CN101719692A - Method for acquiring network data and analyzing network performance for digital substation - Google Patents
Method for acquiring network data and analyzing network performance for digital substation Download PDFInfo
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- CN101719692A CN101719692A CN200910186781A CN200910186781A CN101719692A CN 101719692 A CN101719692 A CN 101719692A CN 200910186781 A CN200910186781 A CN 200910186781A CN 200910186781 A CN200910186781 A CN 200910186781A CN 101719692 A CN101719692 A CN 101719692A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a method for acquiring network data and analyzing network performance for a digital substation, which comprises the following steps: acquiring station control layer network messages and process layer network messages of the digital substation by forcibly setting a network card working mode and adopting the network sniffing technology, carrying out statistical analysis on communication network messages, and then, evaluating the network performance. The invention does not need to change the original network topologic structure of the digital substation and finishes the capture of station control layer network data and process layer network data under the condition that the normal operation of the substation is not influenced, thereby realizing the purposes of testing and evaluating the communication network performance and realizing the high degree of integration between the communication network and the digital substation. The method of the invention is suitable for acquiring network data and analyzing network performance for a digital substation of an electric power system.
Description
Technical field
The present invention relates to a kind of network data that is used for electric power digital transformer station and obtain and the network performance analysis method, belong to the power information technical field of automation.
Background technology
In electric power system, there is following problem in the conventional substation automated system: network and communication protocol that (1) distinct device manufacturer uses are incompatible, and equipment room interoperability performance is poor; (2) information is difficult to share; (3) system expandability difference etc.For addressing these problems; in electric substation automation system, realize the interoperability of equipment; satisfy the needs that protection observing and controlling function is freely distributed at different equipment rooms simultaneously; and the long-time stability of maintenance system; International Electrotechnical Commissio IEC the 57th technical committee has formulated IEC61850 protocol architecture standard; this standard is based on unique international standard of the electric substation automation system of universal network platform; it has changed the enclosed structure of present electric substation automation system; make it to become the system of open and standard, China has carried out adopting by equation to this standard.
The network communications technology is the important foundation of IEC61850 communication system.Along with based on the applying of the digital transformer substation system of IEC61850 communication system, earth-shaking variation has taken place in the structure of transformer station, is illustrated in figure 1 as the digital transformer substation system structural representation.
Need in the conventional substation to jump the make and break road, in digitizing station, then will pass through network, finish in the mode of digital signal communication with cable hardwire mode.So in digital transformer substation, station level and process layer net network performance have been proposed high requirement, may cause catastrophic effect in case the network in the transformer station goes wrong.This is a stern challenge for network management in the digital transformer substation.The data communication that Ethernet is inner too much makes the network and the network equipment all bear huge pressure at load, operating efficiency and secure context.Management in the electric power system, operations staff, whether overlond running, local area network (LAN) inside and whether normally whether local area network (LAN) is normal with being connected of the Internet, the transfer of data between the IED (as: GOOSE information, interoperability information, failure wave-recording information, control information) or the like of whether normal, the intelligent electronic device (IED) of communication data in awareness network transmission and the network equipment effectively, simultaneously, run into network off and on, when network internal station level network, process layer network fault, fault location point and with its eliminating fast.Thereby, need carry out real-time monitoring and evaluation to the digital transformer substation network performance, how to obtain the disparate networks message and do not influence the proper communication of network and network message analysis is become a problem demanding prompt solution.
Summary of the invention
The objective of the invention is, be to realize the COMMUNICATION NETWORK PERFORMANCES evaluation of electric power digital transformer station, propose that a kind of network data is obtained and the network performance analysis method.
Technical scheme of the present invention is, the present invention is by forcing setting to the network hardware equipment different working modes, the employing network Sniffer Technique is obtained the disparate networks message in the digital transformer substation, and the network message that obtains is carried out the target that the statistic of classification analysis has realized network performance is carried out real-time monitoring and evaluation.
The network data of digital transformer substation of the present invention is obtained and the step of network performance analysis method is:
1, sets the network interface card mode of operation.In Ethernet, all communications are all with broadcast mode work, and the all-network interface in the same network segment can be visited all data of transmitting on physical medium, and each network interface all has a unique hardware address, i.e. MAC Address.Under normal situation, a network interface only may respond following two kinds of Frames: with own MAC Address Frame that is complementary and the broadcast data frame that is sent to all machines.But in the system of reality, the transmitting-receiving of data is generally all finished by network interface card, and the mode of operation of network interface card has following 4 kinds: (1) broadcasting: the network interface card under this pattern can receive the Frame of issuing oneself and the broadcast data frame in the network, and this is the working method of giving tacit consent to; (2) multicast: the network interface card under this pattern is merely able to the receiving multicast data frame; (3) direct: the network interface card under this pattern can only receive the Frame of issuing oneself; (4) mix: the network interface card under this pattern can receive by all Frames on the network equipment.
In the methods of the invention network interface card is forced to place promiscuous mode work, thereby can receive all data by the network equipment, and no matter whom the destination of these data is.
2, described method is utilized network Sniffer Technique, catches network message.Idiographic flow is: (1) Network Search equipment obtains available network interface by calling the pcap_lookupdev function; (2) open network device interface, obtain bag and catch the description pointer by calling the pcap_open_live function; (3) the Packet Filtering rule is set, finishes by calling the pcap_setfilter function; (4) carry out the packet capture operation, this action need calls pcap_loop or the pcap_dispatch function is finished.
3, described method network performance analysis comprises following content: (1) by operations such as MAC Address scanning analysis, packet broadcast, finishes functions such as the application management of network and failure diagnosis; (2) by source address, destination address information in the phase-split network message, corresponding relation according to address table and equipment, draw out the connection state matrix diagram of protecting in the transformer station secondary system between control appliance, the merge cells, conveniently check the operating position of network, search bandwidth occupancy the maximum, find out the most active automation equipment; (3) network message is carried out detailed statistical analysis, draw the data situation of specific period, obtain all kinds of statistical informations between different agreement or the end points; (4) network message is carried out classification analysis, can obtain the equipment session analysis chart, the session communication information that carries out at IEC 61850 networks between each IED in the network is provided; (5) network message is carried out the network endpoint statistical analysis, can look for the IP end points and the physical endpoint of orientation and communication amount maximum fast, and provide the distinct statistics ranking of end points flow of each procotol.
The present invention's beneficial effect compared with the prior art is that (1) the inventive method need not to change the original topological structure of network; (2) the present invention directly catches and resolves the GOOSE message from the network layer (station level, process layer or independent GOOSE network) of digital transformer substation, under the situation that does not influence the normal operation of transformer station, finish catching to station control net and process layer network data, and then realize network performance is carried out test and evaluation, realized merging with the height of digital transformer substation.
The inventive method is applicable to that the network data of electric power digital transformer station obtains and network performance analysis.
Description of drawings
Fig. 1 is the digital transformer substation system structural representation;
Fig. 2 catches flow chart for network message.
Embodiment
Digital transformer substation network data of the present invention is obtained and the embodiment of network performance analysis method may further comprise the steps:
1, sets the network interface card mode of operation
The embodiment of the invention is at first set the network interface card mode of operation, and network interface card is forced to place promiscuous mode work, receives all data by the network equipment.
2, utilize network Sniffer Technique, catch network message
After network interface card is set works in promiscuous mode, all Frames all can be uploaded to network layer by NIC driver.After grouped data has arrived network layer, the network layer handles program also will be judged its purpose IP address, if local IP then is uploaded to transport layer process (which upper layer application deal with data message is transport layer decide by according to the destination slogan again), otherwise abandons.Upper layer application also can't " be grabbed " this not one's own packet.This just needs one directly and the driver module of NIC driver interface, the Frame of uploading by this module network interface card has just had two places to go: one is normal protocol stack, another is exactly packet capture and filtering module, for packet non-indigenous, the former can abandon, and the latter can require to decide to upload or abandon according to upper layer application.
The packet capture mechanism of present embodiment adopts winpcap (windows packet capture) instrument, and winpcap is free, the public network access system of the windows platform next one, and it provides the ability of accesses network bottom for the win32 application program.Utilize Wincap to finish following function: (1) catches the initial data message, is included in data message each main frame transmission/reception and that exchange each other on the shared network.(2) before data message mails to application program, data message some is special according to self-defining rule filters out.(3) on network, send original data message.(4) statistical information in the collection network communication process.Winpcap comprises the packet audiomonitor driver of kernel level, rudimentary dynamic link libraries packet.dll and the AS storehouse wpcap.dll that has nothing to do.Packet audiomonitor driver is directly obtained network packet from data link layer and is not passed to the application program that operates in client layer with not adding modification, also allows the user to send raw data packets.Rudimentary dynamic link libraries packet.dll operates in client layer, and application program and packet audiomonitor driver are kept apart, and makes application program can not add with revising and moves in different Windows systems.Packet.dll in the difference Windows system is also inequality, but they provide a cover identical calling interface, makes the irrelevant storehouse of AS not rely on specific windows platform.Irrelevant storehouse wpcap.dll of AS and application program are compiled in together, and the service that it uses rudimentary dynamic link libraries to provide provides perfect monitoring interface to application program.
The flow process of catching network message is as follows: (1) Network Search equipment obtains available network interface by calling the pcap_lookupdev function; (2) open network device interface, obtain bag and catch the description pointer by calling the pcap_open_live function; (3) the Packet Filtering rule is set, finishes by calling the pcap_setfilter function; (4) carry out the packet capture operation, this action need calls pcap_loop or the pcap_dispatch function is finished.Whole network data is caught flow process as shown in Figure 2.
3, network performance analysis
After getting access to network message, can finish different communication network performance evaluation functions by various processing to message.Comprise following analysis:
(1), finishes functions such as the application management of network and failure diagnosis by operations such as MAC Address scanning analysis, packet broadcast;
(2) by source address, destination address information in the phase-split network message, corresponding relation according to address table and equipment, draw out the connection state matrix diagram of protecting in the transformer station secondary system between control appliance, the merge cells, matrix diagram can be checked the operating position of network easily, search bandwidth occupancy the maximum, also can find out the most active automation equipment;
(3) network message is carried out detailed statistical analysis, draw the data situation of specific period, obtain all kinds of statistical informations between different agreement or the end points;
(4) network message is carried out classification analysis, can obtain the equipment session analysis chart, the session communication information that carries out at IEC 61850 networks between each IED in the network is provided;
(5) network message is carried out the network endpoint statistical analysis, can look for the IP end points and the physical endpoint of orientation and communication amount maximum fast, and provide the distinct statistics ranking of end points flow of each procotol.
Claims (4)
1. a digital transformer substation network data is obtained and the network performance analysis method, it is characterized in that, described method is by forcing setting to the network hardware equipment different working modes, the employing network Sniffer Technique is obtained the disparate networks message in the digital transformer substation, the network message that obtains is carried out statistic of classification analyze the target that realizes network performance is carried out real-time monitoring and evaluation.
2. digital transformer substation network data according to claim 1 is obtained and the network performance analysis method, it is characterized in that, described pressure is set to be forced network interface card to place promiscuous mode work, thereby can receive all data by the network equipment.
3. digital transformer substation network data according to claim 1 is obtained and the network performance analysis method, it is characterized in that, the idiographic flow that described network Sniffer Technique is caught network message is: (1) Network Search equipment obtains available network interface by calling the pcap_lookupdev function; (2) open network device interface, obtain bag and catch the description pointer by calling the pcap_open_live function; (3) the Packet Filtering rule is set, finishes by calling the pcap_setfilter function; (4) carry out the packet capture operation.
4. digital transformer substation network data according to claim 1 is obtained and the network performance analysis method, it is characterized in that, described network performance analysis comprises following content: (1) by operations such as MAC Address scanning analysis, packet broadcast, finishes functions such as the application management of network and failure diagnosis; (2) by source address, destination address information in the phase-split network message, corresponding relation according to address table and equipment, draw out the connection state matrix diagram of protecting in the transformer station secondary system between control appliance, the merge cells, conveniently check the operating position of network, search bandwidth occupancy the maximum, find out the most active automation equipment; (3) network message is carried out detailed statistical analysis, draw the data situation of specific period, obtain all kinds of statistical informations between different agreement or the end points; (4) network message is carried out classification analysis, can obtain the equipment session analysis chart, the session communication information that carries out at IEC 61850 networks between each IED in the network is provided; (5) network message is carried out the network endpoint statistical analysis, can look for the IP end points and the physical endpoint of orientation and communication amount maximum fast, and provide the distinct statistics ranking of end points flow of each procotol.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025560A (en) * | 2010-11-15 | 2011-04-20 | 广东电网公司电力科学研究院 | Method for testing process-level network test method |
| CN102195868A (en) * | 2010-12-17 | 2011-09-21 | 曙光信息产业(北京)有限公司 | Method and device for dynamically classifying network messages at high efficiency |
| CN102377473A (en) * | 2010-08-23 | 2012-03-14 | 熊猫电子集团有限公司 | Network control center of satellite mobile communication network |
| CN102946395A (en) * | 2012-11-23 | 2013-02-27 | 华为技术有限公司 | Method and device of simulating network element |
| CN103312037A (en) * | 2013-06-09 | 2013-09-18 | 国家电网公司 | Device and method for testing pressure of intelligent substation |
| CN103873285A (en) * | 2012-12-18 | 2014-06-18 | 河南省电力公司郑州供电公司 | Unified information network management platform |
| CN103997123A (en) * | 2014-05-07 | 2014-08-20 | 国家电网公司 | Intelligent-transformer-substation circuit breaker remote control system and method based on sniffing of idle state |
| CN104202328A (en) * | 2014-09-12 | 2014-12-10 | 积成电子股份有限公司 | GOOSE/SMV (generic object oriented substation event/sampled measured value) message subscribing method, GOOSE/SMV message subscribing configuration module and GOOSE/SMV message subscribing terminal |
| CN106656658A (en) * | 2016-11-17 | 2017-05-10 | 许继集团有限公司 | Substation information pushing system |
| CN107332725A (en) * | 2016-04-29 | 2017-11-07 | 广东电网有限责任公司电力调度控制中心 | A kind of method of fast resolving PCAP messages |
| CN109873734A (en) * | 2018-01-11 | 2019-06-11 | 贵州白山云科技股份有限公司 | A kind of bottom data monitoring method, medium, equipment and device |
| CN113792076A (en) * | 2021-09-17 | 2021-12-14 | 甘肃同兴智能科技发展有限责任公司 | Data auditing system |
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| CN102377473A (en) * | 2010-08-23 | 2012-03-14 | 熊猫电子集团有限公司 | Network control center of satellite mobile communication network |
| CN102377473B (en) * | 2010-08-23 | 2014-02-19 | 熊猫电子集团有限公司 | Network control center of satellite mobile communication network |
| CN102025560B (en) * | 2010-11-15 | 2014-02-05 | 广东电网公司电力科学研究院 | Method for testing process-level network test method |
| CN102025560A (en) * | 2010-11-15 | 2011-04-20 | 广东电网公司电力科学研究院 | Method for testing process-level network test method |
| CN102195868B (en) * | 2010-12-17 | 2015-05-20 | 曙光信息产业(北京)有限公司 | Method and device for dynamically classifying network messages at high efficiency |
| CN102195868A (en) * | 2010-12-17 | 2011-09-21 | 曙光信息产业(北京)有限公司 | Method and device for dynamically classifying network messages at high efficiency |
| CN102946395A (en) * | 2012-11-23 | 2013-02-27 | 华为技术有限公司 | Method and device of simulating network element |
| CN102946395B (en) * | 2012-11-23 | 2015-12-02 | 华为技术有限公司 | The method and apparatus of analogue network element |
| CN103873285A (en) * | 2012-12-18 | 2014-06-18 | 河南省电力公司郑州供电公司 | Unified information network management platform |
| CN103312037A (en) * | 2013-06-09 | 2013-09-18 | 国家电网公司 | Device and method for testing pressure of intelligent substation |
| CN103312037B (en) * | 2013-06-09 | 2015-06-10 | 国家电网公司 | Device and method for testing pressure of intelligent substation |
| CN103997123B (en) * | 2014-05-07 | 2016-03-30 | 国家电网公司 | A kind of based on smelling the circuit breaker of intelligent transformer substation remote control system and method for visiting idle condition |
| CN103997123A (en) * | 2014-05-07 | 2014-08-20 | 国家电网公司 | Intelligent-transformer-substation circuit breaker remote control system and method based on sniffing of idle state |
| CN104202328A (en) * | 2014-09-12 | 2014-12-10 | 积成电子股份有限公司 | GOOSE/SMV (generic object oriented substation event/sampled measured value) message subscribing method, GOOSE/SMV message subscribing configuration module and GOOSE/SMV message subscribing terminal |
| CN104202328B (en) * | 2014-09-12 | 2017-12-08 | 积成电子股份有限公司 | A kind of method, configuration module and the subscription end of subscription GOOSE/SMV messages |
| CN107332725A (en) * | 2016-04-29 | 2017-11-07 | 广东电网有限责任公司电力调度控制中心 | A kind of method of fast resolving PCAP messages |
| CN107332725B (en) * | 2016-04-29 | 2020-10-16 | 广东电网有限责任公司电力调度控制中心 | Method for rapidly analyzing PCAP message |
| CN106656658A (en) * | 2016-11-17 | 2017-05-10 | 许继集团有限公司 | Substation information pushing system |
| CN109873734A (en) * | 2018-01-11 | 2019-06-11 | 贵州白山云科技股份有限公司 | A kind of bottom data monitoring method, medium, equipment and device |
| CN109873734B (en) * | 2018-01-11 | 2021-07-13 | 贵州白山云科技股份有限公司 | Bottom layer data monitoring method, medium, equipment and device |
| CN113792076A (en) * | 2021-09-17 | 2021-12-14 | 甘肃同兴智能科技发展有限责任公司 | Data auditing system |
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