CN109587025B - Port self-learning intelligent substation switch - Google Patents
Port self-learning intelligent substation switch Download PDFInfo
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- CN109587025B CN109587025B CN201811226345.3A CN201811226345A CN109587025B CN 109587025 B CN109587025 B CN 109587025B CN 201811226345 A CN201811226345 A CN 201811226345A CN 109587025 B CN109587025 B CN 109587025B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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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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Abstract
The invention discloses a port self-learning intelligent substation switch, which comprises the following steps: s1: the method comprises the following steps that a switch receives an SCD file, automatically analyzes the SCD file, and analyzes the connection relation of various devices; s2: identifying a Mac address of a port through IP learning and IP aging functions of the switch, and acquiring switch information and a communication port state through an SNMP (simple network management protocol) of the switch; s3: comparing and analyzing whether the actual receiving and sending conditions of each port of the access switch are sending only and not receiving, receiving only and not sending or sending and receiving; if the port transmission/reception is transmission-only or reception-not, the process proceeds to step S4, if the port transmission/reception is transmission-only or reception-not, the process proceeds to step S5, and if the port transmission/reception is reception, the process proceeds to step S6. Aiming at the defects of the functions of the existing intelligent substation switch, the intelligent substation switch scheme with self-learning ports is adopted: the optical ports connected to the switch belong to different devices.
Description
Technical Field
The invention relates to a switch self-learning method, in particular to an intelligent substation switch with a self-learning port.
Background
The communication network of the intelligent transformer substation is more and more important, and the safe and reliable operation of the transformer substation is concerned. However, the existing switch topology searching method or tool cannot dynamically acquire the topology relationship of the entire intelligent substation network and the equipment, and particularly, the topology relationship between the switch and the connected IED is difficult to identify. In the processes of new building, reconstruction, extension, operation and maintenance of the intelligent substation, a network topological structure is changed frequently, and the topological state of a whole substation network system needs to be mastered in real time, but an effective method and an effective tool are not available at present to dynamically reflect the states of a substation network and an equipment topological structure. Therefore, the method and the tool capable of dynamically identifying the topology of the intelligent substation network equipment can be helpful for improving the operation management level of the intelligent substation network equipment.
The method comprises the steps of identifying a device connected with a port according to a message block received by the port of the switch, judging what information the device connected with the port should receive by combining the SCD characteristic of the intelligent substation and the receiving and sending correlation of the port message, identifying the Mac address of equipment connected with each port by combining the functions of IP learning, IP aging and the like of the switch, carrying out self-learning of VLAN by combining the SCD and the identified device condition, and finally realizing the learning of the condition of each port of the switch of the intelligent substation.
Disclosure of Invention
Aiming at the defects of the functions of the existing intelligent substation switch, the intelligent substation switch scheme with the self-learning port is adopted to judge what information should be received, so that automatic identification and learning of an IED device are realized, and the purpose is to provide the intelligent substation switch with the self-learning port, so that the problems are solved.
The invention is realized by the following technical scheme:
a port self-learning intelligent substation switch, the method comprises the following steps:
s1: the method comprises the following steps that a switch receives an SCD file, automatically analyzes the SCD file, and analyzes the connection relation of various devices; s2: identifying a Mac address of a port through IP learning and IP aging functions of the switch, and acquiring switch information and a communication port state through an SNMP (simple network management protocol) of the switch; s3: comparing and analyzing whether the actual receiving and sending conditions of each port of the access switch are sending only and not receiving, receiving only and not sending or sending and receiving; if the port transceiving status is transmitting only and no receiving, step S4 is entered, if the port transceiving status is receiving only and no transmitting is entered step S5, if the port transceiving status is transmitting and receiving, step S6 is entered; s4: when the equipment connected with the port is only transmitting but not receiving, the switch analyzes and judges the device connected with the port according to the message block received by the port of the switch, and the switch automatically shields the information transmitted to the device; s5: when the equipment connected with the port only receives and does not transmit, the manual configuration is supported, and the switch learns the information which should be received by the connecting device according to the manual configuration condition and the analyzed sending and receiving relation on the SCD file; s6: when the equipment connected with the port is both sending and receiving, the switch analyzes and judges the device connected with the port according to the message block received by the switch port, and then the connection relation of each device in the SCD file automatically analyzed by the switch is combined, so that the information which the device should receive is judged. At present, a traditional intelligent substation switch generates an IED device port table carrying network topology information and device connection conditions through SCD file parsing and switch port table statistics. And acquiring the neighborhood information table of each switch through the SNMP, and analyzing the connection relation between the switches on the network according to the neighborhood information table of the switch to generate a network topology map of the switch. Or the MAC address is used as an external key to match with a switch MAC address forwarding table, a section data message and an intelligent substation configuration file, and the topological relation between a two-layer switch and connected intelligent electronic equipment (IED) in the substation is dynamically acquired. And analyzing information of each Intelligent Electronic Device (IED) in the switch by analyzing the optical fiber physical circuit file (SPCD) and the substation configuration description file (SCD) to establish a port topological relation of the switch. However, the method of identifying the intelligent electronic device IED connected to each port through the correlation between the SCD characteristics of the intelligent station and the port message transmission and reception is not sufficient.
Aiming at the defects of the functions of the existing intelligent substation switch, the intelligent substation switch scheme with self-learning ports is adopted: when the optical port connected to the switch belongs to different devices, a message block is sent from the different devices, and it is not clear what device is at first, the sent message is used to determine why the device is, and in combination with the connection relationship among the devices in the SCD file analyzed by the switch, the access switch port transceiving behavior is as follows: and some ports only transmit and do not receive, and some ports only receive and do not transmit. And judging what information should be received by combining the situations, and realizing automatic identification and learning of the IED device.
Furthermore, according to the SCD and the condition of the device connected with the identified port, the VLAN is automatically identified, the exchanger realizes the automatic VLAN allocation through self-learning, and the message control condition is more effective on the basis of a simple VLAN division function.
Further, in step S1, VLAN automatic identification is performed according to the SCD and the identified device condition, and the switch realizes VLAN automatic assignment through self-learning.
Furthermore, when a port is divided into VLANs, but the port does not need to receive a message block according to the SCD and the identified device condition, the message after VLAN division still enters the port, and the switch automatically shields the message received by the port.
Further, the connected device in step S4 does not receive but belongs to the VLAN port, and at this time, the device may also be sent information, but the SCD and the device condition determine that the device does not receive the packet block, and the switch automatically masks the packet sent by the port.
Compared with the prior art, the invention has the following advantages and beneficial effects: from the angle of the mutual relation between the SCD characteristics of the intelligent substation and the message receiving and sending of the ports, the analysis and judgment of the devices connected with the ports of the switch are more facilitated by combining the field condition, the automatic VLAN distribution is realized by the switch through self-learning, the message control condition is more effective, the operation efficiency of the intelligent substation is improved, and the abnormal analysis and fault diagnosis work of the intelligent substation is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a diagram: and judging the condition of the device connected with the port.
FIG. 2 is a diagram of: the switch port VLAN auto-assignment map.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1, the method of the invention for a port self-learning intelligent substation switch comprises the following steps:
s1: the method comprises the following steps that a switch receives an SCD file, automatically analyzes the SCD file, and analyzes the connection relation of various devices; s2: identifying a Mac address of a port through IP learning and IP aging functions of the switch, and acquiring switch information and a communication port state through an SNMP (simple network management protocol) of the switch; s3: comparing and analyzing whether the actual receiving and sending conditions of each port of the access switch are sending only and not receiving, receiving only and not sending or sending and receiving; if the port transceiving status is transmitting only and no receiving, step S4 is entered, if the port transceiving status is receiving only and no transmitting is entered step S5, if the port transceiving status is transmitting and receiving, step S6 is entered; s4: when the equipment connected with the port is only transmitting but not receiving, the switch analyzes and judges the device connected with the port according to the message block received by the port of the switch, and the switch automatically shields the information transmitted to the device; s5: when the equipment connected with the port only receives and does not transmit, the manual configuration is supported, and the switch learns the information which should be received by the connecting device according to the manual configuration condition and the analyzed sending and receiving relation on the SCD file; s6: when the equipment connected with the port is both sending and receiving, the switch analyzes and judges the device connected with the port according to the message block received by the switch port, and then the connection relation of each device in the SCD file automatically analyzed by the switch is combined, so that the information which the device should receive is judged. At present, a traditional intelligent substation switch generates an IED device port table carrying network topology information and device connection conditions through SCD file parsing and switch port table statistics. And acquiring the neighborhood information table of each switch through the SNMP, and analyzing the connection relation between the switches on the network according to the neighborhood information table of the switch to generate a network topology map of the switch. Or the MAC address is used as an external key to match with a switch MAC address forwarding table, a section data message and an intelligent substation configuration file, and the topological relation between a two-layer switch and connected intelligent electronic equipment (IED) in the substation is dynamically acquired. And analyzing information of each Intelligent Electronic Device (IED) in the switch by analyzing the optical fiber physical circuit file (SPCD) and the substation configuration description file (SCD) to establish a port topological relation of the switch. However, the method of identifying the intelligent electronic device IED connected to each port through the correlation between the SCD characteristics of the intelligent station and the port message transmission and reception is not sufficient.
Aiming at the defects of the functions of the existing intelligent substation switch, the intelligent substation switch scheme with self-learning ports is adopted: when the optical port connected to the switch belongs to different devices, a message block is sent from the different devices, and it is not clear what device is at first, the sent message is used to determine why the device is, and in combination with the connection relationship among the devices in the SCD file analyzed by the switch, the access switch port transceiving behavior is as follows: and some ports only transmit and do not receive, and some ports only receive and do not transmit. And judging what information should be received by combining the situations, and realizing automatic identification and learning of the IED device.
The technical scheme for judging the network communication problem of the intelligent substation is that the switch analyzes the SCD file and analyzes the connection relation of various devices. And identifying the Mac address of the equipment connected with the port by combining the functions of IP learning, IP aging and the like of the switch, and acquiring the information of the switch and the state of the communication port through the SNMP simple network management protocol of the switch. The actual receiving and sending conditions of each port of the access switch are monitored to be only sending and not receiving, only receiving and not sending, or sending and receiving (excluding the data which is sent by the device for only receiving and not sending and is used for contact at ordinary times). When the device connected with the port is both sending and receiving, the switch analyzes and judges the device connected with the port through the message block received by the switch port, and then the switch automatically analyzes the connection relation of each device in the SCD file, so as to judge what information the device should receive. When the equipment connected with the port is only transmitting but not transmitting, the device connected with the port is analyzed and judged through the message block received by the port of the switch, and the switch automatically shields the information transmitted to the device. When the equipment connected with the port is only receiving and not transmitting, the device is not known, manual configuration is supported, and the switch learns what information the connecting device should receive according to the manual configuration condition and the transmitting and receiving relation on the analyzed SCD file. The self-learning of the switch is realized in an automatic and manual mode under the condition. According to the SCD and the recognized device condition, the VLAN is automatically recognized, the exchanger can realize the automatic VLAN distribution through self-learning, when a port is divided into the VLAN, the port is judged not to receive the message according to the SCD and the recognized device condition, and the message still enters the port after the VLAN division; and some information devices do not receive but belong to this VLAN port (e.g., the merging unit does not receive GOOSE) or are sent, but do not need to receive this packet block according to SCD and device conditions. Under the two conditions, the switch automatically shields the VLAN according to the port, the function that the switch replaces the VLAN is achieved, and the message control condition is more effective.
According to the SCD and the condition of the device connected with the identified port, the VLAN is automatically identified, the exchanger realizes the automatic VLAN allocation through self-learning, and the message control condition is more effective on the basis of a simple VLAN division function.
Step S1 is to automatically identify the VLAN according to the SCD and the identified device condition, and the switch realizes the VLAN automatic allocation through self-learning. When some port is divided into VLAN, but the port does not need to receive message block according to SCD and recognized device condition, the message will still enter the port after VLAN division, and the exchanger automatically shields the message received by the port. The connected device in step S4 does not receive but belongs to the VLAN port, and at this time, the device may also be sent information, but the SCD and the device condition determine that the device does not receive the packet block, and the switch automatically masks the packet sent by the port. Compared with the prior art, the invention has the following advantages and beneficial effects: from the angle of the mutual relation between the SCD characteristics of the intelligent substation and the message receiving and sending of the ports, the analysis and judgment of the devices connected with the ports of the switch are more facilitated by combining the field condition, the automatic VLAN distribution is realized by the switch through self-learning, the message control condition is more effective, the operation efficiency of the intelligent substation is improved, and the abnormal analysis and fault diagnosis work of the intelligent substation is facilitated.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. The port self-learning intelligent substation switch is characterized in that a self-learning method of the substation switch comprises the following steps:
s1: the method comprises the following steps that a switch receives an SCD file, automatically analyzes the SCD file, and analyzes the connection relation of various devices;
s2: identifying a Mac address of a port through IP learning and IP aging functions of the switch, and acquiring switch information and a communication port state through an SNMP (simple network management protocol) of the switch;
s3: comparing and analyzing whether the actual receiving and sending conditions of each port of the access switch are sending only and not receiving, receiving only and not sending or sending and receiving; if the port transceiving status is transmitting only and no receiving, step S4 is entered, if the port transceiving status is receiving only and no transmitting is entered step S5, if the port transceiving status is transmitting and receiving, step S6 is entered;
s4: when the equipment connected with the port is only transmitting but not receiving, the switch analyzes and judges the device connected with the port according to the message block received by the port of the switch, and the switch automatically shields the information transmitted to the device;
s5: when the equipment connected with the port only receives and does not transmit, the manual configuration is supported, and the switch learns the information which should be received by the connecting device according to the manual configuration condition and the analyzed sending and receiving relation on the SCD file;
s6: when the equipment connected with the port is both sending and receiving, the switch analyzes and judges the device connected with the port according to the message block received by the switch port, and then the connection relation of each device in the SCD file automatically analyzed by the switch is combined, so that the information which the device should receive is judged.
2. The port self-learning intelligent substation switch of claim 1, wherein step S1 is for automatic identification of VLAN according to SCD and identified device condition, and the switch realizes VLAN automatic assignment by self-learning.
3. The port self-learning intelligent substation switch according to claim 2, wherein when a port is divided into VLANs, but it is determined that the port does not need to receive a packet block according to the SCD and the recognized device condition, the packet still enters the port after VLAN division, and the switch automatically masks the packet received by the port.
4. The port self-learning intelligent substation switch according to claim 1, wherein the connected device in step S4 does not receive but belongs to the VLAN port, and the device may be sent, but the device does not receive the message block as determined by the SCD and the device condition, and the switch automatically masks the message sent by the port.
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| CN201811226345.3A CN109587025B (en) | 2018-10-19 | 2018-10-19 | Port self-learning intelligent substation switch |
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| CN110138616A (en) * | 2019-05-22 | 2019-08-16 | 国电南瑞南京控制系统有限公司 | A kind of intelligent substation switch IED facility information learning method |
| CN110572381A (en) * | 2019-08-30 | 2019-12-13 | 北京科东电力控制系统有限责任公司 | intelligent learning system and method applied to electric power safety protection device |
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