. 2, the bus of each row of power supply cabinets includes a first bus and a second bus), so that the power loss probability of the single row of control room equipment is reduced, and each row of human-machine interface equipment provides more comprehensive monitoring and control information.
In the present embodiment, the bus bar of the third column of power supply cabinet 31 is connected to the power processing module 40, and the output end of the power processing module 40 is connected to the bus bar of the fourth column of power supply cabinet 41 through two power supply lines; the output of the fourth column of power supply cabinets 41 is connected to a fourth column of human machine interface devices 42.
Aiming at the characteristic that four rows of control room SCID equipment are arranged corresponding to four channels of the nuclear power plant protection system, a fourth row of power supply is output from a bus of a third row at the upstream through the power supply processing module 40, and the problem of power supply of a fourth row of human-computer interface equipment 42(SCID equipment) is solved.
In the embodiment, considering that the probability of the simultaneous failure of the power supplies in the same column is higher, the embodiment adopts a design scheme of cross power supply of the power supplies in different columns, so that the reliability of power supply is improved.
In one implementation:
the first power supply of the first column power supply structure 10 and the first power supply of the third column power supply structure 30 are connected to the first bus bar of the first column power supply cabinet 11 through a switch circuit.
The second power supply of the first column power supply structure 10 and the second power supply of the third column power supply structure 30 are connected to the second bus bar of the first column power supply cabinet 11 through a switch circuit.
The first power supply of the second column power supply structure 20 and the first power supply of the third column power supply structure 30 are connected to the first bus bar of the second column power supply cabinet 21 through a switch circuit.
The second power supply of the second column power supply structure 20 and the second power supply of the third column power supply structure 30 are connected to the second bus bar of the second column power supply cabinet 21 through a switch circuit.
The second power supply of the first column power supply structure 10, the first power supply of the second column power supply structure 20 and the first power supply of the third column power supply structure 30 are connected to the first and second buses of the third column power supply cabinet 31 through a switch circuit.
Thus, the safety and reliability of power supply are improved by the cross power supply mode. The specific reliability analysis is shown in table 1:
table 1 bus crossing control room equipment power supply scheme and effect analysis
As can be seen from table 1, when a problem occurs in any one row of power supplies, the power supplies in other rows can supply power to the power supplies; even if the first and third two rows of power supply equipment are lost, the power supply equipment can still normally operate, so that the operation safety of the whole nuclear power station control room is greatly improved.
It should be noted that, in other embodiments of the present invention, the cross power supply scheme of each column power supply structure may be adjusted according to actual needs, for example, the first power supply of the third column power supply structure 30 may cross the second power supply of the first column power supply structure 10, and the corresponding second power supply of the third column power supply structure 30 may cross the first power supply of the first column power supply structure 10, and these modifications are within the protection scope of the present invention.
It should be noted that in other embodiments of the present invention, more rows (e.g., five rows, six rows, etc.) of power supply structures may be included, but the cross power supply manner therebetween is also within the scope of the present invention.
In summary, the cross power supply structure of the nuclear power station control room human-computer interface device provided by this embodiment can effectively solve the power supply problem of multiple rows of devices, improves the reliability and safety of the control room human-computer interface device, reduces the human factor failure probability of control room operators, and improves the safety of the nuclear power station operation. The main technical effects are four:
1. by adopting various power supply measures, the reliability of a power supply of the bus is improved, the single-row power failure probability of the human-computer interface equipment in the control room is reduced, and the problem that part of the human-computer interface equipment is unavailable due to single-row power failure is solved.
2. And a high-reliability three-row power supply is adopted, so that the problem that the use of the human-computer interface equipment is influenced due to the fact that all power buses of the human-computer interface equipment in the control room are powered off is solved.
3. By adopting the cross power supply scheme, the problem of power supply sources of multi-row equipment is solved, and the probability of single-row or multi-row power loss of the human-computer interface equipment in the control room is reduced.
4. And the earthquake-resistant power supply cabinet is adopted, so that the power loss probability of the man-machine interface equipment in the control room in the earthquake process is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A cross power supply structure of man-machine interface equipment in a nuclear power station control room is characterized by comprising: a first column power supply structure, a second column power supply structure and a third column power supply structure; each row of power supply structures comprises a first power supply and a second power supply; the first power supply and the second power supply are connected to a bus of a power supply cabinet corresponding to the row through a switch circuit, and the output end of the power supply cabinet is connected to a human-computer interface device corresponding to the row; and at least one power supply of each row of power supply structures is also connected to the buses of the power supply cabinets of other rows so as to realize cross power supply among different rows of power supply structures.
2. The cross-power structure of human-machine interface equipment in the nuclear power plant control room as claimed in claim 1, wherein the power supply of each row of power supply structure further comprises at least one of an emergency diesel engine, a standby diesel engine and an Uninterruptible Power Supply (UPS) in addition to a normal power supply.
3. The cross-power structure of human-machine interface equipment of nuclear power plant control room of claim 1, characterized in that the first power supply of the first column of power supply structures and the first power supply of the third column of power supply structures are connected to the first bus bar of the first column of power supply cabinets through a switch circuit.
4. The cross-power structure of human-machine interface equipment of nuclear power plant control room of claim 1, characterized in that the second power supply of the first column of power supply structure and the second power supply of the third column of power supply structure are connected to the second bus bar of the first column of power supply cabinet through a switch circuit.
5. The cross-power structure of human-machine interface equipment of nuclear power plant control room of claim 1, characterized in that the first power supply of the second column power supply structure and the first power supply of the third column power supply structure are connected to the first bus bar of the second column power supply cabinet through a switch circuit.
6. The cross-power structure of human-machine interface equipment of nuclear power plant control room of claim 1, characterized in that the second power supply of the second column power supply structure and the second power supply of the third column power supply structure are connected to the second bus bar of the second column power supply cabinet through a switch circuit.
7. The cross-power structure of human-machine interface equipment of nuclear power plant control room of claim 1, characterized in that the second power supply source of the first row of power supply structure, the first power supply source of the second row of power supply structure and the first power supply source of the third row of power supply structure are connected to the first and second bus bars of the third row of power supply cabinet through a switch circuit.
8. The cross power supply structure of human-machine interface equipment in the control room of the nuclear power plant as claimed in claim 7, wherein the bus bar of the third row of power supply cabinets is connected to a power supply processing module, and the output end of the power supply processing module is connected to the first bus bar and the second bus bar of the fourth row of power supply cabinets through two power supply lines; and the output end of the fourth column of power supply cabinet is connected to the human-computer interface equipment of the fourth column.
9. The cross-powering arrangement for human interface devices in nuclear power plant control rooms as claimed in claim 8, characterized in that the human interface devices in the fourth column are SCID devices of the control room.
10. The cross power supply structure of man-machine interface equipment in the control room of the nuclear power plant as claimed in any one of claims 1 to 9, wherein the buses of each row of power supply cabinets adopt a redundant bus configuration, and the power supply cabinets adopt anti-seismic power supply cabinets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011005512.9A CN112152094B (en) | 2020-09-23 | 2020-09-23 | Cross power supply structure of man-machine interface equipment of control room of nuclear power station |
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| CN202011005512.9A CN112152094B (en) | 2020-09-23 | 2020-09-23 | Cross power supply structure of man-machine interface equipment of control room of nuclear power station |
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| CN112152094B CN112152094B (en) | 2023-09-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659942A (en) * | 1985-06-03 | 1987-04-21 | The Charles Stark Draper Laboratory, Inc. | Fault-tolerant power distribution system |
| CN102195334A (en) * | 2011-05-20 | 2011-09-21 | 中国广东核电集团有限公司 | Method and system for improving reliability of emergency power supplies of nuclear power plant |
| CN102255377A (en) * | 2011-05-20 | 2011-11-23 | 中国广东核电集团有限公司 | Method and system for supplying emergency power supply to nuclear power station |
| CN103427478A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Power source cross power supply system |
| CN106508085B (en) * | 2011-12-27 | 2014-11-05 | 中核兰州铀浓缩有限公司 | A kind of Separation of uranium isotopes field centrifuge Intermediate frequency power supply system cell arrangement |
| CN107947333A (en) * | 2017-11-02 | 2018-04-20 | 广东核电合营有限公司 | Realize security method menu, system and the control device of biserial power supply crossfeed |
-
2020
- 2020-09-23 CN CN202011005512.9A patent/CN112152094B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659942A (en) * | 1985-06-03 | 1987-04-21 | The Charles Stark Draper Laboratory, Inc. | Fault-tolerant power distribution system |
| CN102195334A (en) * | 2011-05-20 | 2011-09-21 | 中国广东核电集团有限公司 | Method and system for improving reliability of emergency power supplies of nuclear power plant |
| CN102255377A (en) * | 2011-05-20 | 2011-11-23 | 中国广东核电集团有限公司 | Method and system for supplying emergency power supply to nuclear power station |
| CN106508085B (en) * | 2011-12-27 | 2014-11-05 | 中核兰州铀浓缩有限公司 | A kind of Separation of uranium isotopes field centrifuge Intermediate frequency power supply system cell arrangement |
| CN103427478A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Power source cross power supply system |
| CN107947333A (en) * | 2017-11-02 | 2018-04-20 | 广东核电合营有限公司 | Realize security method menu, system and the control device of biserial power supply crossfeed |
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