CN113839791A - Message forwarding method and system and intelligent substation process layer switch - Google Patents

Message forwarding method and system and intelligent substation process layer switch Download PDF

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Publication number
CN113839791A
CN113839791A CN202010510448.3A CN202010510448A CN113839791A CN 113839791 A CN113839791 A CN 113839791A CN 202010510448 A CN202010510448 A CN 202010510448A CN 113839791 A CN113839791 A CN 113839791A
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China
Prior art keywords
message
rationality
responding
ports
port
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Pending
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CN202010510448.3A
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Chinese (zh)
Inventor
杨贵
吕航
代小翔
李力
文继锋
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NR Electric Co Ltd
NR Engineering Co Ltd
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NR Electric Co Ltd
NR Engineering Co Ltd
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Priority to CN202010510448.3A priority Critical patent/CN113839791A/en
Publication of CN113839791A publication Critical patent/CN113839791A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H04L63/101—Access control lists [ACL]
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention discloses a message forwarding method, which comprises the steps of obtaining a message passing through a message port; comparing the message with a white list corresponding to a preset message port; responding to the comparison, and checking the rationality of the message; and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning. Corresponding systems and switches are also disclosed. The invention detects SV and GOOSE messages passing through the port, can detect illegal message intrusion faults, and sends alarm information to the monitoring host to facilitate the positioning of faults by operation and maintenance personnel, thereby reducing fault troubleshooting period, reducing the workload of manual operation and maintenance and improving the operation and maintenance level of the whole transformer substation.

Description

Message forwarding method and system and intelligent substation process layer switch
Technical Field
The invention relates to a message forwarding method and system and an intelligent substation process layer switch, and belongs to the field of intelligent substation process layers.
Background
The intelligent substation process layer network is composed of a power system special switch which accords with the technical specification of DLT 1912-2018 intelligent substation Ethernet switch and is used for transmitting SV messages sent by process layer equipment and GOOSE messages sent by process layer equipment and bay layer equipment. In order to monitor a network, monitoring of a process layer switch by an MMS (Manufacturing message specification) protocol has been implemented, and monitoring functions of information such as a network port state, port flow statistics, port transmission and reception message statistics, power loss, SFP module transmission and reception optical power, motherboard voltage, motherboard temperature, and the like are implemented. Meanwhile, in order to monitor the real-time transmission state of network message flow, a network analyzer is configured on the process layer network, all messages of the process layer network are monitored through the network analyzer, and the network analyzer is connected to a central switch of the process layer network through a gigabit port.
At present, information sent by a switch and a result analyzed by a network analyzer can not locate the specific position of a process layer network fault, and when the problems of packet loss, wrong sequence and the like of the process layer network occur, troubleshooting and elimination can not be effectively realized, so that an intelligent substation is difficult to operate and maintain, has long shortage eliminating time and consumes a large amount of manpower and material resources.
Disclosure of Invention
The invention provides a message forwarding method, a message forwarding system and an intelligent substation process layer switch, and solves the problem that a process layer network fault cannot be positioned.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a message forwarding method comprises the steps of,
acquiring a message passing through a message port;
comparing the message with a white list corresponding to a preset message port;
responding to the comparison, and checking the rationality of the message;
and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning.
The white list information in the white list includes the destination MAC address, APPID, and vlan id.
The process of performing the rationality check on the message is,
responding to that the message is an SV message, judging whether the sending interval of the SV message is a threshold value and whether the sampling sequence number is continuous, if the sending interval is not the threshold value and/or the sampling sequence number is not continuous, the rationality detection is not passed;
and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
And responding to the failure of the rationality detection, sending alarm information to the monitoring host, and logging the alarm information into a local log.
The alarm information includes alarm generation time, alarm type, multicast MAC address, APPID, and VLAN ID.
A message forwarding system, comprising,
an acquisition module: acquiring a message passing through a message port;
and a white list comparison module: comparing the message with a white list corresponding to a preset message port;
the rationality detection module: responding to the comparison, and checking the rationality of the message;
an alarm module: and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning.
The rationality detection module comprises an SV message detection module and a GOOSE message detection module;
SV message detection module: responding to that the message is an SV message, judging whether the sending interval of the SV message is a threshold value and whether the sampling sequence number is continuous, if the sending interval is not the threshold value and/or the sampling sequence number is not continuous, the rationality detection is not passed;
GOOSE message detection module: and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
The switch comprises a switching chip, a CPU, a plurality of monitoring ports, a plurality of message ports and a plurality of FPGAs (field programmable gate arrays), wherein the message ports are connected with the switching chip through the FPGAs, the FPGAs are also connected with the CPU, and a message forwarding system is installed in the FPGAs.
A switch comprising an NP, a plurality of monitoring ports and a plurality of message ports, the NP having the message forwarding system of claim 5 or 6 loaded therein.
A switch comprises a switch chip, a CPU, a plurality of monitoring ports and a plurality of message ports, wherein a message forwarding system is loaded in the switch chip.
The invention achieves the following beneficial effects: the invention detects SV and GOOSE messages passing through the port, and sends the alarm information to the monitoring host to facilitate the operation and maintenance personnel to locate faults, thereby reducing the fault troubleshooting period, reducing the workload of manual operation and maintenance and improving the operation and maintenance level of the whole transformer substation.
Drawings
FIG. 1 is a schematic diagram of a first type of switch;
fig. 2 is a schematic diagram of a second intermediate switch.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A message forwarding method comprises the following steps:
step 1, obtaining a message passing through a message port.
The messages are mainly GOOSE messages and SV messages, and the messages are divided into two paths (two paths of messages are consistent), wherein one path is forwarded normally, and the other path is detected subsequently, i.e. the obtained messages.
And 2, comparing the message with a white list corresponding to a preset message port.
The white list information in the white list comprises a target MAC address, an APPID, a VLANID and the like, a corresponding white list is preset for each message port, and the comparison is mainly carried out to determine whether the message is matched with certain white list information in the list.
Step 3, if the comparison is passed, carrying out rationality check on the message; otherwise, sending out alarm information to the monitoring host through the monitoring port, and recording the alarm information into a local log.
The alarm information includes alarm generation time, alarm type (including but not limited to message loss or wrong sequence), multicast MAC address, APPID, VLAN ID, etc.
The process of checking the reasonability of the message is as follows:
1) responding to that the message is an SV message, judging whether the sending interval of the SV message is within a threshold range (the general requirement range is 250us +/-10 us) or not and whether the sampling sequence number is continuous or not, and if the sending interval is not within the threshold range and/or the sampling sequence number is discontinuous, the rationality detection is not passed;
2) and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
And step 4, responding to the failure of the rationality detection, sending alarm information to the monitoring host for fault positioning, and recording the alarm information into a local log.
The method detects SV and GOOSE messages passing through the port, and sends the alarm information to the monitoring host to facilitate fault location of operation and maintenance personnel, thereby reducing fault troubleshooting period, reducing workload of manual operation and maintenance and improving operation and maintenance level of the whole transformer substation.
The software system corresponding to the method comprises,
an acquisition module: and acquiring the message passing through the message port.
And a white list comparison module: and comparing the message with a white list corresponding to a preset message port.
The rationality detection module: and responding to the comparison, and checking the rationality of the message.
The rationality detection module comprises an SV message detection module and a GOOSE message detection module;
SV message detection module: responding to the message as an SV message, judging whether the sending interval of the SV message is a threshold value and whether the sampling serial number is continuous, and if the sending interval is not within the range of the threshold value and/or the sampling serial number is discontinuous, the rationality detection is not passed;
GOOSE message detection module: and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
An alarm module: and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning.
As shown in fig. 1, a switch includes a switching chip, a CPU, a plurality of FPGAs, a plurality of monitoring ports and a plurality of message ports, wherein the monitoring ports are externally connected with a monitoring host, the monitoring ports are connected with the CPU, the CPU is connected with the switching chip, the message ports are connected with the switching chip through the FPGA, the FPGA is further connected with the CPU, and a message forwarding system is loaded in the FPGA; each message port is connected with the switching chip through one FPGA, or a plurality of message ports are connected with the switching chip through one FPGA according to the performance of the FPGA.
The message mainly has two kinds of forwarding, one is to enter the FPGA from the message port and then send to the switching chip, and the other is to reverse, that is, to transmit from the switching chip to the message port.
No matter what kind of forwarding is adopted, one path of message is directly forwarded through the FPGA, and the other path of message is processed in the FPGA (namely processed through the message forwarding method), so that whether alarm information needs to be sent or not is judged. Or directly processing the message in the process of forwarding the message without copying the message, namely judging the message while forwarding the message and sending out alarm information according to the judgment result.
As shown in fig. 2, the switch is designed as an NP (network processor), and includes an NP, a plurality of monitoring ports connected to the NP, and a plurality of message ports, and the NP is loaded with a message forwarding system.
The switch is similar to the built-in FPGA, one path of message is directly forwarded through NP and a message port, the other path of message is processed in NP (namely processed by the message forwarding method), and whether alarm information needs to be sent or not is judged. Or directly processing the message in the process of forwarding the message without copying the message, namely judging the message while forwarding the message and sending out alarm information according to the judgment result.
The switch has the same structure with the existing switch, namely comprises a switching chip, a CPU, a plurality of monitoring ports and a plurality of message ports, wherein the monitoring ports are externally connected with a monitoring host, the monitoring ports are connected with the CPU, the CPU is connected with the switching chip, the message ports are connected with the switching chip, and a message forwarding system is loaded in the switching chip.
The switch is similar to the built-in FPGA, one path of message is directly forwarded through the switch chip and the message port, the other path of message is processed in the switch chip (namely processed by the message forwarding method), and whether alarm information needs to be sent or not is judged. Or directly processing the message in the process of forwarding the message without copying the message, namely judging the message while forwarding the message and sending out alarm information according to the judgment result.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a message forwarding method.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing a message forwarding method.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.

Claims (10)

1. A message forwarding method is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
acquiring a message passing through a message port;
comparing the message with a white list corresponding to a preset message port;
responding to the comparison, and checking the rationality of the message;
and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning.
2. The message forwarding method according to claim 1, wherein: the white list information in the white list includes the destination MAC address, APPID, and vlan id.
3. The message forwarding method according to claim 1, wherein: the process of performing the rationality check on the message is,
responding to that the message is an SV message, judging whether the sending interval of the SV message is a threshold value and whether the sampling sequence number is continuous, if the sending interval is not the threshold value and/or the sampling sequence number is not continuous, the rationality detection is not passed;
and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
4. The message forwarding method according to claim 1, wherein: and responding to the failure of the rationality detection, sending alarm information to the monitoring host, and logging the alarm information into a local log.
5. The message forwarding method according to claim 1 or 4, wherein: the alarm information includes alarm generation time, alarm type, multicast MAC address, APPID, and VLAN ID.
6. A message forwarding system, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an acquisition module: acquiring a message passing through a message port;
and a white list comparison module: comparing the message with a white list corresponding to a preset message port;
the rationality detection module: responding to the comparison, and checking the rationality of the message;
an alarm module: and responding to the failure of the rationality detection, and sending alarm information to the monitoring host for fault positioning.
7. The message forwarding system according to claim 6, wherein: the rationality detection module comprises an SV message detection module and a GOOSE message detection module;
SV message detection module: responding to that the message is an SV message, judging whether the sending interval of the SV message is a threshold value and whether the sampling sequence number is continuous, if the sending interval is not the threshold value and/or the sampling sequence number is not continuous, the rationality detection is not passed;
GOOSE message detection module: and responding to the fact that the message is a GOOSE message, judging whether the stNum serial number and the sqNum serial number of each route of GOOSE message are continuous, and if not, judging that the rationality detection does not pass.
8. A switch comprises a switch chip, a CPU, a plurality of monitoring ports and a plurality of message ports, and is characterized in that: the message forwarding system further comprises a plurality of FPGAs (field programmable gate arrays), the message ports are connected with the switching chip through the FPGAs, the FPGAs are further connected with the CPU, and the message forwarding system of claim 6 or claim 7 is loaded in the FPGAs.
9. A switch comprising an NP, a plurality of monitoring ports and a plurality of message ports, characterized in that: the NP has the message forwarding system of claim 6 or 7 loaded therein.
10. A switch comprises a switch chip, a CPU, a plurality of monitoring ports and a plurality of message ports, and is characterized in that: the switching chip has the message forwarding system of claim 6 or 7 loaded therein.
CN202010510448.3A 2020-06-08 2020-06-08 Message forwarding method and system and intelligent substation process layer switch Pending CN113839791A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103312037A (en) * 2013-06-09 2013-09-18 国家电网公司 Device and method for testing pressure of intelligent substation
CN103326469A (en) * 2013-06-14 2013-09-25 广东电网公司电力科学研究院 Method and device for monitoring GOOSE communication status of intelligent substation
CN110677425A (en) * 2019-09-30 2020-01-10 华南理工大学广州学院 Firewall system matching method for matching GOOSE message
CN111082979A (en) * 2019-12-09 2020-04-28 国电南瑞南京控制系统有限公司 Intelligent substation process layer secondary circuit fault diagnosis method based on switch and fault diagnosis host

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103312037A (en) * 2013-06-09 2013-09-18 国家电网公司 Device and method for testing pressure of intelligent substation
CN103326469A (en) * 2013-06-14 2013-09-25 广东电网公司电力科学研究院 Method and device for monitoring GOOSE communication status of intelligent substation
CN110677425A (en) * 2019-09-30 2020-01-10 华南理工大学广州学院 Firewall system matching method for matching GOOSE message
CN111082979A (en) * 2019-12-09 2020-04-28 国电南瑞南京控制系统有限公司 Intelligent substation process layer secondary circuit fault diagnosis method based on switch and fault diagnosis host

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