CN106468899B - Communication connection system of upper computer and distribution circuit based on intelligent relay cross cabinet - Google Patents
Communication connection system of upper computer and distribution circuit based on intelligent relay cross cabinet Download PDFInfo
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- CN106468899B CN106468899B CN201610784922.5A CN201610784922A CN106468899B CN 106468899 B CN106468899 B CN 106468899B CN 201610784922 A CN201610784922 A CN 201610784922A CN 106468899 B CN106468899 B CN 106468899B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a communication connection system based on intelligent relay switch-over cabinet's host computer and distribution loop, is including being located the indoor more than 2 switch boards of distribution and being located the control unit of control room, the distribution in still be provided with through multicore cable connection the intelligent relay switch-over cabinet of the switch boards more than 2, still be provided with one end in the control room and pass through communication cable and connect intelligent relay switch-over cabinet, the other end passes through the switch board of network communication line connection control unit. The invention can integrate signals between the power distribution loop and the upper computer to and from the processor and complete information exchange in a communication mode. The multi-core cable between the original relay cross cabinet and the control system control cabinet, and the input and output clamping pieces and the wiring terminals corresponding to the secondary circuit in the control cabinet can be saved, and meanwhile, all functions realized in the prior art can be ensured. The reduction of materials and clamping pieces saves cost on one hand, and reduces construction difficulty and later maintenance difficulty on the other hand.
Description
Technical Field
The invention relates to an information exchange system for a power distribution system and an upper computer. In particular to a communication connection system of an upper computer and a power distribution loop based on an intelligent relay cabinet.
Background
In a large petrochemical industry production factory station, a secondary circuit in a power distribution indoor power distribution cabinet is connected to a control cabinet of a factory station control system point-to-point through a relay cabinet, and signals of state, faults, operation parameters, start-stop control and the like of field electric equipment are connected to the control cabinet of the factory station control system point-to-point through a relay cabinet, and the control cabinet exchanges data with an upper computer through network communication and performs configuration, so that man-machine interaction of the field electric equipment is realized.
In the relay cabinet, a plurality of relays are arranged, on one hand, the result of secondary circuit change is that the on-off state of a relay contact part is changed by controlling the relay to be arranged on a secondary circuit coil part, when a coil is electrified, a relay contact arranged on one side of the control cabinet is closed, an IO card of a control system receives a closing signal, when the secondary circuit does not supply power to a contactor coil, the relay contact on one side of the control system is separated, and the IO card of the control system receives an opening signal; on the other hand, the control cabinet also changes the on-off state of the relay contact part through controlling the coil part of the relay which is arranged on one side of the control cabinet, when the coil is electrified, the relay contact arranged on the secondary circuit side is closed, and when the IO clamping piece does not supply power to the relay coil, the relay contact on the secondary circuit side is separated.
The control system is an indispensable component of a modern factory and generally comprises an upper computer and a control cabinet, wherein the control cabinet is mainly provided with a power module, a CPU module, an input/output card (IO card), a communication card, a surge protection module, an air switch, a wiring terminal and other equipment. The input clamping piece receives signals sent by the secondary circuit point to point through the multi-core cable, all the signals are uploaded to the upper computer through the communication module after being processed by the CPU and displayed in the man-machine interaction interface. Through the man-machine interaction interface, an operator can send a control command, the command is sent to the communication clamping piece of the control cabinet through the communication cable, and the command is sent to the secondary loop through the multi-core cable point-to-point through the output clamping piece after being processed by the CPU.
As shown in fig. 1, the conventional relay cabinet adopts a point-to-point connection mode to transmit signals, and a large number of cables and input and output clamping pieces are required, so that the fault points are multiple and the point positions are distributed so as to be unfavorable for management.
Disclosure of Invention
The invention aims to solve the technical problem of providing a communication connection system of an upper computer and a power distribution circuit based on an intelligent relay cabinet, which can save cables and reduce construction time.
The technical scheme adopted by the invention is as follows: the utility model provides a communication connection system based on intelligent relay switch-over cabinet's host computer and distribution loop, is including being located the indoor more than 2 switch boards of distribution and being located the control unit of control room, the distribution in still be provided with through multicore cable connection the intelligent relay switch-over cabinet of the switch boards more than 2, still be provided with one end in the control room and pass through communication cable and connect intelligent relay switch-over cabinet, the other end passes through the switch board of network communication line connection control unit.
The intelligent relay cross cabinet comprises a CPU controller, wherein an analog input port of the CPU controller is correspondingly connected with signal output ends of current transmitters of all distribution loops in the power distribution cabinet through an expansion input port; the switching value output port of the CPU controller is correspondingly connected with the control signal input end of the control unit in each power distribution loop of the power distribution cabinet through each control signal output unit with the same structure; the switching value input port of the CPU controller is correspondingly connected with the output end of each power distribution loop in the power distribution cabinet through each state signal input unit with the same structure; an external communication interface of the CPU controller is connected with a wiring terminal of the control cabinet through a TTL (transistor-transistor logic) to 485 circuit, a photoelectric isolation module, a first anti-surge module, a wiring terminal and a communication cable in sequence; and the internal communication interface of the CPU controller is connected with the display.
Each control signal output unit comprises a DO expansion output port, a relay driving circuit and an output isolation relay which are sequentially connected in series, wherein the input end of the DO expansion output port is connected with the switching value output port of the CPU controller, the output end of the relay driving circuit is connected with the coil input end of the output isolation relay, and the contact of the output isolation relay is connected with the control signal input end of the control unit in the corresponding distribution circuit, and the output of the DO expansion output port is also connected with an alarm loudspeaker.
Each state signal input unit comprises a DI expansion input port and an input isolation relay which are sequentially connected, wherein the output end of the DI expansion input port is connected with the switching value input port of the CPU controller, the input end of the DI expansion input port is connected with the output contact of the input isolation relay, and the coil input end of the isolation relay is correspondingly connected with the output end of the power distribution loop.
The intelligent relay handover cabinet is internally provided with a power supply circuit which comprises a second anti-surge module, a UPS power supply 43 and a direct current voltage stabilizing circuit which are sequentially connected in series, wherein the input end of the second anti-surge module is connected with an external power supply, and the 5V output end of the direct current voltage stabilizing circuit is respectively connected with a CPU controller, an expansion input port, a control signal output unit and a state signal input unit for power supply; the 12V output end of the direct current voltage stabilizing circuit supplies power to the coil loop of the output isolation relay in the control signal output unit and the coil loop of the input isolation relay in the state signal input unit respectively.
The control cabinet comprises a power module, a CPU module, an Ethernet communication module, a MODBUS communication module and more than two standby clamping pieces which are sequentially connected in parallel on a pluggable guide rail, wherein the input end of the power module is connected with an external power supply through a power supply line. The MODBUS communication module is connected with the intelligent relay cabinet sequentially through the anti-surge protector, the wiring terminal and the communication cable, and the Ethernet communication module is connected with more than 2 computer network interfaces of the upper computers with the same structure in the control unit sequentially through the network communication line, the switch arranged in the control unit and the network communication line.
The communication connection system of the upper computer and the power distribution circuit based on the intelligent relay cabinet replaces the traditional relay cabinet by adopting the intelligent relay cabinet, so that information bidirectional exchange between the upper computer and the power distribution circuit is realized. The intelligent relay cabinet adopts a mode of taking a CPU as a core processor, can integrate signals between a power distribution loop and an upper computer to and from the processor, and can complete information exchange in a communication mode. The invention can save a large number of multicore cables between the original relay cabinet and the control system control cabinet, and input and output clamping pieces and wiring terminals corresponding to the secondary circuit in the control cabinet, and can ensure all functions realized in the prior art. The reduction of materials and clamping pieces saves cost on one hand, and reduces construction difficulty and later maintenance difficulty on the other hand.
Drawings
FIG. 1 is a schematic diagram of a connection structure between a power distribution cabinet and a control system upper computer in a power distribution room in the prior art;
fig. 2 is a schematic diagram of a connection structure between a power distribution cabinet and an upper computer of a control system in a power distribution room;
FIG. 3 is a schematic diagram of the connection structure of the distribution room and the intelligent relay cabinet according to the present invention;
FIG. 4 is a schematic diagram of the intelligent relay cabinet according to the present invention;
fig. 5 is a schematic diagram of the connection between the control cabinet and the upper computer.
In the figure
1: relay cabinet 2: power distribution cabinet
3: multicore cable 4: intelligent relay cabinet
41: CPU controller 42: second anti-surge module
43: UPS power source 44: DC voltage stabilizing circuit
411: analog input port 412: expansion input port
413: switching value output port 414: control signal output unit
415: switching value input port 416: status signal input unit
417: external communication interface 418: TTL-to-485 circuit
419: opto-isolator module 420: first anti-surge module
421: terminal 422: communication line
423: internal communication interface 424: display device
425: alarm horn 4141: DO extension delivery outlet
4142: relay driving circuit 4143: output isolation relay
4161: DI extension input port 4162: input isolation relay
5: and (3) a control cabinet 6: communication cable
7: control cabinet 71: power supply module
72: CPU module 73: ethernet communication module
74: MODBUS communication module 75: other clamping pieces
76: anti-surge protector 77: connecting terminal
78: power supply line 8: network communication line
9: control room 91: switch board
92: network communication line 93: computer network interface
94: upper computer
Detailed Description
The following describes the communication connection system of the upper computer and the distribution circuit based on the intelligent relay cabinet in detail with reference to the embodiments and the accompanying drawings.
As shown in fig. 2, the communication connection system of the upper computer and the distribution circuit based on the intelligent relay cross-connecting cabinet of the invention comprises more than 2 distribution cabinets 2 positioned in a distribution room a and a control unit 9 positioned in a control room B, and is characterized in that the intelligent relay cross-connecting cabinet 4 connected with the more than 2 distribution cabinets 2 through a multi-core cable 3 is also arranged in the distribution room a, one end of the intelligent relay cross-connecting cabinet 4 is also arranged in the control room B, and the other end of the intelligent relay cross-connecting cabinet is connected with the control cabinet 7 of the control unit 9 through a network communication line 8.
As shown in fig. 3 and 4, the intelligent relay connection cabinet 4 includes a CPU controller 41, and an analog input port 411 of the CPU controller 41 is correspondingly connected to a signal output end 21 of a current transmitter of each power distribution circuit in the power distribution cabinet 2 through an extension input port 412; the switching value output port 413 of the CPU controller 41 is correspondingly connected with the control signal input end 22 of the control unit in each power distribution circuit of the power distribution cabinet 2 through the control signal output units 414 with the same structure; the switching value input port 415 of the CPU controller 41 is correspondingly connected to the output end 23 of each power distribution circuit in the power distribution cabinet 2 through each status signal input unit 416 with the same structure; the external communication interface 417 of the CPU controller 41 is connected to the connection terminal 77 of the control cabinet 7 through the TTL-to-485 circuit 418, the photoelectric isolation module 419, the first anti-surge module 420, the connection terminal 421 and the communication cable 6 in sequence; the internal communication interface 423 of the CPU controller 41 is connected to the display 424.
Each control signal output unit 414 includes a DO expansion output port 4141, a relay driving circuit 4142, and an output isolation relay 4143, which are sequentially connected in series, wherein an input end of the DO expansion output port 4141 is connected to the switching value output port 413 of the CPU controller 41, an output end of the relay driving circuit 4142 is connected to a coil input end of the output isolation relay 4143, and a contact of the output isolation relay 4143 is connected to the control signal input end 22 of the control unit in the corresponding distribution circuit, and an output of the DO expansion output port 4141 is also connected to the alarm horn 425.
Each of the status signal input units 416 includes a DI extension input port 4161 and an input isolation relay 4162 connected in sequence, wherein an output end of the DI extension input port 4161 is connected to the switching value input port 415 of the CPU controller 41, an input end of the DI extension input port 4161 is connected to an output contact of the input isolation relay 4162, and a coil input end of the isolation relay 4162 is correspondingly connected to the output end 23 of the distribution circuit.
As shown in fig. 4, a power circuit is further disposed in the intelligent relay handover cabinet 4, and includes a second anti-surge module 42, a UPS power supply 43 and a dc voltage stabilizing circuit 44 that are sequentially connected in series, where an input end of the second anti-surge module 42 is connected to an external power supply, and a 5V output end of the dc voltage stabilizing circuit 44 is respectively connected to the CPU controller 41, the expansion input port 412, the control signal output unit 414 and the status signal input unit 416 to supply power; the 12V output of the dc voltage regulator 44 supplies power to the coil loops of the output isolation relay 4143 in the control signal output unit 414 and the input isolation relay 4162 in the status signal input unit 416, respectively.
As shown in fig. 5, the control cabinet 7 includes a power module 71, a CPU module 72, an ethernet communication module 73, a MODBUS communication module 74 and two or more standby cards 75 sequentially connected in parallel on a pluggable guide rail, where an input end of the power module 71 is connected to an external power source through a power supply line 78 to supply power to the equipment in the control cabinet 5. The MODBUS communication module 74 is connected with the intelligent relay handover cabinet 4 sequentially through the anti-surge protector 76, the connection terminal 77 and the communication cable 6, and the ethernet communication module 73 is connected with computer network interfaces 93 of more than 2 upper computers 94 with the same structure in the control unit 9 sequentially through the network communication line 8, the switch 91 and the network communication line 92 arranged in the control unit 9.
The communication connection system of the upper computer and the distribution circuit based on the intelligent relay cabinet is characterized in that a traditional point-to-point connection mode is replaced by a communication mode, information of field electric equipment in the distribution circuit is uploaded to the upper computer through communication, and meanwhile, control signals of the upper computer are received through the communication mode.
In the communication process, the control cabinet is used as a host computer, and the intelligent relay cabinet is used as a slave computer. The Ethernet communication module of the control cabinet receives the command sent by the upper computer, generates a reading machine command after being processed by the CPU module of the control cabinet, converts the communication content into a standard MODBUS protocol format, sends the communication content to the CPU communication terminal of the intelligent relay handover cabinet through the MODBUS communication module, carries out MODBUS protocol format coding on the switching signals or analog signals from the secondary circuits in the power distribution cabinet corresponding to each expansion interface, which are acquired by the CPU, according to the requirements, sends the signals to the MODBUS communication module of the control cabinet, and uploads the signals to the upper computer for display through the network communication line and the switch after the signals are processed by the CPU module, thereby realizing remote data acquisition and display functions.
The Ethernet communication module of the control cabinet receives the command sent by the upper computer, generates a write slave command after being processed by the CPU module of the control cabinet, converts the communication content into a standard MODBUS protocol format, sends the communication content to the CPU communication terminal of the intelligent relay handover cabinet through the MODBUS communication module, converts the signal into a switching signal or an analog signal after the CPU analysis, distributes the switching signal or the analog signal to each output expansion assembly according to the content, and sends the switching signal or the analog signal to each corresponding loop in the power distribution cabinet through the isolation relay and the multi-core cable to realize remote control.
In the embodiment of the communication connection system of the upper computer and the power distribution circuit based on the intelligent relay cabinet, the CPU of the intelligent relay cabinet adopts the model: STC12C5628AD (Shenzhen macrocrystal) product; the exchanger adopts the model: TL-SG1024DT (TP-LINK), S1700-24-AC (Huachen).
Claims (4)
1. The communication connection system of the upper computer and the distribution circuit based on the intelligent relay cabinet comprises more than 2 distribution cabinets (2) located in a distribution room (A) and a control unit (9) located in a control room (B), and is characterized in that the intelligent relay cabinet (4) connected with the more than 2 distribution cabinets (2) through a multi-core cable (3) is further arranged in the distribution room (A), one end of the intelligent relay cabinet (4) is connected with the control room (B) through a communication cable (6), and the other end of the intelligent relay cabinet is connected with the control cabinet (7) of the control unit (9) through a network communication line (8);
the intelligent relay cross cabinet (4) comprises a CPU controller (41), wherein an analog input port (411) of the CPU controller (41) is correspondingly connected with a signal output end (21) of a current transmitter of each power distribution loop in the power distribution cabinet (2) through an expansion input port (412); the switching value output port (413) of the CPU controller (41) is correspondingly connected with the control signal input end (22) of the control unit in each power distribution loop of the power distribution cabinet (2) through each control signal output unit (414) with the same structure; the switching value input port (415) of the CPU controller (41) is correspondingly connected with the output end (23) of each power distribution loop in the power distribution cabinet (2) through each state signal input unit (416) with the same structure; an external communication interface (417) of the CPU controller (41) is connected with a wiring terminal (77) of the control cabinet (7) through a TTL-to-485 circuit (418), a photoelectric isolation module (419), a first anti-surge module (420), a wiring terminal (421) and a communication cable (6) in sequence; an internal communication interface (423) of the CPU controller (41) is connected with a display (424);
the intelligent relay handover cabinet (4) is internally provided with a power supply circuit which comprises a second anti-surge module (42), a UPS (uninterrupted Power supply) 43 and a Direct Current (DC) voltage stabilizing circuit (44) which are sequentially connected in series, wherein the input end of the second anti-surge module (42) is connected with an external power supply, and the 5V output end of the DC voltage stabilizing circuit (44) is respectively connected with a CPU (central processing unit) controller (41), an expansion input port (412), a control signal output unit (414) and a status signal input unit (416) for supplying power; the 12V output end of the direct current voltage stabilizing circuit (44) respectively supplies power to coil loops of an output isolation relay (4143) in the control signal output unit (414) and an input isolation relay (4162) in the state signal input unit (416).
2. The communication connection system of the upper computer and the power distribution circuit based on the intelligent relay cabinet according to claim 1, wherein each control signal output unit (414) comprises a DO expansion output port (4141), a relay driving circuit (4142) and an output isolation relay (4143) which are sequentially connected in series, wherein the input end of the DO expansion output port (4141) is connected with the switching value output port (413) of the CPU controller (41), the output end of the relay driving circuit (4142) is connected with the coil input end of the output isolation relay (4143), and the contact point of the output isolation relay (4143) is connected with the control signal input end (22) of the control unit in the corresponding power distribution circuit, and the output end of the DO expansion output port (4141) is also connected with the alarm horn (425).
3. The communication connection system of the upper computer and the distribution circuit based on the intelligent relay cabinet according to claim 1, wherein each state signal input unit (416) comprises a DI expansion input port (4161) and an input isolation relay (4162) which are sequentially connected, wherein an output end of the DI expansion input port (4161) is connected with a switching value input port (415) of the CPU controller (41), an input end of the DI expansion input port (4161) is connected with an output contact of the input isolation relay (4162), and a coil input end of the isolation relay (4162) is correspondingly connected with an output end (23) of the distribution circuit.
4. The communication connection system of the upper computer and the power distribution circuit based on the intelligent relay cabinet according to claim 1, wherein the control cabinet (7) comprises a power module (71), a CPU module (72), an Ethernet communication module (73), a MODBUS communication module (74) and more than two standby clamping pieces (75) which are sequentially connected in parallel on a pluggable guide rail, wherein the input end of the power module (71) is connected with an external power supply through a power supply line (78); the MODBUS communication module (74) is connected with the intelligent relay cross-connecting cabinet (4) sequentially through the anti-surge protector (76), the wiring terminal (77) and the communication cable (6), and the Ethernet communication module (73) is connected with computer network interfaces (93) of more than 2 upper computers (94) with the same structure in the control unit (9) sequentially through the network communication line (8), the switch (91) arranged in the control unit (9) and the network communication line (92) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610784922.5A CN106468899B (en) | 2016-08-31 | 2016-08-31 | Communication connection system of upper computer and distribution circuit based on intelligent relay cross cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610784922.5A CN106468899B (en) | 2016-08-31 | 2016-08-31 | Communication connection system of upper computer and distribution circuit based on intelligent relay cross cabinet |
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| CN106468899A CN106468899A (en) | 2017-03-01 |
| CN106468899B true CN106468899B (en) | 2023-08-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107332113B (en) * | 2017-09-01 | 2024-05-28 | 张志明 | Electrical control device and power distribution cabinet |
| CN113671893A (en) * | 2021-08-20 | 2021-11-19 | 四川润昌机电工程有限公司 | Centralized control system and control method used in decentralized equipment environment |
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