CN109067560B - Self-description terminal plug and play method based on open communication - Google Patents
Self-description terminal plug and play method based on open communication Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 28
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- 230000007246 mechanism Effects 0.000 claims description 9
- 238000012795 verification Methods 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 206010048669 Terminal state Diseases 0.000 abstract description 5
- 230000009194 climbing Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000013507 mapping Methods 0.000 description 8
- 230000004044 response Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
- H04L41/0809—Plug-and-play configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
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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
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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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
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/164—Adaptation or special uses of UDP protocol
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- H02J13/0013—
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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
-
- 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
Abstract
The invention discloses a self-description terminal plug-and-play method based on open communication, which comprises the following steps: the power distribution terminal actively sends registration information to the power distribution master station after being powered on each time; the power distribution master station identifies and judges the registration information sent by the power distribution terminal according to the stored local power distribution terminal information, if the power distribution terminal registration information or the terminal version information is not consistent, a power distribution terminal model information file is obtained and added into the local power distribution terminal information, otherwise, when the terminal version information is consistent, no modification is performed; the power distribution master station issues a power distribution terminal model information file to be verified by the power distribution terminal; and judging whether the file version and the file CRC in the registration information of the power distribution terminal are consistent, and when the file version and the file CRC are not consistent, the power distribution master station sends a notice to the power distribution terminal to wait for configuration confirmation, downloads the latest file version and the file CRC and synchronizes to the power distribution master station. The invention combines the open communication technology with the self-description terminal state monitoring, and effectively solves the problems of climbing operation, potential safety hazard caused by the climbing operation and the like.
Description
Technical Field
The invention relates to a self-description terminal plug-and-play method based on open communication, and belongs to the technical field of power distribution automation.
Background
The Cyber-Physical Systems (CPS) of the power distribution network should have the characteristics of self-organization, self-adaptation, easy realization and the like, and a standard open communication protocol is required. Distribution automation is a part of a CPS system of a distribution network, and the existing research on open communication of the distribution network mainly solves the problem of open communication of the distribution automation.
With the increase of intelligent equipment in a power distribution network and frequent abnormal operation of a power distribution line, a large amount of configuration and maintenance work is brought, which is also a great obstacle for restricting the further development of the power distribution network automation. An open communication system is established on the basis of IEC 61850, an information communication model of the power distribution terminal is unified, workload of configuration and maintenance of the power distribution terminal is reduced, plug and play of the power distribution terminal is realized, and the method is an effective way for solving the problem. On the basis, the CPS system of the power distribution network can be comprehensively monitored.
The IEC 61850 substation communication network and system established by the International Electrotechnical Commission (IEC) is widely used in the field of substation automation. The Intelligent Electronic Device self-description system adopts a layered and distributed architecture and an object-oriented modeling method, realizes self-description of Intelligent Electronic Devices (IEDs), and provides an effective way for realizing interoperation and system seamless integration of Intelligent Electronic devices of different manufacturers. The method is a core standard for implementing the smart grid. The standard IEC 61850 applied in the field of power Distribution networks, namely IEC 6185090-6 Use of IEC 61850 for Distribution Automation Systems, is also currently formulated, and a series of relevant standards such as IEC 618507 and 430[1-2] are formulated in the future and are used for shared information model definition in the fields of demand side management, metering service, home Automation, distributed Automation and the like.
Therefore, the safe plug-and-play and intercommunication interconnection of the CPS terminal of the power distribution network is realized by researching equipment modeling, communication modeling, mapping methods, safety protection technologies and the like based on the IEC 61850 standard. Conventional monitoring data, wave recording data and configuration files are transmitted between the CPS terminal of the power distribution network and the power distribution main station by adopting Manufacturing Message Specification (MMS) mapping or IEC 608705-101/104 mapping; distributed decision real-time control data and commands are transmitted between CPS terminals of the power distribution network by adopting a GOOSE (generic object oriented substation event) technology. On the basis of a discovery/registration mechanism, a mechanism that a CPS terminal of a power distribution network is automatically discovered by a master station and adjacent terminals is researched; researching a method for self-description of CPS terminal configuration of the power distribution network; on the basis of self-discovery and self-description of the CPS terminal of the power distribution network, a plug-and-play implementation mechanism is researched.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a self-description terminal plug-and-play method based on open communication, thereby solving the problem of data definition of different manufacturers and different types of terminals accessed by a master station. An open communication system based on the IEC 61850 standard unifies the application functions of different types of terminals into a standardized object model through an information object modeling technology.
The invention specifically adopts the following technical scheme to solve the technical problems:
the self-description terminal plug and play method based on open communication comprises the following steps:
step 1, a power distribution terminal actively sends registration information to a power distribution master station every time the power distribution terminal is powered on, wherein the registration information comprises terminal version information and unique identification name information;
step 2, the power distribution master station identifies and judges the registration information sent by the power distribution terminal according to the stored local power distribution terminal information, and if the local power distribution terminal information is judged to be free of the power distribution terminal registration information or inconsistent with the terminal version information, the power distribution master station identifies and judges the registration information sent by the power distribution terminal according to the stored local power distribution terminal information
Acquiring a power distribution terminal model information file from a power distribution terminal, adding the power distribution terminal model information file into local power distribution terminal information, and entering the step 3; if the power distribution terminal registration information exists in the local power distribution terminal information and the terminal version information is consistent, the power distribution terminal model information file is not modified, and the step 4 is carried out;
step 3, the power distribution master station issues the power distribution terminal model information file to the power distribution terminal, the power distribution terminal verifies the received power distribution terminal model information file, and when the verification is successful, the power distribution terminal registration failure times are cleared and reset, and the step 1 is executed in a return mode; when the verification fails, the power distribution master station generates a warning and notifies manual debugging, and the registration failure times are cleared and reset under the manual debugging and then the step 1 is executed;
step 4, the power distribution master station judges whether the file version and the file CRC in the power distribution terminal registration information are consistent, and when the file version and the file CRC are consistent, the registration link is released to enter data interaction service; and when the file version and the file CRC are inconsistent, the power distribution master station generates a warning and notifies manual intervention, and simultaneously sends a notification to the power distribution terminal to wait for configuration confirmation, and the power distribution terminal downloads the latest file version and the latest file CRC and synchronizes the latest file version and the latest file CRC to the power distribution master station.
Further, as a preferred technical solution of the present invention: the power distribution master station in the step 1 adopts a registration mechanism of IEC 608705-101 protocol.
Further, as a preferred technical solution of the present invention: in the step 1, the power distribution terminal transmits the registration information by using a UDP protocol.
Further, as a preferred technical solution of the present invention: and step 3, comparing the registration failure times of the power distribution terminal with the set times, recording the failure reasons and the failure times by the power distribution terminal when the set times are exceeded, re-initiating a registration request by the power distribution terminal after waiting for delay, and controlling to add the error code of the last failure reason into registration information and send the registration information to the power distribution main station.
Further, as a preferred technical solution of the present invention: and step 4, the power distribution main station sends a query command to the power distribution terminal, and the power distribution terminal actively requests registration from the power distribution main station after receiving the query command.
Further, as a preferred technical solution of the present invention: and the power distribution main station sends a query command in a timing sending or manual calling mode.
By adopting the technical scheme, the invention can produce the following technical effects:
the invention is based on the IEC 61850 standard equipment modeling, communication modeling, mapping method, safety protection technology and the like, and realizes the safe plug and play and intercommunication interconnection of the CPS terminal of the power distribution network. Transmitting conventional monitoring data, wave recording data and configuration files between a CPS terminal and a power distribution main station of a power distribution network by adopting Manufacturing Message Specification (MMS) mapping or IEC 608705-101/104 mapping; distributed decision real-time control data and commands are transmitted between CPS terminals of the power distribution network by adopting a GOOSE (generic object oriented substation event) technology. Based on a discovery/registration mechanism, a mechanism that a CPS terminal of the power distribution network is automatically discovered by a master station and adjacent terminals is provided; providing a method for self-description of CPS terminal configuration of the power distribution network; on the basis of self-discovery and self-description of the CPS terminal of the power distribution network, a plug-and-play implementation mechanism is realized.
In addition, the invention combines the open communication technology with the self-description terminal state monitoring, adds the communication means and the debugging means for monitoring the self-description terminal state, effectively solves the problems of climbing operation, potential safety hazard and the like, and brings great convenience to electric power workers. Meanwhile, the power distribution terminal is developed towards the direction of intellectualization, modernization, high efficiency and humanization.
Drawings
Fig. 1 is a flow chart of a plug and play method of a self-description terminal based on open communication according to the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the invention designs a plug and play method for a self-description terminal based on open communication, the method is based on a power distribution terminal and a power distribution master station, an open communication system based on IEC 61850 standard unifies application functions of different types of terminals into a standardized object model through an information object modeling technology, and solves the problem of data definition of different types of terminals accessed by the master station from different manufacturers; by adopting an abstract communication service interface model, terminal application function data is separated from a concrete information transmission protocol, so that an open communication system can conveniently adopt the latest information transmission protocol, and the requirements of the CPS of the power distribution network and the development of network communication are met. Moreover, the invention is based on the IEC 61850 standard equipment modeling, communication modeling, mapping method, safety protection technology, etc., realizes the safe plug and play and intercommunication interconnection of the CPS terminal of the power distribution network, and the method mainly comprises the following steps:
step 1, firstly, after a power distribution terminal is powered on, physical connection is established with a power distribution main station. The power distribution main station adopts a registration mechanism of an IEC 608705-101-plus-one protocol, and the power distribution terminal actively sends registration information to the power distribution main station every time the power distribution terminal is powered on, wherein the registration information comprises terminal version information, unique identification name Information (ID) and a link address.
The ID is used as the unique identification information of the power distribution terminal; the version information is used to describe the information version of the power distribution terminal configuration file. When the configuration file of the power distribution terminal is modified, the version number is preferably changed correspondingly. The link address is the link address specified by the 101 protocol. Preferably, the power distribution terminal transmits the registration information by using a UDP protocol.
For the mode of adopting IEC 608705-104 protocol, the power distribution main station front-end processor adopts a fixed IP mode, and the power distribution terminal IP address is fixed. After the power distribution terminal is powered on, communication is initiated by the power distribution terminal, and the power distribution terminal actively sends a registration message, so that the power distribution master station can timely identify and establish connection with the power distribution terminal.
And 2, the power distribution master station identifies and judges the registration information sent by the power distribution terminal according to the stored local power distribution terminal information. According to the IEC 6185080-1 standard, an IEC 61850 model file is analyzed into an IEC 608705-104 protocol communication point table, which comprises the following specific steps:
and if the power distribution master station judges that the power distribution terminal registration information does not exist in the local power distribution terminal information, the power distribution terminal is considered to be a newly added power distribution terminal, the master station needs to add the terminal version information in the registration information sent by the terminal into the local power distribution terminal information, and after the terminal model information file is obtained and added into the local power distribution terminal information, the real-time data interaction can be carried out, namely, the step 3 is carried out.
If the power distribution master station judges that the registration information of the power distribution terminal exists in the local power distribution terminal information but the terminal version information is not consistent, the power distribution master station considers that the power distribution terminal model file is modified, the master station side needs to update the local power distribution terminal information, and after the terminal model information file is obtained and added into the local power distribution terminal information, real-time data interaction can be carried out, namely, the step 3 is carried out.
If the power distribution terminal registration information exists in the local power distribution terminal information and the terminal version information is consistent, the power distribution terminal model information file is not modified, and the step 4 can be directly carried out for real-time data interaction.
And 3, the power distribution master station issues the power distribution terminal model information file to the power distribution terminal, and the power distribution terminal verifies the received power distribution terminal model information file.
Resetting and resetting the registration failure times of the power distribution terminal when the verification is successful, and returning to execute the step 1; when the verification fails, the power distribution master station generates a warning and notifies manual debugging, and the registration failure times are cleared and reset under the manual debugging and then the step 1 is executed;
preferably, the method further comprises the steps of comparing the registration failure times of the power distribution terminal with the set times, recording the failure reasons and the failure times by the power distribution terminal when the set times are exceeded, restarting a registration request by the power distribution terminal after time delay, controlling to add error codes of the failure reasons of the last time into registration information and sending the registration information to the power distribution main station, and returning to execute the step 1. The number of failures is set to 5 in this embodiment, but is not limited to this number. And within less than 5 times, the power distribution terminal records the failure reason, records the failure times plus 1 time, and restarts a registration request after waiting for delay, and controls to add the error code of the failure reason last time into registration information to be sent to the power distribution main station, and the power distribution main station receives the error code.
And module return value judgment can be carried out in the process, the step 1 is returned to be executed when the return value reaches an expected value, otherwise, a manual operation stage is executed, and an operator is required to contact the power distribution master station to manually delete the original terminal configuration file.
Step 4, the power distribution master station judges whether the icd file version, the cid file version and the file CRC in the power distribution terminal registration information are consistent, and when the icd file version, the cid file version and the file CRC are consistent, the registration link is released, and data interaction service is started; and when the consistency is judged, the power distribution master station generates a warning and notifies manual intervention, and simultaneously sends a notification to the power distribution terminal to wait for configuration confirmation, the power distribution terminal reads the icd and cid files in the cid files, and downloads the latest cid file version and file CRC (cyclic redundancy check) and synchronizes to the power distribution master station when the cid files and the cid files are inconsistent. Then, automatic reset is performed, and the procedure returns to step 1. And, can also carry on the module and return the value to judge, when returning the value to reach the expected value, carry out the automatic reset, otherwise return to step 3; when the verification fails, the power distribution master station generates an alert and notifies the manual troubleshooting process.
And step 4, the power distribution main station sends a query command to the power distribution terminal, and the power distribution terminal actively requests registration from the power distribution main station after receiving the query command. And the power distribution main station sends a query command in a timing sending or manual calling mode. The command framing refers to the framing format of IEC 608705-104 and is transmitted by using a U frame.
The timing sending mode specifically comprises the following steps: the time interval of sending is 1 hour, and the distribution terminal receives the inquiry command, needs the timely response. Meanwhile, the running state of the power distribution terminal is detected by using the information, no response information is received, and the power distribution main station and the power distribution terminal do not communicate with each other for more than 10 minutes, so that the power distribution terminal can be considered to be in a power loss state or a running stop state.
The manual calling mode specifically comprises the following steps: after the power distribution master station is restarted or the master station is newly added, the power distribution master station is actively triggered to transmit. The power distribution terminals respond in time after receiving the response, and all the power distribution terminals which are operated at present can be found in the mode.
In summary, the invention is based on the equipment modeling, communication modeling, mapping method, safety protection technology and the like of IEC 61850 standard, realizes the safe plug and play and intercommunication interconnection of the CPS terminal of the power distribution network, combines the open communication technology with the self-description terminal state monitoring, increases the self-description terminal state monitoring communication means and debugging means, effectively solves the problems of climbing operation and potential safety hazard brought by the climbing operation, and brings great convenience to power workers.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (5)
1. The self-description terminal plug and play method based on open communication is characterized by comprising the following steps:
step 1, a power distribution terminal actively sends registration information to a power distribution master station every time the power distribution terminal is powered on, wherein the registration information comprises terminal version information and unique identification name information;
step 2, the power distribution master station identifies and judges the registration information sent by the power distribution terminal according to the stored local power distribution terminal information, if the local power distribution terminal information is judged to be free of the power distribution terminal registration information or inconsistent with the terminal version information, a power distribution terminal model information file is obtained from the power distribution terminal and added to the local power distribution terminal information, and the step 3 is carried out; if the power distribution terminal registration information exists in the local power distribution terminal information and the terminal version information is consistent, the power distribution terminal model information file is not modified, and the step 4 is carried out;
step 3, the power distribution master station issues the power distribution terminal model information file to the power distribution terminal, the power distribution terminal verifies the received power distribution terminal model information file, and when the verification is successful, the power distribution terminal registration failure times are cleared and reset, and the step 1 is executed in a return mode; when the verification fails, the power distribution master station generates a warning and notifies manual debugging, and the registration failure times are cleared and reset under the manual debugging and then the step 1 is executed; according to the comparison between the registration failure times of the power distribution terminal and the set times, when the set times are exceeded, the power distribution terminal records the failure reasons and the failure times, re-initiates a registration request to be delayed and controls the error code of the last failure reason to be added into registration information and sends the registration information to the power distribution main station;
step 4, the power distribution master station judges whether the file version and the file CRC in the power distribution terminal registration information are consistent, and when the file version and the file CRC are consistent, the registration link is released to enter data interaction service; and when the file version and the file CRC are inconsistent, the power distribution master station generates a warning and notifies manual intervention, and simultaneously sends a notification to the power distribution terminal to wait for configuration confirmation, and the power distribution terminal downloads the latest file version and the latest file CRC and synchronizes the latest file version and the latest file CRC to the power distribution master station.
2. The open communication based self-describing terminal plug and play method according to claim 1, characterized in that: the power distribution master station in the step 1 adopts a registration mechanism of IEC 608705-101 protocol.
3. The open communication based self-describing terminal plug and play method according to claim 1, characterized in that: in the step 1, the power distribution terminal transmits the registration information by using a UDP protocol.
4. The open communication based self-describing terminal plug and play method according to claim 1, characterized in that: and step 4, the power distribution main station sends a query command to the power distribution terminal, and the power distribution terminal actively requests registration from the power distribution main station after receiving the query command.
5. The open communication based self-describing terminal plug and play method according to claim 4, characterized in that: and the power distribution main station sends a query command in a timing sending or manual calling mode.
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| CN112054931A (en) * | 2020-09-09 | 2020-12-08 | 海南电网有限责任公司 | Master station access method suitable for modeling distribution network terminal source end |
| CN114400624B (en) * | 2022-02-15 | 2023-08-04 | 广东电网有限责任公司江门供电局 | Method for polling version and faults of power distribution equipment, power distribution terminal and power distribution main station |
| CN116566049A (en) * | 2023-05-04 | 2023-08-08 | 东方电子股份有限公司 | Plug-and-play method based on distributed station terminal |
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| CN103888291A (en) * | 2014-02-24 | 2014-06-25 | 北京科东电力控制系统有限责任公司 | Power distribution terminal plug-and-play communication method based on IEC 61850 standard |
| CN105305418A (en) * | 2015-10-10 | 2016-02-03 | 国家电网公司 | Power distribution terminal self-description method based on IEC61850 standard |
| CN105389166A (en) * | 2015-10-21 | 2016-03-09 | 珠海许继电气有限公司 | Automatic access method for self-describing plug-and-play power distribution terminal |
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| DE102011115809A1 (en) * | 2011-10-13 | 2013-04-18 | Abb Ag | Method for configuring a control device |
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|---|---|---|---|---|
| CN103888291A (en) * | 2014-02-24 | 2014-06-25 | 北京科东电力控制系统有限责任公司 | Power distribution terminal plug-and-play communication method based on IEC 61850 standard |
| CN105305418A (en) * | 2015-10-10 | 2016-02-03 | 国家电网公司 | Power distribution terminal self-description method based on IEC61850 standard |
| CN105389166A (en) * | 2015-10-21 | 2016-03-09 | 珠海许继电气有限公司 | Automatic access method for self-describing plug-and-play power distribution terminal |
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