CN105869385A - Electrical power system data acquisition and transmission on-chip system supporting IEC61850 - Google Patents
Electrical power system data acquisition and transmission on-chip system supporting IEC61850 Download PDFInfo
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- CN105869385A CN105869385A CN201610327007.3A CN201610327007A CN105869385A CN 105869385 A CN105869385 A CN 105869385A CN 201610327007 A CN201610327007 A CN 201610327007A CN 105869385 A CN105869385 A CN 105869385A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses an electrical power system data acquisition and transmission on-chip system supporting IEC61850. The electrical power system data acquisition and transmission on-chip system comprises a data acquisition interface, a data processing module, an external interface and a communication interface, wherein the acquisition interface comprises an analog-digital converter (ADC)AD 7656 responsible for analog signal acquisition, and a GPIO interface responsible for digital signal acquisition; the data processing module is an FPGA processor embedded with an ARM926 and is responsible for managing transmission of data between ADC and the communication interface and protocol conversion of the data; the external interface comprises UART, IIC and SPI and is responsible for communication with external equipment; the communication interface comprises AES advanced encryption of a presentation layer, MAC of a data link layer, a PHY chip of a physical layer, and supports optical fiber and Ethernet communication. The on-chip system has the characteristics of small size, good functional expandability, flexible communication mode and support of digital substation protocol communication.
Description
Technical field
The present invention relates to the technical field of power communication, particularly to a kind of electricity supporting IEC61850 agreement
Force system data acquisition and transmission SOC(system on a chip).
Background technology
Power system of data acquisition is the important step of security of system stable operation.Relay protection, the quality of power supply
Monitoring, perturbation analysis etc. application is required for the support of system operation data.Along with connecing of regenerative resource
Enter, the situation such as universal of digital transformer substation, system is to the precision of data acquisition, speed (real-time) all
Have higher requirement.As a example by digital transformer substation, the service data of system (three-phase voltage, electric current,
On off state etc.) needs of data are acquired from electric mutual inductor, are transmitted by network in station, are connect
Receiving unit receives or data are processed by application apparatus, it is achieved monitor or send action command, and whole logical
Letter process is built upon on the communication specification of IEC61850 carrying out.It is many that the quality of communication affects transformer station
Plant the realization of application function, and then affect the stability of system.Current harvester primarily serves the purpose of from biography
Sensor gathers data, but does not support the IEC61850 normative translation of data, needs external protocol converter；
Simultaneously because the restriction of data-handling capacity and the requirement of real-time property, the most only carry out single data acquisition
Data are not further processed (such as relay protection, power quality analysis etc.) by collection and transmission.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that a kind of support
The power system of data acquisition of IEC61850 agreement and transmission SOC(system on a chip), divided by ADC and GPIO mouth
Other to analog quantity (voltage signal, current signal, air pressure, wind speed, the wind direction etc.) sum in power system
Word amount (on off state) is acquired, processor process data and transmit, and finally process is tied
Fruit is transmitted by the way of serial ports or Ethernet, can realize the monitoring of Operation of Electric Systems online data.Should
System has that volume is little, function expansibility is strong, communication modes is flexible, data-handling efficiency is high, low cost
Feature.
The purpose of the present invention is achieved through the following technical solutions:
A kind of power system of data acquisition supporting IEC61850 agreement and transmission SOC(system on a chip), on described
System integration data acquisition interface, data processing module, communication interface, Peripheral Interface；
Wherein, described data acquisition interface includes analog acquisition mouth ADC and digital data acquisition mouth GPIO, real
Now to digital quantity and the collection of analog quantity；
Described data processing module is embedded into the FPGA of ARM926, it is achieved described SOC(system on a chip) data flow con-trol
And communication protocol conversion；
Described communication interface include being integrated in inside the AES superencipherment module representing layer being sequentially connected with,
The MAC of data link layer, the PHY chip of physical layer and Ethernet interface and optical fiber interface, count
According to communication transfer；
Described Peripheral Interface includes UART, IC, SPI, is responsible for carrying out communication with external equipment；
Described data processing module is respectively with described data acquisition interface, communication interface and Peripheral Interface even
Connect.
Further, described analog acquisition interface uses 16 analog-digital converter AD7656, supports 6 tunnels
Analogue signal inputs；Described digital collection interface uses 32 GPIO mouths.
Further, the analog quantity of described analog acquisition interface collection is substation PT, CT secondary side
Voltage, current signal, and by air pressure, wind speed, the signal of telecommunication of wind transducer conversion, by simulation
Signal input enters AD7656 chip, is converted to the accessible digital signal of SOC(system on a chip).
Further, the digital quantity of described digital collection interface collection is line switching state, with GPIO mouth
Connecting, ARM chip can obtain line switching state by reading GPIO mouth level state.
Further, the sample frequency of described analog-digital converter AD7656 is set to: 5k, 32k, 64k or
96k, conversion accuracy is 16, and its data transfer mode is set to MCU transmission or dma mode transmission.
Further, described data processing module is the FPGA of the ARM926 of embedded 32, is responsible for number
According to the transmission between acquisition interface, data processing module, Peripheral Interface and communication interface, and to being adopted
Collection signal carries out stipulations conversion, packs the data to meet IEC61850 agreement, serial ports 103 agreement, with
The too packet of net 103 agreement, supports the communication of digital transformer substation.
Further, the chip program of the FPGA of described ARM926 is write under Keil4 development environment, bag
Include: AD gathers converse routine, stipulations converse routine, Ethernet router, serial ports router, wherein
AD conversion supports MCU or dma mode, and stipulations converse routine is developed according to IEC61850-9-2 standard.
Further, described stipulations converse routine realizes converting the data into meeting IEC61850 consensus standard
Packet, voltage, the magnitude of current pack with SV message form, and line switching amount is with GOOSE message
Form pack；Simultaneously according to Ethernet 103 agreement, packet is packed by serial ports 103 agreement
For Ethernet, serial communication.
Further, described superencipherment deciphering AES module is used for transmission and reception data are carried out encryption and decryption,
Ensure communication security；
Described PHY chip is DP83849 chip；
Described Ethernet interface is ethernet communication interface RJ45-100, and described optical fiber interface is
The fiber optic data communication interface HFBR-5803 of 10Mbps/100Mbps, described Ethernet interface and optical fiber interface realize
Communication is carried out with the outside reception of digital transformer substation main website, analyzing device.
Further, described UART interface supports RS232 physical interface and/or RS485 physical interface, institute
Stating SPI interface and IIC interface is expanded function interface, three all can be as communication and function debugging interface.
The present invention has such advantages as relative to prior art and effect:
1) present invention supports IEC61850 digital transformer substation communication criterion, it is not necessary to external protocol converter.
2) present invention supports the fiber optic communication of 10Mbps/100Mbps, improves efficiency of transmission, for relay
Protection etc. provides hardware foundation to the application that requirement of real-time is high.
3) volume of the present invention is little, low cost, and power consumption is little, it is easy to installs, has abundant Peripheral Interface, easily
In debugging and maintenance.
Accompanying drawing explanation
Fig. 1 is a kind of power system of data acquisition supporting IEC61850 agreement disclosed by the invention and Transporting
Upper overall system architecture figure；
Fig. 2 is modulus conversion chip AD7656 and analog signal voltage input range therein arranges signal
Figure；
Fig. 3 is PHY chip DP83849 structure chart；
Fig. 4 is Data Control and the stipulations flow path switch figure of ARM926.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, develop simultaneously referring to the drawings
The present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment
It is illustrated in figure 1 on the power system of data acquisition of a kind of IEC61850 of support agreement and Transporting and is
System overall structure figure, present embodiment discloses a kind of power system of data acquisition supporting IEC61850 agreement
With transmission SOC(system on a chip), described system on chip data acquisition interface, data processing module, communication connects
Mouthful.Described data acquisition interface includes analog acquisition mouth ADC and digital data acquisition mouth GPIO, is responsible for logarithm
Word amount and the collection of analog quantity；Described data processing module is embedded into the FPGA of ARM926, is responsible for described
Upper system data flow control and communication protocol conversion；Described communication interface includes the expression layer being integrated in inside
AES superencipherment module, the MAC of data link layer, the PHY chip of physical layer and Ethernet
Interface and optical fiber interface, carry out the communication transfer of data.Described Peripheral Interface includes UART, IC, SPI,
It is responsible for carrying out communication with external equipment.
Above-mentioned analog acquisition interface have employed 16 analog-digital converter AD7656, supports 6 tunnel analogue signals
Input；Digital collection interface have employed 32 GPIO mouths.
The analog quantity of described analog acquisition interface collection be mainly substation PT, the voltage of CT secondary side,
Current signal, and the signal of telecommunication by various kinds of sensors conversions such as air pressure, wind speed, wind directions.By simulation
Signal input enters AD7656 chip, the accessible digital signal of the system that is converted to.Concrete analog digital conversion
The structured flowchart of chip AD7656 is as shown in Figure 2.The digital quantity that described digital collection interface gathers is main
For line switching state, being connected with GPIO mouth, ARM chip is by reading GPIO mouth level state
Obtain line switching state.Wherein, the sample frequency of AD conversion chip AD7656 may be configured as: 5k, 32k,
64k, 96k, conversion accuracy is 16.For the application scenarios that the requirement of real-times such as relay protection are higher, ADC
Data transfer mode be set to MCU transmission, for the requirement of real-times such as Power Quality Detection the highest should
By scene, for saving hardware resource, the transmission means of ADC is set to dma mode transmission, can arrange threshold
Value is 16,32,64,128 bytes.
The work process of ADC assembly AD7656 is as follows: under MCU transmission means, by ADC mould
Block initializes, and including mode of operation is set to MCU control model, enters the region storing data
Row clear operation, when ADC starts reading and modulus of conversion analog quantity, adc data is directly connect by ARM chip
Receive the 16 bit data write storage areas that depositor (Received Data Register, RDR) reads；
Under DMA transfer mode, ADC is initialized, including mode of operation being set to DMA control
Molding formula (arranges the trigger value of FIFO bin) simultaneously, then initializes DMA, including arranging
The source address of the reading data of DMA is RDR, and transmission objectives address (0x0005000 in SRAM)
Deng, when ADC starts reading and modulus of conversion analog quantity, dma controller just starts to pass the data in RDR
It is passed in FIFO, just the data in FIFO is write destination address when data volume reaches threshold value.
Above-mentioned data processing module have employed the XCKU040-FFVA1156ACY1509 of XILINX company
The FPGA of model, the ARM926 processor of embedded 32, it is responsible for data in acquisition port, processing module,
Transmission between Peripheral Interface and communication interface, detailed process as shown in Figure 4, and to signal collected
Carry out stipulations conversion, pack the data to meet IEC61850 agreement, serial ports 103 agreement, Ethernet 103
The packet of agreement, supports the communication of digital transformer substation.
The fpga chip program of above-mentioned ARM926 is write under Keil4 development environment, including: AD gathers and turns
Change program, stipulations converse routine, Ethernet router, serial ports router.Wherein AD conversion support
MCU, dma mode, stipulations converse routine is developed according to IEC61850-9-2 standard.
Above-mentioned stipulations converse routine can convert the data into the packet meeting IEC61850 consensus standard, should
Standard is the unique universal standard of power system automatic field, and voltage, the magnitude of current are with SV message
Form is packed, and line switching amount is packed with the form of GOOSE message.Simultaneously according to Ethernet 103
Agreement, packet is packed for Ethernet, serial communication by serial ports 103 agreement.
Above-mentioned communication interface includes: represents the superencipherment deciphering AES module of layer, is responsible for transmission and receives
Data carry out encryption and decryption, it is ensured that communication security；The MAC of data link layer；The PHY chip of physical layer
DP83849；The fiber optic data communication interface of ethernet communication interface RJ45-100 and 10Mbps/100Mbps
HFBR-5803.Communication is carried out with external equipment (such as reception, the analyzing device of digital transformer substation main website).
Concrete PHY chip DP83849 structure chart is as shown in Figure 3.
Above-mentioned Peripheral Interface includes UART interface, SPI interface and IIC interface；Above-mentioned UART interface
Support RS232 physical interface and/or RS485 physical interface, be used for receiving transmission IEC103 conventions data；
Above-mentioned SPI interface and IIC interface are expanded function interface, for connecting the equipment of outside.
A kind of power system of data acquisition supporting IEC61850 agreement disclosed above and transmission SOC(system on a chip)
Normal operation Step as follows:
S1, this SOC(system on a chip) is installed at Data Source.The voltage of transformer substation voltage transformer secondary side is believed
Number, Current Transformer Secondary side electric current, wind speed (to) voltage signal of sensor, the voltage of baroceptor
Signal is transformed in analog voltage input range (+/-10V or +/-5V), receives analog acquisition interface
6 paths (AD_V1～AD_V6 in Fig. 2).By Ethernet interface and/or optical fiber interface by described
SOC(system on a chip) interconnects with Ethernet or optical networking.By power module to chip power supply.
S2, download corresponding program to the ARM926 processor of data processing module, adopt carrying out AD
Collection, data inside chips flow control, and the IEC61850 protocol packing of data and Ethernet send, concrete mistake
Journey is as shown in the flow chart in Fig. 4；Open SOC(system on a chip), be acquired transmission.
S3, by reception equipment (can be same SOC(system on a chip), PC etc.) access network based on ethernet, download
Corresponding analysis program, it is achieved the parsing to accepted packet.
S4, reception equipment is connected with display device, can by the electric current collected, voltage, wind direction (fast),
Air pressure, etc. data show in real time.
In sum, a kind of power system of data acquisition supporting IEC61850 agreement that the present embodiment provides
The analogue signal abundant with transmission system on chip, digital signal acquiring interface, wired peripheral interface and
Data communication interface, and efficient data processor.Can realize system operation data, such as digitized are become
The signals collecting of the intelligent primary equipment in power station, and be packaged as data supporting IEC61850, Ethernet
103, the form of serial ports 103 communications protocol, is communicated by Ethernet, fiber optic communication.Integrated level is high,
Volume is little, it is easy to installation and debugging, supports digital transformer substation communication criterion, it is not necessary to external protocol converter,
Reduce cost.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-mentioned reality
Execute the restriction of example, the change made under other any spirit without departing from the present invention and principle, modification,
Substitute, combine, simplify, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. support power system of data acquisition and a transmission SOC(system on a chip), its feature of IEC61850 agreement
It is, described system on chip data acquisition interface, data processing module, communication interface, Peripheral Interface；
Wherein, described data acquisition interface includes analog acquisition mouth ADC and digital data acquisition mouth GPIO, real
Now to digital quantity and the collection of analog quantity；
Described data processing module is embedded into the FPGA of ARM926, it is achieved described SOC(system on a chip) data flow con-trol
And communication protocol conversion；
Described communication interface include being integrated in inside the AES superencipherment module representing layer being sequentially connected with,
The MAC of data link layer, the PHY chip of physical layer and Ethernet interface and optical fiber interface, count
According to communication transfer；
Described Peripheral Interface includes UART, IC, SPI, is responsible for carrying out communication and system with external equipment
Function debugging；
Described data processing module is respectively with described data acquisition interface, communication interface and Peripheral Interface even
Connect.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that described analog acquisition interface uses 16 analog-digital converters
AD7656, supports 6 tunnel analogue signal inputs；Described digital collection interface uses 32 GPIO mouths.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that the analog quantity of described analog acquisition interface collection be substation PT,
The voltage of CT secondary side, current signal, and by air pressure, wind speed, the telecommunications of wind transducer conversion
Number, enter AD7656 chip by analogue signal input port, be converted to SOC(system on a chip) accessible numeral letter
Number.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that the digital quantity of described digital collection interface collection is line switching state,
Being connected with GPIO mouth, ARM chip can obtain line switching state by reading GPIO mouth level state.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 2 with
Transmission SOC(system on a chip), it is characterised in that the sample frequency of described analog-digital converter AD7656 is set to: 5k,
32k, 64k or 96k, conversion accuracy is 16, and its data transfer mode is set to MCU transmission or DMA
Mode is transmitted.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that described data processing module is the ARM926's of embedded 32
FPGA, is responsible for data biography between acquisition interface, data processing module, Peripheral Interface and communication interface
Defeated, and carry out stipulations conversion to signal collected, pack the data to meet IEC61850 agreement, string
Mouth 103 agreements, the packet of Ethernet 103 agreement, support the communication of digital transformer substation.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that the chip program of the FPGA of described ARM926 develops ring at Keil4
Write under border, including: AD collection converse routine, stipulations converse routine, Ethernet router, serial ports are sent out
Sending program, wherein AD conversion supports MCU or dma mode, and stipulations converse routine is according to IEC61850-9-2
Standard is developed.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 7 with
Transmission SOC(system on a chip), it is characterised in that
Described stipulations converse routine realizes converting the data into the packet meeting IEC61850 consensus standard,
Voltage, the magnitude of current are packed with SV message form, and line switching amount is carried out with the form of GOOSE message
Packing；Simultaneously according to Ethernet 103 agreement, serial ports 103 agreement packet is packed for Ethernet,
Serial communication.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1 with
Transmission SOC(system on a chip), it is characterised in that
Described superencipherment deciphering AES module is for carrying out encryption and decryption to transmission and reception data, it is ensured that communication
Safety；
Described PHY chip is DP83849 chip；
Described Ethernet interface is ethernet communication interface RJ45-100, and described optical fiber interface is
The fiber optic data communication interface HFBR-5803 of 10Mbps/100Mbps, described Ethernet interface and optical fiber interface realize
Communication is carried out with the outside reception of digital transformer substation main website, analyzing device.
A kind of power system of data acquisition supporting IEC61850 agreement the most according to claim 1
With transmission SOC(system on a chip), it is characterised in that
Described UART interface supports RS232 physical interface and/or RS485 physical interface, described SPI interface
Being expanded function interface with IIC interface, three all can be as communication and function debugging interface.
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| CN106199126A (en) * | 2016-08-31 | 2016-12-07 | 山东电力设备有限公司 | A kind of highly reliable low time delay all-fiber current transformator |
| CN108022422A (en) * | 2017-12-29 | 2018-05-11 | 国网浙江建德市供电有限公司 | A kind of safe power station information acquisition system |
| CN108490380A (en) * | 2018-04-16 | 2018-09-04 | 三峡大学 | A kind of voltage current transformer on-line testing system |
| CN110276203A (en) * | 2019-05-15 | 2019-09-24 | 国家电网有限公司 | Encryption method, device and the storage medium of electric power system control protective program |
| CN110798217A (en) * | 2019-11-15 | 2020-02-14 | 广州健飞通信有限公司 | Integrated module integration input system for field programmable gate array |
| CN110837337A (en) * | 2019-11-15 | 2020-02-25 | 广州健飞通信有限公司 | Acquisition module integration input system |
| CN112486059A (en) * | 2020-11-18 | 2021-03-12 | 厦门物之联智能科技有限公司 | Data acquisition expansion control system and data acquisition method thereof |
| CN115623092A (en) * | 2022-12-19 | 2023-01-17 | 北京安帝科技有限公司 | System monitoring method, device, equipment and medium based on electric signals |
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| CN108490380A (en) * | 2018-04-16 | 2018-09-04 | 三峡大学 | A kind of voltage current transformer on-line testing system |
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| CN115623092A (en) * | 2022-12-19 | 2023-01-17 | 北京安帝科技有限公司 | System monitoring method, device, equipment and medium based on electric signals |
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