CN109525041B - Secondary relay protection chip of intelligent substation and data interaction method - Google Patents
Secondary relay protection chip of intelligent substation and data interaction method Download PDFInfo
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Classifications
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- H02J13/0062—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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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
Abstract
The application discloses a secondary relay protection chip of an intelligent substation and a data interaction method. The HSR exchange module receives the message data of the intelligent substation equipment transmitted by the Ethernet physical layer interface module through the HSR MAC interface module, analyzes and classifies the message data, and controls and transmits time sequence according to the priority of the message data. The secondary relay protection chip realizes the functions of analyzing, classifying and the like of various current data of the intelligent substation through an Ethernet data channel established by an independent HSR module, so that each layer of equipment of the intelligent substation is convenient for simplifying network design, reducing equipment power consumption and cost, enhancing single set of equipment reliability, simplifying engineering field network architecture and construction difficulty, improving system integration level and improving reliability and maintainability of system operation.
Description
Technical Field
The application relates to the technical field of intelligent substations, in particular to a secondary relay protection chip of an intelligent substation and a data interaction method.
Background
The equipment of the intelligent substation of the power system is generally divided into three layers of equipment, namely a process layer, a spacer layer and a station control layer. The process layer comprises intelligent equipment, a merging unit, an intelligent terminal and the like which are formed by primary equipment and intelligent components and is used for realizing the related functions of substation electric energy distribution, transformation, transmission, measurement, control, protection, metering, state monitoring and the like. The spacer layer device generally refers to secondary devices such as a relay protection device, a measurement and control device and the like, and realizes the functions of using one spacer data and acting on the spacer primary device, namely, communicating with various remote input/output, intelligent sensors and controllers. The station control layer comprises subsystems such as an automation system, station domain control, a communication system, a time synchronization system and the like, realizes functions of measurement and control for the whole station or more than one primary equipment, and completes related functions such as data acquisition and monitoring control, operation locking, synchronous phasor acquisition, electric energy acquisition, protection information management and the like.
The inventors have made the following considerations in the implementation of the present application: for three layers of different devices, the network communication interfaces are mostly Ethernet interfaces, and the key data are often transmitted by adopting optical fibers. For process and spacer layer devices, the communication protocols for network transport include GOOSE (Generic Object Oriented Substation Event) and SV (Sampled Value), among others. GOOSE is a general object-centric substation event abstract model defined by IEC61850 standard, and provides a mechanism for rapid transmission such as command, alarm, etc., and is mainly used for realizing information transfer among a plurality of intelligent electronic devices, including transmission tripping and closing signals, fault wave recording start, etc. SV can be understood as a related model object and service that exchanges sampled values in a sampled dataset for transmission of critical real-time analog quantities. For the device of the station control layer, the communication protocol of network transmission is mostly MMS (manufacturing message specification), and the device of the spacer layer also needs to support the MMS network. MMS, the manufacturing message specification, IS a set of communication protocols defined by the IS0/IEC9506 standard for industrial control systems. The MMS standardizes the communication behaviors of the intelligent sensor, the intelligent electronic device and the intelligent control device with communication capability in the industrial field, so that the devices from different manufacturers have interoperability for substation data acquisition and monitoring control.
The inventor also finds that along with popularization of the accurate time setting protocol IEEE1588, application based on network time setting is also becoming popular, the requirement of multiple network interfaces is increasing, and at present, most intelligent devices designed by all power equipment manufacturers at the present stage are processed in a network dividing interface mode, namely, the intelligent devices comprise an MMS network port, a GOOSE network port, an SV network port, a 1588 network port and the like which are independently arranged, and the network ports are independently arranged and are independently applied, and may have network ports shared by partial network functions but have no all-in-one network form. Along with the application and development of the intelligent substation system, various problems and defects are also revealed, such as insufficient integration level of the whole system, excessive network wiring, rising of the manufacturing cost of the substation, larger power consumption of a single device, increased hardware fault points, slower data transmission and longer time delay in the engineering implementation process.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The application aims to provide a secondary relay protection chip of an intelligent substation and a data interaction method, which realize the functions of analyzing and classifying various current data of the intelligent substation such as MMS (multimedia message service) messages, GOOSE (generic object oriented substation event) messages, SV (space vector) messages and 1588 pair time messages and the like through an Ethernet data channel established by an independent HSR (high speed) module, so that each layer of equipment of the intelligent substation is convenient for simplifying network design, reducing equipment power consumption and cost, enhancing the reliability of single equipment, simplifying the network architecture and construction difficulty of an engineering site, improving the integration level of a system and improving the reliability and maintainability of the operation of the system.
In order to achieve the above purpose, the application provides a secondary relay protection chip of an intelligent substation, which comprises an HSR exchange module. The HSR exchange module comprises a plurality of HSR MAC interface modules and a plurality of Ethernet physical layer interface modules, receives the message data of the intelligent substation equipment transmitted by the Ethernet physical layer interface modules through the HSR MAC interface modules, analyzes the message data, classifies the message data, and controls and transmits time sequence according to the priority of the message data.
In a preferred embodiment, the types of the message data include MMS network messages, GOOSE network messages, SV network messages and IEEE1588 network messages.
In a preferred embodiment, the HSR exchange module further includes a data collision detection module and a command queue module. The data collision detection module is coupled with the HSR MAC interface module and is used for sending data frames to detect whether transmission collision occurs to the data transmitted by each HSR MAC interface module; the command queue module is coupled with the data conflict detection module, when the data conflict detection module detects data transmission conflict, data with high priority are processed first, and data with low priority enter the command queue module to wait.
In a preferred embodiment, the secondary relay protection chip further comprises: the main control CPU module is coupled with the HSR exchange module, and is used for receiving and processing the message data sent by the HSR exchange module, returning the processed message data to the HSR exchange module, and outputting the message data to the Ethernet physical layer interface module through the HSR MAC interface module according to the priority order by the HSR exchange module.
In a preferred embodiment, the HSR switch module further comprises a register. The registers are coupled with the main control CPU module and the HSR MAC interface modules, the main control CPU module can change the data exchange direction between the HSR MAC interface modules through configuring the information of the registers, and the main control CPU can also set the priority of the transmitted data in the secondary relay protection chip through configuring the information of the registers.
In a preferred embodiment, the secondary relay protection chip further comprises a time synchronization interface and a timer. The time tick interface is used for receiving an external time tick signal. And the timer is used for internally timing the secondary relay protection chip.
In a preferred embodiment, the secondary relay protection chip further includes a configuration MAC interface module, which is coupled to the main control CPU module, and the main control CPU module receives data transmitted by the configuration MAC interface module to configure the secondary relay protection chip.
In a preferred embodiment, the secondary relay protection chip further comprises a data encryption module and a secure storage module. The data encryption module is coupled with the HSR module and the CPU unit and is used for encrypting the data transmitted in the secondary relay protection chip. The secure storage module is coupled with the data encryption module and is used for securely storing the encrypted data.
In a preferred embodiment, the secondary relay protection chip further comprises: the sensor interface module is coupled with the main control CPU module, the sensor interface module comprises an ADC interface module and/or an FT3 photoelectric equipment interface module and is used for detecting and transmitting power grid data of the intelligent substation transmitted by a cable and/or an optical fiber, the main control CPU module is also used for receiving and processing the power grid data transmitted by the sensor interface module and sending the processed power grid data to the HSR exchange module, and the HSR exchange module outputs the power grid data to the Ethernet physical layer interface module through the HSR MAC interface module according to priority.
The application also provides a data interaction method of the secondary relay protection of the intelligent substation, which comprises the following steps: the HSR exchange module receives the message data of the intelligent substation equipment transmitted by the Ethernet physical layer interface module through the HSR MAC interface module, analyzes the message data, classifies the message data, directly transmits the message data to be transmitted to the corresponding Ethernet physical layer interface for transmission, and transmits the message data to be processed by the CPU to the main control CPU module; the main control CPU module receives and processes the message data sent by the HSR exchange module, and returns the processed message data to the HSR exchange module; and the HSR exchange module performs time sequence control according to the priority of the message data and outputs the message data to the Ethernet physical layer interface module through the HSR MAC interface module.
In a preferred embodiment, the type of the message data includes MMS network message, GOOSE network message, SV network message, IEEE1588 network message.
In a preferred embodiment, the data interaction method further comprises: the sensor interface module detects and transmits the power grid data transmitted by the cable and/or the optical fiber; the main control CPU module receives and processes the power grid data sent by the sensor interface module, and sends the processed power grid data to the HSR exchange module; and the HSR exchange module performs time sequence control according to the priority of the power grid data and outputs the power grid data to the Ethernet physical layer interface module through the HSR MAC interface module.
Compared with the prior art, the secondary relay protection chip and the data interaction method of the intelligent substation realize the protocol layer exchange routing function of independent HSR, analyze and classify and group the HSR data received by MAC according to the message type, forward the message needing to be sent through other ports, realize the functions of analyzing and classifying MMS messages, GOOSE messages, SV messages, 1588 time messages and the like which are needed to be used by the current various data of the intelligent substation, and the network data for various intelligent substations share one network, thereby being suitable for networking of various network data in the substation, reducing the configuration of a large number of switches, reducing the total cost of the system, optimizing the on-site network wiring, simplifying the design of a software and hardware system, reducing the overall power consumption of single-device equipment and also reducing the equipment cost; compared with a pure software mode, the HSR has the advantages that the time delay is greatly reduced, and the data processing speed is improved; the main control CPU module is also arranged for processing the HSR message which needs to be further processed by the main control CPU so as to achieve the optimization processing of the HSR network message; and by configuring the sensor interface module and the MAC interface module, the functions of the chip are increased, and the universality of the chip is greatly improved.
Drawings
Fig. 1 is a schematic diagram of module composition of a secondary relay protection chip of an intelligent substation according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a secondary relay protection chip of an intelligent substation according to an embodiment of the present application;
fig. 3 is a schematic diagram of the structure of an HSR exchange module according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an ADC interface module according to an embodiment of the application.
Detailed Description
The following detailed description of embodiments of the application is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the application is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
First, for ease of understanding, the following noun explanations are made:
HSR (high-availability seamless ring) represents a redundant communication technology of a high availability seamless ring network structure; MAC means physical address; clock Source represents Clock Source; global Clock represents Global Clock; DMA means direct memory access; DDR represents double Rate synchronous dynamic random Access memory; switch Module represents a switching Module; PHY denotes an ethernet physical interface; bridge represents a Bridge circuit; DC-DC Power represents a direct current-to-direct current Power supply; FT3Decoder means FT3 Decoder; fiber represents the optical port; REG FILE represents a list of registers; CMD QUE represents a command queue; CLK GEN represents a timer; ADC AFE represents the analog front end input of ADC; configurable Buffer the buffer; NORFLASH and NANDFLASH are both one type of nonvolatile flash memory; AXI (Advanced extensible Interface) is a bus protocol with high speed and high performance; SPI represents a serial peripheral interface; ethernet represents an internet interface; UART means universal asynchronous receiver transmitter; I2C represents a two-wire serial bus; GPIO stands for general purpose input/output interface.
Fig. 1 is a schematic block diagram of a secondary relay protection chip of an intelligent substation according to an embodiment of the present application. Fig. 2 is a schematic structural diagram of a secondary relay protection chip of an intelligent substation according to an embodiment of the present application. The secondary relay protection chip comprises: the HSR exchange module 10, optionally, further includes a main control CPU module 11, a time synchronization interface 12, a timer 13, a configuration MAC interface module 14, a data encryption module 15, a secure storage module 16, and a sensor interface module 17.
In this embodiment, the HSR switch module 10 is described by taking a 4-port gigabit ethernet as an example. Fig. 3 is an HSR Switch Module of this embodiment, where the HSR Switch Module 10 includes 4 HSR MAC interface modules A, B, C, D and 4 gigabit PHY interface modules A, B, C, D (ethernet physical layer interface modules), and the HSR Switch Module 10 is configured to receive, through the HSR MAC interface modules, packet data of a device of an intelligent substation transmitted by the PHY interface modules, switch Module analyze the packet data, classify the packet data, perform timing control according to a priority of the packet data, and transmit the packet data, where types of the packet data include MMS network packets, GOOSE network packets, SV network packets, and IEEE1588 network packets. In other embodiments, the message types are not limited to the above-mentioned ones, but may include all types of 2 bytes referred to in the EtherType field in the standard ethernet protocol.
The 4-port gigabit HSR switching module can switch the data of the four ports A, B, C, D and send the data to an AXI bus in the system. The four ports may be switched in three modes: a to B, C to D; a to C, B to D; a to D, B to C. A. Data for the B, C, D four ports can also be transferred independently to the DDR memory over the AXI bus interface. The synchronous sampling method for multiple types of data access uses a special IP core for synchronous processing. The number of the sub-machines adopting the 4-port gigabit HSR switching module for networking is not more than 30, and the network time delay can be within 5ms of the protection action. The HSR switching module is based on a node redundancy algorithm, and two HSR MAC ports which are one in and one out are needed for networking of the HSR switching module to form a node. When one HSR MAC port of one node receives data and then directly forwards the data to the other HSR MAC port, the message double-sending double-receiving function can be realized, and the technology of zero switching time is realized when the network fails.
The method is characterized in that various messages of the intelligent substation such as MMS network messages, GOOSE network messages, SV network messages, 1588 time messages and the like are analyzed and classified, a group of time synchronization or related data such as synchronous current and voltage sampling values can be provided for secondary equipment such as relay protection, measurement and control and the like, the current and voltage instantaneous values of an electric power system are obtained by collecting/merging data of a plurality of electronic transformers, the obtained current and voltage instantaneous values are transmitted to relay protection equipment and the like according to determined data quality, network data for various intelligent substations can share one network, the method is suitable for networking of network data in the substation, configuration of a large number of switches is reduced, the total cost of the system is reduced, meanwhile, on-site network wiring is simplified, and in addition, the hardware structure of the HSR switching module realizes part of functions of an HSR communication protocol, the data transmission speed is greatly improved, and the time delay is reduced.
Optionally, the HSR exchange module 10 further includes a data collision detection module 10a and a command queue module 10b. The data collision detection module 10a is coupled to the HSR MAC interface module A, B, C, D, and is configured to send a data frame to detect whether a transmission collision occurs in the data transmitted by each HSR MAC interface module. The command queue module 10b is coupled to the data collision detection module 10a, and when the data collision detection module 10a detects a data transmission collision, the data with high priority is processed first, and the data with low priority enters the command queue module 10b to wait.
Optionally, the secondary relay protection chip further comprises a main control CPU module 11. The main control CPU module 11 is coupled to the HSR switch module 10, and the main control CPU module 11 is configured to receive and process the message data sent by the HSR switch module 10, and return the processed message data to the HSR switch module 10, where the HSR switch module 10 outputs the message data to the ethernet physical layer interface module through the HSR MAC interface module according to the priority order. By adding the main control CPU module 11, the functions of the chip can be further expanded. Specifically, in this embodiment, the main control CPU module is a dual-core Cortex-A9 processor.
The secondary relay protection chip is further provided with a DDR3 storage unit and a DDR3 controller. After classifying the various messages, the HSR exchange module 10 stores the classified data through the DDR3 and shares the classified data with the main control CPU module 11 in different areas through a memory sharing manner to perform processing of each class.
Optionally, the HSR switch module 10 further includes a register 10c. The register 10c is coupled with the main control CPU module 11 and the HSR MAC interface modules, the main control CPU module 11 can change the data exchange direction between the HSR MAC interface modules by configuring the information of the register 10c, and the main control CPU can also set the priority of the data transmitted in the secondary relay protection chip by configuring the information of the register 10c.
Optionally, in order to ensure time accuracy, the secondary relay protection chip further includes a time synchronization interface 12, where the time synchronization interface 12 is configured to receive an external time synchronization signal. Optionally, global Clock is selected as the Clock source for the time synchronization. The secondary relay protection chip further comprises a timer 13, wherein the timer is used for timing the inside of the secondary relay protection chip, and can accurately delay data.
Optionally, the secondary relay protection chip further includes a configuration MAC interface module 14, where the configuration MAC interface module 14 is coupled to the main control CPU module 11, and the main control CPU module 11 receives data transmitted by the configuration MAC interface module 14 to configure the secondary relay protection chip, for example, configure a data flow direction of the HSR switch module.
Optionally, the secondary relay protection chip further comprises a data encryption module 15 and a secure storage module 16. The data encryption module 15 is coupled to the HSR module and the CPU unit, and is configured to encrypt data transmitted in the secondary relay protection chip. The secure storage module 16 is coupled to the data encryption module 15 for secure storage of encrypted data. By providing the data encryption module 15 and the secure storage module 16, the security of the chip data can be protected.
Optionally, the secondary relay protection chip further comprises a sensor interface module 17. The sensor interface module 17 is coupled to the main control CPU module 11, where the sensor interface module 17 includes an ADC interface module 17a and/or an FT3 optoelectronic device interface module 17b, and is configured to detect and transmit power grid data of the intelligent substation transmitted by a cable and/or an optical fiber, and the main control CPU module 11 is further configured to receive and process the power grid data transmitted by the sensor interface module 17, and send the processed power grid data to the HSR exchange module 10, where the HSR exchange module 10 outputs the power grid data to the ethernet physical layer interface module through the HSR MAC interface module according to a priority. Optionally, the ADC interface module 17a and the FT3 optoelectronic device interface module 17b are connected to the AXI bus by Bridge.
Fig. 4 is a block diagram of the structure of the ADC interface module according to the present embodiment. The ADC interface module 17a is provided with 16 paths of analog front end inputs, and the corresponding 16 paths of ADC converters perform analog-to-digital conversion on the data input from the analog front end and store the data in the buffer area, and the DMA of the ADC interface module 17a carries the data in the buffer area to the DDR3 memory of the main control CPU module, where the data is subjected to corresponding calculation processing by the main control CPU module. The generation of the sampling clock of the ADC interface module may generate different sampling rate clocks according to the register configuration. The setting of the data frame length can be set by configuring each ADC channel to different sampling points, such as 80, 96, 256, etc., according to the requirement of the real-time performance of the system.
In this embodiment, the chip selects DC-DC Power, and in order to facilitate the function expansion, the chip further integrates 1 norflast memory and controller, 1 nandflast memory and controller, and 1 MINISD memory and controller. The chip supports undervoltage detection, low power consumption mode and peripheral interface wake-up function. In addition, a plurality of general peripheral interfaces such as SPI, ethernet, UART, I, 2 and C, GPIO are also supported.
In this embodiment, the data interaction of the secondary relay protection of the intelligent substation mainly includes the data interaction of the HSR exchange module and the data interaction input by the sensor.
The data interaction process of the HSR exchange module is as follows: the HSR exchange module 10 receives message data of the intelligent substation equipment transmitted by the ethernet physical layer interface module through the HSR MAC interface module, analyzes the message data, classifies the message data, directly sends the message data to be forwarded to a corresponding ethernet physical layer interface for forwarding, and sends the message data to be processed by the CPU to the main control CPU module 11, wherein the message data comprises MMS network message, GOOSE network message, SV network message and IEEE1588 network message, specifically, the HSR exchange module 10 forms a node from two ports of one input port and one output port based on a node redundancy algorithm, and directly forwards the message data to one HSRMAC port of one node to the other HSR MAC port after receiving the data; the main control CPU module 11 receives and processes the message data sent by the HSR exchange module 10, and returns the processed message data to the HSR exchange module 10; the HSR switch module 10 performs timing control according to the priority of the message data and outputs the message data to the ethernet physical layer interface module through the HSR MAC interface module.
The interaction process of the data input by the sensor is as follows: the sensor interface module 17 detects and transmits the power grid data transmitted by the cable and/or the optical fiber; the main control CPU module 11 receives and processes the power grid data sent by the sensor interface module 17, and sends the processed power grid data to the HSR exchange module 10; the HSR switching module 10 performs timing control according to the priority of the power grid data and outputs the power grid data to the ethernet physical layer interface module through the HSR MAC interface module.
In summary, the secondary relay protection chip and the data interaction method of the intelligent substation realize the protocol layer exchange routing function of independent HSR, analyze and classify the HSR data received by the MAC according to the message type, forward the message needing to be sent by other ports, and process the HSR message needing to be further processed by using the main control CPU, so as to achieve the optimization processing of the HSR network message; the main control CPU carries out corresponding calculation processing and receiving and transmitting control on various network messages. The related series functions of receiving, storing, classifying, calculating, processing and transmitting control of MMS messages, GOOSE messages, SV messages, 1588 time messages and the like which are used by the current various data of the intelligent substation are realized, the network data of various intelligent substations share a network, the network data are suitable for networking of various network data in the substation, the configuration of a large number of switches is reduced, the total cost of the system is reduced, and meanwhile, the on-site network wiring is optimized; each intelligent device uses a single network interface, so that the design of a software and hardware system is simplified, the overall power consumption of single-device equipment is reduced, and the equipment cost is also reduced; the HSR realizes part of functions by hardware, so that the time delay is greatly reduced, and the data processing speed is improved; in addition, the Ethernet communication speed can reach full speed, and supports different communication speeds such as 10/l00/l000Mbps and the like; the flexibility is high, and the physical layer PHY chip supporting multiple types of interfaces is provided; the ethernet medium is suitable for both electrical and optical communication media. In general, the application of the secondary relay protection chip can simplify network design of all layers of equipment of the intelligent substation, reduce equipment power consumption and cost, enhance single equipment reliability, simplify engineering field network architecture and construction difficulty, improve system integration level and improve reliability and maintainability of system operation.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present application are presented for purposes of illustration and description. It is not intended to limit the application to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the application and its practical application to thereby enable one skilled in the art to make and utilize the application in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the application be defined by the claims and their equivalents.
Claims (7)
1. The utility model provides an intelligent substation's secondary relay protection chip which characterized in that includes:
the HSR exchange module comprises a plurality of HSR MAC interface modules and a plurality of Ethernet physical layer interface modules, and the HSR exchange module receives the message data of the intelligent substation equipment transmitted by the Ethernet physical layer interface modules through the HSR MAC interface modules, analyzes the message data, classifies the message data, controls time sequence according to the priority of the message data and transmits the message data;
the HSR switching module further includes:
the data collision detection module is coupled with the HSR MAC interface module and is used for sending data frames to detect whether transmission collision occurs to the data transmitted by each HSR MAC interface module;
the command queue module is coupled with the data conflict detection module, and when the data conflict detection module detects data transmission conflict, data with high priority are processed first, and data with low priority enter the command queue module to wait;
the HSR switching module further includes:
the register is coupled with the main control CPU module and the HSR MAC interface modules, the main control CPU module can change the data exchange direction between the HSR MAC interface modules through configuring the information of the register, and the main control CPU can also set the priority of the transmitted data in the secondary relay protection chip through configuring the information of the register.
2. The secondary relay protection chip of the intelligent substation of claim 1, further comprising:
the main control CPU module is coupled with the HSR exchange module and is used for receiving and processing the message data sent by the HSR exchange module and returning the processed message data to the HSR exchange module, and the HSR exchange module outputs the message data to the Ethernet physical layer interface module through the HSR MAC interface module according to the priority order.
3. The secondary relay protection chip of the intelligent substation of claim 2, further comprising:
the time setting interface is used for receiving external time setting signals;
and the timer is used for internally timing the secondary relay protection chip.
4. The secondary relay protection chip of the intelligent substation of claim 2, further comprising:
the configuration MAC interface module is coupled with the main control CPU module, and the main control CPU module receives the data transmitted by the configuration MAC interface module to configure the secondary relay protection chip.
5. The secondary relay protection chip of the intelligent substation of claim 2, further comprising:
the data encryption module is coupled with the HSR module and the CPU unit and is used for encrypting the data transmitted in the secondary relay protection chip;
and the secure storage module is coupled with the data encryption module and is used for carrying out secure storage on the encrypted data.
6. The secondary relay protection chip of the intelligent substation of claim 2, further comprising:
the sensor interface module is coupled with the main control CPU module, the sensor interface module comprises an ADC interface module and/or an FT3 photoelectric equipment interface module and is used for detecting and transmitting power grid data of the intelligent substation transmitted by a cable and/or an optical fiber, the main control CPU module is also used for receiving and processing the power grid data transmitted by the sensor interface module and sending the processed power grid data to the HSR exchange module, and the HSR exchange module outputs the power grid data to the Ethernet physical layer interface module through the HSR MAC interface module according to priority.
7. The secondary relay protection chip of the intelligent substation according to claim 1, wherein the types of the message data include MMS network messages, GOOSE network messages, SV network messages, and IEEE1588 network messages.
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| CN111198840B (en) * | 2019-11-27 | 2023-12-22 | 南京国电南自维美德自动化有限公司 | GOOSE and MMS common network communication method and system suitable for dual-core system |
| CN111131214B (en) * | 2019-12-18 | 2021-12-21 | 华南理工大学 | Method for converting SV message into R-SV message between transformer substations |
| CN112671598B (en) * | 2020-12-01 | 2021-09-24 | 南方电网数字电网研究院有限公司 | Special algorithm hardware module for electric power suitable for electric power system control protection device |
| CN112543193B (en) * | 2020-12-02 | 2022-11-22 | 广东电网有限责任公司江门供电局 | Remote transmission method for synchronous acquisition of action message data of relay protection device |
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