CN106506080A - A kind of field bus system and method based on nuclear power station water supply system - Google Patents

A kind of field bus system and method based on nuclear power station water supply system Download PDF

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Publication number
CN106506080A
CN106506080A CN201610886197.2A CN201610886197A CN106506080A CN 106506080 A CN106506080 A CN 106506080A CN 201610886197 A CN201610886197 A CN 201610886197A CN 106506080 A CN106506080 A CN 106506080A
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signal
optical
detection signal
control
control signal
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CN201610886197.2A
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CN106506080B (en
Inventor
苏宇
张超
贾宝峰
黄勇成
张小晶
张旺盛
江辉
史觊
刘东波
孟光
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China General Nuclear Power Corp
China Nuclear Power Engineering Co Ltd
Shenzhen China Guangdong Nuclear Engineering Design Co Ltd
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China General Nuclear Power Corp
China Nuclear Power Engineering Co Ltd
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Priority to CN201610886197.2A priority Critical patent/CN106506080B/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40006Architecture of a communication node
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25Arrangements specific to fibre transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40169Flexible bus arrangements
    • H04L12/40176Flexible bus arrangements involving redundancy
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/40208Bus networks characterized by the use of a particular bus standard
    • H04L2012/40221Profibus
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/4026Bus for use in automation systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computing Systems (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

The invention provides a kind of field bus system and method based on nuclear power station water supply system, the system is included for gathering the feedwater parameter of the water supply system, and supplies water to steam generator secondary side, maintains the field apparatus of the water level of steam generator secondary side;For transmitting control signal and receiving the fieldbus networks of detection signal;For carrying out the opto-electronic conversion device assembly of the two times transfer of photosignal to control signal or detection signal;For processing detection signal, and send the control system of control signal, the present invention is by the scene equipment level in water supply system comprehensively using field bus technique, the field apparatus of water supply system is replaced with smart machine, achieve the control to water supply system, optimize cost, make final-period management convenient with maintenance.

Description

A kind of field bus system and method based on nuclear power station water supply system
Technical field
The present invention relates to nuclear power station technical field, more particularly to a kind of field bus system based on nuclear power station water supply system And method.
Background technology
Fieldbus is referred between the automaton indoor installed in the field device and control of manufacture or process area Digital, serial and the data/address bus of multi-point.In the world in existing 40 multiple fieldbus type, still there is no one kind Fieldbus can cover all of application layer, and every kind of fieldbus has respective technical characterstic and use range.
At present, fieldbus is widely used in the fields such as oil, electric power and chemical industry, but does not also have in commercial nuclear power station One system is controlled to field apparatus level using fieldbus.Water supply system in the nuclear power station of existing operation is substantially The control to field apparatus is realized by hard wired mode, as water supply system equipment is relatively decentralized, water supply system is result in Cable, crane span structure and cable tube are excessive;Simultaneously as the field apparatus of water supply system is not smart machine, later maintenance band is given Carry out many troubles.
Content of the invention
The present invention is complicated for the control system wiring of nuclear power station water supply system, high cost, conventional field devices precision is low, A kind of difficult problem of later maintenance, there is provided field bus system and method based on nuclear power station water supply system.
The technical scheme that the present invention is proposed with regard to above-mentioned technical problem is as follows:
The invention provides a kind of field bus system based on nuclear power station water supply system, the system includes:
Fieldbus networks, field equipment connecting, for coming from control system to institute by different transmission path transmission State the control signal of field apparatus and receive the detection signal for coming from field apparatus;
Opto-electronic conversion device assembly, connects the fieldbus networks and control system respectively, for according to different transmission roads Control signal or detection signal that footpath is obtained, the two times transfer for carrying out photosignal to control signal or detection signal will Control signal after conversion is sent to the fieldbus networks, or by conversion after detection signal send to described control system System.
According to said system, the fieldbus networks be Profibus bus network, the Profibus bus network Including DP bus network and PA bus network, the DP bus network and PA bus network form the different transmission roads Footpath;
The opto-electronic conversion device assembly include being connected in different transmission path for transmitting the detection signal With the first opto-electronic conversion device assembly of control signal and for when controller over loading or failure in control system, transmission The detection signal and the second opto-electronic conversion device assembly of control signal;
The field apparatus be used for unit starting, stand-by heat and shut down operating mode under gather the water supply system to Water parameter, and supply water to steam generator secondary side, maintain the water level of steam generator secondary side.
According to said system, the first opto-electronic conversion device assembly includes:
First optical-electrical converter, connects the control system, is converted to for first signal of telecommunication by the control signal First optical signal transmission of control signal is additionally operable to for the first optical signal of detection signal to be converted to inspection to the second optical-electrical converter The second electric signal transmission of signal is surveyed to the control system;
Second optical-electrical converter, one end connect the DP bus network and PA bus network respectively, and the other end passes through first Optical fiber connects first optical-electrical converter, is converted to the second of control signal for the first optical signal by the control signal Electric signal transmission is additionally operable to the detection signal for receiving the PA bus network, and the detection is believed to the DP bus network Number first signal of telecommunication be converted to the first optical signal transmission of detection signal to first optical-electrical converter;
The second opto-electronic conversion device assembly includes:
3rd optical-electrical converter, connects the DP bus network and PA bus network respectively, for receiving the PA buses 3rd signal of telecommunication of the detection signal is converted to the second optical signal transmission of detection signal to the 4th by the detection signal of network Optical-electrical converter, is additionally operable to for the second optical signal of the control signal to be converted into the 4th electric signal transmission of control signal to DP Bus network;
4th optical-electrical converter, connects the control system, and connects the 3rd optical-electrical converter by the second optical fiber, The 4th electric signal transmission is converted to the control system for the second optical signal by the detection signal, being additionally operable to will be described 3rd signal of telecommunication of control signal is converted to the second optical signal transmission of control signal to the 3rd optical-electrical converter.
According to said system, the control system includes:
Controller, connects first optical-electrical converter, for receiving and processing the detection signal, is additionally operable to according to control System instruction generates the control signal;
Redundant manipulator, connects the 4th optical-electrical converter, for when the controller over loading or failure, connecing The detection signal is received and process, and is additionally operable to the control signal be generated according to control instruction;
Terminal module, connects the controller and redundant manipulator by Ethernet, for according to the detection signal Result generates control instruction;
The controller is additionally operable to, when itself over loading or failure, start redundant manipulator.
According to said system, the field apparatus includes primary scene equipment and secondary scene equipment, the primary scene Equipment includes that, for connecting at least one isolating valve and at least one feed pump of the DP bus network respectively, described second is existing Field device includes at least one manometer and at least one flow instrument for connection PA bus network respectively, wherein,
Control signal after the DP bus network is used for conversion is sent to the corresponding separate pump or feed pump is held Row difference action, supplies water to steam generator secondary side;
The PA bus network is used for detection signal by the first opto-electronic conversion device assembly or the second opto-electronic conversion Device assembly transfers to the control system after carrying out secondary opto-electronic conversion.
According to said system, the DP bus network includes two tunnel transmission ends:Main transmission ends and redundant transmission end, wherein every The end of transmission ends is correspondingly arranged on terminal resistance all the way, and each terminal resistance is used for reducing signaling reflex.
According to said system, PA junction boxs, the PA between the PA bus network and secondary scene equipment, is additionally provided with Junction box is used for for PA signals being split as multiple PA signals, and there is short-circuit protection and overload protection.
According to said system, each isolating valve and feed pump all contain two-way receiving terminal, connect the main biography respectively Defeated end and redundant transmission end, for when the main transmission ends are normally run, receiving and executing the institute of the main transmission ends transmission State the control signal after conversion;In the main transmission ends operation troubles, the institute of the redundant transmission end transmission is received and is executed State the control signal after conversion;Each manometer and flow instrument are connected to single after splitting through the PA junction boxs Individual PA signals, for gathering the feedwater parameter of the water supply system, generate detection signal.
According to said system, the field bus system is divided into the first level, the second level and third layer level three-decker, Wherein,
First level is field control level, including the primary scene equipment and secondary scene equipment, for the detection The collection and the execution of the control signal of signal;
Second level is process control level, including the controller and redundant manipulator, to detection signal Reason;
Third layer level is operational control level, including the terminal module and the data handling equipment of correlation, for according to inspection The result for surveying signal generates control signal.
Present invention also offers a kind of method of the fieldbus based on nuclear power station water supply system, comprises the following steps:
S1, unit starting, stand-by heat and shut down operating mode under, by field apparatus gather the water supply system to Water parameter, generates detection signal, is transferred to fieldbus networks;
S2, the reception detection signal, after opto-electronic conversion device assembly carries out the two times transfer of photosignal, will conversion Detection signal afterwards is sent to control system;
S3, receive and process the detection signal, control signal is sent according to result;
S4, the reception control signal, the two times transfer for carrying out photosignal by the opto-electronic conversion device assembly will turn Control signal after changing is sent to the fieldbus networks;
S5, receive and the control signal is sent to the field apparatus, control the field apparatus to steam generator Secondary side supplies water, and maintains the water level of steam generator secondary side.
According to said method, step S2 includes:
S21, the detection signal is received by the PA bus network;
S22, judge controller operation whether normal;
S23, when the controller normally runs, the detection signal is received by the second optical-electrical converter, and by institute First signal of telecommunication for stating detection signal is converted to the first optical signal of detection signal;
S24, by the first optical signal of the detection signal by the first fiber-optic transfer give first optical-electrical converter, and Second signal of telecommunication that first optical signal of the detection signal is converted to detection signal by first optical-electrical converter, sends out Deliver to the controller.
According to said method, step S3 includes:
S31, second signal of telecommunication for receiving and processing the detection signal;
S32, the second point signal transmission of the detection signal after Ethernet is by process are to terminal module;
S33, second signal of telecommunication of the detection signal after the terminal module reception processing, and generate control and refer to Order;
S34, the control instruction is transmitted to the controller by Ethernet.
According to said method, step S4 includes:
S41, the control instruction is received by the controller and generates control signal;
S42, first signal of telecommunication of the control signal is converted to the first of control signal by the first optical-electrical converter Optical signal;
S43, by the first optical signal of the control signal by the first fiber-optic transfer give second optical-electrical converter, and Second signal of telecommunication that first optical signal of the control signal is converted to control signal by second optical-electrical converter, sends out Deliver to the DP bus network.
According to said method, step S5 includes:
Control signal after S51, the reception conversion;
S52, judge whether the operation of main transmission ends is normal;
If the main transmission ends of S53 are normally run, by conversion after the control signal transmitted to first existing by main transmission ends Field device;
If the main transmission ends operation troubles of S54, by conversion after the control signal transmitted to first by redundant transmission end Field apparatus;
Isolating valve or feed pump in S55, primary scene equipment is opened when receiving the control signal, each by control Being turned on and off for individual isolating valve or feed pump, completes the water supply to steam generator secondary side.
According to said method, step S2 also includes:
S25, when the controller runs over loading or during failure, start redundant manipulator, by the 3rd optical-electrical converter The detection signal is received, and the 3rd signal of telecommunication of the detection signal is converted to the second optical signal of detection signal;
S26, by the second optical signal of the detection signal by the second fiber-optic transfer give the 4th optical-electrical converter, and The 4th signal of telecommunication that second optical signal of the detection signal is converted to detection signal by the 4th optical-electrical converter, sends out Deliver to the redundant manipulator.
According to said method, step S3 also includes:
S35, the 4th signal of telecommunication for receiving and processing the detection signal;
S36, the 4th electric signal transmission of the detection signal after Ethernet is by process are to terminal module;
S37, the 4th signal of telecommunication of the detection signal after the terminal module reception processing, and generate control and refer to Order;
S38, the control instruction is transmitted to the redundant manipulator by Ethernet.
According to said method, step S4 also includes:
S44, the 4th signal of telecommunication for receiving and processing the detection signal by the redundant manipulator;
S45, the 3rd signal of telecommunication of the control signal is converted to the second of control signal by the 4th optical-electrical converter Optical signal;
S46, by the second optical signal of the control signal by the second fiber-optic transfer give the 3rd optical-electrical converter, and The 4th signal of telecommunication that second optical signal of the control signal is converted to control signal by the 3rd optical-electrical converter, sends out Deliver to the DP bus network.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is:
By the scene equipment level in water supply system comprehensively using field bus technique, mount on a network segment multiple Field instrument and field apparatus, reduce the usage amount of the cable and crane span structure of connection, reduce the workload that installs and design;With When using redundancy field bus device, it is ensured that the safety of redundancy, and optimize the network segment division;Set by using smart fields Standby, precision, the capacity of resisting disturbance of detection signal is improve, is conducive to accuracy and the reliability of system, and is carried for later maintenance For facility.
Description of the drawings
Fig. 1 is that a kind of structure of field bus system based on nuclear power station water supply system that the embodiment of the present invention one is provided is shown It is intended to.
Fig. 2 is that a kind of structure of field bus system based on nuclear power station water supply system that the embodiment of the present invention one is provided is shown It is intended to.
Fig. 3 is that a kind of field bus system based on nuclear power station water supply system that the embodiment of the present invention one is provided preferably is implemented The structural representation of example.
Fig. 4 is a kind of field bus system flow chart based on nuclear power station water supply system that the embodiment of the present invention two is provided.
Fig. 5 is a kind of field bus system flow chart based on nuclear power station water supply system that the embodiment of the present invention two is provided.
Specific embodiment
Control system wiring in order to solve nuclear power station water supply system is complicated, high cost, conventional field devices precision is low, after Phase problem difficult in maintenance, the present invention is intended to provide a kind of method of the fieldbus based on nuclear power station water supply system, its core Thought is:A kind of field bus system based on nuclear power station water supply system is proposed, by the scene equipment level in water supply system Use field bus technique comprehensively, reduce the cost of line;By using smart devices, the essence of detection signal is improve Degree, capacity of resisting disturbance, provide facility for later maintenance.
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to present invention enforcement Mode is described in further detail.
Embodiment one
Embodiments provide a kind of field bus system based on nuclear power station water supply system, referring to Fig. 1, the system Including:
Fieldbus networks 20, field equipment connecting 10, for coming from control system by different transmission path transmission The control signal of 40 to field apparatus 10 and reception come from the detection signal of field apparatus 10;
Opto-electronic conversion device assembly 30, connects fieldbus networks 20 and control system 40 respectively, for according to different transmission Control signal or detection signal that path is obtained, the two times transfer that photosignal is carried out to control signal or detection signal, Control signal after by conversion is sent to fieldbus networks 20, or by conversion after detection signal send to control system 40.
Specifically, referring to Fig. 2, fieldbus networks 20 are Profibus bus network, and Profibus bus network includes DP bus network 201 and PA bus network 202, DP bus network 201 and PA bus network 202 form different transmission roads Footpath;
Opto-electronic conversion device assembly 30 include being connected in different transmission path for transmitting detection signal and control First opto-electronic conversion device assembly of signal and for when 401 over loading of controller or failure in control system, transmission inspection Survey the second opto-electronic conversion device assembly of signal and control signal;
Field apparatus 10 is used in unit starting, stand-by heat and shuts down the feedwater for gathering the water supply system under operating mode Parameter, and supply water to steam generator secondary side, maintain the water level of steam generator secondary side.
Specifically, referring to Fig. 3, the first opto-electronic conversion device assembly 301 includes:
First optical-electrical converter 3011, connection control system 40, for being converted to control letter by the signal of telecommunication of control signal Number the first optical signal transmission to the second optical-electrical converter 3012, be additionally operable to for the first optical signal of detection signal to be converted to detection Second electric signal transmission of signal is to control system 40;
Second optical-electrical converter 3012, one end connect DP bus network 201 and PA bus network 202 respectively, and the other end leads to Cross the first optical fiber 3013 and connect the first optical-electrical converter 3011, control signal is converted to for the first optical signal by control signal The second electric signal transmission to DP bus network 201, be additionally operable to the detection signal for receiving PA bus network 202, and will detection letter Number first signal of telecommunication be converted to the first optical signal transmission of detection signal to the first optical-electrical converter 3011;
Second opto-electronic conversion device assembly 302 includes:
3rd optical-electrical converter 3021, connection DP bus network 201 and PA bus network 202, total for receiving PA respectively 3rd signal of telecommunication of detection signal is converted to the second optical signal transmission of detection signal to by the detection signal of gauze network 202 Four optical-electrical converters 3022, are additionally operable to the 4th electric signal transmission that the second optical signal of control signal is converted into control signal extremely DP bus network 201;
4th optical-electrical converter 3022, connection control system 40, and the 3rd opto-electronic conversion is connected by the second optical fiber 3023 Device 3021, is converted to the 4th electric signal transmission to control system 40 for the second optical signal by detection signal, is additionally operable to control 3rd signal of telecommunication of signal processed is converted to the second optical signal transmission of control signal to the 3rd optical-electrical converter 3021.
In the present embodiment, have the communication main station of Profibus under control system 40, due under main website can carry much from Station equipment (i.e. primary scene equipment 101 and secondary scene equipment 102), and main website is distant far from slave station, is to ensure signal Real-time and accuracy, therefore the control signal that main website is sent converts the electrical signal to light letter by opto-electronic conversion device assembly 30 Number, after optical fiber carries out long-distance transmissions, reconvert is into the signal of telecommunication;Or the detection signal for sending slave station passes through opto-electronic conversion Device assembly 30 converts the electrical signal to optical signal, and after optical fiber carries out long-distance transmissions, reconvert is into the signal of telecommunication.
Specifically, referring to Fig. 2, control system 40 includes:
Controller 401, connects the first optical-electrical converter 3011, for receiving simultaneously processing detection signal, is additionally operable to according to control System instruction generates control signal;
Redundant manipulator 402, connects the 4th optical-electrical converter 3022, for when 401 over loading of controller or failure, Receive and processing detection signal, be additionally operable to control signal be generated according to control instruction;
In the present embodiment, the communication main station of 40 times Profibus of control system is redundancy, and the main website of redundancy is while work Make, alternative space is can achieve between main website, and its fastener is also redundancy, realizes the control to slave station equipment and pipe with this The function of reason.
Terminal module 403, connects controller 401 and redundant manipulator 402 by Ethernet, for according to detection signal Result generates control instruction;
Controller 401 is additionally operable to, when itself over loading or failure, start redundant manipulator 402.
Specifically, referring to Fig. 2 and Fig. 3, field apparatus 10 includes primary scene equipment 101 and secondary scene equipment 103, the One field apparatus 101 is included at least one isolating valve 1013 of connection DP bus network 201 and at least one feedwater respectively Pump 1014, secondary scene equipment 102 are included at least one manometer 1021 of connection PA bus network 202 respectively and extremely A few flow instrument 1022, wherein,
DP bus network 201 is used for for control signal after conversion being sent to corresponding isolating valve 1013 or feed pump 1014 is held Row difference action, supplies water to steam generator secondary side;
In the present embodiment, DP bus network 201 can mainly connect the intelligence such as the actuator of extension intelligence, motor and set Standby, which part smart machine also supports the DP bus network of redundancy, can improve the reliability and peace of network to a great extent Quan Xing;For ensureing real-time and the accuracy of communication, the primary scene equipment mounted on each network segment in DP bus network 201 101 quantity are no more than 16.
PA bus network 202 is used for detection signal by the first opto-electronic conversion device assembly 301 or the second optical-electrical converter Component 302 transfers to control system 40 after carrying out secondary opto-electronic conversion;
In the present embodiment, Profibus-DP networks are changed by DP/PA protocol conversions inside PA bus network 202 It is Profibus-PA networks so as to carrying out the connection of Profibus-PA equipment.
Specifically, referring to Fig. 3, DP bus network 201 includes two tunnel transmission ends:Main transmission ends 1011 and redundant transmission end 1012, the end of each of which road transmission ends is correspondingly arranged on terminal resistance, and each terminal resistance is anti-for reducing signal Penetrate;
In the present embodiment, signal circuit has about 220 Ω of its characteristic impedance due to various transmission lines, when signal exists When transmitting in transmission line to terminal, if its terminal impedance is different with characteristic impedance, can cause to reflect, so that signal waveform Distortion;The phenomenon of the distortion in transmission line in short-term not substantially, but can be more serious with the lengthening of transmission line, cause signal without Method is correctly transmitted, it is therefore necessary to is installed terminal resistance additional to reduce signaling reflex, is ensured communication quality;Meanwhile, terminal resistance may be used also To guarantee when without data transfer, the voltage in bus is the zero-signal voltage of transceiver accreditation.
Specifically, referring to Fig. 3, PA junction boxs 203 are additionally provided between PA bus network 202 and secondary scene equipment 102, PA junction boxs 203 are used for for PA signals being split as multiple PA signals, and there is short-circuit protection and overload protection.
In the present embodiment, the equipment for hanging intelligence instrument class is mainly connect in PA bus network 202, by PA junction boxs 203 Single PA signals are split as many PA signals, its short-circuit protection for carrying and overload protection, make system safe and reliable in guarantee On the premise of reduce cable cost to greatest extent;For ensure communication real-time and accuracy, in PA bus network 202 each On the network segment mount 102 quantity of secondary scene equipment no more than on 6, and the same network segment mount valve quantity no more than 2;
The total quantity mounted in DP bus network 201 and PA bus network 202 is no more than 18.
Specifically, referring to Fig. 3, isolating valve 1013 and feed pump 1014 all contain two-way receiving terminal, connect main transmission respectively End 1011 and redundant transmission end 1012, in main 1011 normal operation of transmission ends, receiving and executing main transmission ends 1011 and pass Control signal after defeated conversion;In main 1011 operation troubles of transmission ends, the transmission of redundant transmission end 1012 is received and executes Control signal after conversion;
Manometer 1021 and flow instrument 1022 are connected to single PA signals after splitting through PA junction boxs 203, use In the feedwater parameter of collection water supply system, detection signal is generated.In the present embodiment, when being controlled to water supply system, will be The equipment such as feed pump 1014 and valve (1013 and 1015) in system are linked into DP bus network 201, and the intelligence instrument at scene connects Enter to PA bus network 202, the equipment choice such as feed pump 1014 and valve (1013 and 1015) support redundancy Profibus-DP Equipment, slave station of the redundancy Profibus-DP equipment with two Profibus-DP communication interfaces, and have between two interfaces There are special redundant communication paths to realize the two information exchange;During work, one of them as master-salve station communication interface, another As standby slave station communication interface;Redundancy slave station also has two independent Profibus-DP protocol communication stacks, corresponding to two Profibus-DP EBIs.Redundant channel is specifically used to the letter of the configuration between two protocol stacks of redundancy slave station inner exchanging Breath, bus parameter information and input/output procedure data, while complete the switching of the primary, spare communication interface of redundancy slave station;
Redundance unit in system, the such as equipment such as part instrument, main feed pump or startup feed pump are respectively connected to difference The network segment on, prevent the failure of a network segment from influencing whether the function of whole system.
Specifically, referring to Fig. 3, the field bus system is divided into the first level, the second level and third layer level three-layered node Structure, wherein,
First level is field control level, including the primary scene equipment and secondary scene equipment, for the detection The collection and the execution of the control signal of signal;
Second level is process control level, including the controller and redundant manipulator, to detection signal Reason;
Third layer level is operational control level, including the terminal module and the data handling equipment of correlation, for according to inspection The result for surveying signal generates control signal.The present embodiment is by the scene equipment level in water supply system comprehensively using scene Bussing technique, mounts multiple field instruments and field apparatus on a network segment, reduces the use of the cable and crane span structure of connection Amount, reduces the workload that installs and design;Simultaneously using the field bus device of redundancy, it is ensured that the safety of redundancy, and Optimize the network segment to divide;By using smart devices, precision, the capacity of resisting disturbance of detection signal is improve, is conducive to system Accuracy and reliability, and provide facility for later maintenance.
Embodiment two
The embodiment of the present invention additionally provides a kind of method of the fieldbus based on nuclear power station water supply system, it is adaptable to implement The field bus system based on nuclear power station water supply system shown in example one, referring to Fig. 4, the method includes:
S1, unit starting, stand-by heat and shut down operating mode under, the water supply system is gathered by field apparatus 10 Feedwater parameter, generates detection signal, is transferred to fieldbus networks 20;
S2, reception detection signal, after opto-electronic conversion device assembly 30 carries out the two times transfer of photosignal, after changing Detection signal send to control system 40;
S3, reception processing detection signal, send control signal according to result;
S4, receive control signal, the two times transfer that photosignal is carried out by opto-electronic conversion device assembly 30, by conversion after Control signal is sent to fieldbus networks 20;
S5, field apparatus 10 is received and sends a control signal to, control field apparatus 10 is supplied to steam generator secondary side Water, maintains the water level of steam generator secondary side.
In the present embodiment, nuclear power station water supply system is predominantly located in the steam turbine Factory Building of nuclear power plant, is divided into main feedwater system System and startup water supply system;Wherein, it is referred to as starting feedwater by starting the watering path of feed water flow regulating valve;By main feedwater The watering path of flow control valve is referred to as main feedwater.
When power plant normally runs, main feed pump (feed pump 1014) normally runs, by main watering path to steam generation Device supplies water;In running, by instrument measurement masters such as the manometers 1021 and flow instrument 1022 of secondary scene equipment 102 The main feedwater parameters such as feedwater flow, steam generator wide-range/narrow range liquid level, feed temperature, steam flow and steam pressure, Detection signal is converted into, is transmitted to control system 40 by PA bus network 202 and opto-electronic conversion device assembly 30;Then by controlling Control signal is transmitted to the master of primary scene equipment 101 by system 40 by opto-electronic conversion device assembly 30 and DP bus network 201 Feed-regulating valve (isolating valve 1013), controls main feed-regulating valve (isolating valve 1013) and adjusts main feedwater flow, make steam generation Device liquid level is maintained in certain scope.
When flow instrument 1022 detects main feedwater flow less than a preset value, control system 40 sends control signal, Close main feed-regulating valve (isolating valve 1013), open and start feed-regulating valve (isolating valve 1015), from start water supply system to Steam generator supplies water.
Specifically, referring to Fig. 5, step S2 includes:
S21, by PA bus network 202 receive detection signal;
S22, judge whether controller 401 runs normal;
S23, when 401 normal operation of controller, by the second optical-electrical converter 3012 receive detection signal, and will detection First signal of telecommunication of signal is converted to the first optical signal of detection signal;
S24, the first optical signal of detection signal is transferred to the first optical-electrical converter 3011 by the first optical fiber 3013, and Second signal of telecommunication that the first optical signal of detection signal is converted to by the first optical-electrical converter 3011 for detection signal, send to Controller 401;
In the present embodiment, have the communication main station of Profibus under control system 40, due under main website can carry much from Station equipment, and main website is distant far from slave station, is real-time and the accuracy for ensureing signal, therefore the control letter that main website is sent Number optical signal is converted the electrical signal to by opto-electronic conversion device assembly 30, reconvert is into electricity after optical fiber carries out long-distance transmissions Signal.
Specifically, referring to Fig. 5, step S3 includes:
S31, second signal of telecommunication for receiving simultaneously processing detection signal;
S32, the second electric signal transmission of detection signal after Ethernet is by process are to terminal module 403;
In the present embodiment, the communication main station of 401 times Profibus of controller completes the number with slave station in bus network 20 According to exchange, and detection signal is mapped in DCS by controller 41, plays a part of protocol conversion, pass to the detection letter of DCS Number terminal module 403 is uploaded to by Ethernet;
S33, second signal of telecommunication of detection signal after 403 reception processing of terminal module, and generate control instruction;
S34, control instruction is transmitted to controller 401 by Ethernet.
Specifically, referring to Fig. 5, step S4 includes:
S41, received by controller 401 and control instruction generate control signal;
S42, first signal of telecommunication of control signal is converted to the first of control signal by the first optical-electrical converter 3011 Optical signal;
S43, the first optical signal of control signal is transferred to the second optical-electrical converter 3012 by the first optical fiber 3013, and Second signal of telecommunication that the first optical signal of control signal is converted to by the second optical-electrical converter 3012 for control signal, send to DP bus network 201.
In the present embodiment, the communication main station under control system 40 apart from slave station farther out, therefore slave station is sent detection letter Number optical signal is converted the electrical signal to by opto-electronic conversion device assembly 30, reconvert is into electricity after optical fiber carries out long-distance transmissions Signal.
Specifically, referring to Fig. 5, step S5 includes:
Control signal after S51, reception conversion;
S52, judge whether the operation of main transmission ends is normal;
If the main transmission ends of S53 are normally run, by conversion after control signal transmitted to first existing by main transmission ends 1011 Field device 101;
If the main transmission ends operation troubles of S54, by conversion after control signal transmitted to first by redundant transmission end 1012 Field apparatus 101;
Isolating valve 1013 or feed pump 1014 in S55, primary scene equipment 101 is opened when receiving control signal, is led to Cross and control being turned on and off for each isolating valve 1013 or feed pump 1014, complete the water supply to steam generator secondary side;Tool Body ground, referring to Fig. 5, step S2 also includes:
S25, when controller 401 runs over loading or during failure, start redundant manipulator 402, by the 3rd opto-electronic conversion Device 3021 receives detection signal, and the 3rd signal of telecommunication of detection signal is converted to the second optical signal of detection signal;
S26, the second optical signal of detection signal is transferred to the 4th optical-electrical converter 3022 by the second optical fiber 3023, and The 4th signal of telecommunication that the second optical signal of detection signal is converted to by the 4th optical-electrical converter 3022 for detection signal, send to Redundant manipulator 402.
Specifically, referring to Fig. 5, step S3 also includes:
S35, the 4th signal of telecommunication for receiving simultaneously processing detection signal;
S36, the 4th electric signal transmission of detection signal after Ethernet is by process are to terminal module 403;
S37, the 4th signal of telecommunication of detection signal after 403 reception processing of terminal module, and generate control instruction;
S38, control instruction is transmitted to redundant manipulator 402 by Ethernet.
Specifically, referring to Fig. 5, step S4 also includes:
S44, the 4th signal of telecommunication for receiving simultaneously processing detection signal by redundant manipulator 402;
S45, the 3rd signal of telecommunication of control signal is converted to the second of control signal by the 4th optical-electrical converter 3022 Optical signal;
S46, the second optical signal of control signal is transferred to the 3rd optical-electrical converter 3021 by the second optical fiber 3023, and The 4th signal of telecommunication that the second optical signal of control signal is converted to by the 3rd optical-electrical converter 3021 for control signal, send to DP bus network 201.
The present embodiment by scene equipment level in water supply system comprehensively using field bus technique, on a network segment Mount multiple field instruments and field apparatus, reduce the usage amount of the cable and crane span structure of connection, reduce install and design Workload;Simultaneously using the field bus device of redundancy, it is ensured that the safety of redundancy, and optimize network segment division;By using Smart devices, improve precision, the capacity of resisting disturbance of detection signal, are conducive to accuracy and the reliability of system, and are Later maintenance provides facility.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
It should be noted that:The field bus system based on nuclear power station water supply system that above formula embodiment is provided is realizing base When the method for the fieldbus of nuclear power station water supply system, only it is illustrated with the division of above-mentioned each functional module, actual In application, can as desired by above-mentioned functions distribution be completed by different functional modules, will equipment internal structure draw It is divided into different functional modules, to complete all or part of function described above.In addition, above-described embodiment provide based on The field bus system of nuclear power station water supply system belongs to same with the embodiment of the method for the fieldbus based on nuclear power station water supply system One design, which implements process and refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that realizing all or part of step of above-described embodiment, hardware can be passed through To complete, it is also possible to which the hardware for being instructed correlation by program is completed, and described program can be stored in a kind of computer-readable In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and Within principle, any modification, equivalent substitution and improvements that is made etc. should be included within the scope of the present invention.

Claims (17)

1. a kind of field bus system based on nuclear power station water supply system, for nuclear power station water supply system field apparatus and nuclear power station The communication connection of control system, including:
Fieldbus networks, field equipment connecting, for coming from control system to described existing by different transmission path transmission The control signal of field device and reception come from the detection signal of field apparatus;
Opto-electronic conversion device assembly, connects the fieldbus networks and control system respectively, for according to different transmission path institute The control signal of acquisition or detection signal, the two times transfer for carrying out photosignal to control signal or detection signal will conversion Control signal afterwards is sent to the fieldbus networks, or by conversion after detection signal send to the control system.
2. system according to claim 1, it is characterised in that the fieldbus networks are Profibus bus network, The Profibus bus network includes DP bus network and PA bus network, the DP bus network and PA bus network Form the different transmission path;
The opto-electronic conversion device assembly include being connected in different transmission path for transmitting the detection signal and control First opto-electronic conversion device assembly of signal processed and for when controller over loading or failure in control system, transmission is described Detection signal and the second opto-electronic conversion device assembly of control signal;
The field apparatus is used in unit starting, stand-by heat and shuts down the feedwater ginseng for gathering the water supply system under operating mode Number, and supply water to steam generator secondary side, maintain the water level of steam generator secondary side.
3. system according to claim 2, it is characterised in that the first opto-electronic conversion device assembly includes:
First optical-electrical converter, connects the control system, is converted to control for first signal of telecommunication by the control signal First optical signal transmission of signal is additionally operable to for the first optical signal of detection signal to be converted to detection letter to the second optical-electrical converter Number the second electric signal transmission to the control system;
Second optical-electrical converter, one end connect the DP bus network and PA bus network respectively, and the other end passes through the first optical fiber Connect first optical-electrical converter, for the second telecommunications that the first optical signal by the control signal is converted to control signal Number transmit to the DP bus network, be additionally operable to the detection signal for receiving the PA bus network, and by the detection signal First signal of telecommunication is converted to the first optical signal transmission of detection signal to first optical-electrical converter;
The second opto-electronic conversion device assembly includes:
3rd optical-electrical converter, connects the DP bus network and PA bus network respectively, for receiving the PA bus network Detection signal, the 3rd signal of telecommunication of the detection signal is converted to the second optical signal transmission of detection signal to the 4th photoelectricity Transducer, is additionally operable to for the second optical signal of the control signal to be converted into the 4th electric signal transmission of control signal to DP buses Network;
4th optical-electrical converter, connects the control system, and connects the 3rd optical-electrical converter by the second optical fiber, be used for Second optical signal of the detection signal is converted to the 4th electric signal transmission to the control system, is additionally operable to the control 3rd signal of telecommunication of signal is converted to the second optical signal transmission of control signal to the 3rd optical-electrical converter.
4. system according to claim 3, it is characterised in that the control system includes:
Controller, connects first optical-electrical converter, for receiving and processing the detection signal, is additionally operable to be referred to according to control Order generates the control signal;
Redundant manipulator, connects the 4th optical-electrical converter, for when the controller over loading or failure, receiving simultaneously The detection signal is processed, and is additionally operable to the control signal be generated according to control instruction;
Terminal module, connects the controller and redundant manipulator by Ethernet, for the process according to the detection signal As a result control instruction is generated;
The controller is additionally operable to, when itself over loading or failure, start redundant manipulator.
5. system according to claim 2, it is characterised in that the field apparatus includes primary scene equipment and second existing Field device, the primary scene equipment are included for connecting at least one isolating valve and at least of the DP bus network respectively Individual feed pump, the secondary scene equipment include at least one manometer and at least for connection PA bus network respectively Individual flow instrument, wherein,
Control signal after the DP bus network is used for conversion is sent to the corresponding separate pump or feed pump and executes not Same action, supplies water to steam generator secondary side;
The PA bus network is used for detection signal by the first opto-electronic conversion device assembly or the second optical-electrical converter group Part transfers to the control system after carrying out secondary opto-electronic conversion.
6. system according to claim 5, it is characterised in that the DP bus network includes two tunnel transmission ends:Main transmission End and redundant transmission end, the end of each of which road transmission ends are correspondingly arranged on terminal resistance, and each terminal resistance is used for Reduce signaling reflex.
7. system according to claim 6, it is characterised in that also set between the PA bus network and secondary scene equipment PA junction boxs are equipped with, the PA junction boxs are used for for PA signals being split as multiple PA signals, and there is short-circuit protection and overload to protect Shield.
8. system according to claim 7, it is characterised in that each isolating valve and feed pump all contain two-way reception End, connects the main transmission ends and redundant transmission end, respectively for when the main transmission ends are normally run, receiving and executing institute State the control signal after the conversion of main transmission ends transmission;In the main transmission ends operation troubles, receive and execute and be described Control signal after the conversion of redundant transmission end transmission;Each manometer and flow instrument are connected to through institute Single PA signals after PA junction boxs split are stated, for gathering the feedwater parameter of the water supply system, detection signal is generated.
9. the system according to claim 4 or 5, it is characterised in that the field bus system be divided into the first level, second Level and third layer level three-decker, wherein,
First level is field control level, including the primary scene equipment and secondary scene equipment, for the detection signal Collection and the control signal execution;
Second level is process control level, including the controller and redundant manipulator, for processing to detection signal;
Third layer level is operational control level, including the terminal module and the data handling equipment of correlation, for according to detection letter Number result generate control signal.
10. a kind of method of the fieldbus based on nuclear power station water supply system, its spy are that methods described includes:
S1, unit starting, stand-by heat and shut down operating mode under, by field apparatus gather the water supply system feedwater ginseng Number, generates detection signal, is transferred to fieldbus networks;
S2, receive the detection signal, after opto-electronic conversion device assembly carries out the two times transfer of photosignal, by conversion after Detection signal is sent to control system;
S3, receive and process the detection signal, control signal is sent according to result;
S4, the reception control signal, the two times transfer for carrying out photosignal by the opto-electronic conversion device assembly, after changing Control signal send to the fieldbus networks;
S5, receive and the control signal is sent to the field apparatus, control the field apparatus secondary to steam generator Side is supplied water, and maintains the water level of steam generator secondary side.
11. methods according to claim 10, it is characterised in that step S2 includes:
S21, the detection signal is received by the PA bus network;
S22, judge controller operation whether normal;S23, when the controller normally runs, by the second optical-electrical converter The detection signal is received, and first signal of telecommunication of the detection signal is converted to the first optical signal of detection signal;
S24, first optical-electrical converter is given the first optical signal of the detection signal by the first fiber-optic transfer, and pass through First optical signal of the detection signal is converted to first optical-electrical converter second signal of telecommunication of detection signal, send to The controller.
12. methods according to claim 10, it is characterised in that step S3 includes:
S31, second signal of telecommunication for receiving and processing the detection signal;
S32, the second electric signal transmission of the detection signal after Ethernet is by process are to terminal module;
S33, second signal of telecommunication of the detection signal after the terminal module reception processing, and generate control instruction;
S34, the control instruction is transmitted to the controller by Ethernet.
13. methods according to claim 10, it is characterised in that step S4 includes:
S41, the control instruction is received by the controller and generates control signal;
S42, the first light letter that first signal of telecommunication of the control signal is converted to control signal by the first optical-electrical converter Number;
S43, second optical-electrical converter is given the first optical signal of the control signal by the first fiber-optic transfer, and pass through First optical signal of the control signal is converted to second optical-electrical converter second signal of telecommunication of control signal, send to The DP bus network.
14. methods according to claim 10, it is characterised in that step S5 includes:
Control signal after S51, the reception conversion;
S52, judge whether the operation of main transmission ends is normal;
If the main transmission ends of S53 are normally run, by conversion after the control signal transmitted by main transmission ends and set to primary scene Standby;
If the main transmission ends operation troubles of S54, by conversion after the control signal transmitted to primary scene by redundant transmission end Equipment;
Open when isolating valve or feed pump in S55, primary scene equipment receives the control signal, by control each every From being turned on and off for valve or feed pump, the water supply to steam generator secondary side is completed.
15. methods according to claim 11, it is characterised in that step S2 also includes:
S25, when the controller runs over loading or during failure, start redundant manipulator, received by the 3rd optical-electrical converter The detection signal, and the 3rd signal of telecommunication of the detection signal is converted to the second optical signal of detection signal;
S26, the 4th optical-electrical converter is given the second optical signal of the detection signal by the second fiber-optic transfer, and pass through Second optical signal of the detection signal is converted to 4th optical-electrical converter the 4th signal of telecommunication of detection signal, send to The redundant manipulator.
16. methods according to claim 12, it is characterised in that step S3 also includes:
S35, the 4th signal of telecommunication for receiving and processing the detection signal;
S36, the 4th electric signal transmission of the detection signal after Ethernet is by process are to terminal module;
S37, the 4th signal of telecommunication of the detection signal after the terminal module reception processing, and generate control instruction;
S38, the control instruction is transmitted to the redundant manipulator by Ethernet.
17. methods according to claim 13, it is characterised in that step S4 also includes:
S44, the 4th signal of telecommunication for receiving and processing the detection signal by the redundant manipulator;
S45, the second light letter that the 3rd signal of telecommunication of the control signal is converted to control signal by the 4th optical-electrical converter Number;
S46, the 3rd optical-electrical converter is given the second optical signal of the control signal by the second fiber-optic transfer, and pass through Second optical signal of the control signal is converted to 3rd optical-electrical converter the 4th signal of telecommunication of control signal, send to The DP bus network.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107885172A (en) * 2017-10-31 2018-04-06 中广核工程有限公司 A kind of monitoring system and method for nuclear power station joint pump house
CN109581923A (en) * 2018-12-05 2019-04-05 深圳中广核工程设计有限公司 Nuclear power station feed water control system
CN113433978A (en) * 2021-07-01 2021-09-24 华能国际电力股份有限公司上安电厂 Unit water supply control system optimization method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204143238U (en) * 2014-09-22 2015-02-04 西安西热控制技术有限公司 Thermal power plant based on field bus technique purges control system
CN105182951A (en) * 2015-10-14 2015-12-23 华能南京金陵发电有限公司 Equipment management system based on intelligent motor controllers and installation method
CN105721059A (en) * 2016-04-06 2016-06-29 国网安徽省电力公司培训中心 Profibus-DP photoelectric signal conversion system
CN105933170A (en) * 2016-07-07 2016-09-07 北京华电天仁电力控制技术有限公司 Profibus data acquisition system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204143238U (en) * 2014-09-22 2015-02-04 西安西热控制技术有限公司 Thermal power plant based on field bus technique purges control system
CN105182951A (en) * 2015-10-14 2015-12-23 华能南京金陵发电有限公司 Equipment management system based on intelligent motor controllers and installation method
CN105721059A (en) * 2016-04-06 2016-06-29 国网安徽省电力公司培训中心 Profibus-DP photoelectric signal conversion system
CN105933170A (en) * 2016-07-07 2016-09-07 北京华电天仁电力控制技术有限公司 Profibus data acquisition system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘东波等: "现场总线和智能仪表与核电厂DCS的接口分析及应用", 《自动化仪表》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107885172A (en) * 2017-10-31 2018-04-06 中广核工程有限公司 A kind of monitoring system and method for nuclear power station joint pump house
CN109581923A (en) * 2018-12-05 2019-04-05 深圳中广核工程设计有限公司 Nuclear power station feed water control system
CN109581923B (en) * 2018-12-05 2021-10-15 深圳中广核工程设计有限公司 Water supply control system for nuclear power station
CN113433978A (en) * 2021-07-01 2021-09-24 华能国际电力股份有限公司上安电厂 Unit water supply control system optimization method

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