CN202512907U - Overhaul interface of DCS (data communication system) of nuclear power station - Google Patents
Overhaul interface of DCS (data communication system) of nuclear power station Download PDFInfo
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- CN202512907U CN202512907U CN2011205230815U CN201120523081U CN202512907U CN 202512907 U CN202512907 U CN 202512907U CN 2011205230815 U CN2011205230815 U CN 2011205230815U CN 201120523081 U CN201120523081 U CN 201120523081U CN 202512907 U CN202512907 U CN 202512907U
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- 238000012423 maintenance Methods 0.000 claims description 66
- 230000005540 biological transmission Effects 0.000 claims description 24
- 239000013307 optical fiber Substances 0.000 claims description 16
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Abstract
The utility model relates to a fault detection technology and discloses an overhaul interface of a DCS (data communication system) of a nuclear power station. The overhaul interface comprises a power plant bus interface, an electric isolation unit, a data processing unit, and a PCI (programmable communication interface) bus interface, wherein an input end of the power plant bus interface is connected with a power plant bus of the DCS, and an output end of the power plant bus interface is connected with an electric isolation unit; an input end of the electric isolation unit is connected with the power plant bus interface, and the output end of the electric isolation unit is connected with the data processing unit; and an input end of the data processing unit is connected with the electric isolation unit, an output end of the data processing unit is connected with the PCI bus interface; an input end of the PCI bus interface is connected with the data processing unit, and output end of the PCI bus interface is connected with a diagnosis interface of an overhaul expert platform of the DCS. According to the overhaul interface disclosed by the utility model, the electric isolation unit can carry out electric isolation on the DCS and the overhaul interface, and prevents an external signal from causing interference with the power plant bus of the DCS; and the data processing unit can sieve and analyze the data, is beneficial to carrying out effective overhaul on the DCS. The overhaul interface disclosed by the utility model has the advantages of simple structure, and stable performance without influencing the operation of the DCS.
Description
Technical field
The utility model relates to fault detection technique, more specifically, relates to the maintenance interface of a kind of nuclear power station DCS system.
Background technology
Continuous accumulation along with the construction of nuclear power station and operating experience; Adopting totally digitilized DCS (Distributed Control System) system to replace the conventional analogue technology has been the inexorable trend of nuclear power appearance control system development, also becomes the research object of a lot of power stations maintenance for the maintenance and the maintenance of the DCS system of nuclear power station.Because the DCS system of nuclear power station is different from the DCS system of conventional power plant; The maintainer is deficient to the understanding of the information such as malfunction and failure pattern, malfunction and failure presentation, malfunction and failure consequence and fault reveal codes of DCS system, therefore will realize the in-service monitoring of nuclear power station DCS system itself very harsh.Then high requirement is proposed for the security of system when adopting maintenance expert's platform (MES) maintenance DCS system.The guarantee of this security can be achieved through the maintenance interface of optimizing the DCS system.But the supplier of the DCS system of nuclear power station does not provide the maintenance of satisfying above-mentioned requirements interface at present, and adopt conventional maintenance interface then to have following shortcoming: (1) possibly influence the safe operation of power plant's bus of DCS system; (2) influence the operating rate and the traffic rate of power plant's bus; (3) excessively increased the load of power plant's bus; (4) reliability is not high, often occurs communication deadlock phenomenon in the operational process.Above-mentioned shortcoming all causes conventional maintenance interface can not adapt to the maintenance needs of DCS system effectively, and then influences the validity and the promptness of maintenance process.
The utility model content
The technical matters that the utility model will solve is; Can not adapt to maintenance needs of DCS system effectively and influence the validity of maintenance process and the shortcoming of promptness to conventional maintenance interface of the prior art, a kind of speed height, stable performance are provided, load is low and the maintenance interface of the nuclear power station DCS system that the safe operation of power plant's bus do not had influence.
The utility model solves its technical matters and is achieved through following technical scheme: the maintenance interface of a kind of nuclear power station DCS system is provided, wherein, comprises:
Power plant's EBI, its input end are connected in power plant's bus of DCS system, and output terminal is connected to the electrical isolation unit;
Electrical isolation unit, its input end are connected in said power plant EBI, and output terminal is connected in data processing unit;
Data processing unit, its input end are connected in said electrical isolation unit, and output terminal is connected to pci bus interface;
Pci bus interface, its input end is connected in said data processing unit, and output terminal is connected to the maintenance expert platform diagnose interface of DCS system.
In the maintenance interface of above-mentioned nuclear power station DCS system; Said electrical isolation unit comprises photoelectric switching circuit, and said photoelectric switching circuit comprises first diode, second diode, first receiver, second receiver, two fine fiber optical transceiver and first metadata cache;
First diode that is used for unidirectional conducting data is connected the input end that said power plant EBI, the other end connect first receiver and second receiver respectively with second diode, one end; The output terminal of first receiver and second receiver is connected in the input end of the two fine fiber optical transceivers that are used to realize the photosignal conversion, and the output terminal of two fine fiber optical transceivers is connected to the input end of first metadata cache; The output terminal of first metadata cache is connected to said data processing unit.
In the maintenance interface of above-mentioned nuclear power station DCS system; Said two fine fiber optical transceiver changes optical fiber for the RJ-45 that connects through two optical fiber and optical fiber changes RJ-45; It is upper end network and the power supply that connects the DCS system that said RJ-45 changes optical fiber, and said optical fiber changes RJ-45 and is the lower end network and connects external power source.
In the maintenance interface of above-mentioned nuclear power station DCS system, said data processing unit comprises second metadata cache, pci controller, to second metadata cache with pci controller sends the Data Transmission Control Unit of first control signal and data-switching control sub unit from second control signal to pci controller that transmit;
The input end of said second metadata cache is connected in that said electrical isolation unit, control end are connected in said Data Transmission Control Unit, output terminal is connected to said pci controller; The input/output terminal of said Data Transmission Control Unit connects said pci controller, output terminal connects said second metadata cache; Said data-switching control sub unit connects said pci controller; First control end of said pci controller connects said Data Transmission Control Unit, second control end and connects that said data-switching control sub unit, input end connect said second metadata cache, output terminal is connected to said pci bus interface.
In the maintenance interface of above-mentioned nuclear power station DCS system, said data-switching control sub unit comprises the CF card and the EEPROM of electrical connection; Wherein, said EEPROM is connected to second control end of said pci controller.
In the maintenance interface of above-mentioned nuclear power station DCS system, said Data Transmission Control Unit is that model is the CPLD of ATF1504AS.
In the maintenance interface of above-mentioned nuclear power station DCS system, said pci controller is that model is the chip of PCI9054.
In the maintenance interface of above-mentioned nuclear power station DCS system, said power plant EBI is connected through optical fiber with power plant's bus of DCS system or twisted-pair feeder connects.
In the maintenance interface of above-mentioned nuclear power station DCS system, said pci bus interface and power plant's EBI are RJ-45 interface, bnc interface, Combo interface or TP interface.
Implement the maintenance interface of the nuclear power station DCS system of the utility model; Can obtain following technique effect: the electrical isolation unit of maintenance interface has the one-way data conduction; Can carry out electrical isolation with the maintenance interface to the DCS system, thereby prevent that external signal from causing interference, avoiding the safe operation of power plant's bus is impacted power plant's bus of DCS system; Data processing unit can screen and resolve data, thereby obtains DCS system overhaul active data, helps follow-up maintenance expert platform the DCS system is carried out quick efficient diagnosis.The utility model is simple in structure, stable performance and can not influence the operation of DCS system.
Description of drawings
Below will combine accompanying drawing and specific embodiment that the utility model is done further explain.In the accompanying drawing:
Fig. 1 is the structural representation of maintenance Application of Interface when the DCS system overhaul of the nuclear power station DCS system of the utility model;
Fig. 2 is the structured flowchart of maintenance interface of the nuclear power station DCS system of the utility model;
Fig. 3 is the structural representation of electrical isolation unit of maintenance interface of the nuclear power station DCS system of the utility model;
Fig. 4 is the structural representation of two fine fiber optical transceivers of the utility model;
Fig. 5 is the structured flowchart of data processing unit of maintenance interface of the nuclear power station DCS system of the utility model;
Fig. 6 is the circuit theory diagrams of data processing unit of maintenance interface of the nuclear power station DCS system of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The maintenance interface of the nuclear power station DCS system of the utility model (hereinafter to be referred as the maintenance interface) is used for when the DCS system of nuclear power station is overhauled, connecting DCS system and maintenance expert's platform (MES).In the concrete implementation procedure, the maintenance interface is arranged on OSM (fiber-optic switching module) panel of power plant's bus with other hardware interfaces.As shown in Figure 1, OSM includes but not limited to illustrated maintenance interface, power interface, network interface and data transmission interface.Wherein, the maintenance interface connects power plant's bus and is connected power plant's bus with maintenance expert platform, power interface and is connected and data transmission interface connection data collector and power plant's bus with the nuclear power station internal network with power supply, network interface realization power plant bus.The maintenance interface of the utility model (is a LEVEL1 power plant bus through key-course power plant bus on the spot; Hereinafter to be referred as power plant's bus) the DB9 joint is connected with power plant's bus of nuclear power station DCS system, be connected with MES through the MES diagnose interface, thus being connected and communicating by letter between realization power plant bus and the MES.
As shown in Figure 2, the maintenance interface 10 of the utility model comprises power plant's EBI 11, electrical isolation unit 12, data processing unit 13 and pci bus interface 14.Power plant's bus (particularly, being connected in the DB9 joint), output terminal that power plant's EBI 11 input ends are connected in the DCS system are connected to electrical isolation unit 12; The input end of electrical isolation unit 12 is connected in power plant's EBI 11, output terminal is connected to data processing unit 13; The input end of data processing unit 13 is connected in electrical isolation unit 12, output terminal is connected to pci bus interface 14; The input end of pci bus interface 14 is connected in the MES diagnose interface that data processing unit 13, output terminal are connected to the DCS system.Wherein, electrical isolation unit 12, data processing unit 13 and pci bus interface 14 external power supply work.
After the data of power plant's bus get into electrical isolation unit 12 through power plant's EBI 11; Data transfer to the data processing unit 13 in downstream through opto-electronic conversion, after 13 pairs of data through opto-electronic conversion of data processing unit are screened and resolved it are transferred to the MES diagnose interface through pci bus interface 14.
Power plant's bus that power plant's EBI 11 connects the DCS systems to be realizing the data communication of maintenance interface and power plant's bus, and it can or pass through twisted-pair feeder through optical fiber and be connected with the power plant bus.Pci bus interface 14 connects the MES diagnose interface to realize the data communication of maintenance interface and MES.The utility model can adopt power plant EBI consistent with the general network interface structure 11 and pci bus interface 14 to realize above-mentioned data communication, and power plant's EBI 11 that is adopted and pci bus interface 14 are such as but not limited to RJ-45 interface, bnc interface, Combo interface and/or TP interface.
The input end of electrical isolation unit 12 is connected with power plant EBI 11, is used between power plant's bus of DCS system and maintenance interface, carrying out electrical isolation.With reference to figure 3; The electrical isolation unit 12 of the utility model comprises photoelectric switching circuit, and this photoelectric switching circuit comprises the first diode D1, the second diode D2, first receiver 121, second receiver 122, two fine fiber optical transceiver 123 and first metadata cache 124.
The first diode D1 and the second diode D2 have the function of unidirectional conducting data; In the utility model it is arranged between power plant's EBI 11 and first receiver 121 and second receiver 122, thereby can guarantees that signal only transmits to the first follow-up receiver 121 and second receiver 122 from power plant's EBI 11.First receiver 121 and second receiver 122 can receive the data from power plant's EBI 11; Its output terminal is connected with the input end of the two fine fiber optical transceiver 123 that is used to realize that photosignal is changed, and the output terminal of two fine fiber optical transceivers 123 connects first metadata cache 124; The output terminal of first metadata cache 124 is connected to data processing unit 13.
As shown in Figure 4, the two fine light transceiver 123 of the utility model is that the RJ45 that uses in pairs changes optical fiber (RJ45-OPTI) and optical fiber commentaries on classics RJ45 (OPTI-RJ45).What those skilled in the art were familiar with is that RJ45-OPTI and OPTI-RJ45 are the Ethernet photoelectric commutator, can realize the conversion of the electricity-light-electricity of signal when it uses in pairs.Use two optical fiber to be connected between RJ45-OPTI and the OPTI-RJ45 and replace electrical connection, thereby played the effect of electrical isolation.The more important thing is; The power supply that equipment in the upper end network that is connected with RJ45-OPTI uses is the power supply of nuclear power station DCS system; Equipment in the lower end network that is connected with OPTI-RJ45 then uses other external power supplys (as shown in Figure 2), has realized electrical isolation between the equipment (especially MES diagnose interface) of the equipment (especially DCS system) of network and lower end network on this moment.The signal of lower end network also is that external signal can not act on power plant's bus or it is caused interference, thereby has guaranteed the safe operation of power plant's bus of DCS system at maintenance process like this.
Referring to Fig. 5 and 6, the data processing unit 13 of the utility model specifically comprises second metadata cache 131, pci controller 132, to second metadata cache 131 with pci controller 132 sends the Data Transmission Control Unit 133 of first control signal and data-switching control sub unit 134 from second control signal to pci controller 132 that transmit.
The input end of second metadata cache 131 is connected in that electrical isolation unit 12, control end are connected in Data Transmission Control Unit 133, output terminal is connected to pci controller 132; The input/output terminal of Data Transmission Control Unit 133 connects pci controller 132, output terminal connects second metadata cache 131; Data-switching control sub unit 134 connects pci controller 132; First control end of pci controller 132 connects Data Transmission Control Unit 133, second control end and connects that data conversion and control subelement 134, input end connect second metadata cache 131, output terminal is connected to pci bus interface 134.
Second metadata cache of the utility model is that model is that the fifo chip, pci controller 132 of IDT72V3680 is that chip and the Data Transmission Control Unit 133 of PCI9054 is the CPLD of ATF1504AS for model for model; CF card and the EEPROM of data-switching control sub unit 134 for being electrically connected.
The IDT72V3680 fifo chip receives the data of electrical isolation unit 12 transmissions and data is kept in wherein; Thereby model is the CPLD of ATF1504AS sends data in first control signal control IDT72V3680FIFO chip to the transmission of PCI9054 chip through first control end to the control end of IDT72V3680FIFO chip and PCI9054 chip; The CF card is connected with EEPROM and can transmits second control signal to EEPROM; Second control signal of EEPROM reception before the second control end transmission of PCI9054 chip subsequently; The PCI9054 chip receives second control signal and the IDT72V3680 fifo chip that receives is handled to the data of its transmission, then the data of finishing dealing with is sent to pci bus interface 14.Here saidly data are screened and resolved the clock sync signal that refers to get rid of in the data etc., and keep the effective signal of the maintenance of DCS system.
CPLD is an IC-components well-known to those skilled in the art, main sequential and the logic control (first control signal) that realizes data transmission between PCI9054 chip and the IDT72V3680 fifo chip in the utility model.CPLD of the present invention comprises that request receiving circuit, request allow circuit, clock signal generating circuit and clock signal output circuit.After the data transfer request that reception PCI9054 chip sends; Request allows circuit judges whether to allow this data transfer request; If allow then to produce corresponding clock signal, and this clock signal (first control signal) is sent to PCI9054 chip and IDT72V3680 fifo chip through clock signal generating circuit.Also be that CPLD passes through the PCI9054 request, allows request and gated clock signal etc. to realize the transmission of data from the IDT72V3680 fifo chip to the PCI9053 chip.
In sum, its power plant's bus is communicated by letter with the valid data of MES in the time of can realizing the DCS system overhaul through the maintenance interface of the utility model.The electrical isolation unit of the maintenance interface of the utility model can carry out electrical isolation with the maintenance interface to the DCS system, thereby prevents that external signal from causing interference, avoiding the safe operation of power plant's bus is impacted power plant's bus of DCS system; Data processing unit can be controlled and data are screened and resolved the transmission of data, thereby obtains DCS system overhaul active data, helps follow-up maintenance expert platform the DCS system is carried out quick efficient diagnosis; Power plant's EBI and pci bus interface are this area network interface commonly used, have simplified the structural design of the maintenance interface of the utility model.The maintenance interface structure of the utility model is simple and realization is convenient.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. the maintenance interface of a nuclear power station DCS system is characterized in that, comprising:
Power plant's EBI, its input end are connected in power plant's bus of DCS system, and output terminal is connected to the electrical isolation unit;
Electrical isolation unit, its input end are connected in said power plant EBI, and output terminal is connected in data processing unit;
Data processing unit, its input end are connected in said electrical isolation unit, and output terminal is connected to pci bus interface;
Pci bus interface, its input end is connected in said data processing unit, and output terminal is connected to the maintenance expert platform diagnose interface of DCS system.
2. the maintenance interface of nuclear power station DCS according to claim 1 system; It is characterized in that; Said electrical isolation unit comprises photoelectric switching circuit, and said photoelectric switching circuit comprises first diode, second diode, first receiver, second receiver, two fine fiber optical transceiver and first metadata cache;
First diode that is used for unidirectional conducting data is connected the input end that said power plant EBI, the other end connect first receiver and second receiver respectively with second diode, one end; The output terminal of first receiver and second receiver is connected in the input end of the two fine fiber optical transceivers that are used to realize the photosignal conversion, and the output terminal of two fine fiber optical transceivers is connected to the input end of first metadata cache; The output terminal of first metadata cache is connected to said data processing unit.
3. the maintenance interface of nuclear power station DCS according to claim 2 system; It is characterized in that; Said two fine fiber optical transceiver changes optical fiber for the RJ-45 that connects through two optical fiber and optical fiber changes RJ-45; It is upper end network and the power supply that connects the DCS system that said RJ-45 changes optical fiber, and said optical fiber changes RJ-45 and is the lower end network and connects external power source.
4. the maintenance interface of nuclear power station DCS according to claim 1 system; It is characterized in that said data processing unit comprises second metadata cache, pci controller, to second metadata cache with pci controller sends the Data Transmission Control Unit of first control signal and data-switching control sub unit from second control signal to pci controller that transmit;
The input end of said second metadata cache is connected in that said electrical isolation unit, control end are connected in said Data Transmission Control Unit, output terminal is connected to said pci controller; The input/output terminal of said Data Transmission Control Unit connects said pci controller, output terminal connects said second metadata cache; Said data-switching control sub unit connects said pci controller; First control end of said pci controller connects said Data Transmission Control Unit, second control end and connects that said data-switching control sub unit, input end connect said second metadata cache, output terminal is connected to said pci bus interface.
5. the maintenance interface of nuclear power station DCS according to claim 4 system is characterized in that said data-switching control sub unit comprises the CF card and the EEPROM of electrical connection; Wherein, said EEPROM is connected to second control end of said pci controller.
6. the maintenance interface of nuclear power station DCS according to claim 4 system is characterized in that said Data Transmission Control Unit is that model is the CPLD of ATF1504AS.
7. the maintenance interface of nuclear power station DCS according to claim 4 system is characterized in that said pci controller is that model is the chip of PCI9054.
8. the maintenance interface of nuclear power station DCS according to claim 1 system is characterized in that, said power plant EBI is connected through optical fiber with power plant's bus of DCS system or twisted-pair feeder connects.
9. the maintenance interface of nuclear power station DCS according to claim 1 system is characterized in that said pci bus interface and power plant's EBI are RJ-45 interface, bnc interface, Combo interface or TP interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205230815U CN202512907U (en) | 2011-12-14 | 2011-12-14 | Overhaul interface of DCS (data communication system) of nuclear power station |
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| CN2011205230815U CN202512907U (en) | 2011-12-14 | 2011-12-14 | Overhaul interface of DCS (data communication system) of nuclear power station |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345950A (en) * | 2013-07-12 | 2013-10-09 | 中科华核电技术研究院有限公司 | Ex-core nuclear detection system and method for pressurized water reactor |
| CN107634972A (en) * | 2017-10-31 | 2018-01-26 | 北京广利核系统工程有限公司 | The one-way communication system and board of nuclear power station security level system and non-security level system |
| CN108155933A (en) * | 2017-11-24 | 2018-06-12 | 中核控制系统工程有限公司 | A kind of method for realizing safety level DCS communication isolatings |
| CN111290443A (en) * | 2020-04-02 | 2020-06-16 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
-
2011
- 2011-12-14 CN CN2011205230815U patent/CN202512907U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345950A (en) * | 2013-07-12 | 2013-10-09 | 中科华核电技术研究院有限公司 | Ex-core nuclear detection system and method for pressurized water reactor |
| CN103345950B (en) * | 2013-07-12 | 2017-02-08 | 中广核研究院有限公司 | Ex-core nuclear detection system and method for pressurized water reactor |
| CN107634972A (en) * | 2017-10-31 | 2018-01-26 | 北京广利核系统工程有限公司 | The one-way communication system and board of nuclear power station security level system and non-security level system |
| CN107634972B (en) * | 2017-10-31 | 2023-08-29 | 北京广利核系统工程有限公司 | Unidirectional communication system and board card of nuclear power station safety level system and non-safety level system |
| CN108155933A (en) * | 2017-11-24 | 2018-06-12 | 中核控制系统工程有限公司 | A kind of method for realizing safety level DCS communication isolatings |
| CN111290443A (en) * | 2020-04-02 | 2020-06-16 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
| CN111290443B (en) * | 2020-04-02 | 2023-04-07 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
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Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER NAME: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: China General Nuclear Power Corporation Patentee after: Dayawan Nuclear Power Running Management Co., Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: China Guangdong Nuclear Power Group Co., Ltd. Patentee before: Dayawan Nuclear Power Running Management Co., Ltd. |
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Effective date of registration: 20161019 Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: China General Nuclear Power Corporation Patentee after: Lingdong Nuclear Power Co., Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: China General Nuclear Power Corporation Patentee before: Dayawan Nuclear Power Running Management Co., Ltd. |
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Granted publication date: 20121031 |
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