CN106200413A - Electro-magnetic transient Real-time Communications method and apparatus based on Aurora agreement - Google Patents

Abstract

Electro-magnetic transient Real-time Communications method and apparatus based on Aurora agreement, including physical layer communication and functional layer communication；Wherein, physical layer communication method includes the high speed Aurora communications protocol form determining FPGA electro-magnetic transient real-time simulation；Dynamic binding monopolizes port；Functional layer communication includes the data block formulating addressing continuously；Directly access the BlOCK RAM of FPGA；It is applicable to the application scenarios of FPGA electromagnetic transient simulation, to being optimized of the length of a Frame, substantially increases communication efficiency, add transmission bandwidth and the stability of data transmission.

Description

Electro-magnetic transient Real-time Communications method and apparatus based on Aurora agreement

Technical field

The present invention relates to a kind of emulation means of communication and device, be specifically related to electro-magnetic transient real-time simulation based on Aurora agreement and lead to Communication method and device.

Background technology

Seriality due to Operation of Electric Systems, it is desirable to all power system devices carry out complete test before operation and could access System；Testing results environment cannot be provided not yet for the equipment accessed.

And power system real time data display can the various operating conditions of real-time Simulation power system, repeatability is strong, available In various tests and the operational monitoring of power system device, and it is applied widely.

Little step-length analogue system based on FPGA is simplified to ripe electromagnetic transient simulation system on fpga chip run so that be System simulation capacity is greatly promoted；Meanwhile, along with the lifting of the calculating frequency of fpga chip, the simulation step length of electro-magnetic transient rises to 1 The emulation yardstick that microsecond is the least, various operating conditions and transient response for accurately simulation power system provide possibility.

FPGA electromagnetic transient simulation precision needs to carry out double-precision floating point computing, and the Floating-point Computation of relative double precision 64 is to FPGA Calculating and the space of storage have higher requirement.The most state-of-the-art FPGA is the FPGA of the V7 series of Xilinx, As a example by XC7V690T, it contains 477,760 (Logical Cell Block), the memory space of 34,380kb, 1920 DSP computing unit.The advantage of FPGA is to calculate DSP and Logical Cell, and the memory space of its about 34MB limits simultaneously The computing function of FPGA.

For the resource limit of FPGA, preferable solution is to use server rear platform support.It is through clothes specifically The expandable resource of business device platform, it is achieved the rapid data of FPGA emulation is mutual, data process and data storage.

This rear platform support scheme needs to provide the data communication scheme of high bandwidth.The number of the data volume of bandwidth and transmission Relation must is fulfilled for below equation:

$n=\mathrm{P\Δt}\frac{1}{\mathrm{DL}}$

In above formula, P represents that bandwidth, DL represent data length, and the data length of double-precision floating points is 64.Δ t represents FPGA Simulation step length.

But Conventional communication protocol scheme of based on TCP/IP only supports to carry a width of 1000Mb/s, bandwidth and postponing and unstable, special It not when the yardstick that the computer sim-ulation step-length of FPGA drops to 1-2 microsecond is even lower, not only cannot meet FPGA platform emulation need Want；And the high speed communication scheme for other there is also bandwidth restriction and the deficiency of transmission stability.

Summary of the invention

For the deficiencies in the prior art, the present invention proposes electro-magnetic transient Real-time Communications method and apparatus based on Aurora agreement, Be respectively directed to physical layer communication communicate with functional layer formulation communication scheme, efficiently solve Communication, add transmission bandwidth and The stability of data transmission.

It is an object of the invention to use following technical proposals to realize:

Electro-magnetic transient Real-time Communications method based on Aurora agreement, is made up of physical layer communication and functional layer communication；

Described physical layer communication comprises determining that the high speed Aurora communications protocol form of FPGA electro-magnetic transient real-time simulation；

Dynamic binding monopolizes port；

Described functional layer communication includes: formulate the data block of addressing continuously；

Directly access the BlOCK RAM of FPGA.

Preferably, described high speed Aurora communications protocol form includes, optical-fibre communications Frame effectively identify position be 32, Reserved bit is 16, effective length flag bit is 16, timestamp is that 64 and valid data are less than 2000.

Preferably, described dynamic binding is monopolized port and is included, arbitrary core process of CPU is tied on fiber port, passes through DMA Map and optical-fibre communications data are transferred in DMA address space.

Preferably, described data block includes initial address, data type, valid data length and packing manner.

Further, described data block is deposited in FPGA internal memory continuously, by optical-fibre channel, fiber port is directly controlled always Line.

Electro-magnetic transient Real-time Communications device based on Aurora agreement, described system includes, the first communication module and second leads to News module；

Wherein, described first communication module for determine FPGA electro-magnetic transient real-time simulation high speed Aurora communications protocol form and Dynamic binding monopolizes port；

Described second communication module is for formulating the data block of addressing continuously, and directly accesses the BlOCK RAM of FPGA.

Preferably, described first communication module includes, the first communication unit, for the position that effectively identifies of optical-fibre communications Frame is 32, reserved bit be 16, effective length flag bit be 16, timestamp be that 64 and valid data are less than 2000.

Preferably, described first communication module also includes, the second communication unit, for arbitrary core process of CPU is tied to optical fiber On port, by DMA map, optical-fibre communications data are transferred in DMA address space.

Preferably, described second communication module includes, third communication unit, for data block is deposited in FPGA internal memory continuously, Fiber port is made directly to control bus by optical-fibre channel.

With immediate prior art ratio, the present invention reaches to provide the benefit that:

1. the present invention is for physical layer communication technology, it is provided that be suitable for FPGA electro-magnetic transient real-time simulation based on high speed Aurora The physical layer communication agreement of communications protocol；Its communications protocol simplifies interruption and the operation of response, uses passage to monopolize formula point-to-point Communication scheme, simplifies data form, is defaulted as 16 shaping number transmission；Devise the frame format structure of uniqueness, it is adaptable to The application scenarios of FPGA electromagnetic transient simulation, to being optimized of the length of a Frame, substantially increases communication efficiency.

Mechanics of communication for physical layer develops real-time calling mechanism, uses efficient binding formula communication method of calling, in service In device running, bind dynamically, unbind optical-fibre channel, effectively avoid owing to taking of cpu process causes with locked The disruption of real-time communication.

2. for functional layer mechanics of communication, invention defines the data block means of communication so that communications protocol is directly selected by address Location, in the memory block of FPGA, is the very efficient access mode of one.

Accompanying drawing explanation

Fig. 1 be Aurora agreement electro-magnetic transient Real-time Communications in physical layer communication method flow diagram；

Fig. 2 be Aurora agreement electro-magnetic transient Real-time Communications in functional layer means of communication flow chart；

Fig. 3 is the data communication frame structure schematic diagram of FPGA electro-magnetic transient real-time simulation.

Detailed description of the invention

Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.

Shown in Fig. 1 and Fig. 2, electro-magnetic transient Real-time Communications method based on Aurora agreement, by physical layer communication and Functional layer communication forms, and described physical layer communication comprises determining that the high speed Aurora communication association of FPGA electro-magnetic transient real-time simulation View form；

Dynamic binding monopolizes port；

Described functional layer communication includes: formulate the data block of addressing continuously；

Directly access the BlOCK RAM of FPGA.

Described high speed Aurora communications protocol form includes, optical-fibre communications Frame effectively identify position be 32, reserved bit be 16, effective length flag bit be 16, timestamp be that 64 and valid data are less than 2000.

Described dynamic binding is monopolized port and is included, arbitrary core process of CPU is tied on fiber port, will by DMA map Optical-fibre communications data are transferred in DMA address space.

Described data block includes initial address, data type, valid data length and packing manner.

As it is shown on figure 3, described data block is deposited in FPGA internal memory continuously, by optical-fibre channel, fiber port is directly controlled Bus.

Electro-magnetic transient Real-time Communications device based on Aurora agreement, described device includes, the first communication module and second leads to News module；

Wherein, described first communication module is for determining the high speed Aurora communications protocol form of FPGA electro-magnetic transient real-time simulation Port is monopolized with dynamic binding；

Described second communication module is for formulating the data block of addressing continuously, and directly accesses the BlOCK RAM of FPGA.

Described first communication module includes, the first communication unit, is 32 for the effectively identification position of optical-fibre communications Frame, protects To stay position be 16, effective length flag bit is 16, timestamp is that 64 and valid data are less than 2000.

Described first communication module also includes, the second communication unit, for arbitrary core process of CPU is tied to fiber port, By DMA map, optical-fibre communications data are transferred in DMA address space.

Described second communication module includes, third communication unit, for depositing in FPGA internal memory continuously by data block, by light Fine passage makes fiber port directly control bus.

Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit, although reference The present invention has been described in detail by above-described embodiment, those of ordinary skill in the field it is understood that still can to this Invention detailed description of the invention modify or equivalent, and without departing from spirit and scope of the invention any amendment or etc. With replacing, it all should be contained in the middle of scope of the presently claimed invention.

Claims (9)

1. electro-magnetic transient Real-time Communications method based on Aurora agreement, is made up of physical layer communication and functional layer communication, It is characterized in that,

Described physical layer communication comprises determining that the high speed Aurora communications protocol form of FPGA electro-magnetic transient real-time simulation；

Dynamic binding monopolizes port；

Described functional layer communication includes: formulate the data block of addressing continuously；

Directly access the BlOCK RAM of FPGA.

2. electro-magnetic transient Real-time Communications method based on Aurora agreement as claimed in claim 1, it is characterised in that Described high speed Aurora communications protocol form includes, optical-fibre communications Frame effectively identify position be 32, reserved bit be 16, Effective length flag bit is 16, timestamp is that 64 and valid data are less than 2000.

3. electro-magnetic transient Real-time Communications method based on Aurora agreement as claimed in claim 1, it is characterised in that Described dynamic binding is monopolized port and is included, is tied on fiber port, arbitrary core process of CPU by DMA map by optical fiber Communication data is transferred in DMA address space.

4. electro-magnetic transient Real-time Communications method based on Aurora agreement as claimed in claim 1, it is characterised in that Described data block includes initial address, data type, valid data length and packing manner.

5. electro-magnetic transient Real-time Communications method based on Aurora agreement as claimed in claim 4, it is characterised in that Described data block is deposited in FPGA internal memory continuously, makes fiber port directly control bus by optical-fibre channel.

6. electro-magnetic transient Real-time Communications device based on Aurora agreement, it is characterised in that described device includes, first leads to News module and the second communication module；

Wherein, described first communication module for determine FPGA electro-magnetic transient real-time simulation high speed Aurora communications protocol form and Dynamic binding monopolizes port；

Described second communication module is for formulating the data block of addressing continuously, and directly accesses the BlOCK RAM of FPGA.

7. electro-magnetic transient Real-time Communications device based on Aurora agreement as claimed in claim 6, it is characterised in that institute State first communication module to include, the first communication unit, for optical-fibre communications Frame effectively identify position be 32, reserved bit be 16, effective length flag bit be 16, timestamp be that 64 and valid data are less than 2000.

8. electro-magnetic transient Real-time Communications device based on Aurora agreement as claimed in claim 6, it is characterised in that institute State first communication module also to include, the second communication unit, for arbitrary core process of CPU is tied to fiber port, pass through DMA Map and optical-fibre communications data are transferred in DMA address space.

9. electro-magnetic transient Real-time Communications device based on Aurora agreement as claimed in claim 6, it is characterised in that described Second communication module includes, third communication unit, for data block being deposited in continuously in FPGA internal memory, is made by optical-fibre channel Obtain fiber port and directly control bus.