CN107025350B - Digital sampling value playback method - Google Patents
Digital sampling value playback method Download PDFInfo
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- CN107025350B CN107025350B CN201710232969.5A CN201710232969A CN107025350B CN 107025350 B CN107025350 B CN 107025350B CN 201710232969 A CN201710232969 A CN 201710232969A CN 107025350 B CN107025350 B CN 107025350B
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Abstract
According to the digital sampling value playback method, a background processing device is arranged to send acquired digital sampling value data information and digital sampling value configuration information to a front-end processor, and the front-end processor sends the received digital sampling value data information and digital sampling value configuration information to a device to be tested, so that playback of a digital sampling value is achieved. The digital sampling value playback method can acquire a data segment specified by a user from COMTRADE or PCAP, generate simulation data by using simulation tools such as MATLAB and the like, can randomly adjust the data transmission time, and supports the output of the digital sampling value data in SV or FT3 format. Meanwhile, the testing capability and the testing efficiency can be greatly improved, the use cost of manpower is reduced, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of digital information playback processing, in particular to a digital sampling value playback method.
Background
The digital sampling value is a main transmission form of the power grid operation data of the intelligent substation and is also a core technology of the digital substation, common transmission formats of the digital sampling value of the intelligent substation are SV and FT3, and common data file formats are COMTRADE and PCAP. Through the playback of the digital sampling value, various states of short circuit, overcurrent, undervoltage, dead zones, oscillation, harmonic waves and the like of a power grid line can be simulated, the processing capacity of devices such as a relay protection device, a measurement and control device and the like at the rear end on power grid faults is investigated, and safe operation, driving and protection of a power grid are realized.
At present, the playback method of the digital sampling value mainly comprises two methods: one is to utilize a relay protection tester to read a COMTRADE data file and replay SV sampling value messages to a receiving device by setting SV sampling value format configuration information. And the other method is to directly play back the SV sampling value message in the PCAP file to the receiving device by utilizing an Ethernet data playback tool.
The existing playback method directly plays back original sampling data files, cannot adjust data sending time or select partial data from the original sampling data files for playback, and only supports SV sampling value formats in playback output formats.
Therefore, it is necessary to provide a method for replaying digital sampling values to solve the deficiencies of the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides a digital sampling value playback method, which can acquire a data segment specified by a user from COMTRADE or PCAP, generate simulation data by using simulation tools such as MATLAB and the like, can randomly adjust the data transmission time and support the output of the digital sampling value data in SV or FT3 format. Meanwhile, the testing capability and the testing efficiency can be greatly improved, the use cost of manpower is reduced, and the working efficiency is improved.
The above object of the present invention is achieved by the following technical means.
The method comprises the steps that a background processing device for acquiring digital sampling value data information and digital sampling value configuration information is arranged, the background processing device sends the acquired digital sampling value data information and the acquired digital sampling value configuration information to a front-end processor, and the front-end processor sends the received digital sampling value data information and the received digital sampling value configuration information to a device to be tested, so that the digital sampling value is played back.
Specifically, the playback of the digital sample values comprises the following specific steps:
l1, acquiring the configuration information of the digital sampling value in a background processing device;
l2, generating the digital sampled value data information in a background processing device;
l3, the background processing device sends the configuration information of the digital sampling value and the data information of the digital sampling value to the internal storage of the front-end processor to be sent;
and L4, the background processing device sends a starting command, and the front-end processor sends the configuration information of the digital sampling value and the data information of the digital sampling value to the tested device to realize playback.
Preferably, the sampling value configuration information is obtained by a user through self-defining setting by a background processing device, and includes SV configuration information and FT3 configuration information.
Specifically, the SV configuration information includes destination MAC information, APPID information, SVID information, first channel number information, and first nominal delay information.
Further, the FT3 configuration information includes FT3 frame type, baud rate, second nominal latency, second channel number information, and second channel type information.
Further, the digital sampling value data information comprises the relative transmission time of each frame of data and the instantaneous value of each sampling value channel.
Preferably, the background processing device generates the digital sampling value data information by the following steps:
LA21, import COMTRADE or PCAP file, choose the data start-stop time that is played back;
LA22, setting the mapping relation between the data channel of COMTRADE or PCAP and the played back SV, FT3 sampling value.
LA23, generating digital sample value data information in CSV format.
Further, the simulation tool generates the sampling value data information by the following steps:
LB21, using MATLAB simulation tool to generate and derive sampling value data information;
LB22 generates digital sample value data information in CSV format by a CSV file editing tool. .
Specifically, the background processing device sends the configuration information of the digital sampling value and the data information of the digital sampling value to an internal storage of the front-end processor in an FTP manner through an FTP file uploading module.
Preferably, the background processing device is provided with an FT3 sending control module, and the FT3 sending control module controls an SV/FT3 sending module inside the front-end processor to send the digital sampling value configuration information and the digital sampling value data information to the device under test.
The invention can acquire the data segment specified by the user from COMTRADE or PCAP, generate simulation data by using simulation tools such as MATLAB and the like, can randomly adjust the data sending time and support the output of the digital sampling value data in SV or FT3 format. Meanwhile, the testing capability and the testing efficiency can be greatly improved, the use cost of manpower is reduced, and the working efficiency is improved.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a system block diagram of a digital sample value playback method of the present invention.
Detailed Description
The invention is further described with reference to the following examples.
Example 1.
As shown in fig. 1, a digital sampling value playback method is provided with a background processing device that acquires digital sampling value data information and digital sampling value configuration information, where the background processing device sends the acquired digital sampling value data information and digital sampling value configuration information to a front-end processor, and the front-end processor sends the received digital sampling value data information and digital sampling value configuration information to a device under test, so as to realize playback of a digital sampling value.
The playback of the digital sampling value comprises the following specific steps:
l1, obtaining the configuration information of the digital sampling value in the background processing device.
L2, generating the digital sample data information in a background processing device.
And L3, the background processing device sends the configuration information of the digital sampling value and the data information of the digital sampling value to the internal storage of the front-end processor to be sent.
And L4, the background processing device sends a starting command, and the front-end processor sends the configuration information of the digital sampling value and the data information of the digital sampling value to the tested device to realize playback.
The sampling value configuration information is obtained by user-defined setting through a background processing device, and comprises SV configuration information and FT3 configuration information.
The SV configuration information comprises destination MAC information, APPID information, SVID information, first channel number information and first rated time delay information.
The FT3 configuration information comprises FT3 frame type, baud rate, second rated time delay, second channel number information and second channel type information.
The digital sample data information comprises the relative transmission time of each frame of data and the instantaneous value of each sample channel.
The background processing device generates the digital sampling value data information according to the following steps:
LA21, import COMTRADE or PCAP file, select start and end times of data played back.
LA22, setting the mapping relation between the data channel of COMTRADE or PCAP and the played back SV, FT3 sampling value.
LA23, generating digital sample value data information in CSV format.
And the background processing device sends the digital sampling value configuration information and the digital sampling value data information to an internal storage of a front-end processor in an FTP mode through an FTP file uploading module.
The background processing device is provided with an FT3 sending control module, and the FT3 sending control module controls an SV/FT3 sending module in the front-end processor to send digital sampling value configuration information and digital sampling value data information to a tested device.
In this embodiment, the background processing apparatus may be implemented by software, a chip having a corresponding function, or a chip with a function matching the device.
The digital sampling value playback method can acquire a data segment specified by a user from COMTRADE or PCAP, generate simulation data by using simulation tools such as MATLAB and the like, can randomly adjust the data transmission time, and supports the output of the digital sampling value data in SV or FT3 format. Meanwhile, the testing capability and the testing efficiency can be greatly improved, the use cost of manpower is reduced, and the working efficiency is improved.
Example 2.
A digital sample value playback method, the other features being the same as those of embodiment 1, except that: the simulation tool generates the sampling value data information by the following steps:
LB21, using MATLAB simulation tools, generates and derives sampled value data information.
LB22 generates digital sample value data information in CSV format by a CSV file editing tool.
It should be noted that, the sampling value data information is generated by using the simulation tool, and the user-defined setting can be performed according to the user's own requirements, so that the content of the sampling value data information is compiled, and then the compiled sampling value data information is led into a file in a CSV format, so that the use better conforms to the user-defined setting, and the generation and the export of the sampling value data information are facilitated.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A method for playback of digital sample values, characterized by: the device is provided with a background processing device for acquiring digital sampling value data information and digital sampling value configuration information, wherein the background processing device transmits the acquired digital sampling value data information and digital sampling value configuration information to a front-end processor, and the front-end processor transmits the received digital sampling value data information and digital sampling value configuration information to a device to be tested to realize playback of the digital sampling value;
the sampling value configuration information is obtained by user-defined setting through a background processing device, and comprises SV configuration information and FT3 configuration information;
the background processing device generates the digital sampling value data information according to the following steps:
LA21, import COMTRADE or PCAP file, choose the data start-stop time that is played back;
LA22, setting the mapping relation between the COMTRADE or PCAP data channel and the played SV, FT3 sampling value data channel;
LA23, generating digital sample value data information in CSV format.
2. A method of replaying digital sample values according to claim 1, characterized in that: the playback of the digital sampling value comprises the following specific steps:
l1, acquiring the configuration information of the digital sampling value in a background processing device;
l2, generating the digital sampled value data information in a background processing device;
l3, the background processing device sends the configuration information of the digital sampling value and the data information of the digital sampling value to the internal storage of the front-end processor to be sent;
and L4, the background processing device sends a starting command, and the front-end processor sends the configuration information of the digital sampling value and the data information of the digital sampling value to the tested device to realize playback.
3. A method of replaying digital sample values according to claim 1, characterized in that: the SV configuration information comprises destination MAC information, APPID information, SVID information, first channel number information and first rated time delay information.
4. A method of replaying digital sample values according to claim 1, characterized in that: the FT3 configuration information comprises FT3 frame type, baud rate, second rated time delay, second channel number information and second channel type information.
5. A method of replaying digital sample values according to claim 1, characterized in that: the digital sample data information comprises the relative transmission time of each frame of data and the instantaneous value of each sample channel.
6. A method of replaying digital sample values according to claim 5, characterized in that: the simulation tool generates the sampling value data information by the following steps:
LB21, using MATLAB simulation tool to generate and derive sampling value data information;
LB22 generates digital sample value data information in CSV format by a CSV file editing tool.
7. A method of replaying digital sample values according to claim 2, characterized in that: and the background processing device sends the digital sampling value configuration information and the digital sampling value data information to an internal storage of a front-end processor in an FTP mode through an FTP file uploading module.
8. A method of replaying digital sample values according to claim 2, characterized in that: the background processing device is provided with an FT3 sending control module, and the FT3 sending control module controls an SV/FT3 sending module in the front-end processor to send digital sampling value configuration information and digital sampling value data information to a tested device.
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| CN108536759B (en) * | 2018-03-20 | 2020-08-04 | 阿里巴巴集团控股有限公司 | Sample playback data access method and device |
| CN110346746A (en) * | 2019-06-06 | 2019-10-18 | 许昌开普检测研究院股份有限公司 | Digital combining unit accuracy closed loop test method and system |
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| CN101247039A (en) * | 2007-12-14 | 2008-08-20 | 南方电网技术研究中心 | Method for power system wave record playback based on real-time simulation system |
| CN104036070A (en) * | 2014-05-19 | 2014-09-10 | 国家电网公司 | Digitized recording playback method |
| CN104901706A (en) * | 2015-06-08 | 2015-09-09 | 南京灿能电力自动化有限公司 | Digital electric energy quality monitoring terminal monitoring device and data converting method thereof |
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| US20140163940A1 (en) * | 2012-12-11 | 2014-06-12 | David E. Erisman | Method and system for modeling rf emissions occurring in a radio frequency band |
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| US5486929A (en) * | 1993-09-03 | 1996-01-23 | Apple Computer, Inc. | Time division multiplexed video recording and playback system |
| CN101247039A (en) * | 2007-12-14 | 2008-08-20 | 南方电网技术研究中心 | Method for power system wave record playback based on real-time simulation system |
| CN104036070A (en) * | 2014-05-19 | 2014-09-10 | 国家电网公司 | Digitized recording playback method |
| CN104901706A (en) * | 2015-06-08 | 2015-09-09 | 南京灿能电力自动化有限公司 | Digital electric energy quality monitoring terminal monitoring device and data converting method thereof |
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Inventor after: Zheng Peng Inventor after: Huang Yan Inventor after: Yu Tongwei Inventor after: Zhang Wuyang Inventor after: Li Ziliang Inventor after: Lu Yan Inventor after: He Chun Inventor after: Ren Chunmei Inventor after: Chen Guanghua Inventor after: Yin Qingwei Inventor after: Wang Pengfei Inventor after: Li Weidong Inventor after: Li Xiang Inventor after: Liu Desen Inventor before: Zheng Peng Inventor before: Huang Yan Inventor before: He Chun Inventor before: Ren Chunmei Inventor before: Chen Guanghua Inventor before: Yin Qingwei Inventor before: Wang Pengfei Inventor before: Li Weidong Inventor before: Li Xiang Inventor before: Liu Desen |
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