CN104090257A - Electronic instrument transformer wireless checking system - Google Patents
Electronic instrument transformer wireless checking system Download PDFInfo
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- CN104090257A CN104090257A CN201410336503.6A CN201410336503A CN104090257A CN 104090257 A CN104090257 A CN 104090257A CN 201410336503 A CN201410336503 A CN 201410336503A CN 104090257 A CN104090257 A CN 104090257A
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Abstract
The invention relates to an electronic instrument transformer wireless checking system. The electronic instrument transformer wireless checking system comprises an electronic instrument transformer checking machine and a merging unit and further comprises a sampling value and precise clock wireless transmitting device based on IEC61850 and a sampling value and precise clock wireless receiving device based on IEC61850, wherein the sampling value and precise clock wireless transmitting device based on IEC61850 and the sampling value and precise clock wireless receiving device based on IEC61850 are respectively composed of a blackfin DSP BF518 module and the sampling value and precise clock wireless receiving device based on IEC61850 and the sampling value and precise clock wireless transmitting device based on IEC61850 are in wireless signal communication. Under the time condition that time is synchronous (asynchronous), the requirements of transmission bandwidths and channels of wireless transmitting are met; particularly, after disturbance and frequency hopping, IEEE1588 can be automatically identified and corrected to improve the successful transmission rate of a data package, and the electronic instrument transformer wireless checking system is suitable for a field test of an electronic instrument transformer under various synchronous protocols, suitable for electromagnetic instrument transformer checking machines of all factories and capable of improving the field test efficiency of the electronic instrument transformer.
Description
Technical field
The present invention relates to the wireless check system of a kind of electronic mutual inductor.
Background technology
At present, electronic mutual inductor is widely used in intelligent substation, before putting equipment in service, must carry out comprehensive detection to electronic mutual inductor actual performance and error characteristics, to ensure the reliable true(-)running of intelligent substation.Along with digital intelligent technology development, the thing followed is the rolling up of field-checking workload of electronic mutual inductor, but electronic mutual inductor field-checking is different from traditional transducer check, signal of simulation and a digital signal (Optical Fiber Transmission) on locus not necessarily together with (mainly for electrical outdoor minor mutual inductor), particularly for not needing local mounted merge cells site environment, distance likely reaches 50～500 meters or longer, when test, need artificial pulling measuring fiber, consider that testing ground environmental facies are to badly, measuring fiber pulling is easily damaged.
Summary of the invention
The object of the present invention is to provide the wireless check system of a kind of electronic mutual inductor, solving existing electronic mutual inductor cannot be to the problem that merge cells does not carry out quick verification on the spot of remote installation.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: a kind of electronic mutual inductor is wireless calibration system, comprise electronic transducer calibration instrument and merge cells, also comprise it being all the sampled value based on IEC61850 and precision interval clock radio receiver and the sampled value based on IEC61850 and the precision interval clock wireless relay devices by blackfin DSP BF518 module composition, described sampled value based on IEC61850 and precision interval clock radio receiver are configured in the data receiver mouth of described electronic transducer calibration instrument, described sampled value based on IEC61850 and precision interval clock wireless relay device are configured in the data output of described merge cells, the described sampled value based on IEC61850 and precision interval clock radio receiver and described sampled value based on IEC61850 are connected by communicating wireless signals with precision interval clock wireless relay device.
Compared with prior art, the invention has the beneficial effects as follows: under the time conditions of time synchronized (asynchronous), meet wireless forwarding transmission bandwidth and passage requirement, wireless transmission process can be used custom protocol and compression algorithm to reduce to data per second, after disturbance and frequency hopping, can automatically identify especially and correct to improve packet success transfer rate for IEEE1588, be applicable to the field-checking of electronic mutual inductor under multiple synchronization agreement, adapt to the electronic transducer calibration instrument of all producers, improved electronic mutual inductor site test efficiency.
Brief description of the drawings
Fig. 1 is the signal Principle of Communication figure of the wireless check system of electronic mutual inductor of the present invention.
Fig. 2 is wireless relay device theory structure schematic diagram of the present invention.
Fig. 3 is that the present invention adopts station internal clock to realize wireless verification schematic diagram.
Fig. 4 is that the self-built clock of tester of the present invention is realized wireless verification schematic diagram.
Fig. 5 is that the present invention appends clock markers and realizes wireless verification schematic diagram.
In figure, SV-sampled value; The kind of PPS, IRIG-B, IEEE 1588-synchronous protocol.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows an embodiment of the wireless calibration system of a kind of electronic mutual inductor of the present invention: a kind of electronic mutual inductor is wireless calibration system, comprise electronic transducer calibration instrument and merge cells, also comprise it being all the sampled value based on IEC61850 and precision interval clock radio receiver and the sampled value based on IEC61850 and the precision interval clock wireless relay devices by blackfin DSP BF518 module composition, described sampled value based on IEC61850 and precision interval clock radio receiver are configured in the data receiver mouth of described electronic transducer calibration instrument, described sampled value based on IEC61850 and precision interval clock wireless relay device are configured in the data output of described merge cells, the described sampled value based on IEC61850 and precision interval clock radio receiver and described sampled value based on IEC61850 are connected with precision interval clock wireless relay device communicating wireless signals.
The present invention can be directly sends synchronizing signal and sampled value signal at merge cells place by IEC61850 data and precision interval clock wireless relay device, reduces by IEC61850 data and precision interval clock wireless relay device reception synchronizing signal and sampled value signal in tester distally.
As shown in Figure 2, the acp chip of IEC61850 data and precision interval clock wireless relay device is blackfin DSP BF518 module, and the standards such as its Embedded eMAC and IEEE1588 are completely compatible.Sampled value and the synchronizing signal of merge cells output are inputted this module simultaneously, after compiling, automatically send (reception) Ethernet data by DMA, communicate by letter with wireless router, the sampled value of sampled value based on IEC61850 or FT3 (SV) can be forwarded or received reduction by wireless local net, pass-through mode can be set to transparent transmission or protocol forward, and can accurately carry out wireless transmission to synchronizing signal, for the merge cells without synchronizing signal, use interpolation algorithm to make it to support the transmission of SV markers, also can reach the object of wireless verification.
Fig. 3 shows an embodiment of the wireless calibration system of a kind of electronic mutual inductor of the present invention, adopt Substation Station internal clocking, use the PPS/IRIG_B method of synchronization, send synchronizing signal and sampled value signal by wireless relay device, receive synchronizing signal in tester distally by radio receiver and sampled value signal reduces, communication mode is wireless WIFI transmission.
Fig. 4 shows an embodiment of the wireless calibration system of a kind of electronic mutual inductor of the present invention, this scheme is used PPS/IRIG_B synchronously or SV+IEEE1588 mode, send synchronizing signal by the self-built clock of tester, wireless relay device sends synchronizing signal and sampled value signal, receive synchronizing signal and sampled value signal in tester distally by radio receiver, communication mode is wireless WIFI transmission.
Fig. 5 shows an embodiment of the wireless calibration system of a kind of electronic mutual inductor of the present invention, this scheme is for without system synchronization signal, use asynchronous mode, append markers on data and Ethernet by hardware, then calibrate by difference arithmetic, wireless relay device and wireless transmitter are by wireless connections.
Described blackfin DSP BF518 module, have the superpower data-handling capacity of DSP and the risc microcontroller advantage for system control concurrently, each processing unit possesses high clock rate and low-power consumption, not only have the computing power of the two DSP of 400MSPS, Resources on Chip is very abundant simultaneously, extend out peripheral hardware considerably less, be beneficial to simplified design.The most important thing is that BF518 possesses powerful EMAC and very flexile PTP module, and multiple DMA passages on sheet, can pass through DMA automatic transceiving Ethernet data, do not consume cpu resource, and can stamp hardware markers for the agreement of PTP (IEC1588), also can stamp hardware markers for common ethernet frame.PTP module is supported wireless WLAN and is supported UDP/IP/MAC agreement, and support IEEE1588V1 and IEEE1588V2, uses the most applicable Application and Development of the present invention of this chip block.
Claims (1)
1. the wireless check system of electronic mutual inductor, comprise electronic transducer calibration instrument and merge cells, it is characterized in that: also comprise it being all the sampled value based on IEC61850 and precision interval clock wireless relay device and the sampled value based on IEC61850 and the precision interval clock radio receivers by blackfin DSP BF518 module composition, described sampled value based on IEC61850 and precision interval clock radio receiver are configured in the data receiver mouth of described electronic transducer calibration instrument, described sampled value based on IEC61850 and precision interval clock wireless relay device are configured in the data output of described merge cells, the described sampled value based on IEC61850 and precision interval clock radio receiver and described sampled value based on IEC61850 are connected by communicating wireless signals with precision interval clock wireless relay device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410336503.6A CN104090257A (en) | 2014-07-15 | 2014-07-15 | Electronic instrument transformer wireless checking system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410336503.6A CN104090257A (en) | 2014-07-15 | 2014-07-15 | Electronic instrument transformer wireless checking system |
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| CN104090257A true CN104090257A (en) | 2014-10-08 |
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| CN102130501A (en) * | 2011-01-19 | 2011-07-20 | 四川电力科学研究院 | Wireless synchronous data acquisition device for checking direct current transformer of direct current converter station |
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