CN110505259B - Data processing method and device for intelligent substation - Google Patents
Data processing method and device for intelligent substation Download PDFInfo
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- CN110505259B CN110505259B CN201810474212.1A CN201810474212A CN110505259B CN 110505259 B CN110505259 B CN 110505259B CN 201810474212 A CN201810474212 A CN 201810474212A CN 110505259 B CN110505259 B CN 110505259B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0847—Transmission error
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/022—Capturing of monitoring data by sampling
- H04L43/024—Capturing of monitoring data by sampling by adaptive sampling
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- 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
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Abstract
The invention relates to a data processing method and a device of an intelligent substation, which simultaneously receive at least two data of SV data, contralateral data, analog quantity data and FT3 format data, process the contralateral data by adopting an optical difference communication module, perform data interpolation on the contralateral data, and frame the interpolated data according to a set frame format; the SV data is deframed by utilizing the calibration time of the opposite side data and stored in a data cache region, the SV data is subjected to data interpolation, and framing is carried out according to a set frame format; converting analog quantity data into messages through a conditioning circuit, storing the messages into a data cache region, and framing according to a set frame format; and receiving the FT3 format data by using a fiber optic receiver, decoding the FT3 format data, and framing according to the set frame format. The invention can process data of at least two formats simultaneously, and analyze, synchronize and frame the data, thereby solving the problem that the prior art can not process data of multiple formats simultaneously.
Description
Technical Field
The invention belongs to the technical field of data processing, and particularly relates to a data processing method and device for an intelligent substation.
Background
At present, a protection measurement and control device of a conventional transformer substation directly realizes acquisition of analog quantity data through an alternating current head of the protection measurement and control device. In an intelligent substation, a merging unit is configured to collect data. If the primary side is provided with a conventional mutual inductor, the merging unit is connected with the conventional mutual inductor through the collector; if the electronic transformer is configured on the primary side, the electronic transformer directly transmits data in the FT3 format to the merging unit, and finally the merging unit outputs SV data in the IEC 61850-9-2 format to the protection, measurement and control device, as shown in FIG. 1. Due to the configuration mode of the device, the number of the substation equipment is remarkably increased, and the reliability of the system is further reduced.
Disclosure of Invention
The invention aims to provide a data processing method and device for an intelligent substation, which are used for solving the problem that the prior art cannot process data in multiple formats simultaneously.
In order to solve the technical problem, the invention provides a data processing method of an intelligent substation, which comprises the following solving steps:
1) receiving data to be processed, wherein the data to be processed is at least two of SV data, contralateral data, analog quantity data and FT3 format data;
2) processing the opposite side data by adopting an optical difference communication module, performing data interpolation on the opposite side data, and framing the interpolated data according to a set frame format;
3) the SV data is unframed by utilizing the calibration time of the opposite side data and is stored in a data cache region, the SV data is subjected to data interpolation, and the interpolated data is framed according to a set frame format;
4) converting analog quantity data into messages through a conditioning circuit, storing the messages into a data cache region, and framing the messages according to a set frame format;
5) and receiving the FT3 format data by adopting an optical fiber receiver, decoding the FT3 format data, and framing the decoded data according to a set frame format.
The invention aims at the situations that the conventional mutual inductor outputs analog quantity data, the electronic mutual inductor outputs data in an FT3 format, other spaced sampling data outputs SV data in a 9-2 format and the opposite side outputs private protocol data of 24 points, and simultaneously, after the data in at least two formats are analyzed, synchronized, framed and the like, the processed data framed is subjected to corresponding protection/measurement and control, wave recording and output functions through a protection/control logic processing module, a wave recording logic processing module, a sending logic processing module and the like, and finally is output to other corresponding protection and control devices, wave recording and monitoring systems and the like.
Further, the opposite side data is opposite side data of the 24-point private convention data.
Further, when the data to be processed is SV data and contralateral data, performing data interpolation on the SV data and the contralateral data together, and framing according to a set frame format.
Further, step 5) further comprises time marking the frame header of the decoded data by using the time marking signal, and performing CRC check.
Further, step 4) also includes measuring the frequency of the conditioning circuit, adjusting the sampling interval according to the frequency, adjusting the sampling pulse when the sampling interval needs to be adjusted, and adjusting the conditioning circuit through ADC control.
In order to solve the technical problem, the invention further provides a data processing device of the intelligent substation, which comprises the following solutions:
the device at least comprises two of an SV data input interface, an opposite side data input interface, an analog quantity data input interface and an FT3 format data input interface, and also comprises a data processing module and a data output interface;
the data processing module is used for processing the contralateral data, performing data interpolation on the contralateral data, and framing the interpolated data according to a set frame format; the SV data are unframed in the calibration time of the side data and stored in a data cache region, the SV data are subjected to data interpolation, and the interpolated data are framed according to a set frame format; the analog quantity data is converted into a message through the conditioning circuit and is stored in the data cache region, and then framing is carried out according to a set frame format; the device is also used for receiving the FT3 format data, decoding the FT3 format data and framing the decoded data according to a set frame format;
and the data output interface is used for outputting the data processed by the data processing module.
Further, the opposite side data is opposite side data of the 24-point private convention data.
Further, when the received data to be processed are SV data and contralateral data, the data processing module is further configured to perform data interpolation on the SV data and the contralateral data together, and perform framing according to a set frame format.
Furthermore, the data processing module is further configured to mark a time stamp on a frame header of the decoded data by using the time stamp signal, and perform CRC check.
Furthermore, the data processing module is also used for measuring the frequency of the conditioning circuit, adjusting the sampling interval according to the frequency, adjusting the sampling pulse when the sampling interval needs to be adjusted, and adjusting the conditioning circuit through ADC control.
Drawings
Fig. 1 is a connection diagram of a protection measurement and control device and a transformer in an intelligent substation in the prior art;
FIG. 2 is a connection diagram of a data processing apparatus capable of accessing multi-format data according to the present invention;
fig. 3 is a flow chart of an implementation of a data processing module in the data processing apparatus of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The first embodiment is as follows:
the data processing method of the intelligent substation comprises the following steps:
1) receiving data to be processed, wherein the data to be processed is at least two of SV data, contralateral data, analog quantity data and FT3 format data;
2) processing the opposite side data by adopting an optical difference communication module, performing data interpolation on the opposite side data, and framing the interpolated data according to a set frame format;
3) the SV data is unframed by utilizing the calibration time of the opposite side data and is stored in a data cache region, the SV data is subjected to data interpolation, and the interpolated data is framed according to a set frame format;
4) converting analog quantity data into messages through a conditioning circuit, storing the messages into a data cache region, and framing the messages according to a set frame format;
5) and receiving the FT3 format data by adopting an optical fiber receiver, decoding the FT3 format data, and framing the decoded data according to a set frame format.
The invention can at least simultaneously process two data of SV data in a 9-2 format, private specification data of 24 points at the opposite side output, analog quantity data and FT3 format data of other interval sampling data output, and analyze, synchronize and frame the data, thereby solving the problem that the prior art can not process data in various formats simultaneously.
The invention can realize the access and unified processing of data in various formats such as analog quantity, FT3 format, 9-2 format and the like, and finally output data suitable for various applications of protection/measurement and control, wave recording and monitoring, can be used in two occasions of a conventional transformer substation and an intelligent transformer substation, can obviously reduce the number of transformer substation equipment, and simultaneously reduces the failure rate and improves the reliability of the system. The device has certain popularization and application value.
In order to ensure the accuracy and timeliness of data transmission, the method further comprises the steps of marking a time mark on a frame header of the decoded data by using the time mark signal, and performing CRC (cyclic redundancy check) check. In order to adjust the sampling interval conveniently, the sampling interval is adjusted through hardware frequency measurement, when the sampling interval needs to be adjusted, sampling pulses are adjusted, and the adjusting circuit is adjusted through ADC control.
Based on the data processing method, the invention further provides a data processing device of the intelligent substation, which comprises an input interface for receiving the data to be processed, wherein the input interface for receiving the data to be processed at least comprises two of an SV data input interface, an opposite side data input interface, an analog quantity data input interface and an FT3 format data input interface, and further comprises a data processing module and a data output interface.
The data processing module is used for processing the contralateral data, performing data interpolation on the contralateral data, and framing the interpolated data according to a set frame format; the device is also used for unframing the SV data in the calibration time of the side data, storing the SV data into a data cache region, carrying out data interpolation on the SV data, and framing the interpolated data according to a set frame format; the analog quantity data is converted into a message through the conditioning circuit and is stored in the data cache region, and then framing is carried out according to a set frame format; and the device is also used for receiving the FT3 format data, decoding the FT3 format data and framing the decoded data according to a set frame format. The data output interface is used for outputting the data processed by the data processing module.
The data processing module referred to in the above embodiments is actually a computer solution based on the data processing method flow of the present invention, that is, the data processing module is a processing process corresponding to the method flow, and the data processing module is not described in detail since the description of the above method is sufficiently clear and complete.
The data processing device which can be accessed to the multi-format can be a protection device or a measurement and control device, and is simultaneously suitable for two transformer substation types of a conventional transformer substation and an intelligent transformer substation. The conventional mutual inductor outputs analog quantity data, the electronic mutual inductor outputs FT3 format data, other spaced sampling data outputs 9-2 format SV data and opposite side private protocol data of 24 points to the device, the device analyzes, synchronizes and frames the multi-format data through the data processing module, then the device performs corresponding protection/measurement and control, wave recording and output functions through the protection/control logic processing module, the wave recording logic processing module, the sending logic processing module and other three modules, and finally outputs the data to other corresponding protection and control devices, wave recording and monitoring systems and other occasions.
The second embodiment:
the invention provides a data processing device capable of accessing multi-format data such as analog quantity, FT3, 9-2 and the like, which can be a protection device or a measurement and control device. The conventional mutual inductor outputs analog quantity data, the electronic mutual inductor outputs data in an FT3 format, other spaced sampling data outputs SV data in a 9-2 format, and the opposite side outputs private protocol data of 24 points to the device, the device performs synchronization and other processing on multi-format data through a data processing module, then realizes corresponding protection/measurement and control functions, wave recording functions and data sending functions through a protection (if a protection device)/control (if a measurement and control device) logic processing module, a wave recording logic processing module, a sending logic processing module and other modules, and finally outputs the data to other protection and control devices and various occasions of a wave recording and monitoring system, as shown in FIG. 2.
The specific signal processing steps are as follows:
1) and (3) opposite side data processing:
the opposite side data is 24-point private specification data. After the data arrives at the local side, the data passes through the optical fiber interface, the optical difference communication module is used for carrying out primary processing on the data on the opposite side, the sampling time on the opposite side is restored, the time is calibrated into the SV data on the local side, after alignment processing is carried out, data interpolation is carried out uniformly with the SV data on the local side, finally, the data is framed and output through the data interface to be used by the protection/control logic processing module, the wave recording logic processing module and the sending logic processing module.
2) The data processing step at the home side:
a) and SV input:
SV data is processed through a PHY chip, SV messages are unframed by utilizing the calibration time of the opposite side data and stored in a data cache region, a software frequency measurement module extracts the power grid frequency according to the content of the frame messages in the cache region, the sampling interval is adjusted, the SV data and the opposite side data are interpolated to form processed data frames, and the processed data frames are output through a data interface and are used by a protection/control logic processing module, a wave recording logic processing module and a sending logic processing module.
b) Inputting an analog quantity:
under the condition of analog quantity output of a conventional mutual inductor, firstly, the analog quantity is converted into a message through a conditioning circuit, and the message is stored in a data cache region and then data is framed. Meanwhile, the sampling interval is adjusted through hardware frequency measurement; when the sampling interval needs to be adjusted, the sampling pulse is adjusted, and the adjusting circuit is adjusted through ADC control.
c) FT3 data input:
data in an FT3 format output by the electronic transformer is input through the optical fiber receiver, and the optical fiber receiver receives synchronous second pulse; secondly, performing FT3 decoding on the data, marking a time mark on a frame header by using a time marking signal after decoding, and performing CRC (cyclic redundancy check) check; and finally, data is framed and output through a data interface for the protection/control logic processing module, the wave recording logic processing module and the sending logic processing module.
The invention can realize the access and unified processing of data in various formats such as analog quantity, FT3 format, 9-2 format and the like, and finally output data suitable for various applications of protection/measurement and control, wave recording and monitoring, can be used in two occasions of a conventional transformer substation and an intelligent transformer substation, can obviously reduce the number of transformer substation equipment, and simultaneously reduces the failure rate and improves the reliability of the system. The device has certain popularization and application value.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A data processing method of an intelligent substation is characterized by comprising the following steps:
1) receiving data to be processed, wherein the data to be processed is at least two of SV data, contralateral data, analog quantity data and FT3 format data;
2) processing the contralateral data by adopting an optical difference communication module, performing data interpolation on the contralateral data, and framing the interpolated data according to a set frame format;
3) the SV data is unframed by utilizing the calibration time of the opposite side data and is stored in a data cache region, the SV data is subjected to data interpolation, and the interpolated data is framed according to a set frame format;
4) converting analog quantity data into messages through a conditioning circuit, storing the messages into a data cache region, and framing the messages according to a set frame format;
5) receiving the FT3 format data by adopting an optical fiber receiver, decoding the FT3 format data, and framing the decoded data according to a set frame format;
when the data to be processed are SV data and contralateral data, performing data interpolation on the SV data and the contralateral data together, and framing according to a set frame format;
and after the data on the opposite side arrives at the local side, the data on the opposite side is firstly processed through an optical fiber interface by using an optical difference communication module, the sampling time on the opposite side is restored, the time is calibrated into the SV data on the local side, after alignment processing is carried out, data interpolation is carried out on the data and the SV data on the local side in a unified manner, and finally, the data are framed.
2. The intelligent substation data processing method according to claim 1, wherein the opposite side data is opposite side data of 24-point private convention data.
3. The data processing method of the intelligent substation according to claim 1, wherein the step 5) further comprises time stamping the frame header of the decoded data by using the time stamping signal, and performing CRC check.
4. The data processing method of the intelligent substation according to claim 1, wherein step 4) further comprises measuring the frequency of the conditioning circuit, adjusting the sampling interval according to the frequency, adjusting the sampling pulse when the sampling interval needs to be adjusted, and adjusting the conditioning circuit through ADC control.
5. The data processing device of the intelligent substation is characterized by at least comprising two of an SV data input interface, an opposite side data input interface, an analog quantity data input interface and an FT3 format data input interface, and further comprising a data processing module and a data output interface;
the data processing module is used for processing the contralateral data, performing data interpolation on the contralateral data, and framing the interpolated data according to a set frame format; the SV data are unframed in the calibration time of the side data and stored in a data cache region, the SV data are subjected to data interpolation, and the interpolated data are framed according to a set frame format; the analog quantity data is converted into a message through the conditioning circuit and is stored in the data cache region, and then framing is carried out according to a set frame format; the device is also used for receiving the FT3 format data, decoding the FT3 format data and framing the decoded data according to a set frame format;
the data output interface is used for outputting the data processed by the data processing module;
when the received data to be processed are SV data and contralateral data, the data processing module is also used for carrying out data interpolation on the SV data and the contralateral data together and framing according to a set frame format;
and after the data on the opposite side arrives at the local side, the data on the opposite side is firstly processed through an optical fiber interface by using an optical difference communication module, the sampling time on the opposite side is restored, the time is calibrated into the SV data on the local side, after alignment processing is carried out, data interpolation is carried out on the data and the SV data on the local side in a unified manner, and finally, the data are framed.
6. The intelligent substation data processing apparatus according to claim 5, wherein the opposite side data is opposite side data of 24-point private convention data.
7. The data processing device of the intelligent substation of claim 5, wherein the data processing module is further configured to timestamp the frame header of the decoded data with the time tick signal and perform CRC check.
8. The data processing device of the intelligent substation of claim 6, wherein the data processing module is further configured to measure a frequency of the conditioning circuit, adjust a sampling interval according to the frequency, adjust sampling pulses when the sampling interval needs to be adjusted, and adjust the conditioning circuit through ADC control.
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| CN101534002B (en) * | 2009-04-14 | 2011-04-13 | 国电南瑞科技股份有限公司 | Data synchronization method for ET-connected optical-fiber differential protection devices |
| CN101841446B (en) * | 2010-05-25 | 2012-04-25 | 许继集团有限公司 | Pilot channel transmission device, optical fiber differential protective device and method |
| CN102916394B (en) * | 2011-12-24 | 2015-07-15 | 许继电气股份有限公司 | On-site transformer protection system used for intelligent transformer substation |
| CN102608450B (en) * | 2012-02-24 | 2014-07-02 | 江苏凌创电气自动化股份有限公司 | Testing and verifying system appropriate for intelligent transformer substation and verifying method |
| CN103545925B (en) * | 2013-09-27 | 2015-04-22 | 广东电网公司电力科学研究院 | FPGA (field programmable gate array) based FT3 receiving circuit |
| CN103533066A (en) * | 2013-10-21 | 2014-01-22 | 国家电网公司 | Method for receiving, transmitting and synchronizing fiber longitudinal differential data through process level device |
| CN103792419B (en) * | 2014-03-04 | 2016-01-20 | 济南大学 | Realize analog quantity and mix the synchronous sampling method accessed with digital quantity |
| CN104049231B (en) * | 2014-06-05 | 2017-02-01 | 国家电网公司 | Integrated system for testing delay of separated units of optical electronic transformer |
| CN104410052A (en) * | 2014-09-29 | 2015-03-11 | 国家电网公司 | Current differential protection system based on PON communication and protection method of current differential protection system |
| CN104836705A (en) * | 2015-05-13 | 2015-08-12 | 国家电网公司 | Method for performing calibration time delay error testing on time delay calibration switch of intelligent substation |
| CN105044524B (en) * | 2015-08-10 | 2018-12-04 | 许继集团有限公司 | A kind of arrester monitoring method and system suitable for intelligent substation |
| CN105572516B (en) * | 2016-02-19 | 2018-12-18 | 成都府河电力自动化成套设备有限责任公司 | Multi-functional FPGA acquisition unit with time reference output |
| CN106878196B (en) * | 2017-01-16 | 2021-02-05 | 许继集团有限公司 | Data processing method and device of ADC plug-in |
| CN106961396B (en) * | 2017-03-21 | 2019-01-22 | 中国南方电网有限责任公司电网技术研究中心 | Based on the method and apparatus that caching realizes SV Message processing in FPGA piece |
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