CN113162972A - Communication system establishing method, system and device applied to new energy stability control system - Google Patents
Communication system establishing method, system and device applied to new energy stability control system Download PDFInfo
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- H—ELECTRICITY
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- 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
- 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
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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
- H02J13/00019—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 optical means
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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
- H02J13/00028—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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
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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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Abstract
The invention discloses a communication system establishing method, a system and a device applied to a new energy stability control system, wherein the method comprises the following steps: establishing a frame part of a communication framework, and identifying unique addresses and identification information of a master station host, a slave machine, a substation, device board cards and Ethernet ports; formulating a communication protocol of the stability control system for the master station host to carry out data communication; and manufacturing communication related elements for communication initialization, real-time data reading, data frame continuity, accuracy and error rate judgment. The system comprises: a framework module, a protocol module, and an element module. The apparatus comprises a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a communication system set-up method as described above for a new energy stability control system. The method can ensure that data and commands are exchanged once in the whole network within 1.667ms, realize inter-station local data acquisition of the power grid stability control system, and process the rapid real-time interaction of various information.
Description
Technical Field
The invention relates to the technical field of new energy communication, in particular to a communication system establishing method, system and device applied to a new energy stability control system.
Background
With the continuous increase of the grid-connected capacity of new energy such as wind power, photoelectricity and the like and the deep integration of power grid industrialization and informatization, communication protocols, equipment, systems and the like are gradually isolated and closed to be contained and opened. The large number of access terminals and the complex access environment in the new energy stability control system directly influence the normal operation of the smart power grid, at the moment, the power supply and the power grid, the power grid and users can be realized, and a communication method for supporting information flow and power flow is very important.
Communication protocols adopted by the traditional single-device communication method are 61850, 104 and 103 conventions. The 103 protocol is mainly used for communication between devices in the station, the 104 protocol is used for communication between a dispatching automation system and a plant station, and the IEC61850 protocol is mainly used for realizing MMS communication between the device and a station control layer background main station and GOOSE communication between spacer layer devices. The traditional communication method has the advantages of large interactive information amount, universality, expandability and strong modularity, but is difficult to adapt to the higher requirements of a new energy stable control system on communication in the aspects of interoperability, accuracy, high speed and the like.
The new energy stability control system is composed of a stability control main station, a plurality of substations and a plurality of cluster stations, and each cluster station comprises a different number of new energy power generation sets. In the operation process, the system needs to complete the monitoring of the operation state and the fault information of the equipment, issue a control command, and perform the work of control, information acquisition and the like. The above content determines that information interaction among all parts of the new energy stability control system has high requirements and standards on communication stability, high efficiency, real-time performance, economy, friendliness and large flow.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method, a system, and a device for establishing a communication system applied to a new energy stability control system, which can ensure that data and commands are exchanged once in the whole network within 1.667ms, so as to achieve fast real-time interaction of various information, such as local data acquisition between power grid stability control systems, element operation state, fault type, trip command, policy selection, control policy execution, and power grid operation mode identification.
In a first aspect, an embodiment of the present invention provides a communication system establishment method applied to a new energy stability control system, where the method includes:
and establishing a frame part of a communication framework, and identifying unique addresses and identification information of the master station host, the slave machines, the substation, each device board card and the Ethernet port.
And formulating a communication protocol of the stability control system for the master station host to carry out data communication.
And manufacturing communication related elements for communication initialization, real-time data reading, data frame continuity, accuracy and error rate judgment.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the framework part for establishing a communication framework includes:
a five-level model is established, which comprises a device, a board card, an Ethernet, a port (FT3 or 2M) and a virtual port, and is obtained through global variables in visual device design software (VLD) and used for addressing and statistical information.
And establishing a first-level cache, establishing and maintaining by an application, using the first-level cache for the cyclic use of a cache region, and acquiring the latest message through a real-time pointer.
And establishing a second-level cache, establishing the second-level cache by taking a virtual port configured by the VLD custom table as a unit, and identifying the second-level cache by the board card, the port and the virtual port.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the performing data communication by the master station host includes:
and the communication is carried out through two serial ports of the strategy board.
And using the communication extension plug-in of the first master station host to carry out the strategy board of the slave-to-slave machine for carrying out master-slave machine communication.
When the inter-station communication port of the master station host and the execution station is smaller than a first value (8)), the communication expansion plug of the second master station host is used for communicating with the sub-station.
And when the inter-station communication port of the main station host and the substation is larger than a first numerical value (8), the start board Ethernet port of the main station host is used for communication after being expanded by a large user.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the protocol includes:
and the main station host sends the acquisition information of the new energy generator set to a master station device through a 2M channel on the strategy board, receives a load shedding control command sent by the master station, and sends the load shedding command to each subarea subordinate station according to a preset distribution control principle.
The communication information protocol of the master station host and the slave machines is characterized in that the master station host communicates with a slave machine strategy board through a 10M optical fiber interface on the strategy board or the communication extension plug-in, the master station host needs to transmit frames when communicating with the slave machines, the transmission interval of messages is 0.833ms, the transmission dispersion is smaller than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the message data CRC errors are identified by the FPGA, and statistical data are provided for an application layer.
The communication protocol of the master station host and the substation device adopts HDLC protocol, uses CRC-CCITT 16 bit check (channel error code can be prevented), and the remote command confirmation can be carried out and executed only when the same effective command message is received for at least three times.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the manufacturing a communication-related component includes planning the communication component as follows:
and the frame part realizes the functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing.
And the protocol part is used for manufacturing a receiving and sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet (2M), an internal Ethernet (FT3) and an external Ethernet (2M).
And the application part is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
In a second aspect, an embodiment of the present invention further provides a communication system applied to a new energy stability control system, where the communication system includes:
and the frame module is used for establishing a frame part of a communication framework and identifying the unique address and the identification information of the master station host, the slave machines, the substations, the device board cards and the Ethernet ports.
And the protocol module is used for formulating a communication protocol of the stability control system, and the master station host machine carries out data communication.
And the component module is used for manufacturing communication related components and realizing communication initialization, data real-time reading, data frame continuity, accuracy and error rate judgment.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the framework module includes a five-level model and a two-level cache.
The five-level model includes devices, boards, ethernet, ports (FT3 or 2M) and virtual ports, obtained through global variables in the visualization device design software (VLD) for addressing and statistical information.
The first-level cache is established and maintained by the application and used for the cyclic use of the cache region, and the latest message is obtained through the real-time pointer.
And the second-level cache is created by taking a virtual port configured by the VLD custom table as a unit, and is identified by the board card, the port and the virtual port.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the protocol module includes:
and the master station host transmits the acquisition information of the new energy generator set to the master station device through a 2M channel on the strategy board, receives a load shedding control command transmitted by the master station, and transmits the load shedding command to each subordinated station of the subareas according to a preset distribution control principle.
And the slave communication unit is used for a communication information protocol between the master station host and the slave, the master station host communicates with the slave strategy board through a 10M optical fiber interface on the strategy board or the communication extension plug-in, the master station host needs to transmit in frames when communicating with the slave, the transmission interval of the message is 0.833ms, the transmission dispersion is less than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the CRC error of the message data is identified by the FPGA, and the statistical data is provided for an application layer.
And the substation communication unit is used for a communication protocol between the main station host and the substation, the communication messages of the main station host and the substation realize one-time data and command exchange within 1.667ms, the communication protocol adopts an HDLC protocol, CRC-CCITT 16-bit check (channel error code can be prevented), and the command confirmation requires that the remote command confirmation can be carried out and executed only by continuously receiving the same effective command message for at least three times.
In combination with the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, where the component module includes:
and the frame unit is used for realizing functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing.
And the protocol unit is used for manufacturing a receiving and sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet (2M), an internal Ethernet (FT3) and an external Ethernet (2M).
And the application unit is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the communication system establishment method applied to the new energy stability control system as described above.
The embodiment of the invention has the beneficial effects that:
the invention provides a communication method of a new energy stable control system, which is extremely simple, reliable and economic as far as possible, has definite communication function distribution of all plug-ins, is reasonable in design, safe and practical, can ensure that data and commands are exchanged once in the whole network within 1.667ms, and realizes the quick real-time interaction of various information such as local data acquisition between stations of the power grid stable control system, element operation state, fault type, trip command, strategy selection, control strategy execution, power grid operation mode identification and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flow chart of a communication system establishing method applied to a new energy stability control system according to the invention;
fig. 2 is a schematic diagram of a frame structure of a communication system applied to the new energy stability control system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 2, a first embodiment of the present invention provides a communication system establishing method applied to a new energy stability control system, including:
and establishing a frame part of a communication framework, and identifying unique addresses and identification information of the master station host, the slave machines, the substation, each device board card and the Ethernet port.
And formulating a communication protocol of the stability control system for the master station host to carry out data communication.
And manufacturing communication related elements for communication initialization, real-time data reading, data frame continuity, accuracy and error rate judgment.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the framework part for establishing a communication framework includes:
a five-level model is established, comprising devices, boards, Ethernet, ports (FT3 or 2M) and virtual ports, and is obtained through global variables in visual device design software (VLD) for addressing and statistical information.
And establishing a first-level cache, establishing and maintaining by an application, using the first-level cache for the cyclic use of a cache region, and acquiring the latest message through a real-time pointer.
And establishing a second-level cache, establishing the second-level cache by taking a virtual port configured by the VLD custom table as a unit, and identifying the second-level cache by the board card, the port and the virtual port.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the performing data communication by the master station host includes:
and the communication is carried out through two serial ports of the strategy board.
And using the communication extension plug-in of the first master station host to carry out the strategy board of the slave-to-slave machine for carrying out master-slave machine communication.
And when the number of the inter-station communication ports of the main station host and the execution station is less than the first number (8), the communication expansion plug-in of the second main station host is used for communicating with the sub-station.
And when the number of the inter-station communication ports of the main station host and the sub-station is larger than a first numerical value (8), the start board Ethernet port of the main station host is used for communication after being expanded by a large user.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the protocol includes:
and the main station host sends the acquisition information of the new energy generator set to a master station device through a 2M channel on the strategy board, receives a load shedding control command sent by the master station, and sends the load shedding command to each subarea subordinate station according to a preset distribution control principle. The contents of the specific communication protocol are shown in table 1.
TABLE 1 protocol for communication information between master station host and master station
The communication information protocol of the master station host and the slave machines is characterized in that the master station host communicates with a slave machine strategy board through a 10M optical fiber interface on the strategy board or the communication extension plug-in, the master station host needs to transmit frames when communicating with the slave machines, the transmission interval of messages is 0.833ms, the transmission dispersion is smaller than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the message data CRC errors are identified by the FPGA, and statistical data are provided for an application layer. Specific communication protocols are shown in table 2.
TABLE 2 protocol for communication information between master station host and slave
In table 2, the contents of the words 2-85 of the master station host command frame for the communication message from the slave are related fixed values (the fixed values of the unused elements are all set to 0) which need to be set by the elements 1 to 6 sent from the host to the slave, and the contents of the words 2-85 of the normal frame are all actual fixed values; words 86 and 87 are the common constant values for elements 1-6; each bit of the command positive code bit0-5 in the 89 th-90 th words corresponds to an element 1-6 jump command, the rest is spare, the command anti-code bit0-5 corresponds to an element 1-6 jump command anti-code, and the rest is spare; the 91 th word has 16 bits, bit0 corresponds to the total function state of the host, bit1 corresponds to the total outlet state of the host, bit2 corresponds to the pressure plate state of the host channel, bit3 corresponds to the effective state of the host interactive data, and the rest bits are reserved.
In table 2, the contents of the words 2-12 of the uplink frame from the slave to the master are the data values of elements 1 to 6 transmitted from the slave to the master (all unused element constant values are set to 0x 0000); each Bit0-5 of the 87 th word respectively corresponds to the 1-6 on-off states of the elements (1 on, 0 off), each Bit 6-11 respectively corresponds to the 1-6 on-off states of the elements (1 on, 0 off); words 88-90 represent fault type data for elements 1-6; the 91 st word represents the CT and PT disconnection states of 6 elements, bit0-5 respectively correspond to 1-6 CT disconnection of the elements, bit 6-11 respectively correspond to 1-6 PT disconnection of the elements, and unused bits are set to be 0; the 93 th word is a state word, wherein bit0 is a channel abnormal state, bit1 is a slave total starting state, bit2 is a slave channel switching state, and bit3 is a slave data valid state.
The communication protocol of the master station host and the substation device adopts HDLC protocol, uses CRC-CCITT 16 bit check (channel error code can be prevented), and the remote command confirmation can be carried out and executed only when the same effective command message is received for at least three times. The specific communication protocol of the master station host and the slave station is shown in table 3.
TABLE 3 protocol for communication information between Master station host and substation
In table 3, the contents of words 1 to 9 of the normal frame of the slave station are all 0x0000 (for standby); the 1 st word load-cutting type command positive code of the command frame has 16 bits, and each 2 bits represent a load-cutting type command unit; the 2 nd word load shedding type command is inversed, and the value is bit-by-bit inversion of the positive code; the 2 nd to 8 th characters are load cutting requirements, and the unit is MW; the low eight bit in the 9 th word recovery load reminding command is a positive code, the high eight bit is a negative code, and the positive code is a negative code after bit inversion; the load recovery reminding command from the master station host to the substation only uses 1 bit for positive code/negative code; the 10 th word status word has 16 bits in total, wherein bit0 represents a synchronous starting mark sent by the master station host to the substation, bit1 represents a channel pressing plate status from the master station host to the corresponding substation, bit2 represents channel abnormity for controlling the master station host to receive the substation, bit3 represents a preset load-shedding test bit status (standby) sent by the master station host to the substation, bit4 is standby, bit5 represents another cabinet maintenance pressing plate status of the master station host, and bits 6-15 are standby.
In table 3, word 1 of the slave station-master station host communication message is defined as a frame number, where frame number (0) means the reducible quantity counted by the frame transmission slave station with frame number 0, and frame number (1) means the reducible quantity counted by the frame transmission slave station with frame number 1; the 2 nd to 7 th words represent the cuttable/real cuttable quantity of the N-type load, and the unit is MW; the 10 th word is a status word, wherein bit0 is standby, bit1 is the status of the channel pressing plate from the substation to the corresponding master station host, and bit2 is the status of the channel exception of the substation receiving master station host.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the manufacturing a communication-related component includes planning the communication component as follows:
and the frame part realizes the functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing.
And the protocol part is used for manufacturing a receiving and sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet (2M), an internal Ethernet (FT3) and an external Ethernet (2M).
And the application part is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
Referring to fig. 2, a second embodiment of the present invention provides a communication system applied to a new energy stability control system, including:
and the frame module is used for establishing a frame part of a communication framework and identifying the unique address and the identification information of the master station host, the slave machines, the substations, the device board cards and the Ethernet ports.
And the protocol module is used for formulating a communication protocol of the stability control system, and the master station host machine carries out data communication.
And the component module is used for manufacturing communication related components and realizing communication initialization, data real-time reading, data frame continuity, accuracy and error rate judgment.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the framework module includes a five-level model and a two-level cache.
The five-level model includes devices, boards, ethernet, ports (FT3 or 2M) and virtual ports, obtained through global variables in the visualization device design software (VLD) for addressing and statistical information.
The first-level cache is established and maintained by the application and used for the cyclic use of the cache region, and the latest message is obtained through the real-time pointer.
And the second-level cache is created by taking a virtual port configured by the VLD custom table as a unit, and is identified by the board card, the port and the virtual port.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the protocol module includes:
and the master station host transmits the acquisition information of the new energy generator set to the master station device through a 2M channel on the strategy board, receives a load shedding control command transmitted by the master station, and transmits the load shedding command to each subordinated station of the subareas according to a preset distribution control principle.
And the slave communication unit is used for a communication information protocol between the master station host and the slave, the master station host communicates with the slave strategy board through a 10M optical fiber interface on the strategy board or the communication extension plug-in, the master station host needs to transmit in frames when communicating with the slave, the transmission interval of the message is 0.833ms, the transmission dispersion is less than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the CRC error of the message data is identified by the FPGA, and the statistical data is provided for an application layer.
And the substation communication unit is used for a communication protocol between the main station host and the substation, the communication messages of the main station host and the substation realize one-time data and command exchange within 1.667ms, the communication protocol adopts an HDLC protocol, CRC-CCITT 16-bit check (channel error code can be prevented), and the command confirmation requires that the remote command confirmation can be carried out and executed only by continuously receiving the same effective command message for at least three times.
In combination with the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, where the component module includes:
and the frame unit is used for realizing functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing.
And the protocol unit is used for manufacturing a receiving and sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet (2M), an internal Ethernet (FT3) and an external Ethernet (2M).
And the application unit is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
A third embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the communication system establishment method applied to the new energy stability control system as described above.
The embodiment of the invention aims to protect a communication system establishing method, a system and a device applied to a new energy stability control system, and has the following effects:
the invention provides a communication method of a new energy stable control system, which is extremely simple, reliable and economic as far as possible, has definite communication function distribution of all plug-ins, is reasonable in design, safe and practical, can ensure that data and commands are exchanged once in the whole network within 1.667ms, and realizes the quick real-time interaction of various information such as local data acquisition between stations of the power grid stable control system, element operation state, fault type, trip command, strategy selection, control strategy execution, power grid operation mode identification and the like.
The computer program product of the communication system establishing method and device applied to the new energy stability control system provided by the embodiment of the invention comprises a computer readable storage medium storing program codes, wherein instructions included in the program codes can be used for executing the method in the foregoing method embodiment, and specific implementation can be referred to the method embodiment, and is not described herein again.
Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk and the like, and when a computer program on the storage medium is operated, the communication system establishment method applied to the new energy stable control system can be executed, so that data and commands can be exchanged once in the whole network within 1.667ms, and rapid real-time interaction of various information, such as inter-station local data acquisition of the power grid stable control system, element operation state, fault type, trip command, strategy selection, control strategy execution, power grid operation mode identification and the like, can be realized.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A communication system establishment method applied to a new energy stability control system is characterized by comprising the following steps:
establishing a frame part of a communication framework, and identifying unique addresses and identification information of a master station host, a slave machine, a substation, device board cards and Ethernet ports;
formulating a communication protocol of the stability control system for the master station host to carry out data communication;
and manufacturing communication related elements for communication initialization, real-time data reading, data frame continuity, accuracy and error rate judgment.
2. The method for establishing the communication system applied to the new energy stability control system according to claim 1, wherein the establishing the frame part of the communication architecture comprises:
establishing a five-level model which comprises a device, a board card, an Ethernet, a port and a virtual port, and acquiring global variables in visual device design software for addressing and information statistics;
establishing a first-level cache, establishing and maintaining by an application, using the first-level cache for a cache region to be recycled, and acquiring a latest message through a real-time pointer;
and establishing a second-level cache, establishing the second-level cache by taking a virtual port configured by the VLD custom table as a unit, and identifying the second-level cache by the board card, the port and the virtual port.
3. The method for establishing the communication system applied to the new energy stability control system according to claim 1, wherein the master station host performs data communication, and comprises:
communicating through two serial ports of the strategy board;
using a communication extension plug-in of a first master station host to carry out a strategy board connected with a slave machine to carry out master-slave machine communication;
when the inter-station communication port of the main station host and the execution station is smaller than a first value, a communication expansion plug-in of a second main station host is used for communicating with the sub-station;
and when the inter-station communication port of the main station host and the substation is larger than a first value, the start board Ethernet port of the main station host is used for communication after being expanded by a large user.
4. The method for establishing a communication system applied to a new energy stability control system according to claim 1, wherein the communication protocol comprises:
the main station host uploads the acquisition information of the new energy generator set to a master station device through a 2M channel on a strategy board, receives a load shedding control command sent by the master station, and sends the load shedding command to each sub-station of the subareas according to a preset distribution control principle;
the communication information protocol of a master station host and a slave machine, the master station host communicates with a slave machine strategy board through a 10M optical fiber interface on the strategy board or a communication extension plug-in, the master machine and the slave machine need to transmit frames when communicating, the transmission interval of messages is 0.833ms, the transmission dispersion is less than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the message data CRC errors are identified by an FPGA, and statistical data are provided for an application layer;
the communication protocol of the master station host and the substation device adopts HDLC protocol, uses CRC-CCITT 16 bit check, and can carry out remote command confirmation and execution only after receiving the same effective command message for at least three times.
5. The method for establishing a communication system applied to a new energy stability control system according to claim 1, wherein the step of manufacturing the communication related elements comprises the steps of:
the frame part realizes the functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing;
the protocol part is used for manufacturing a receiving element and a sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet and an external Ethernet;
and the application part is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
6. The utility model provides a communication system for stable control system of new forms of energy which characterized in that includes:
the frame module is used for establishing a frame part of a communication framework and identifying unique addresses and identification information of the master station host, the slave machines, the substations, the device board cards and the Ethernet ports;
the protocol module is used for formulating a communication protocol of the stability control system, and the master station host machine carries out data communication;
and the component module is used for manufacturing communication related components and realizing communication initialization, data real-time reading, data frame continuity, accuracy and error rate judgment.
7. The communication system applied to the new energy stability control system according to claim 6, wherein the framework module comprises a five-level model and a two-level cache;
the five-level model comprises a device, a board card, an Ethernet, a port and a virtual port, and is obtained through global variables in visual device design software and used for addressing and information statistics;
the first-level cache is established and maintained by an application and is used for circularly using a cache region and acquiring a latest message through a real-time pointer;
and the second-level cache is created by taking a virtual port configured by the VLD custom table as a unit, and is identified by the board card, the port and the virtual port.
8. The communication system applied to the new energy stability control system according to claim 6, wherein the protocol module comprises:
the master station host sends the acquisition information of the new energy generator set to a master station device through a 2M channel on the strategy board, receives a load shedding control command sent by the master station, and sends the load shedding command to each sub-station of each subarea according to a preset distribution control principle;
the slave communication unit is used for communication information stipulation of a master station host and a slave, the master station host is communicated with the slave strategy board through a 10M optical fiber interface on the strategy board or the communication extension plug-in, the master station host and the slave strategy board need to transmit in frames when the master station host and the slave station communicate, the transmission interval of messages is 0.833ms, the transmission dispersion is less than 100 mu s, the message communication error rate statistics is adjusted in real time according to the transmission interval change, the message data CRC errors are identified by the FPGA, and statistical data are provided for an application layer;
and the substation communication unit is used for a communication protocol between the main station host and the substation, the communication messages of the main station host and the substation realize one-time data and command exchange within 1.667ms, the communication protocol adopts an HDLC protocol, CRC-CCITT 16-bit verification is used, and the command confirmation requires that the remote command confirmation can be carried out and executed only by receiving the same effective command message for at least three times continuously.
9. The communication system applied to the new energy stability control system according to claim 6, wherein the element module comprises:
the frame unit is used for realizing functions of channel initialization, virtual table and buffer area error or validity check, model establishment and filling by using elements such as communication initialization, buffer pointer refreshing and deframing;
the protocol unit is used for manufacturing a receiving and sending element of each set of protocol and realizing specific data communication of an FT3 protocol, a conventional 2M protocol, an internal Ethernet and an external Ethernet;
and the application unit is used for manufacturing application elements and is used for three-frame tripping, communication abnormity judgment and real-time message reading.
10. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the communication system establishment method applied to the new energy stability control system according to any one of claims 1 to 5.
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