KR20170008913A - Iec 61850 communication duplexe thernet module for digital protective relay - Google Patents

Iec 61850 communication duplexe thernet module for digital protective relay Download PDF

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Publication number
KR20170008913A
KR20170008913A KR1020150099734A KR20150099734A KR20170008913A KR 20170008913 A KR20170008913 A KR 20170008913A KR 1020150099734 A KR1020150099734 A KR 1020150099734A KR 20150099734 A KR20150099734 A KR 20150099734A KR 20170008913 A KR20170008913 A KR 20170008913A
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South Korea
Prior art keywords
ethernet
address
ethernet mac
communication
destination address
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KR1020150099734A
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Korean (ko)
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김현성
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현대중공업 주식회사
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Publication of KR20170008913A publication Critical patent/KR20170008913A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/26—Special purpose or proprietary protocols or architectures
    • 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]
    • H04L12/42—Loop networks
    • H04L61/6022—

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The present invention relates to an Ethernet module for duplicating IEC 61850 communication for a digital protection relay. An Ethernet module for duplicating IEC 61850 communication for a digital protection relay according to an embodiment of the present invention comprises: a first Ethernet packet address analysis unit which analyzes whether a first Ethernet MAC address of a protection relay is identical to a first Ethernet MAC destination address received from the outside; a second Ethernet packet address analysis unit which analyzes whether a second Ethernet MAC address of the protection relay is identical to a second Ethernet MAC destination address received from the outside; and a firmware operation unit which provides outputs of the respective first and second Ethernet packet address analysis units to a CPU main core. In this case, the first and second Ethernet packet address analysis units share the first and second Ethernet MAC destination addresses with each other.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an IEC 61850 communication redundant Ethernet module for digital protection relays,

The present invention relates to an IEC 61850 communications redundant Ethernet module for digital protection relays.

Since the role of digital protection relay in substation automation is important, the international standard IEC 61850 communication method is gradually spreading in advanced countries and also in Korea.

Since the Ethernet based communication method is used, the related reliability problem becomes a constant issue, and various technologies for communication redundancy are being standardized.

Conventional analog relays are cheap, but they are limited to utilize various relay functions and are difficult to apply to automation. However, prior to convenience through automation, it is of utmost priority to ensure the stability of power facilities so as to be free from ripple effects caused by electric power accidents.

Digital protection relays that support IEC61850 communication should transmit signals to communication in order to judge the power failure and to perform control operation. If there is a problem in communication operation, a power failure such as a blackout occurs immediately.

Therefore, in order to increase the stability of communication, communication duplication technology is absolutely important, but in Korea, only a simple type of duplication communication technology is applied.

Korean Patent Laid-Open Publication No. 10-2009-0123892 (title of invention: RSTP processing method)

In order to solve the conventional problems, in order to apply RSTP (Rapid Spanning Tree Protocol, IEEE 802.1W) to the international standard IEC 61850 communication redundancy for substation automation, an embodiment of the present invention is applied to an Ethernet address filtering technique And to provide an IEC 61850 communication redundant Ethernet module for digital protection relays to which the present invention is applied.

The IEC 61850 communication redundant Ethernet module for the digital protection relay according to an embodiment of the present invention includes a first Ethernet packet address analyzing unit for analyzing whether the first Ethernet MAC address of the protection relay matches the first Ethernet MAC destination address received from the outside, part; A second Ethernet packet address analyzer for analyzing whether the second Ethernet MAC address of the protection relay and the externally received second Ethernet MAC destination address match; And a firmware driver for providing an output of each of the first Ethernet packet address analyzer and the second Ethernet packet address analyzer to a CPU main core, wherein the first Ethernet packet address analyzer and the second Ethernet packet address analyzer Wherein each of the analysis units shares a first Ethernet MAC destination address and the second Ethernet MAC destination address.

In one embodiment, the IEC 61850 communications redundant Ethernet module for the digital protection relay further comprises a shared memory for storing the first Ethernet MAC destination address and the second Ethernet MAC destination address provided from the protection relay.

In one embodiment, the first Ethernet packet address analyzer may provide the first Ethernet MAC destination address to the firmware driver when the first Ethernet MAC address and the first Ethernet MAC destination address are the same, To the second Ethernet packet address analyzer.

In one embodiment, the first Ethernet packet address analyzing unit includes a discard unit for removing the returned first Ethernet MAC destination address when returning the first Ethernet MAC destination address provided to the second Ethernet packet address analyzing unit .

In one embodiment, the second Ethernet packet address analyzer may provide the second Ethernet MAC destination address to the firmware driver when the second Ethernet MAC address and the second Ethernet MAC destination address are the same, To the first Ethernet packet address analyzer.

In one embodiment, the second Ethernet packet address analyzing unit includes a discard unit for removing the returned second Ethernet MAC address when returning the second Ethernet MAC address provided to the first Ethernet packet address analyzing unit.

The CPU according to an embodiment of the present invention includes the IEC 61850 communication redundant Ethernet module for the digital protection relay according to any one of claims 1 to 6.

The IEC 61850 communication redundant Ethernet module for digital protection relays according to an embodiment of the present invention implements the same performance RSTP (Rapid Spanning Tree Protocol, IEEE 802.1W) communication method without external parts such as FPGA (Field-Programmable Gate Array) .

1 is a block diagram of an IEC 61850 communication redundant Ethernet module for a digital protection relay in accordance with an embodiment of the present invention.
FIGS. 2A to 2D are diagrams illustrating first to fourth embodiments of the communication packet processing method of the communication redundancy Ethernet module for digital protection relay shown in FIG. 1. FIG.
3 is an exemplary diagram illustrating a CPU having IEC 61850 communication redundancy Ethernet module for the digital protection relay shown in FIG.
4 is a configuration diagram of a performance test environment for testing the performance of the communication redundant Ethernet module for the digital protection relay shown in FIG.
5 is a graph showing the communication performance of the Ethernet module A1 to which the FPGA is applied and the communication performance of the communication duplication Ethernet module A2 of the present invention shown in FIG.

It is noted that the technical terms used herein are used only to describe specific embodiments and are not intended to limit the invention. It is also to be understood that the technical terms used herein are to be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, Should not be construed to mean, or be interpreted in an excessively reduced sense. Further, when a technical term used herein is an erroneous technical term that does not accurately express the spirit of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art are replaced. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Also, the singular forms "as used herein include plural referents unless the context clearly dictates otherwise. In this application, the term "comprising" should not be construed as necessarily including the various elements or steps described in the specification, and some of the elements or portions thereof may not be included, Or < / RTI > additional elements or steps.

Further, the suffix "part" for a component used in the present specification is given or mixed in consideration of ease of specification, and does not have a meaning or role that is different from itself.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

Hereinafter, an IEC 61850 communication redundant Ethernet module for a digital protection relay according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of an IEC 61850 communication redundant Ethernet module for a digital protection relay in accordance with an embodiment of the present invention.

1, an IEC 61850 communication redundant Ethernet module 100 for a digital protection relay according to an embodiment of the present invention includes a first Ethernet packet address analyzer 110, a second Ethernet packet address analyzer 120 And a firmware driver 130.

Also, the IEC 61850 communication redundant Ethernet module 100 for digital protection relay according to an embodiment of the present invention includes a first Ethernet MAC destination address (MAC 1 AD) and a second Ethernet MAC destination (MAC 2 AD) and stores the stored first Ethernet MAC destination address (MAC 1 AD) and the second Ethernet MAC destination address (MAC 2 AD) in the first Ethernet packet address analyzer 110, the second Ethernet packet address The address analyzer 120 may share the shared memory 140 with each other.

More specifically, the first Ethernet packet address analyzer 110 performs a function of analyzing whether the first Ethernet MAC address of the protection relay is identical to the first Ethernet MAC destination address (MAC 1 AD) received from the outside .

For example, when the first Ethernet MAC address and the first Ethernet MAC destination address (MAC 1 AD) are the same, the first Ethernet packet address analyzer 110 transmits the first Ethernet MAC destination address (MAC 1 AD) To the firmware driver 130, and provides the second Ethernet packet address to the second Ethernet packet address analyzer 120 if it is different.

Also, the first Ethernet packet address analyzer 110 provides the firmware packet to the firmware driver 130 when the communication packet provided by the digital protection relay is a broadcast packet.

The first Ethernet packet address analyzer 110 includes a discard unit 111. The discard unit 111 transmits the first Ethernet MAC address to the second Ethernet packet address analyzer 120, And performs a function of removing the returned first Ethernet MAC destination address (MAC 1 AD) when returning the address (MAC 1 AD).

Next, the second Ethernet packet address analyzer 120 performs a function of analyzing whether the second Ethernet MAC address of the protection relay is identical to the second Ethernet MAC destination address (MAC 2 AD) received from the outside .

The second Ethernet packet address analyzer 120 may compare the second Ethernet MAC destination address MAC 2 AD with the second Ethernet MAC address if the second Ethernet MAC address is equal to the second Ethernet MAC destination address MAC 2 AD, And provides it to the first Ethernet packet address analyzer 110 if the address is different. Also, the second Ethernet packet address analyzer 120 provides the firmware packet to the firmware driver 130 when the communication packet provided by the digital protection relay is a broadcast packet.

The second Ethernet packet address analyzing unit 120 includes a discard unit 121 and receives the second Ethernet MAC destination address MAC 2AD provided to the first Ethernet packet address analyzing unit 110 , It performs a function of removing the returned second communication MAC address (MAC 2 AD).

Next, the firmware driver 130 provides the communication packets output from the first Ethernet packet address analyzer 110 and the second Ethernet packet address analyzer 120 to the CPU main core.

For example, if the Ethernet packet received by the first Ethernet packet address analyzer 110 is compared with the communication MAC address and delivered to the CPU main core in real time, then the second Ethernet packet address analyzer 120 sends a second And transmits the packet to the communication port of the second Ethernet packet address analyzer 120 after transmitting the packet to the connected shared memory in real time without spanning the main core. The same operation is also performed in the case of the Ethernet packet received by the second Ethernet packet address analyzing unit 120.

FIGS. 2A to 2D are first to fourth embodiments of a communication packet processing method of the communication redundancy Ethernet module for digital protection relay shown in FIG.

[First Embodiment]

Referring to FIG. 2A, in the first embodiment, the first Ethernet MAC address and the first Ethernet MAC destination address provided to the communication redundant Ethernet module 100 for the digital protection relay are the same, and the second Ethernet MAC address, And a communication packet when the second Ethernet MAC destination address is the same.

[Second Embodiment]

Referring to FIG. 2B, in the second embodiment, the first Ethernet MAC address and the first Ethernet MAC destination address provided to the communication redundancy Ethernet module 100 for the digital protection relay are the same, and the second Ethernet MAC address, And the second Ethernet MAC destination address are different from each other.

[Third Embodiment]

Referring to FIG. 2C, in the third embodiment, the first Ethernet MAC address and the first Ethernet MAC destination address provided to the communication redundant Ethernet module 100 for the digital protection relay are different from each other, and the second Ethernet MAC address And processing the communication packet when the second Ethernet MAC destination address is the same.

[Fourth Embodiment]

Referring to FIG. 2D, the fourth embodiment differs from the first Ethernet MAC address and the first Ethernet MAC destination address provided in the communication redundancy Ethernet module 100 for the digital protection relay, and the second Ethernet MAC address And processing the communication packet when the second Ethernet MAC destination address is different from each other.

3 is a block diagram showing a CPU having a communication redundancy Ethernet module for the digital protection relay shown in FIG.

3, the communication redundant Ethernet module for a digital protection relay according to an exemplary embodiment of the present invention is located between a session / transmission network layer and a physical layer of a CPU and has a function of replacing a data link processing function of the CPU .

Here, the data link process determines an MAC address and a destination address of an Ethernet packet, and determines whether to forward the received Ethernet packet to the CPU core or another Ethernet packet analyzer.

4 is a configuration diagram of a performance test environment for testing the performance of the communication redundant Ethernet module for the digital protection relay shown in FIG.

5 is a graph illustrating the communication performance of the Ethernet module A1 to which the FPGA is applied and the communication performance of the communication duplexing Ethernet module of the present invention shown in FIG.

Referring to FIG. 4, in order to verify the performance of the communication redundancy Ethernet module for a digital protection relay according to an embodiment of the present invention, all of the digital protection relays (D1 to D18) and two L2 switches are connected to a ring topology Respectively.

Here, A1 is an Ethernet module to which an FPGA is applied, and A2 is a communication redundant Ethernet module which is an embodiment of the present invention.

In the case of the Ethernet module A1 to which the FPGA is applied, as shown in (a) of FIG. 5, when the communication packet having the data size of 2000 bytes is transmitted at intervals of 10 [ms] ~ 1.42 [ms] and the packet loss rate was 0% for 1 minute.

5B, in the case of the communication redundant Ethernet module A2 according to the present invention, the response speed is about 1.06 to 1.46 [ms], and the packet loss rate is 0% for 1 minute. ) And the same performance was obtained.

In the meantime, a component or 'unit' or block used in an embodiment of the present invention may be implemented in software (such as a task, a class, a subroutine, a process, an object, an execution thread, software). The components or parts may be included in a computer-readable storage medium, or a part of the components may be distributed to a plurality of computers

Therefore, the IEC 61850 communication redundant Ethernet module for the digital protection relay according to the embodiment of the present invention has the advantage that the IEC 61850 communication redundant Ethernet module for the digital protection relay can realize the same performance RSTP communication without external parts such as the FPGA .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but various changes and modifications may be made without departing from the scope of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but are intended to illustrate and not limit the scope of the technical spirit of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

100: IEC 61850 communication redundant Ethernet module for digital protection relay
110: First Ethernet packet address analyzing unit
111:
120: second Ethernet packet address analyzing unit
121:
130: Firmware drive unit
140: Shared memory

Claims (7)

A first Ethernet packet address analyzer for analyzing whether the first Ethernet MAC address of the protection relay and the externally received first Ethernet MAC destination address match;
A second Ethernet packet address analyzer for analyzing whether the second Ethernet MAC address of the protection relay and the externally received second Ethernet MAC destination address match; And
And a firmware driver for providing the output of the first Ethernet packet address analyzer and the second Ethernet packet address analyzer to a CPU main core,
Wherein the first Ethernet packet address analyzer and the second Ethernet packet address analyzer share a first Ethernet MAC destination address and a second Ethernet MAC destination address, respectively.
The method according to claim 1,
And a shared memory for storing the first Ethernet MAC destination address and the second Ethernet MAC destination address provided from the protection relay. ≪ RTI ID = 0.0 > IEC 61850 < / RTI >
The method according to claim 1,
Wherein the first Ethernet packet address analyzer comprises:
And providing the first Ethernet MAC destination address to the firmware driver when the first Ethernet MAC address and the first Ethernet MAC destination address are identical to each other and providing the first Ethernet MAC destination address to the firmware driver when the first Ethernet MAC address is identical to the first Ethernet MAC destination address, IEC 61850 communications redundant Ethernet module.
The method of claim 3,
Wherein the first Ethernet packet address analyzer comprises:
And a discard unit for removing the returned first Ethernet MAC destination address when the first Ethernet MAC destination address provided to the second Ethernet packet address analyzing unit is returned.
The method according to claim 1,
Wherein the second Ethernet packet address analyzer comprises:
Providing the second Ethernet MAC destination address to the firmware driver if the second Ethernet MAC address is identical to the second Ethernet MAC destination address, and if the second Ethernet MAC destination address is different from the second Ethernet MAC destination address, IEC 61850 communications redundant Ethernet module.
6. The method of claim 5,
Wherein the second Ethernet packet address analyzer comprises:
And a discard unit for removing the returned second Ethernet MAC address when the second Ethernet MAC address provided to the first Ethernet packet address analyzing unit is returned to the IEC 61850 communication redundant Ethernet module.
A CPU having an IEC 61850 communication redundant Ethernet module for digital protection relays as claimed in any one of claims 1 to 6.
KR1020150099734A 2015-07-14 2015-07-14 Iec 61850 communication duplexe thernet module for digital protective relay KR20170008913A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101884120B1 (en) * 2017-03-23 2018-08-30 엘에스산전 주식회사 Duplex communication module possible fast switching and protection relay system using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090123892A (en) 2007-04-25 2009-12-02 가부시키가이샤 야마다케 Rstp processing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090123892A (en) 2007-04-25 2009-12-02 가부시키가이샤 야마다케 Rstp processing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101884120B1 (en) * 2017-03-23 2018-08-30 엘에스산전 주식회사 Duplex communication module possible fast switching and protection relay system using the same

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