CN115714455A - Method and system for realizing distributed DTU plug and play - Google Patents
Method and system for realizing distributed DTU plug and play Download PDFInfo
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Abstract
The invention discloses a method and a system for realizing plug and play of a distributed DTU (distributed data transfer unit), wherein the distributed DTU comprises a public unit and a plurality of interval units, the interval units are in communication connection with the public unit, the public unit is in communication connection with a power distribution automation master station, and the method is executed by the interval units and comprises the following steps: and generating configuration files by using the number of the interval units, the primary equipment switch numbers, the corresponding information of the ASDU addresses and the interval unit point list information, and actively pushing the configuration files to the public unit for the public unit to send the configuration files to the distribution automation master station through a registration process, so that the matching of the graph model information of the distribution automation master station, the public unit and the interval units is realized. The invention can ensure that the information of the distribution automation master station is consistent with that of the operation site, overcomes the problem of unmatched graph models, and achieves the purpose of plug and play of the distributed DTU.
Description
Technical Field
The invention belongs to the technical field of power system automation, and particularly relates to a method and a system for realizing plug and play of a distributed DTU.
Background
Along with the expansion of the scale of cities and towns and the scale of industrial electricity consumption, the scale of distribution networks in China is also expanded, lines and equipment are increased, and the access of novel power supplies and loads such as distributed power supplies, power electronic equipment, interactive loads, electric automobiles and the like expands the original single-power-supply radiation type structure into a multi-power-supply ring network structure, so that a power distribution network becomes more complex, and higher requirements are provided for global monitoring management and flexible control.
According to the operation service management requirements of national network companies, the equipment model selection standard is improved, the quality control system is sound, the durability of the power distribution network equipment is improved, the core of the equipment is highlighted, and the standardization work of the power distribution equipment is comprehensively promoted according to the principles of safety, reliability, firmness, durability, unified standard and universal interchange. In order to meet the requirement of universal interchange use of equipment of different manufacturers in a certain range and a certain period and improve the operation and maintenance convenience of primary and secondary equipment, a distributed DTU (Distribution Terminal Unit) is gradually and widely popularized and applied.
The distributed DTU means that the DTU consists of a plurality of interval units and public units, and the interval units and the public units are mutually connected in a bus mode and mutually matched to jointly complete the functions of the DTU. The distributed DTU is suitable for protection, measurement and control and communication of ring main units with voltage levels of 35kV and below, has complete functions of protection, measurement, control, communication monitoring and the like, is matched with switches such as circuit breakers, load switches and the like to provide protection for circuits and feed-out lines with voltage levels of 35kV and below, utilizes the complete protection function to quickly cut off an isolated fault area, reduces the power failure range, quickly recovers power supply and powerfully ensures the safe and stable operation of a power distribution network system.
However, the application of the distributed DTUs changes the architecture of the power distribution automation master station model, so that the problems of inconsistent information and unmatched graph models may occur between the power distribution automation master station and the operation site.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a method and a system for realizing plug and play of a distributed DTU (distributed data unit), which can ensure that the information of a distribution automation master station is consistent with that of an operation site, overcome the problem of unmatched graph models and achieve the purpose of plug and play of the distributed DTU.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, a method for implementing plug and play of a decentralized DTU is provided, the decentralized DTU comprising a common unit and a plurality of bay units, the bay units being communicatively connected to the common unit, the common unit being communicatively connected to a distribution automation master station, the method being performed by the bay units and comprising: and generating configuration files by using the number of the interval units, the primary equipment switch numbers, the corresponding information of the ASDU addresses and the interval unit point list information, and actively pushing the configuration files to the public unit for the public unit to send the configuration files to the distribution automation master station through a registration process, so that the matching of the graph model information of the distribution automation master station, the public unit and the interval units is realized.
And further, responding to an interval unit point table issued by the power distribution automation master station, updating the interval unit point table, automatically restarting, reestablishing connection with the public unit after restarting, and starting an interval unit automatic registration process.
In a second aspect, there is provided a method of implementing plug and play for a decentralized DTU, the decentralized DTU comprising a common unit and a number of bay units, the bay units being communicatively connected to the common unit, the common unit being communicatively connected to a power distribution automation master station, the method being performed by the common unit, comprising: responding to the configuration file sent by the interval unit, and sending the configuration file serving as a part of registration information to the distribution automation master station through a registration process to realize matching of graph model information of the distribution automation master station, the public unit and the interval unit; the configuration file comprises the number of interval units, the number of the primary equipment switch, the corresponding information of the ASDU address and the point list information of the interval units.
Further, the transmitting the configuration file as a part of the registration information to the distribution automation master station through the registration process includes: according to the point table model version in the configuration file and the information integrity of the configuration file, the power distribution automation master station is cooperated to initiate a file updating process; if the configuration file is correct, the public unit sends the registration information containing the configuration file to the distribution automation master station through a registration process with the distribution automation master station.
Further, the public unit judges whether the configuration file needs to be updated according to the stored configuration file verification result, if so, the file writing process is started, and if not, the public unit waits to enter a normal communication process.
And further, responding to an automatic registration process started by the interval unit, judging whether the registration information of the interval unit is consistent with the information of the existing configuration file, if not, updating the configuration file, and initiating a registration process to the distribution automation master station after updating, so that the information synchronization of the distribution automation master station and the interval unit point table is realized.
In a third aspect, a method for implementing plug and play of a decentralized DTU is provided, the decentralized DTU comprising a common unit and a plurality of bay units, the bay units being communicatively connected to the common unit, the common unit being communicatively connected to a power distribution automation master station, the method being performed by the power distribution automation master station, comprising: responding to registration information sent by the public unit, obtaining the number of interval units, the primary equipment switch number, the corresponding information of ASDU addresses and interval unit point list information by checking the registration information sent by the public unit, realizing the mapping of the distribution automation master station and the public unit and interval unit graph mode information, simultaneously realizing the consistency of distribution automation master station, public unit and interval unit point list models, and further realizing the matching of the graph mode information of the distribution automation master station, the public unit and the interval unit; the registration information includes configuration files, and the configuration files include the number of interval units, the switch number of the primary equipment, the corresponding information of the address of the ASDU, and the point table information of the interval units.
Further, the distribution automation master station judges whether the information of the distribution automation master station is consistent with that of the public unit or not according to registration information which is sent by the public unit and contains configuration file verification information, whether the configuration file needs to be called or not, when the distribution automation master station judges that the configuration file in the public unit is updated, a calling file flow is started, and the distribution automation master station judges whether the interval unit point list needs to be updated or not according to the called configuration file information.
Furthermore, the distribution automation master station selects and replaces the point table file of the running or on-line interval unit according to the change of the demand of the distribution automation master station, and issues the interval unit point table to the corresponding interval unit in a communication mode of a distributed DTU multi-ASDU address.
In a fourth aspect, a system for realizing plug and play of a distributed DTU is provided, where the distributed DTU includes a common unit and a plurality of interval units, the interval units are in communication connection with the common unit, and the common unit is in communication connection with a distribution automation master station; the interval unit generates a configuration file by the number of the interval units, the primary equipment switch number, the corresponding information of the ASDU address and the interval unit point table information, and actively pushes the configuration file to the public unit; the public unit responds to the configuration file sent by the interval unit, and the configuration file is sent to the distribution automation master station as a part of registration information through a registration process, so that matching of graph model information of the distribution automation master station, the public unit and the interval unit is realized; the distribution automation main station responds to the registration information sent by the public unit, obtains the number of the interval units, the switch numbers of the primary equipment, the corresponding information of the ASDU addresses and the point list information of the interval units by checking the registration information sent by the public unit, realizes the mapping of the distribution automation main station with the graph model information of the public unit and the interval units, simultaneously realizes the consistency of the distribution automation main station, the public unit and the point list model of the interval units, and further realizes the matching of the graph model information of the distribution automation main station, the public unit and the interval units. The distribution automation master station initiates an upgrading interval unit point table version through the public unit, the point table is maintained by the distribution automation master station, the point table is issued to the corresponding interval unit through an IEC104 upgrading function after configuration is completed, the interval unit is automatically restarted after updating the point table, then a registration process is carried out, and dynamic change and remote upgrading of the point table are achieved.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the distributed DTU plug-and-play system, the configuration file is generated by the number of the interval units, the number of the primary equipment switches, the corresponding information of the ASDU addresses and the interval unit point list information, and is actively pushed to the public unit, so that the public unit sends the configuration file to the distribution automation master station through a registration process, the matching of the graph-mode information of the distribution automation master station, the public unit and the interval units is realized, the consistency of the information of the distribution automation master station and an operation site can be ensured, and the purpose of distributed DTU plug-and-play is achieved;
(2) The invention can realize that the interval unit and the public unit automatically register information to the upper level, realize the automatic series connection of the end-to-end flow, avoid the manual intervention and obviously improve the automation degree; in the aspects of flexibility and accuracy, the flexible and various requirements of the power distribution automation master station can be met, the matching of primary and secondary equipment information can be realized, and the one-to-one correspondence between the power distribution automation master station graph model and the field operation equipment is ensured.
Drawings
Fig. 1 is a schematic diagram of a distributed DTU communication structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a method for implementing plug and play of a distributed DTU according to an embodiment of the present invention;
fig. 3 is a flowchart of a distributed DTU remote update point table according to an embodiment of the present invention.
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.
The first embodiment is as follows:
as shown in fig. 1 to fig. 3, a method for implementing plug and play of a distributed DTU includes a common unit and a plurality of interval units, where the interval units are connected to the common unit in communication, and the common unit is connected to a distribution automation master station in communication. Specifically, the interval unit, the public unit and the distribution automation master station are communicated by adopting an IEC104 protocol, and effective data information is interacted in a mode of different ASDU addresses. In the embodiment, the public unit and the distribution automation master station communicate by adopting a distribution automation system DLT634.5104-2009 protocol, and different interval units are distinguished by different ASDU addresses.
The interval unit generates configuration files by the number of the interval units, the primary equipment switch number, the corresponding information of the ASDU address and the interval unit point table information, and actively pushes the configuration files to the public unit by adopting an active pushing mode.
The public unit responds to the configuration file sent by the interval unit, and transmits the configuration file to the power distribution automation master station as part of registration information through a registration process. The public unit can cooperate with a power distribution automation master station to initiate a file updating process according to the point table model version in the configuration file and the information integrity of the configuration file. And if the configuration file is correct, the public unit uploads the information to the distribution automation master station through a registration process with the distribution automation master station.
The distribution automation main station responds to the registration information sent by the public unit, the quantity of the interval units, the switch number of the primary equipment, the corresponding information of the ASDU address and the point list information of the interval units are obtained by checking the registration information sent by the public unit, the mapping of the distribution automation main station with the graph mode information of the public unit and the interval unit is realized, the consistency of the distribution automation main station, the public unit and the point list model of the interval units is realized, the matching of the graph mode information of the distribution automation main station, the public unit and the interval unit is realized, and the purpose of plug and play of the distributed DTU is achieved.
The invention is suitable for a scene that a distributed DTU is accessed into a power distribution automation master station system through a public unit, can realize the automatic synchronization of the point list information of the public unit and the interval unit, realize the automatic synchronization of the point list information of the public unit and the power distribution automation master station, and finally realize the point list synchronization of the power distribution automation master station, the public unit and the interval unit. Meanwhile, the distribution automation main station can realize the matching of graph model information of the distribution automation main station, the public unit and the interval unit according to the configuration information (the number of the interval units, the ASDU address and the switch number information) interacted with the public unit, and the correct correlation of the information of the primary and secondary equipment on site is ensured.
The distribution automation master station can initiate an upgrade interval unit point table version through the public unit, the point table can be maintained by the distribution automation master station, the point table is issued to a corresponding interval unit (ASDU address distinguishes different interval units) through an IEC104 upgrade function after configuration is completed, the interval unit carries out a registration process after the interval unit automatically restarts after updating the point table, and dynamic change and remote upgrade of the point table are achieved.
The dynamic change and remote upgrade process of the point table is as follows:
the distribution automation master station selects and replaces a running or on-line interval unit point table file (rout _ jg.xml) according to the change of the demand of the distribution automation master station, and transmits an interval unit point table to a corresponding interval unit in a distributed DTU multi-ASDU address communication mode;
the interval unit responds to an interval unit point table issued by a power distribution automation master station, updates the interval unit point table, automatically restarts, reestablishes connection with the public unit after restarting, and starts an interval unit automatic registration process;
the public unit responds to an automatic registration process started by the interval unit, judges whether the registration information of the interval unit is consistent with the information of the existing configuration file, if not, updates the configuration file, initiates a registration process to the distribution automation master station after updating, and realizes information synchronization of the distribution automation master station and the interval unit point list.
The interval unit needs to send registration information to the public unit during each connection, wherein the registration information comprises a point table version, point table file verification information, a primary equipment switch number, a transformer ratio of an affiliated interval transformer and an ASDU address. And the public unit judges whether the configuration file needs to be updated or not according to the stored configuration file verification result, starts a file writing process if the configuration file needs to be updated, and waits to enter a normal communication process if the configuration file does not need to be updated. And after the public unit is electrified, the public unit sends registration information including configuration file verification information to the power distribution automation master station. And the distribution automation master station judges whether the information of the distribution automation master station is consistent with that of the public unit or not according to the information and whether the configuration file needs to be called or not, when the distribution automation master station judges that the configuration file of the public unit is updated, a calling file process is started, and the distribution automation master station judges whether the interval unit point list needs to be updated or not according to the called distribution file information. The distribution automation master station can know the point list information of the public units and the interval information of the primary equipment protected by the interval units after obtaining the distributed DTU configuration information, and the distribution automation master station can automatically obtain corresponding point list files and then generate point lists, and can automatically associate switch information in a graph model to realize the correspondence of primary and secondary equipment relations.
The automatic registration process for distributed DTU communication is shown in fig. 2.
(1) Interval unit auto-registration process
The interval unit leaves a factory and is burnt with a preset point table, the preset point table is arranged in a switch cabinet on site and corresponds to switch equipment one by one, the serial number of the interval switch, the transformation ratio of the interval transformer and the like can be verified on the site of initial electrification, and the interval unit actively sends interval information including an ASDU address, a switch serial number, the transformation ratio of the transformer, a point table version and verification information on line every time. The invention implements rule extension interval unit registration messages based on the application DLT634.5104-2009 of a power distribution automation system as follows:
the information format is as follows:
the reason for this is as follows:
| numbering | Message direction | Transport cause COT | Identification |
| <6> | Controlling direction | Activation | act |
| <7> | Monitoring direction | Activation confirmation | act |
| <47> | Monitoring direction | Negative acknowledgement |
The identification type TI is as follows:
| numbering | Identification type | Identification |
| <220> | Interval element registration command |
And the public unit receives the registration information of the interval units and compares the registration information with the stored information in the configuration file, if the registration information of the interval units is changed, the configuration file is updated, the content of the configuration file comprises the ASDU addresses of the interval units, the switch numbers, the transformer transformation ratios, the point table versions of the interval units and the verification information, and if the registration information of the interval units is not required to be updated, the standby distribution automation master station enters a normal communication process.
(2) Common element registration procedure
The public unit starts a registration process after updating a configuration file or powering on again each time, the registration information comprises configuration file verification information, and the detailed rule implementation expanding public unit registration message based on the application DLT634.5104-2009 of the power distribution automation system comprises the following steps:
the information format is as follows:
| |
1 byte |
| |
1 byte |
| Control Domain C | 4 bytes |
| |
1 byte |
| Variable frame length qualifier VSQ (I invalid) | 1 byte |
| Transmission cause COT | 2 bytes |
| ASDU public address | 2 bytes |
| Information body address | 3 bytes |
| Configuration file |
1 byte (length x) |
| Configuration file verification information | x bytes (without end sign) |
The reason for this is as follows:
| numbering | Message direction | Transport cause COT | Identification |
| <6> | Controlling direction | Activation | act |
| <7> | Monitoring direction | Activation confirmation | act |
| <47> | Monitoring direction | Negative acknowledgement |
The identification type TI is as follows:
| numbering | Identification type | Identification |
| <221> | Common Unit registration Command |
The distribution automation master station receives the registration information of the public unit, compares the registration information with a local configuration file to determine whether the registration information is consistent with the local configuration file (the file needs to be called when the power is turned on for the first time), and calls the configuration file to update if the registration information is inconsistent with the local configuration file, so that the information of the number of the interval units, the ASDU addresses, the transformer transformation ratio and the switch numbers is obtained. And comparing whether the interval unit point list version and the verification information are consistent with the existing information of the distribution automation master station, judging whether updating is needed, if not, starting file transmission, calling the latest point list file at the corresponding interval, and if so, starting a normal service flow.
After the distribution automation master station obtains the public unit configuration file, the corresponding relation between the ASDU address and the switch number can be analyzed, and after the interval unit point table file is obtained, the distribution automation master station can quickly and automatically generate a point table database.
The second embodiment:
based on the method for realizing plug and play of the distributed DTU described in the first embodiment, the first embodiment provides a system for realizing plug and play of the distributed DTU, and the distributed DTU includes a common unit and a plurality of interval units, the interval units are in communication connection with the common unit, and the common unit is in communication connection with the distribution automation master station.
The interval unit generates a configuration file by the number of the interval units, the primary equipment switch number, the corresponding information of the ASDU address and the interval unit point table information, and actively pushes the configuration file to the public unit.
And the public unit responds to the configuration file sent by the interval unit, and sends the configuration file to the distribution automation master station as a part of registration information through a registration process, so that the matching of the graph model information of the distribution automation master station, the public unit and the interval unit is realized.
The distribution automation main station responds to the registration information sent by the public unit, obtains the number of the interval units, the switch numbers of the primary equipment, the corresponding information of the ASDU addresses and the point list information of the interval units by checking the registration information sent by the public unit, realizes the mapping of the distribution automation main station with the graph model information of the public unit and the interval units, simultaneously realizes the consistency of the distribution automation main station, the public unit and the point list model of the interval units, and further realizes the matching of the graph model information of the distribution automation main station, the public unit and the interval units.
The distribution automation master station initiates an upgrading interval unit point table version through the public unit, the point table is maintained by the distribution automation master station, the point table is issued to the corresponding interval unit through an IEC104 upgrading function after configuration is completed, the interval unit is automatically restarted after updating the point table, then a registration process is carried out, and dynamic change and remote upgrading of the point table are achieved.
Embodiments of the present application may be provided as methods, systems, or computer program products. 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 scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
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.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method of implementing distributed DTU plug and play, the distributed DTU comprising a common unit and a plurality of bay units, the bay units communicatively coupled to the common unit, the common unit communicatively coupled to a distribution automation master, the method performed by the bay units, comprising:
and generating configuration files by using the number of the interval units, the primary equipment switch numbers, the corresponding information of the ASDU addresses and the interval unit point list information, and actively pushing the configuration files to the public unit for the public unit to send the configuration files to the distribution automation master station through a registration process, so that the matching of the graph model information of the distribution automation master station, the public unit and the interval units is realized.
2. The method of claim 1 for implementing decentralized DTU plug and play,
and responding to an interval unit point table issued by the power distribution automation master station, updating the interval unit point table, automatically restarting, reestablishing connection with the public unit after restarting, and starting an interval unit automatic registration process.
3. A method of implementing distributed DTU plug and play, the distributed DTU comprising a common unit and a plurality of bay units, the bay units communicatively coupled to the common unit, the common unit communicatively coupled to a distribution automation master, the method performed by the common unit, comprising:
responding to the configuration file sent by the interval unit, sending the configuration file serving as a part of registration information to the distribution automation master station through a registration process, and realizing matching of graph model information of the distribution automation master station, the public unit and the interval unit; the configuration file comprises the number of interval units, the number of the primary equipment switch, the corresponding information of the ASDU address and the point list information of the interval units.
4. The method of claim 3, wherein the transmitting the configuration file as part of the registration information to the distribution automation master via the registration process comprises: according to the version of the point table model in the configuration file and the information integrity of the configuration file, the point table model cooperates with a power distribution automation master station to initiate a file updating process; and if the configuration file is correct, the public unit sends the registration information containing the configuration file to the distribution automation master station through a registration process with the distribution automation master station.
5. The method of claim 3, wherein the public unit determines whether the configuration file needs to be updated according to the stored configuration file verification result, and starts a file writing process if the configuration file needs to be updated, or waits to enter a normal communication process if the configuration file does not need to be updated.
6. The method of claim 3 for implementing decentralized DTU plug and play,
and responding to an automatic registration process started by the interval unit, judging whether the registration information of the interval unit is consistent with the information of the existing configuration file, if not, updating the configuration file, initiating a registration process to the distribution automation master station after updating, and realizing information synchronization of the distribution automation master station and the interval unit point list.
7. A method of implementing distributed DTU plug and play, the distributed DTU comprising a common unit and a plurality of bay units, the bay units communicatively coupled to the common unit, the common unit communicatively coupled to a power distribution automation master station, the method performed by the power distribution automation master station, comprising:
responding to registration information sent by the public unit, obtaining the number of interval units, the primary equipment switch number, the corresponding information of ASDU addresses and interval unit point list information by checking the registration information sent by the public unit, realizing the mapping of the distribution automation master station and the public unit and interval unit graph mode information, simultaneously realizing the consistency of distribution automation master station, public unit and interval unit point list models, and further realizing the matching of the graph mode information of the distribution automation master station, the public unit and the interval unit; the registration information includes configuration files, and the configuration files include the number of interval units, the number of the primary equipment switches, the corresponding information of the ASDU addresses, and the information of the interval unit point table.
8. The method of claim 7, wherein the distribution automation master station determines whether the information of the distribution automation master station and the information of the common unit are consistent and whether the configuration file needs to be called according to the registration information containing the configuration file verification information sent by the common unit, when the distribution automation master station determines that the configuration file in the common unit is updated, the call file process is started, and the distribution automation master station determines whether the interval unit point list needs to be updated according to the called configuration file information.
9. The method of claim 7 for implementing decentralized DTU plug and play,
and the distribution automation master station selects and replaces the point list file of the running or on-line interval unit according to the change of the demand of the distribution automation master station, and transmits the point list of the interval unit to the corresponding interval unit in a communication mode of a distributed DTU multi-ASDU address.
10. A system for realizing plug and play of a distributed DTU (data transfer Unit) is characterized in that the distributed DTU comprises a public unit and a plurality of interval units, wherein the interval units are in communication connection with the public unit, and the public unit is in communication connection with a power distribution automation master station;
the interval unit generates a configuration file by the number of the interval units, the primary equipment switch number, the corresponding information of the ASDU address and the interval unit point table information, and actively pushes the configuration file to the public unit;
the public unit responds to the configuration file sent by the interval unit, and the configuration file is sent to the distribution automation master station as a part of registration information through a registration process, so that matching of graph model information of the distribution automation master station, the public unit and the interval unit is realized;
the distribution automation master station responds to the registration information sent by the public unit, obtains the corresponding information of the quantity of the interval units, the primary equipment switch numbers, the ASDU addresses and the interval unit point table information by checking the registration information sent by the public unit, realizes the mapping of the distribution automation master station with the public unit and the interval unit pattern model information, realizes the consistency of the distribution automation master station, the public unit and the interval unit point table model, and further realizes the matching of the distribution automation master station, the public unit and the interval unit pattern model information;
the distribution automation master station initiates an upgrade interval unit point table version through the public unit, the point table is maintained by the distribution automation master station, the point table is issued to a corresponding interval unit through an IEC104 upgrade function after configuration is completed, the interval unit automatically restarts after updating the point table, then a registration process is carried out, and dynamic change and remote upgrade of the point table are achieved.
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