CN102611593B - Method for implementing Ethernet transceiver of intelligent control equipment of digitized transformer substation - Google Patents
Method for implementing Ethernet transceiver of intelligent control equipment of digitized transformer substation Download PDFInfo
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- CN102611593B CN102611593B CN2012100353682A CN201210035368A CN102611593B CN 102611593 B CN102611593 B CN 102611593B CN 2012100353682 A CN2012100353682 A CN 2012100353682A CN 201210035368 A CN201210035368 A CN 201210035368A CN 102611593 B CN102611593 B CN 102611593B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The invention relates to a method for implementing an Ethernet transceiver of intelligent control equipment and a digitized transformer substation, which comprises the following steps: pre-analyzing a received IEC61850-9-2 message by the Ethernet transceiver, taking out a part processed by the CPU (central processing unit) of the intelligent control equipment directly, thus, alleviating workload for analyzing CPU data of the intelligent control equipment. According to method provided by the invention, when the intelligent control equipment needs to send a message to exterior, the intelligent control equipment only needs to provide a data part of a data package; the Ethernet transceiver implements the whole package work of network data messages; and a method for implementing the Ethernet transceiver and alleviating CPU load of the intelligent control equipment is provided.
Description
Technical field
The invention belongs to communication field in electric power system, particularly be applicable to the intelligent control device of digital transformer substation.
Background technology
Development along with the Intelligent transformer station technology, the particularly extensive use of electronic mutual inductor, the framework of electric substation automation system and the change of technology have greatly been promoted, by traditional control appliance framework that integrates the functions such as data acquisition, data processing, control command output, be gradually varied to and data acquisition, data processed and control command execution function scattering device from geographical position, the novel framework as the data corridor by the optical fiber industry Ethernet each other.This framework can the reduced data acquisition system configuration, improve the anti-interference of system, can also greatly reduce the use of the non-ferrous metal that comprises cable simultaneously.But the application of this decentralized architecture has brought new challenge to the ether network technology simultaneously, on the one hand, due to the data acquisition system dispersed placement, and total system requires all synchronal data sampling output, also just require can uniformly-spaced send with an accurate interval through the synchrodata of ethernet medium transmission, and general ethernet transceiver all can't be realized this function, cause the data transmitting time to have the time delay of different sizes, finally cause the data phase deviation of data processing unit even to cause the data step-out, therefore need to increase this synchronized transmission function, forms data source particularly, most situations according to processing unit, it is strictly synchronous that this data source of special requirement is sent to the data of different data processing units, on the other hand, extensively adopt the transmission protocol of IEC61850-9-2 standard agreement as the process layer sampled data in Intelligent transformer station, if realize this agreement with processor, because the protocol massages protocol of encode and decode can take a large amount of processor logic operation time, along with increasing of the process-level network of the required expansion of single device, single processor needs the quantity of encoding and decoding greatly to increase, be difficult to the encoding and decoding work of mass data, simultaneously between processor and ethernet transceiver because transmitted data amount is huge, also can badly influence data-handling capacity, therefore be necessary the IEC61850-9-2 codec functions is moved in network transceivers, adopt the parallel encoding and decoding of hardware, improve data-handling efficiency, thereby improve the data-handling capacity of equipment.
The present invention can solve current commodity ethernet transceiver in the deficiency realized aspect Intelligent transformer station, improves the data-handling capacity of intelligent control device.
Summary of the invention
The objective of the invention is, in being applicable to the intelligent control device of digital transformer substation, provide a kind of implementation method that alleviates the ethernet transceiver of intelligent control device cpu load.This ethernet transceiver major function is that the IEC61850-9-2 message to receiving resolves in advance, directly takes out the part that needs intelligent control device CPU to process, thereby alleviates the workload that the intelligent control device cpu data is resolved.When intelligent control device need to send message to outside, this intelligent control device only need provide the data division of packet, and is realized the packing work of whole network data message by this ethernet transceiver.This implementation method can effectively be applied in the intelligent control device of digital transformer substation.
Technical scheme of the present invention is: a kind of implementation method of ethernet transceiver of intelligent control device of digital transformer substation, ethernet transceiver is resolved in advance to the IEC61850-9-2 message received, and directly takes out the part that needs intelligent control device CPU to process; When intelligent control device need to send message to outside, this intelligent control device only need provide the data division of packet, and is realized the packing work of whole network data message by this ethernet transceiver; The handling process of data receiver part is as follows:
Step 1: when ethernet transceiver receives external signal (typical in Media Independent Interface MII signal), at first receive Preamble and Sfd signal (prefix and starting-frame delimiter), then start to receive the Ethernet message, when the destination address of the Ethernet message of finding to receive is not that the address needed is that this ethernet transceiver address is by packet loss;
Step 2: if the destination address of the Ethernet message of receiving is the address needed, the type of data message judged, if do not belong to sampled value SV message, jump to step 4, otherwise order enters step 3;
Step 3: the sampled value SV message received is carried out to CRC check, if meet the CRC check, this message is resolved according to sampled value SV standard, the valid data that parse deposit SV_FIFO(fifo queue structure in), jump to step 5;
Step 4: deposit the message received in common FIFO;
Step 5: wait for next Preamble and Sfd signal;
The handling process of data transmitting portion is as follows:
Step 1. is obtained to be needed to send data, and data length is carried out to verification;
Step 2., according to the MII agreement, at first sends Preamble and Sfd signal, next sends the Ethernet message data in FIFO, finally at MII, finally adds the Ethernet CRC calculated, and completes process of transmitting.
Beneficial effect of the present invention is: according to above processing mode, can save in a large number the processing time of the intelligent control device CPU be connected with ethernet transceiver, alleviate cpu load, improve the execution efficiency that Based Intelligent Control sets CPU.
The accompanying drawing explanation
Fig. 1 is that packet receives flow chart.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The handling process of data receiver part is as follows:
Step 1: when receiving outside MII signal, at first receive Preamble, the Sfd signal, then start to receive the Ethernet message, when the destination address of the Ethernet message of finding to receive is not that the address that needs is by packet loss.
Step 2: if the destination address of the Ethernet message of receiving is the address needed, the type of data message judged, if do not belong to the SV message, jump to step 4, otherwise order enters step 3.
Step 3: the SV message received is carried out to CRC check, if meet the CRC check, this message is resolved according to the SV standard, the valid data that parse deposit SV-FIFO in.Jump to step 5.
Step 4: deposit the message received in common FIFO.
Step 5: wait for next Preamble and Sfd.
The handling process of data transmitting portion is as follows:
Step 1. is obtained to be needed to send data, and data length is carried out to verification;
Step 2., according to the MII agreement, at first sends Premble, and next Sfd sends the Ethernet message Data in FIFO, finally at MII, finally adds the Ethernet CRC calculated, and completes process of transmitting.
Claims (1)
1. the implementation method of the ethernet transceiver of a digital transformer substation intelligent control device, is characterized in that ethernet transceiver resolves in advance to the IEC61850-9-2 message received, and directly takes out the part that needs intelligent control device CPU to process; When intelligent control device need to send message to outside, this intelligent control device only need provide the data division of packet, and is realized the packing work of whole network data message by this ethernet transceiver; The handling process of data receiver part is as follows:
Step l: when ethernet transceiver receives external signal, at first receive Preamble and Sfd signal, be prefix and starting-frame delimiter, then start to receive the Ethernet message, when the destination address of the Ethernet message of finding to receive is not that the address needed is that this ethernet transceiver address is by packet loss;
Step 2: if the destination address of the Ethernet message of receiving is the address needed, the type of data message judged, if do not belong to sampled value SV message, jump to step 4, otherwise order enters step 3;
Step 3: the sampled value SV message received is carried out to CRC check, if meet the CRC check, this message is resolved according to sampled value SV standard, the valid data that parse deposit SV_FIFO in, jump to step 5;
Step 4: deposit the message received in common FIFO;
Step 5: wait for next Preamble and Sfd signal;
The handling process of data transmitting portion is as follows:
Step 1. is obtained to be needed to send data, and data length is carried out to verification;
Step 2., according to the MII agreement, at first sends Premble and Sfd signal, next sends the Ethernet message data in FIFO, finally at Media Independent Interface MII signal, finally adds the Ethernet CRC calculated, and completes process of transmitting.
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| CN2012100353682A CN102611593B (en) | 2012-02-17 | 2012-02-17 | Method for implementing Ethernet transceiver of intelligent control equipment of digitized transformer substation |
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| CN103037032B (en) * | 2012-12-20 | 2016-06-29 | 北京四方继保自动化股份有限公司 | A kind of FPGA of use realizes the method that SV data 32 bit addressing accesses |
| CN104125042A (en) * | 2014-07-25 | 2014-10-29 | 国家电网公司 | Hardware decoding system and implementing method thereof |
| CN105743681B (en) * | 2014-12-12 | 2019-04-05 | 国家电网公司 | A kind of the time delay visual analysis method and system of process layer communication network |
| CN113114706B (en) * | 2021-06-15 | 2021-09-24 | 南方电网数字电网研究院有限公司 | Multichannel Ethernet message processing method based on power chip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101719694A (en) * | 2009-12-16 | 2010-06-02 | 北京四方继保自动化股份有限公司 | Device for analyzing network communication record of digital transformer substation |
| CN202142912U (en) * | 2011-08-16 | 2012-02-08 | 江西省电力科学研究院 | Digitalized power quality analyzer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101719694A (en) * | 2009-12-16 | 2010-06-02 | 北京四方继保自动化股份有限公司 | Device for analyzing network communication record of digital transformer substation |
| CN202142912U (en) * | 2011-08-16 | 2012-02-08 | 江西省电力科学研究院 | Digitalized power quality analyzer |
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Owner name: JINZHI SCIENCE AND TECHNOLOGY CO., LTD., JIANGSU S Free format text: FORMER OWNER: JINZHI SCIENCE AND TECHNOLOGY CO., LTD., JIANGSU Effective date: 20130114 |
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Effective date of registration: 20130114 Address after: 150090 No. 301, Han River Road, Nangang District, Heilongjiang, Harbin Applicant after: Heilongjiang Power Co., Ltd. Applicant after: Jinzhi Science and Technology Co., Ltd., Jiangsu Applicant after: State Grid Corporation of China Address before: 150090 No. 301, Han River Road, Nangang District, Heilongjiang, Harbin Applicant before: Heilongjiang Power Co., Ltd. Applicant before: Jinzhi Science and Technology Co., Ltd., Jiangsu |
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