CN112968523A - Modularized intelligent power distribution terminal and self-healing control method thereof - Google Patents
Modularized intelligent power distribution terminal and self-healing control method thereof Download PDFInfo
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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
- H02J13/00006—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
- H02J13/00022—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 wireless data transmission
- H02J13/00026—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 wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02J13/00006—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
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- 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
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- 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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- 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
- Y04S40/126—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 wireless data transmission
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- 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
- Y04S40/128—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 involving the use of Internet protocol
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Abstract
The invention provides a modularized intelligent power distribution terminal and a self-healing control method thereof, wherein the terminal comprises a case, a guide rail assembly, a module base and a functional module unit, the guide rail assembly is arranged at the bottom in the case and used for installing the module base, the module base is arranged on the guide rail assembly and used for installing the functional module unit, the functional module unit is connected with the interior of the module base through a bus, and a power supply module, a core control module, a remote measuring module, a remote signaling module, a communication module, a positioning module and an expansion module are sequentially arranged on the module base. The method of the invention is applied to the terminal. The invention realizes modular configuration by adopting the guide rail, realizes automatic retrieval, positioning and navigation of faults and recovery of a non-fault area by a self-healing control technology and a positioning module, realizes plug and play, simple structure, safety, reliability and intelligent self-healing of the power distribution terminal, and brings great advantages for later module upgrading, Internet of things transformation and the like.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a modular intelligent power distribution terminal and a self-healing control method applying the terminal.
Background
At present, the basic completion of national power networking and the further improvement of power transmission technology bring new requirements on traditional power equipment along with the continuous development of intellectualization and networking. How to improve the safety, reliability and stability of power supply, how to reduce networking cost and improve the safety and stability of the power grid become an important subject. Therefore, the construction of an intelligent and automatic power grid becomes a main development direction of the power industry, and is a main motive force for further promoting the revolution and progress of the power industry. As an important component of the smart grid, the intellectualization, automation, safety and stability of the power distribution network which is directly contacted with a user are important. An intelligent, automatic, safe and reliable power distribution terminal plays a significant role in achieving the overall goal of smart power grid construction.
Although intelligent control can also be realized at the power distribution terminal adopted by the existing power distribution network, the structure of the power distribution terminal is designed by adopting a traditional box type structure, different application scenes and field configuration can be realized by intelligently constructing the power distribution terminal by inserting the power distribution terminal to a fixed position of a case, and the number of slots of the case limits the number of components. When the power grid fails, large-scale power failure causes great inconvenience to life and serious economic loss to production. Meanwhile, various chips in the power distribution terminal mostly adopt 5V direct current power supplies, and most of the existing solutions are provided with external direct current power supplies, so that the terminal structure is complex and accidents are easily caused.
Therefore, in order to better adapt to the development of an intelligent power grid, a novel power distribution terminal which can use the power of the power grid, is convenient to install, flexible in expansion, rapid in diagnosis and the like needs to be designed.
Disclosure of Invention
The invention mainly aims to provide a modular intelligent power distribution terminal with a self-healing control system aiming at the defects of the power distribution terminal in the existing power equipment.
The invention also aims to provide a self-healing control method of the modular intelligent power distribution terminal with the self-healing control system aiming at the defects of the power distribution terminal in the existing power equipment.
In order to achieve the main purpose, the invention provides a modular intelligent power distribution terminal, which comprises a case, a guide rail assembly, a module base and a functional module unit, wherein the guide rail assembly is installed at the bottom in the case and used for installing the module base; the functional module unit comprises a power supply module, a core control module, a remote control module, a telemetry module, a remote signaling module, a communication module, a positioning module and an extension module, wherein the power supply module, the core control module, the remote control module, the telemetry module, the remote signaling module, the communication module, the positioning module and the extension module are sequentially arranged on the module base.
In a further scheme, a plurality of threaded holes are formed in the edge of the guide rail assembly and are installed at the bottom in the case through bolts, and the guide rail assembly is of a hollow structure.
In a further scheme, a plurality of slideways are arranged below the module base and matched with the surface of the guide rail assembly, and the slideways of the module base are connected with the surface of the guide rail assembly in a mortise and tenon structure and are fixedly arranged on the guide rail assembly in a arrayed manner through bolt connection.
In a further aspect, the module base surface has a double row female socket for mounting the functional module unit, the double row female socket with the bus connection.
In a further scheme, the core control module adopts a double-CPU structure and is respectively used for realizing various communication protocols of data sampling processing and self-healing control of the power distribution terminal, and the two CPUs are connected and communicated through a high-speed serial port.
In a further scheme, the bus comprises a power line and a high-speed information transmission bus which are respectively used for supplying power and transmitting information among the functional modules, wherein the high-speed information transmission line adopts a mixed mode of CAN bus transmission and alternating current analog quantity SPI transmission.
In a further scheme, the communication module comprises an Ethernet communication module and a wireless communication module, the Ethernet communication module comprises a physical interface transceiver chip, a transformer and an RJ45 physical interface and is used for communicating with a master station, and the wireless communication module adopts a ZigBee communication technology and realizes wireless communication in a short distance through the ZigBee chip.
In a further scheme, the double-CPU structure of the core control module comprises a sampling CPU and a communication CPU, wherein the sampling CPU is used for data acquisition and real-time processing of modules in the power distribution terminal and realizing the protection function of the power distribution terminal; the communication CPU is used for analyzing and assembling various communication protocols and storing operation data.
In order to achieve another object, the present invention provides a self-healing control method for a modular intelligent power distribution terminal, where the modular intelligent power distribution terminal adopts the above modular intelligent power distribution terminal, and the method includes: initializing basic information of a power distribution terminal and communication information of adjacent switches; acquiring basic information of adjacent power distribution terminals according to the communication information of the adjacent equipment acquired in the initialization stage; calculating loads of all neighborhood feeder lines and converting the loads into current and rated current of each outlet circuit breaker; judging whether the adjacent switch is a communication switch or not; entering a fault starting stage, and performing fault positioning and isolation; and controlling the tie switch to recover the power supply of the non-fault area.
Further, the starting conditions of the fault starting phase comprise: a protection module is configured in a sampling CPU of each power distribution terminal, when an overcurrent fault occurs in a power distribution terminal or overcurrent fault information sent by an adjacent switch is received, self-healing control is started, detected fault information and switch states are actively sent to the adjacent switch, address information is generated to position and isolate the adjacent switch, and the fault information and the switch states of the adjacent switch are monitored.
Therefore, the invention has the following beneficial effects by adopting the technical scheme:
1. the track fixing base is adopted, the limitation of the traditional case clamping groove on the number of the modules is eliminated, and the number of the modules can be freely combined on the guide rail of the whole case.
2. The functional component modularization can realize the quick disassembly and assembly of each module, and the maintenance is more convenient, the use is more convenient.
3. The power supply module directly uses the power of a power grid as terminal power supply current by using rectification and voltage division technologies without an external power supply.
4. The communication module adopts an Ethernet and a wireless communication system which have the intelligent operation of remote transmission and close range control.
5. The application of the positioning module and the self-healing technology can realize monitoring, positioning and navigation of the faults of the power distribution terminal in the power distribution network, control the influence of the faults in a local range, and effectively resist the influence of natural disasters or equipment faults on the power distribution network.
Drawings
Fig. 1 is a schematic structural diagram of a rail assembly in an embodiment of a modular intelligent power distribution terminal of the present invention.
Fig. 2 is a schematic structural diagram of a module base in an embodiment of a modular intelligent power distribution terminal according to the present invention.
Fig. 3 is a schematic diagram of an embodiment of a modular intelligent power distribution terminal of the present invention.
Fig. 4 is a schematic diagram of a functional configuration flow of a sampling procedure in an embodiment of a modular intelligent power distribution terminal according to the present invention.
Fig. 5 is a schematic diagram of a communication structure of an embodiment of a modular intelligent power distribution terminal according to the present invention.
Fig. 6 is a flowchart of a self-healing control method of a modular intelligent power distribution terminal according to an embodiment of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Referring to fig. 1 to 3, the modular intelligent power distribution terminal of the present invention includes a chassis, a rail assembly, a module base and a functional module unit, wherein the chassis plays a role in protection, the rail assembly is installed at the bottom of the chassis for installing the module base, the module base is installed on the rail assembly for installing the functional module unit, and the functional module unit is connected with the inside of the module base through a bus.
In this embodiment, the functional module unit includes a power module, a core control module, a remote control module, a telemetry module, a remote signaling module, a communication module, a positioning module, and an extension module, and the power module, the core control module, the remote signaling module, the communication module, the positioning module, and the extension module are sequentially mounted on the module base.
The edge of guide rail set spare is equipped with a plurality of screw holes to install in quick-witted incasement bottom through bolted connection, wherein, guide rail set spare sets up to hollow structure for the wiring, its surface and module base similar mortise and tenon structure, its surface are equipped with the screw hole, through the bolt fastening, can lay wantonly at quick-witted incasement, and two guide rails are installed to this embodiment in quick-witted incasement bottom, have broken the drawback that traditional card formula module is subject to buckle quantity. Of course, the number of rails may be selected according to the user's needs.
The module base is provided with a plurality of module bases, the module bases are arranged on the guide rail assembly in a row, the module bases are arranged on the guide rail assembly in a sliding mode, and the module bases are arranged on the guide rail assembly in a sliding mode.
The surface of the module base is provided with double rows of female seats used for installing the functional module units, and the double rows of female seats are connected with the bus. Preferably, the double-row female socket of the embodiment can be a 2 x 8p type socket of WXRKDZ for installing the module, and the socket is connected with the bus. The module bases are unified, and each module base is only provided with one functional module.
Therefore, the slideway matched with the guide rail assembly is prefabricated below the module base, the module base is hollow, the threaded hole matched with the guide rail is prefabricated in the middle of the module base, the module base is fixed with the guide rail through bolts and is arranged on the guide rail, the surface of the module base is provided with a common row seat for installing the module, and the row seat is connected with the bus. The module bases are unified, and each module base is only provided with one functional module.
In this embodiment, the core control module adopts a dual-CPU structure, and is respectively used for realizing various communication protocols of data sampling processing and self-healing control of the power distribution terminal, and the two CPUs are connected and communicated through a high-speed serial port. Therefore, the core control module adopts a double-CPU design to realize various communication protocols of data sampling processing and self-healing control of the power distribution terminal.
Furthermore, the core control module is mainly responsible for coordination control, information safety, data acquisition and summarization, data analysis and processing and remote transmission of all modules, and simultaneously receives various local control operations of the remote control center. The design of double CPUs is adopted, various communication protocols of data sampling processing and self-healing control of the power distribution terminal are respectively realized, and the two CPUs are connected and communicated through a high-speed serial port. In addition, the core control module is also provided with a plurality of interfaces to realize the access of the external equipment.
In this embodiment, the dual-CPU structure of the core control module includes a sampling CPU and a communication CPU, where the sampling CPU is used for data acquisition and real-time processing of modules in the power distribution terminal and implementing a protection function of the power distribution terminal; the communication CPU is used for analyzing and assembling various communication protocols and storing operation data.
Preferably, the present embodiment uses STM32F746BE model from Texas Instruments (TI) as a processor of a core control module, a TMS320C6713 chip as a sampling CPU, a NAND flash from MICRON as a storage device, a DP83640 from american national semiconductor as a communication CPU, and an SN65HVD230 as a CAN transceiver. Besides, the core control module is also provided with 4 paths of RS232/485 multiplexing interfaces to realize the access of external equipment.
In this embodiment, the bus includes a power line and a high-speed information transmission bus, which are respectively used for supplying power and transmitting information between the functional modules, wherein the high-speed information transmission line adopts a mixed mode of CAN bus transmission and AC analog quantity SPI transmission.
In this embodiment, the communication module includes ethernet communication module and wireless communication module, and ethernet communication module includes physical interface transceiver chip, transformer and RJ45 physical interface for communicate with the main website, and wireless communication module adopts zigBee communication technology, realizes the wireless communication in the short distance through the zigBee chip.
The STM32F746BE processor selected in this embodiment is provided with an ethernet controller, so the ethernet communication module only needs a physical interface transceiver chip, a transformer, and an RJ45 physical interface. Preferably, the physical interface transceiver chip is a LAN8742A-CZ-TR chip, which can support all protocol contents of ethernet, and in order to save space, a differential wiring manner is adopted between the physical interface transceiver chip and the transformer, and an RJ45 device for selecting an internal integrated transformer is adopted.
The wireless communication module of the embodiment adopts a ZigBee communication technology, takes E18-MS1-IPX as a main module, and has a communication distance of more than 100 meters and an air speed of 250 kbps. Wireless communication within a short distance can be achieved.
Furthermore, the power distribution terminal is provided with an accurate positioning module, and Beidou/GPS dual positioning can be realized so as to facilitate positioning and navigation during fault handling. Preferably, the positioning module selects an ATGM336H all-satellite positioning navigation module, and can realize Beidou/GPS dual positioning so as to position and navigate when processing faults.
Further, the power module comprises a rectifier bridge, a capacitor, a resistor, a step-down switching regulator, a relay, a triode and the like, and is used for directly converting commercial power or industrial power into power supply voltage for other modules and control voltage for communication quantity. Specifically, the input current adopts 220V of commercial power or 380V of industrial power, and the alternating current is converted into direct current through a rectifier bridge. The direct current circuit obtains PI and PO signals in a mode of resistor voltage division and triode conversion, and the signals are switched into a controller for communication processing through the conversion of a chip; and the other path is stabilized through a capacitor and passes through a step-down switching regulator to obtain currents with different voltages to supply power to each module. In addition, relays may be used to activate an external virtual power source.
For example, after obtaining PI and PO signals, the signals are converted into TTL signals by the PB331 chip, and then are accessed to the core control module for communication processing; and the other path is stable through a capacitor, and the TPS5410D step-down switching regulator chip is used for converting the voltage into DC 5V and DC 24V to respectively supply power to the chips in the modules and the optical couplers in the remote signaling module. Meanwhile, two relays are arranged in the power supply module to realize the activation function of the external virtual power supply.
Furthermore, the telemetry module mainly realizes acquisition of analog quantity of an operating line, is provided with a Current Transformer (CT), a voltage transformer (PT) and an AD conversion chip, finishes voltage and current measurement through the CT and the PT and transmits a level signal to the core control module through the AD conversion chip. The monitoring of the ground external storage battery can be realized by collecting the direct current voltage and the direct current. Therefore, the telemetry module mainly collects alternating current signals in an operating line, voltage transformation conversion is carried out on alternating current analog quantity by adopting a TV3154 voltage transformer (PT) and a TA5222 Current Transformer (CT), and level signals are transmitted to the core control module by adopting AD7606 as an AD conversion chip.
Furthermore, the remote signaling module mainly realizes the acquisition of switching value signals of the operating line. Because the voltage in the power distribution network is higher, an optical coupler needs to be installed to isolate electricity and collect switching value, and the collected signal jumper method selects a digital value signal input level. The voltage of the voltage in the power distribution network, which needs to be acquired, is generally 100V, 220V or even higher, so that an isolation device needs to be adopted to protect the acquisition pins, a TLP620 type optocoupler is installed to isolate electricity and acquire direct current and alternating current switching values, and the acquired signal jumper method selects a digital value signal input level.
Furthermore, the remote control module mainly realizes the remote control function of the power distribution terminal and is provided with a photoelectric coupler, a triode and a relay. The level signal output by the core control module is amplified to obtain higher voltage to drive switches of various devices, so that the remote control function is realized. And the remote control module is provided with a misoperation prevention measure, and the power supply of the relay can be turned on only when remote control operation is executed. The level signal output by the core control module reaches 12V voltage through amplification and isolation of the photoelectric coupler, and the photoelectric coupler is used for driving the triode and further driving the relay to output 12V switching voltage. The 12V voltage output by the relay can drive substantially all devices in the power distribution terminal.
Furthermore, the power distribution terminal can be selectively provided with an electric energy meter and connected with the RS-485 interface in the core module, so that real-time observation or charging is realized.
Further, the installation position of the expansion module is reserved so as to perform function expansion.
Further, as shown in fig. 4, the sampling CPU of the core control module is responsible for acquiring and processing data of other modules of the power distribution terminal in real time and implementing a protection function of the power distribution terminal. Before working, the configuration of 'three remote' parameters such as a remote control module, a remote measuring module, a remote signaling module and the like, channel types, line parameters, protection fixed values and the like needs to be completed. The three-remote parameters comprise the quantity of the collected analog quantity, the quantity of the line remote control channels and the like and the delay time of remote control brake opening and closing; the channel type specifically refers to the configuration of three attributes of voltage, current and direct current of the analog quantity according to the module and the acquisition sequence; the line parameters refer to the custom arrangement of the analog quantities; the protection constant value is the configuration and realization of various protection functions, and the protection functions are completed by comparing a preset critical value with a real-time acquisition value.
Further, as shown in fig. 5, the communication CPU interface of the core control module is responsible for parsing and assembling various communication protocols, storing operation data, and implementing advanced applications. The self-healing control technology of the invention is realized by a communication CPU. The communication CPU obtains sampling data in real time through a serial port, completes processing, sorting, filing and storing of the data, and completes self-healing control according to the processed data by utilizing a preset algorithm.
The invention provides a self-healing control method of a modular intelligent power distribution terminal to realize the self-healing control technology, in particular to the self-healing control method of the modular intelligent power distribution terminal, which is applied to the modular intelligent power distribution terminal, and referring to fig. 6, the self-healing control method comprises the following steps:
step S1, initialization stage: the basic information (voltage, current, switch state, three remote signals, etc.) of the power distribution terminal and the communication information (IP address, MAC address, port number) of the adjacent switch are initialized.
Specifically, in an initialization stage, communication information of adjacent equipment is obtained through GOOSE-61850 communication, an SCD model file is configured to set up a GOOSE subscription relationship between power distribution terminals, a connectionless mode of messages with priority labels can bypass a TCP layer and an IP layer of an Ethernet and directly receive and transmit data through a data link layer and a physical layer, and when a network switch receives the messages with the priority labels, the messages are preferentially transmitted to shorten the transmission delay. The connectionless mode can save the trouble of back and forth confirmation to improve the sending efficiency, and all subscribers who put a frame of message on the network can receive the message.
Step S2, reading the adjacent device information: and acquiring basic information of adjacent power distribution terminals, such as voltage, current, switch state, three remote signals and the like, according to the communication information of the adjacent equipment acquired in the initialization stage.
Specifically, basic information of adjacent power distribution terminals is acquired through GOOSE-61850 communication, a stable time interval T0 (usually set to 5s) is used for continuous cyclic data set sending, and when a line fails, the positions of all switches on the line are exchanged through peer-to-peer communication between the adjacent power distribution terminals, and fault information is protected.
Step S3, calculating neighborhood feeder load: and calculating the loads of all neighborhood feeder lines, converting the loads into the current magnitude, the rated current of each outlet breaker and the like, and obtaining the load current sum of the feeder line cabinet of the power distribution room and the capacity magnitude of the interconnection switch breaker.
And step S4, judging whether the adjacent switch is a connection switch or not, and automatically starting judgment at the stage when the initialization and self-healing control is finished.
Wherein, this embodiment is through comparing distribution room feeder cabinet load current sum and interconnection switch circuit breaker capacity size, judges it to be interconnection switch to adjacent switch.
The embodiment judges whether the device is an interconnection switch or not through the device switch attribute, starts the power supply self-healing logic if the device is the interconnection switch, and compares the total load current of the feeder cabinet of the power distribution room with the capacity of the circuit breaker of the interconnection switch to determine whether the device is switched on or not.
Step S5, failure start stage: entering a fault starting stage.
Step S6, fault location and isolation: and carrying out fault positioning and isolation on the power distribution terminal with the fault.
Step S7, power restoration in the non-failure area: and controlling the tie switch to recover the power supply of the non-fault area.
In this embodiment, when the tie switch is controlled to recover the power supply of the non-fault area, the method specifically includes:
and (3) node failure: if the phase current and the zero sequence current flowing through the node are larger than the setting fixed value, the node is judged to be in fault, and a node fault GOOSE output signal is triggered instantaneously.
Fault removal: and if one of the nodes at the M side and the N side and only one of the nodes at one side does not send a 'node fault' GOOSE signal, the node switch is tripped by action after the fault trip time limit is set.
Fault isolation: and if the node does not detect the fault and receives a 'node fault' GOOSE signal of which the M side or the N side has only one node, the node switch is tripped after the fault trip time limit is set.
And (3) recovering power supply in the non-failure area: and after the interconnection switch receives the successful fault removal and the successful fault isolation, if the total load current of the non-fault area is less than the capacity of the interconnection cabinet breaker, the delayed switch-on restores the power supply of the non-fault area.
Further, the starting conditions of the fault starting phase include: a protection module is configured in a sampling CPU of each power distribution terminal, when an overcurrent fault occurs in a power distribution terminal or overcurrent fault information sent by an adjacent switch is received, self-healing control is started, detected fault information and switch states are actively sent to the adjacent switch, address information is generated to position and isolate the adjacent switch, and the fault information and the switch states of the adjacent switch are monitored.
Therefore, the invention innovatively adopts the guide rail to realize modular configuration, and the power module directly uses the power of the power grid as the terminal power supply current by using rectification and voltage division technologies. The intelligent operation of both long-distance transmission and short-distance control is realized by adopting an Ethernet and a wireless communication system. The automatic retrieval, positioning and navigation of the fault and the recovery of the non-fault area are realized through the self-healing control technology and the positioning module. The modularized self-healing power distribution terminal has the advantages that the modularization of the power distribution terminal and the application of the self-healing technology are benefited, the plug and play, the simple structure, the safety and the reliability are realized, the intelligent self-healing of the power distribution terminal is realized, and the huge advantages are brought to the aspects of module upgrading, Internet of things transformation and the like in the later period.
Therefore, the invention has the following beneficial effects by adopting the technical scheme:
1. the track fixing base is adopted, the limitation of the traditional case clamping groove on the number of the modules is eliminated, and the number of the modules can be freely combined on the guide rail of the whole case.
2. The functional component modularization can realize the quick disassembly and assembly of each module, and the maintenance is more convenient, the use is more convenient.
3. The power supply module directly uses the power of a power grid as terminal power supply current by using rectification and voltage division technologies without an external power supply.
4. The communication module adopts an Ethernet and a wireless communication system which have the intelligent operation of remote transmission and close range control.
5. The application of the positioning module and the self-healing technology can realize monitoring, positioning and navigation of the faults of the power distribution terminal in the power distribution network, control the influence of the faults in a local range, and effectively resist the influence of natural disasters or equipment faults on the power distribution network.
It should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. Although the invention has been described herein with reference to a number of illustrative examples thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, other uses will be apparent to those skilled in the art in view of variations and modifications in the subject matter incorporating the components and/or arrangement of the arrangement within the scope of the disclosure, drawings and claims hereof.
Claims (10)
1. A modular intelligent power distribution terminal, comprising:
the module comprises a case, a guide rail assembly, a module base and a functional module unit, wherein the guide rail assembly is arranged at the bottom in the case and used for installing the module base;
the functional module unit comprises a power supply module, a core control module, a remote control module, a telemetry module, a remote signaling module, a communication module, a positioning module and an extension module, wherein the power supply module, the core control module, the remote control module, the telemetry module, the remote signaling module, the communication module, the positioning module and the extension module are sequentially arranged on the module base.
2. The modular intelligent power distribution terminal of claim 1, wherein:
the edge of the guide rail assembly is provided with a plurality of threaded holes and is connected and installed at the bottom in the case through bolts, wherein the guide rail assembly is of a hollow structure.
3. The modular intelligent power distribution terminal of claim 2, wherein:
the module base below be equipped with the slide that the guide rail set spare surface cooperation set up, it is a plurality of the module base the slide with the guide rail set spare surface adopts mortise and tenon structural connection, through bolted connection with the guide rail set spare is fixed and is arranged and install on the guide rail set spare.
4. The modular intelligent power distribution terminal of claim 1, wherein:
the module base surface has double female seats for installing the functional module unit, double female seats with bus connection.
5. The modular intelligent power distribution terminal of any of claims 1 to 4, wherein:
the core control module adopts a double-CPU structure and is respectively used for realizing various communication protocols of data sampling processing and self-healing control of the power distribution terminal, and the two CPUs are connected and communicated through a high-speed serial port.
6. The modular intelligent power distribution terminal of any of claims 1 to 4, wherein:
the bus comprises a power line and a high-speed information transmission bus which are respectively used for supplying power and transmitting information among the functional modules, wherein the high-speed information transmission line adopts a mixed mode of CAN bus transmission and alternating current analog quantity SPI transmission.
7. The modular intelligent power distribution terminal of any of claims 1 to 4, wherein:
the communication module includes ethernet communication module and wireless communication module, ethernet communication module includes physical interface transceiver chip, transformer and RJ45 physical interface for communicate with the main website, wireless communication module adopts zigBee communication technology, realizes the wireless communication in the short distance through the zigBee chip.
8. The modular intelligent power distribution terminal of claim 5, wherein:
the double-CPU structure of the core control module comprises a sampling CPU and a communication CPU, wherein the sampling CPU is used for data acquisition and real-time processing of modules in the power distribution terminal and realizing the protection function of the power distribution terminal;
the communication CPU is used for analyzing and assembling various communication protocols and storing operation data.
9. A self-healing control method for a modular intelligent power distribution terminal, wherein the modular intelligent power distribution terminal adopts the modular intelligent power distribution terminal as claimed in any one of claims 1 to 8, the method comprising:
initializing basic information of a power distribution terminal and communication information of adjacent switches;
acquiring basic information of adjacent power distribution terminals according to the communication information of the adjacent equipment acquired in the initialization stage;
calculating loads of all neighborhood feeder lines and converting the loads into current and rated current of each outlet circuit breaker;
judging whether the adjacent switch is a communication switch or not;
entering a fault starting stage, and performing fault positioning and isolation;
and controlling the tie switch to recover the power supply of the non-fault area.
10. The method of claim 9, wherein:
the starting conditions of the fault starting phase comprise: a protection module is configured in a sampling CPU of each power distribution terminal, when an overcurrent fault occurs in a power distribution terminal or overcurrent fault information sent by an adjacent switch is received, self-healing control is started, detected fault information and switch states are actively sent to the adjacent switch, address information is generated to position and isolate the adjacent switch, and the fault information and the switch states of the adjacent switch are monitored.
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| CN202110201698.3A CN112968523A (en) | 2021-02-23 | 2021-02-23 | Modularized intelligent power distribution terminal and self-healing control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326533A (en) * | 2022-01-05 | 2022-04-12 | 南方电网电力科技股份有限公司 | Plug-and-play device of power distribution terminal |
| CN114389360A (en) * | 2021-12-24 | 2022-04-22 | 江苏米格电气集团股份有限公司 | Power distribution automation terminal based on modular configuration design |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205049626U (en) * | 2015-10-27 | 2016-02-24 | 上海燕赵电子科技有限公司 | Guide tracked single -phase electric energy meter |
| CN205157599U (en) * | 2015-10-27 | 2016-04-13 | 上海燕赵电子科技有限公司 | Guide tracked three -phase electric energy meter |
| CN106405294A (en) * | 2016-10-09 | 2017-02-15 | 珠海许继电气有限公司 | Portable power distribution product transmission calibrator and inspection method implemented thereby |
| US20170311057A1 (en) * | 2016-04-22 | 2017-10-26 | Morsettitalia S.P.A. | Modular Switchboard Terminal Block with Means for Transmission of Optical Data Signals |
| CN110837015A (en) * | 2019-11-18 | 2020-02-25 | 国网福建省电力有限公司 | Portable remote measurement test device for field operation and maintenance and working method thereof |
| CN210806848U (en) * | 2019-09-18 | 2020-06-19 | 杭州华立电力***工程有限公司 | Modularized intelligent measurement and control terminal suitable for field application of power distribution network |
-
2021
- 2021-02-23 CN CN202110201698.3A patent/CN112968523A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205049626U (en) * | 2015-10-27 | 2016-02-24 | 上海燕赵电子科技有限公司 | Guide tracked single -phase electric energy meter |
| CN205157599U (en) * | 2015-10-27 | 2016-04-13 | 上海燕赵电子科技有限公司 | Guide tracked three -phase electric energy meter |
| US20170311057A1 (en) * | 2016-04-22 | 2017-10-26 | Morsettitalia S.P.A. | Modular Switchboard Terminal Block with Means for Transmission of Optical Data Signals |
| CN106405294A (en) * | 2016-10-09 | 2017-02-15 | 珠海许继电气有限公司 | Portable power distribution product transmission calibrator and inspection method implemented thereby |
| CN210806848U (en) * | 2019-09-18 | 2020-06-19 | 杭州华立电力***工程有限公司 | Modularized intelligent measurement and control terminal suitable for field application of power distribution network |
| CN110837015A (en) * | 2019-11-18 | 2020-02-25 | 国网福建省电力有限公司 | Portable remote measurement test device for field operation and maintenance and working method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114389360A (en) * | 2021-12-24 | 2022-04-22 | 江苏米格电气集团股份有限公司 | Power distribution automation terminal based on modular configuration design |
| CN114326533A (en) * | 2022-01-05 | 2022-04-12 | 南方电网电力科技股份有限公司 | Plug-and-play device of power distribution terminal |
| CN114326533B (en) * | 2022-01-05 | 2024-06-14 | 南方电网电力科技股份有限公司 | Plug-and-play device of power distribution terminal |
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