CN112968953A - Be applied to electric power monitoring communication machine of highway tunnel electric substation - Google Patents
Be applied to electric power monitoring communication machine of highway tunnel electric substation Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 217
- 238000012544 monitoring process Methods 0.000 title claims abstract description 50
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 206010063385 Intellectualisation Diseases 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 3
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- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
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Abstract
The invention relates to an electric power monitoring communication machine applied to a highway tunnel substation, which comprises a communication cabinet and a server, wherein the communication cabinet comprises a communication host and a plurality of communication slave machines; the communication host comprises a host main controller, a host RJ45 network port and six types of network cables with shielding layers, and is internally provided with a host communication software protocol module for compatibly connecting different power equipment; the communication slave machine comprises a slave machine main controller, a slave machine RJ45 network port and a super six types of network cables with shielding layers, and a slave machine communication software protocol module for compatibly connecting different power equipment is arranged in the communication slave machine; the communication host and the communication slave are connected with the power equipment of the substation through RS485 full duplex data lines, the communication host is connected with the server through the switch, and the communication host transmits the running states of the power equipment of the substation, acquired by the communication host and the communication slave, to the server through a network, so that the informatization and the intellectualization of the substation are realized.
Description
Technical Field
The invention relates to the technical field of highway safety facilities, in particular to a power monitoring communication machine applied to a highway tunnel substation.
Background
The chinese patent application with publication number CN107505911A provides a power equipment monitoring system, which includes a data acquisition terminal for acquiring data information of power equipment, a PLC equipment electrically connected to the data acquisition terminal, a main control module electrically connected to the PLC equipment, a first ethernet communication module electrically connected to the main control module, and a monitoring server communicatively connected to the first ethernet communication module.
In order to ensure the power supply of equipment such as illumination, air exhaust, video monitoring, fire alarm, emergency telephone and the like of the highway tunnel, a power substation is arranged at the tunnel opening, and the form of the power substation is generally divided into a machine room power substation and a box type power substation according to the length of the tunnel and the size of a power supply load.
And data acquisition is carried out on each power device in the substation so as to monitor the running state of each power device and carry out fault troubleshooting. With the development of informatization and intellectualization, the network monitoring can be carried out on the collected data of the power equipment, so that the equipment fault can be checked in time, and the safety of the highway tunnel is ensured.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an electric power monitoring communication machine applied to an expressway tunnel substation, which is used for acquiring the running states of all electric power equipment of the expressway tunnel substation in real time and uploading the running states to a server of a monitoring center through a network so as to realize informatization and intellectualization of the substation.
In order to achieve the above object, the present invention adopts the following technical solutions.
The invention provides an electric power monitoring communication machine applied to a highway tunnel substation, which comprises a communication cabinet and a server, wherein the communication cabinet is connected with the substation and the server; the communication cabinet comprises a communication host and a plurality of communication slaves; the communication host comprises a host main controller, a host RJ45 network port and six types of network cables with shielding layers, and is internally provided with a host communication software protocol module for compatibly connecting different power equipment; the communication slave machine comprises a slave machine main controller, a slave machine RJ45 network port and a super six types of network cables with shielding layers, and a slave machine communication software protocol module for compatibly connecting different power equipment is arranged in the communication slave machine; the communication host and the communication slave are connected with power equipment of the substation through RS485 full duplex data lines, the communication host is connected with the server through a switch, and the communication host transmits the running state of each power equipment of the substation, acquired by the communication host and the communication slave, to the server through a network.
Preferably, the communication slave is connected with a host RJ45 network port of the communication host, and the communication slave gets power through the host RJ45 network port.
In any of the above technical solutions, preferably, the power equipment of the substation uses a single node to access the communication host or the communication slave through the RS485 communication port, and the communication host or the communication slave performs parallel data acquisition on all the RS485 ports.
In any of the above technical solutions, it is preferable that the communication host has 6 RS485 interfaces, and is connected to the temperature and humidity sensor, the UPS, or the EPS through the RS485 interfaces.
In any of the above technical solutions, preferably, the communication slave device is installed at a low voltage cabinet position, and is connected with the low voltage meter and the power quality analyzer through an RS485 interface.
In any of the above technical solutions, preferably, the communication slave device is installed at a high-voltage cabinet position, and is connected with the high-voltage instrument, the electrical contact online temperature measuring instrument, and the generator through an RS485 interface.
In any one of the above technical solutions, preferably, the host controller includes 2 STM32 singlechips, and 8 serial ports are from taking to every STM32 singlechip, and one of them STM32 singlechip is connected the communication slave machine, and another STM32 singlechip is connected 6 RS485 serial ports that the communication host machine is from taking and is carried out data upload.
In any one of the above technical solutions, preferably, the slave host controller includes 1 STM32 singlechip, which has 8 serial ports, 1 serial port is connected to the communication host, and the other 7 serial ports are used for data acquisition of the power equipment through the RS485 conversion circuit.
In any of the above technical solutions, preferably, the communication host and the plurality of communication slaves are disposed in a highway tunnel substation, the communication host is connected to a highway intranet through a host RJ45 gateway connection switch, and a TCP protocol in a host communication software protocol module is used to upload the operating states of the electrical devices in the substation to a server of a highway section management center.
In any of the above technical solutions, preferably, the server includes a server communication module, and the server implements data interaction with the power monitoring system through the server communication module.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the power monitoring communication machine adopts a mode of a host and an extended slave, the host and the slave communicate in a bidirectional RS485 differential full duplex data communication mode, physical interfaces are RJ45 network ports and ultra-six types of network cables with shielding layers, and a slave power supply also gets power from the RJ45 network port. The host computer and the slave computer are internally provided with a plurality of software protocols, and can be compatible with electric power equipment of different manufacturers and different models by remotely or locally setting the type and the model of equipment connected with each port.
The power monitoring communication machine is used for power monitoring of an expressway tunnel substation, can acquire the running states of all power equipment of the expressway tunnel substation in real time, uploads the running states to a server of a monitoring center through a network, realizes informatization and intellectualization of the substation, and is a main hardware device of a power monitoring, intellectualization and unmanned operation and maintenance system of a tunnel substation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic wiring diagram of a host RJ45 plug of a preferred embodiment of a power monitoring communicator according to the present invention;
fig. 2 is a schematic wiring diagram of a slave RJ45 plug according to a preferred embodiment of the power monitoring communicator;
FIG. 3 is a schematic diagram of master and slave port communications for a preferred embodiment of a power monitoring communicator in accordance with the present invention;
FIG. 4 is a schematic diagram of the communication principle of a preferred embodiment of the power monitoring communicator according to the present invention;
fig. 5 is a schematic diagram of the overall structure of a preferred embodiment of the power monitoring communicator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to overcome the technical problem of communication of power monitoring of an expressway tunnel substation in the prior art, the embodiment of the invention provides a power monitoring communication machine applied to the expressway tunnel substation, which is used for acquiring the running state of each power device of the expressway tunnel substation in real time and uploading the running state to a server of a monitoring center through a network so as to realize informatization and intellectualization of the substation.
The structure, technical features and implementation form of the power monitoring communication machine applied to the highway tunnel substation according to the present embodiment are described below with reference to fig. 1 to 5.
The power monitoring communication machine applied to the highway tunnel substation comprises a communication cabinet and a server, wherein the communication cabinet is connected with the substation and the server; the communication cabinet comprises a communication host and a plurality of communication slaves; the communication host comprises a host main controller, a host RJ45 network port and six types of network cables with shielding layers, and is internally provided with a host communication software protocol module for compatibly connecting different power equipment; the communication slave machine comprises a slave machine main controller, a slave machine RJ45 network port and a super six-type network cable with a shielding layer, and a slave machine communication software protocol module for compatibly connecting different power equipment is arranged in the communication slave machine; the communication host and the communication slave are connected with the power equipment of the substation through RS485 full duplex data lines, the communication host is connected with the server through the switch, and the communication host transmits the running state of each power equipment of the substation, acquired by the communication host and the communication slave, to the server through a network.
In this embodiment, the communication slave is connected to a host RJ45 network port of the communication host, and the communication slave obtains power through the host RJ45 network port.
In this embodiment, the power equipment of the substation adopts a single-node access communication host or communication slave through the RS485 communication port, and the communication host or communication slave performs parallel data acquisition on all the RS485 ports.
In this embodiment, the communication host computer is from taking 6 RS485 interfaces, is connected with temperature and humidity sensor, UPS or EPS through RS485 interface.
In this embodiment, the communication slave device is located at the low-voltage cabinet and connected to the low-voltage instrument and the power quality analyzer through the RS485 interface.
In this embodiment, the communication slave device is disposed at the high-voltage cabinet and connected to the high-voltage instrument, the electrical contact online temperature measuring instrument, and the generator through the RS485 interface.
In this embodiment, host computer main control unit includes 2 STM32 singlechips, and 8 serial ports are from taking to every STM32 singlechip, and one of them STM32 singlechip is connected the communication and is followed the machine, and another STM32 singlechip is connected 6 RS485 serial ports that the communication host computer was from taking and is carried out data upload.
In this embodiment, from the main control unit of computer includes 1 STM32 singlechip, and it is from taking 8 serial ports, 1 serial ports connection communication host computer, and 7 serial ports carry out power equipment data acquisition through RS485 converting circuit in addition.
In this embodiment, the communication host and the plurality of communication slaves are arranged in the highway tunnel substation, the communication host is connected to the highway intranet through the RJ45 gateway connection switch of the host, and the TCP protocol in the host communication software protocol module is used to upload the operating state of each electrical device in the substation to the server of the highway section management center.
In this embodiment, the server includes a server communication module, and the server realizes data interaction with the power monitoring system through the server communication module.
The power monitoring communication machine of the embodiment collects the running states of the power equipment of the highway tunnel substation in real time, uploads the running states to the server of the monitoring center through the network, realizes informatization and intellectualization of the substation, and is main hardware equipment of a tunnel substation power monitoring, intellectualization and unmanned operation and maintenance system.
The power monitoring communication machine adopts a mode of a host and an extended slave, the communication host and the communication slave adopt a bidirectional RS485 differential full duplex data communication mode, physical interfaces are RJ45 network ports and ultra-six types of network cables with shielding layers, and a power supply of the communication slave also gets power from the RJ45 network port. The communication host and the communication slave are internally provided with a plurality of software protocols, and can be compatible with electric power equipment of different manufacturers and different models by remotely or locally setting the type and the model of equipment connected with each port.
Because the manufacturers and the models of the electric power equipment of the substation are different, the communication protocols of the equipment are different, and sometimes, even if the equipment of the same manufacturer, the same type and different production years is used, the software protocols are also different. In order to ensure that the power monitoring communication machine can read and analyze data of all power devices and meanwhile ensure that the communication machine has universality, the power communication machine of the embodiment adopts a modularized and extensible design, various software protocols are built in, each port can be remotely and locally set according to the field conditions, and the set contents comprise the connected device type, the communication protocol, the baud rate and the like.
In addition, in order to draw a current curve at the starting moment of equipment with a soft starter, such as a jet fan, the power monitoring communication machine of the embodiment should be arranged to quickly realize data acquisition of 2-3 times per second for each power meter, that is, in order to guarantee the data acquisition speed, an RS485 communication port of each power meter is accessed to the power communication machine through a single node, that is, each RS485 port of a host machine and a slave machine of the communication machine is only connected with one power meter, and the communication machine performs parallel data acquisition on all RS485 ports. However, the number of power equipment in substations of different scales varies greatly, and in order to adapt to substations of different scales, the power monitoring communication machine adopts a system networking mode of a master machine and an extended slave machine.
The power monitoring communication machine adopts a host computer and slave computer distributed wiring mode, in order to realize reliable data communication in a complex electromagnetic interference environment of a substation, the communication host computer and the communication slave computer adopt a bidirectional differential full-duplex data communication mode, physical interfaces are RJ45 network ports and ultra-six types of network cables with shielding layers, and the communication mode has strong anti-interference performance. Meanwhile, the power supply of the communication slave computer is also supplied with power by the communication interface, and the communication slave computer has the characteristic of convenient wiring.
Fig. 1 shows the wiring definition of an RJ45 plug of a communication master, and fig. 2 shows the wiring definition of an RJ45 plug of a communication slave. The total number of RJ45 type network cable plugs is 8, the pins 1 and 2 of a communication host plug of the power monitoring communication machine are respectively used for connecting the A, B end of the RS485 level for data transmission, the pins 3 and 4 are respectively used for connecting the A, B end of the RS485 level for data reception, the pins 5 and 6 are connected with the anode of a power supply of a communication slave machine, and the pins 7 and 8 are connected with the cathode of the power supply of the communication slave machine, as shown in figure 1. The data transmitting and receiving ends of the communication slave are just opposite to the wiring sequence of the communication host, and the power supply ends are consistent with the wiring sequence of the communication host, as shown in figure 2. The shielding layer of the network cable is connected with the metal shielding shell of the RJ45 plug, the signal ground of the communication host and the communication slave is connected, and the signal ground is connected with the ground through the metal shell of the communication host.
In specific implementation, all communication data ports of the power monitoring communication machine are numbered uniformly, for example, each communication slave machine has 7 data ports, the number of the data port of the communication slave machine 1 is 1-7, the number of the data port of the communication slave machine 2 is 8-14, and so on. The communication host sets the device type and protocol version connected with each port respectively through remote or local, establishes a data port communication protocol table, and then sends the communication protocol table to each communication slave, the communication slave acquires the data of the port of the communication slave according to the protocol table, and the port communication is as shown in fig. 3.
In specific implementation, a hardware circuit of the power monitoring communication host machine adopts 2 STM32 single-chip microcomputers, each single-chip microcomputer is provided with 8 serial ports, one single-chip microcomputer is used for being connected with a communication slave machine, the other single-chip microcomputer is used for uploading 6 RS485 serial ports and data of the communication host machine, and the RS485 serial ports of the communication host machine can be used for collecting equipment data nearby without being forwarded by the communication slave machine. The communication slave machine adopts 1 singlechip as a main controller, the singlechip is provided with 8 serial ports, 1 serial port is used for connecting the communication master machine, the other 7 serial ports are used for collecting the data of the power equipment through an RS485 conversion circuit, and the principle of the power monitoring communication machine is shown in figure 4.
A communication machine (including a communication host and a communication slave) of the power monitoring system is deployed in a highway tunnel substation and used for acquiring states of electrical devices in the substation, the communication host is connected to an intranet of a highway through an RJ45 network port connection switch, and a TCP protocol is adopted to upload the states of the electrical devices to a server of a highway section management center, and a system schematic diagram is shown in fig. 5.
The 6 RS485 interfaces of the communication host are generally used for connecting equipment which is close to a communication cabinet, such as a temperature and humidity sensor, a UPS or an EPS; the communication machine slave machines are generally installed nearby on collected electrical equipment, such as a low-voltage cabinet collection low-voltage instrument and a power quality analyzer, a high-voltage cabinet collection high-voltage instrument, an electrical node online temperature measuring instrument and a generator.
The power monitoring communication machine (comprising a communication host and a communication slave) respectively collects the equipment state data of each port according to a port communication protocol table, wherein the protocol table indicates the equipment type and the software version number connected with each port. The communication slave of the power monitoring communication machine collects data of all ports under the slave, packages the data and sends the packaged data to the communication host of the power communication machine, and the communication host packages the port data of all the communication slaves and the communication host and sends the packaged port data to a server of a road section management center through an expressway intranet.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention; the above description is only for the specific embodiment of the present invention, and is not intended to limit the scope of the present invention; any modification, equivalent replacement, improvement and the like of the technical solution of the present invention by a person of ordinary skill in the art without departing from the design spirit of the present invention shall fall within the protection scope determined by the claims of the present invention.
Claims (10)
1. The utility model provides an electric power monitoring communication machine for highway tunnel electric substation, includes communication rack and server, the electric substation is connected to the communication rack and server, its characterized in that: the communication cabinet comprises a communication host and a plurality of communication slaves; the communication host comprises a host main controller, a host RJ45 network port and six types of network cables with shielding layers, and is internally provided with a host communication software protocol module for compatibly connecting different power equipment; the communication slave machine comprises a slave machine main controller, a slave machine RJ45 network port and a super six types of network cables with shielding layers, and a slave machine communication software protocol module for compatibly connecting different power equipment is arranged in the communication slave machine; the communication host and the communication slave are connected with power equipment of the substation through RS485 full duplex data lines, the communication host is connected with the server through a switch, and the communication host transmits the running state of each power equipment of the substation, acquired by the communication host and the communication slave, to the server through a network.
2. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the communication slave computer is connected with a host RJ45 network port of the communication host computer, and the communication slave computer obtains electricity through the host RJ45 network port.
3. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the power equipment of the substation is connected with the communication host or the communication slave through the RS485 communication port by adopting a single node, and the communication host or the communication slave performs parallel data acquisition on all the RS485 ports.
4. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the communication host computer is provided with 6 RS485 interfaces and is connected with a temperature and humidity sensor, a UPS or an EPS through the RS485 interfaces.
5. The power monitoring communication machine applied to the highway tunnel substation according to claim 2, wherein: the communication slave device is arranged at the position of the low-voltage cabinet and is connected with the low-voltage instrument and the power quality analyzer through an RS485 interface.
6. The power monitoring communication machine applied to the expressway tunnel substation according to claim 5, wherein: the communication slave machine is arranged at the position of the high-voltage cabinet and is connected with the high-voltage instrument, the electric contact on-line temperature measuring instrument and the generator through the RS485 interface.
7. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the main machine main controller comprises 2 STM32 single-chips, each STM32 single-chip is from 8 serial ports, one STM32 single-chip is connected with the communication slave, and another STM32 single-chip is connected with 6 RS485 serial ports of the communication main machine from the band and is carried out data upload.
8. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the slave main controller comprises 1 STM32 single chip microcomputer, 8 serial ports are arranged in the single chip microcomputer, 1 serial port is connected with a communication host, and the other 7 serial ports are used for carrying out data acquisition on power equipment through an RS485 conversion circuit.
9. The power monitoring communication machine applied to the highway tunnel substation according to claim 1, wherein: the communication host and the plurality of communication slave machines are arranged in the highway tunnel substation, the communication host is connected with the switch through a host RJ45 net port and is accessed into a highway inner net, and the running state of each electrical device in the substation is uploaded to a server of a highway section management center by adopting a TCP protocol in a host communication software protocol module.
10. The power monitoring communication machine applied to the highway tunnel substation according to claim 9, wherein: the server comprises a server communication module, and the server realizes data interaction with the power monitoring system through the server communication module.
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