CN112467872A - Electric power energy terminal equipment based on distributed acquisition framework - Google Patents

Electric power energy terminal equipment based on distributed acquisition framework Download PDF

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Publication number
CN112467872A
CN112467872A CN202011134156.0A CN202011134156A CN112467872A CN 112467872 A CN112467872 A CN 112467872A CN 202011134156 A CN202011134156 A CN 202011134156A CN 112467872 A CN112467872 A CN 112467872A
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Prior art keywords
module
power
circuit breakers
network cable
display module
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Granted
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CN202011134156.0A
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Chinese (zh)
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CN112467872B (en
Inventor
燕永振
刘立广
张校玮
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Weihai Ruien Electronic Co ltd
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Weihai Ruien Electronic Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses electric power energy source terminal equipment based on a distributed acquisition architecture, which comprises the following parts: the control cabinet is internally provided with three power supplies and a plurality of circuit breakers; the main module is fixedly arranged in the control cabinet and is connected with the three power supplies, and the main built-in power supply system of the main module converts alternating current of two hundred and twenty volts into direct current of five volts; the display module is fixedly arranged on a cabinet door of the control cabinet, a display screen displays electric parameters of outlets of the circuit breakers through page turning of touch buttons on the screen, the display module is connected to the main module through a network cable, and the main module supplies power to the display module through the network cable and performs data interaction with the display module; the slave modules are fixedly installed in the control cabinet, the number of the slave modules is the same as that of the circuit breakers, the slave modules correspond to the circuit breakers one by one, and the slave modules are close to the circuit breakers corresponding to the slave modules and are connected with the corresponding circuit breakers through ABC three-phase current sampling lines. The invention has the advantages of simple wiring mode and good stability.

Description

Electric power energy terminal equipment based on distributed acquisition framework
Technical Field
The invention relates to the technical field of power equipment, in particular to power energy source terminal equipment based on a distributed acquisition architecture.
Background
With the construction of large commercial districts and smart communities, the design of power distribution systems is more and more complex. More and more outlet devices of the power distribution cabinet are provided, and more electric parameter meters are provided at the outlet of each corresponding device. Most of the instruments are installed on the front door of the switch cabinet at present, and the switch equipment is installed inside the switch cabinet. Therefore, the sampling line of each instrument is led to the front door plate from the inside of the cabinet body, so that a large amount of manpower and wire loss is caused, and a large amount of wiring errors are caused due to large workload.
Compared with the traditional design scheme, the distributed acquisition architecture well saves wires and manpower. The collection module can be installed nearby according to the position of the switch, and the sampling lines are connected nearby, so that the workload of designers and field construction personnel is greatly simplified, and meanwhile, the wiring correctness is improved. The same physical quantities such as voltage and the like do not need to be repeatedly collected and wired, only the specific main module needs to collect, and the other distribution modules only need to collect current.
The prior art has the following defects: and repeating wiring and collecting voltage parameters. In the prior art, each instrument needs to collect voltage parameters, so that each instrument needs to be connected with at least 4 lines, and 10 instruments in one power distribution cabinet need to be connected with 40 line voltage lines.
The prior art has the following defects: the sampling line is too long in running length, so that a large amount of wires are wasted. The wire is routed from the inside of the switch cabinet to the front door panel by at least 0.5m to more than 1 m. Each instrument needs 10 lines, and one side of the power distribution cabinet needs to be connected with 100 meters more than 10 instruments. Causing a great deal of copper resource waste.
The prior art has the following defects: and each instrument of the on-site operation and maintenance personnel patrols the parameters, thereby wasting time and energy.
The prior art has four defects: because the number of the front and the back wiring is large, constructors can easily distinguish the wire numbers by mistake, wiring disorder is caused, and power utilization faults are caused.
Disclosure of Invention
The invention aims to solve the problems and designs the electric power energy terminal equipment based on the distributed acquisition architecture.
An electric power energy source terminal device based on a distributed acquisition architecture comprises the following parts:
the control cabinet is internally provided with three power supplies and a plurality of circuit breakers;
the main module is fixedly arranged in the control cabinet and is connected with the three power supplies, and the main built-in power supply system of the main module converts alternating current of two hundred and twenty volts into direct current of five volts;
the display module is fixedly arranged on a cabinet door of the control cabinet, a display screen displays electric parameters of outlets of the circuit breakers through page turning of touch buttons on the screen, the display module is connected to the main module through a network cable, and the main module supplies power to the display module through the network cable and performs data interaction with the display module;
the slave modules are fixedly installed in the control cabinet, the number of the slave modules is the same as that of the circuit breakers, the slave modules correspond to the circuit breakers one by one, and the slave modules are close to the circuit breakers corresponding to the slave modules and are connected with the corresponding circuit breakers through ABC three-phase current sampling lines.
The network cable is an eight-core network cable, and eight cores of the eight-core network cable comprise a power line, a communication line and a clock synchronization line.
The main module is an M4 core processor and a clock chip, and the processor rapidly collects A, B, C three-phase voltage and records a collection time mark.
The master module reads the current information with the time scale of each slave module through 485 communication and performs FFT calculation by combining the voltage information with the time scale acquired by the master module to obtain parameters such as power, power factor and the like of each outlet.
The main module sends the parameter information of each outlet to the display module through 485 communication.
The display module adopts a capacitive touch screen, and adopts a modbus communication protocol to communicate with the main module through a standard network cable, wherein the protocol contains physical parameters such as voltage, current, power and the like of each outlet.
The slave module is powered by a power supply in the network cable and simultaneously receives the pulse of the clock synchronization signal line to perform clock synchronization.
The slave module rapidly collects A, B, C three-phase current of the circuit breaker, records time marks of collection time, then sends current information to the master module through a serial port 485 communication protocol, and the master module calculates power of each outlet.
Advantageous effects
The electric power energy terminal equipment based on the distributed acquisition architecture manufactured by the technical scheme of the invention has the following advantages:
1. the main module is used for sampling common parameters such as voltage, and the voltage digital information is transmitted between the main module and the slave module through communication, so that repeated wiring and repeated collection are replaced;
2. the slave module of the technical scheme is used for sampling branch parameters such as current, the slave module is installed nearby in a guide rail type, wiring is convenient, and meanwhile the length of a wire rod is greatly reduced;
3. according to the centralized display liquid crystal module in the technical scheme, operation and maintenance personnel can conveniently check the electrical parameters of each switch outlet through the display liquid crystal module;
4. according to the technical scheme, the display module, the main module and the slave module are connected through the standard industrial network cable, so that the connection reliability and efficiency are improved, and meanwhile, the wiring error is prevented.
Drawings
FIG. 1 is a schematic view of the structure of the fabric inside the control cabinet of the present invention;
fig. 2 is a schematic view of a connection structure of a master module, a slave module and a circuit breaker according to the present invention;
FIG. 3 is a schematic diagram of the structure of the control cabinet of the present invention;
FIG. 4 is an eight-core definition diagram of the eight-core network cable of the present invention;
in the figure, 1, a control cabinet; 2. a circuit breaker; 3. a main module; 4. a display module; 5. and a slave module.
Detailed Description
The invention is described in detail below with reference to the drawings, as shown in FIGS. 1-4;
the main module is fixedly arranged in the control cabinet and is connected with three power supplies, and the main built-in power supply system of the main module converts alternating current of two hundred and twenty volts into direct current of five volts;
the display module 4 is fixedly arranged on a cabinet door of the control cabinet, the display screen displays electric parameters of outlets of the circuit breakers through page turning of touch buttons on the screen, the display module is connected to the main module through a network cable, and the main module supplies power to the display module through the network cable and performs data interaction with the display module;
still include from module 5, from module fixed mounting in the switch board, the quantity of module is the same and the one-to-one with the quantity of circuit breaker, and the module is close to rather than the circuit breaker that corresponds and is connected with the circuit breaker that corresponds through ABC three-phase current sampling line from the module.
The electronic devices adopted by the technical scheme all adopt the existing products, the technical scheme of the application has no special requirements and changes on the structures of the electronic devices, and the electronic devices all belong to conventional electronic equipment;
in the implementation process of the technical scheme, a person in the art needs to connect all the electrical components in the present application with a power supply adapted to the electrical components through a wire, and should select an appropriate controller according to actual conditions to meet control requirements, and specific connection and control sequence.
The invention further provides that the network cable is an eight-core network cable, and the eight cores of the eight-core network cable comprise a power line, a communication line and a clock synchronization line; the main module is an M4 core processor and a clock chip, and the processor rapidly acquires A, B, C three-phase voltage and records acquisition time marks; the master module reads current information with time scales of each slave module through 485 communication and performs FFT calculation by combining voltage information with the time scales acquired by the master module to obtain parameters such as power, power factor and the like of each outlet; the main module sends the parameter information of each outlet to the display module through 485 communication; the display module adopts a capacitive touch screen and a modbus communication protocol to communicate with the main module through a standard network cable, wherein the protocol contains physical parameters such as voltage, current and power of each outlet; the slave module supplies power through a power supply in the network cable and receives pulses of a clock synchronization signal line to perform clock synchronization; the slave module rapidly collects A, B, C three-phase current of the circuit breaker, records time marks of collection time, then sends current information to the master module through a serial port 485 communication protocol, and the master module calculates power of each outlet.
The terminal equipment disclosed by the application comprises a display module, a main module, a slave module, a network cable, a power supply and the like. And data interaction is carried out among the modules through a network cable. The display module is connected to the main module through a network cable, the main module is connected to the slave modules through the network cable, and the slave modules are connected through the network cable. The display module is arranged on a front door plate of the control cabinet, and power and data are provided by the main module through a network cable. The main module is installed in the switch cabinet close to a voltage sampling point. The three-phase power ABCN four wires are connected into the main module through the wiring terminals. The built-in power supply system of the main module converts alternating current 220V into direct current 5V power supply and supplies power to each module through a network cable. The built-in voltage AD sampling unit of the main module converts the analog voltage of the ABCN sampling line into a digital signal and transmits the digital signal to each module through a network cable. The slave module is arranged in the switch cabinet and close to the outlet of the switch breaker, and an ABC three-phase current sampling line is connected into the slave module to realize current collection. The 8 cores of the network cable contain power lines, communication lines and clock synchronization lines, so that power supply, communication and clock synchronization of all the modules are guaranteed.
According to the technical scheme, in the implementation process, the display module adopts a capacitive touch screen design, and the electric parameters of each outlet are displayed by page turning of touch buttons on the screen. The display module adopts 5V power supply and 485 communication. And a modbus communication protocol is adopted to communicate with the main module through a standard network cable. The protocol contains physical parameters such as voltage, current and power of each outlet. The main module adopts an M4 core processor and a clock chip, and a built-in power supply module converts alternating current 220V into direct current 5V to supply power to the whole system. The processor rapidly acquires A, B, C the three-phase voltage and records the acquisition time scale. The clock line in the network line is normally low level, a 20ms pulse is output every 1S, and all the slave modules perform clock synchronization by taking the clock line as a signal. And reading the current information with the time scale of each slave module through 485 communication and carrying out FFT calculation by combining the voltage information with the time scale acquired by the slave module to obtain parameters such as power, power factor and the like of each outlet. And the parameter information of each outlet is uploaded to the display module through 485 communication. The slave module gets power through a power supply in the network cable, and simultaneously receives pulses of the clock synchronization signal line to perform clock synchronization. The slave module rapidly collects A, B, C the three-phase current and records the time scale of the collection time. The current information is sent to the main module through a serial port 485 communication protocol, and the main module calculates the electric parameters such as power of each outlet.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims (8)

1. An electric power energy source terminal device based on a distributed acquisition architecture is characterized by comprising the following parts:
the control cabinet (1) is internally provided with three power supplies and a plurality of circuit breakers (2);
the main module (3) is fixedly arranged in the control cabinet and is connected with the three power supplies, and the main module converts alternating current of two hundred and twenty-ten volts into direct current of five volts by a main built-in power supply system;
the display module (4) is fixedly arranged on a cabinet door of the control cabinet, a display screen displays electric parameters of outlets of the circuit breakers through page turning of touch buttons on the screen, the display module is connected to the main module through a network cable, and the main module supplies power to the display module through the network cable and performs data interaction with the display module;
the slave modules (5) are fixedly installed in the control cabinet, the number of the slave modules is the same as that of the circuit breakers, the slave modules correspond to the circuit breakers one by one, and the slave modules are close to the circuit breakers corresponding to the slave modules and are connected with the corresponding circuit breakers through ABC three-phase current sampling lines.
2. The electric power energy terminal device based on the distributed acquisition architecture of claim 1, wherein the network cable is an eight-core network cable, and eight cores of the eight-core network cable comprise a power line, a communication line and a clock synchronization line.
3. The electric energy terminal device based on the distributed acquisition architecture as claimed in claim 1, wherein the main module is an M4 core processor and a clock chip, and the processor rapidly acquires A, B, C three-phase voltage and records acquisition time scale.
4. The electric power energy terminal device based on the distributed acquisition architecture as claimed in claim 3, wherein the master module reads current information with time scales of each slave module through 485 communication and performs FFT calculation by combining voltage information with time scales acquired by the master module to obtain parameters such as power and power factor of each outlet.
5. The electric energy terminal device based on the distributed acquisition architecture as claimed in claim 1, wherein the main module sends the parameter information of each outlet to the display module through 485 communication.
6. The electric power energy terminal device based on the distributed acquisition architecture of claim 1, wherein the display module adopts a capacitive touch screen, and the display module adopts a modbus communication protocol to communicate with the main module through a standard network cable, and the protocol includes physical parameters such as voltage, current and power of each outlet.
7. The distributed acquisition architecture-based electric power energy terminal device according to claim 1, wherein the slave module is powered by a power supply in a network cable, and simultaneously receives pulses of a clock synchronization signal line for clock synchronization.
8. The electric power and energy terminal device based on the distributed acquisition architecture as claimed in claim 1, wherein the slave module rapidly acquires A, B, C three-phase current of the circuit breaker, records a time scale of the acquisition time, and then sends current information to the master module through a serial port 485 communication protocol, and the master module calculates the power of each outlet.
CN202011134156.0A 2020-10-21 2020-10-21 Electric power energy terminal equipment based on distributed acquisition architecture Active CN112467872B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482532A2 (en) * 1990-10-20 1992-04-29 GERT FISCHER GmbH Apparatus for the selective coupling of a plurality of modules with a processor
CN202094709U (en) * 2011-06-28 2011-12-28 北京易投嘉德投资咨询有限公司 Monitoring device for power distribution cabinet
CN203774615U (en) * 2014-02-25 2014-08-13 南旭福（北京）信息工程技术有限公司 Precision power distribution cabinet system using distributed acquisition
CN104316114A (en) * 2014-11-21 2015-01-28 国家电网公司 Intensive type touch screen intelligent power meter
CN205622322U (en) * 2016-04-27 2016-10-05 西京学院 Distribution monitor information collection system
CN107231270A (en) * 2016-03-25 2017-10-03 Ls 产电株式会社 Slave module for monitoring electrical system
CN107611793A (en) * 2017-10-13 2018-01-19 威腾电气集团股份有限公司 A kind of Intelligent lower voltage switch cabinet
CN107681787A (en) * 2017-11-14 2018-02-09 河北新大长远电力科技股份有限公司 A kind of communicating circuit based on serial ports parallel connection
CN110994803A (en) * 2019-12-23 2020-04-10 广州东方电科自动化有限公司 Join in marriage electrical information acquisition and processing system of electrical room

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482532A2 (en) * 1990-10-20 1992-04-29 GERT FISCHER GmbH Apparatus for the selective coupling of a plurality of modules with a processor
CN202094709U (en) * 2011-06-28 2011-12-28 北京易投嘉德投资咨询有限公司 Monitoring device for power distribution cabinet
CN203774615U (en) * 2014-02-25 2014-08-13 南旭福（北京）信息工程技术有限公司 Precision power distribution cabinet system using distributed acquisition
CN104316114A (en) * 2014-11-21 2015-01-28 国家电网公司 Intensive type touch screen intelligent power meter
CN107231270A (en) * 2016-03-25 2017-10-03 Ls 产电株式会社 Slave module for monitoring electrical system
CN205622322U (en) * 2016-04-27 2016-10-05 西京学院 Distribution monitor information collection system
CN107611793A (en) * 2017-10-13 2018-01-19 威腾电气集团股份有限公司 A kind of Intelligent lower voltage switch cabinet
CN107681787A (en) * 2017-11-14 2018-02-09 河北新大长远电力科技股份有限公司 A kind of communicating circuit based on serial ports parallel connection
CN110994803A (en) * 2019-12-23 2020-04-10 广州东方电科自动化有限公司 Join in marriage electrical information acquisition and processing system of electrical room

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