CN116566049A - Plug-and-play method based on distributed station terminal - Google Patents
Plug-and-play method based on distributed station terminal Download PDFInfo
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- CN116566049A CN116566049A CN202310507477.8A CN202310507477A CN116566049A CN 116566049 A CN116566049 A CN 116566049A CN 202310507477 A CN202310507477 A CN 202310507477A CN 116566049 A CN116566049 A CN 116566049A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000013507 mapping Methods 0.000 claims abstract description 20
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000000284 extract Substances 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 5
- 230000011664 signaling Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000001994 activation Methods 0.000 description 3
- 238000013506 data mapping Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
- G06F9/4413—Plug-and-play [PnP]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a plug-and-play method based on a terminal of a distributed station, which comprises the following steps: the public unit imports a self-description file corresponding to the supporting type according to the type of the interval unit supported by the public unit; the interval unit sends a preset point table to the public unit, wherein the preset point table comprises an interval unit station address and an interval unit equipment type; the public unit analyzes the preset point table and extracts the equipment type of the interval unit in the interval unit preset point table; if the device type is supported by the public unit, the public unit acquires the self-description file of the interval unit and analyzes the self-description file; the public unit maps and associates the site address of the interval unit with the data in the corresponding self-description file to form instantiation data; the user determines a user point table, a public unit configures the user point table, and a mapping relation between the user point table and the instantiation data is established; and obtaining a mapping relation between the prefabricated point table of the interval unit and the user point table, and realizing data online.
Description
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to a plug-and-play method based on a terminal of a distributed station.
Background
The distributed station terminal (standardized distributed DTU, data Transfer Unit) is an intelligent feeder terminal developed for current 12kV distribution line users, and consists of a plurality of spacing units and public units, wherein the spacing units are installed in each ring main unit spacing cabinet, the public units are installed in a concentrated mode, and the spacing units and the public units are in communication connection and mutually matched to jointly complete the functions of the distributed station terminal. The terminal of the distributed station can quickly isolate the faulty user, so that the operation of the whole power distribution network is prevented from being influenced by the power failure of one user, and unnecessary loss is caused for power supply enterprises.
At present, in the field operation process of a terminal of a distributed station, complicated communication parameter configuration and point table configuration processes are required, point table information has no practical meaning, so that public units and interval units cannot directly recognize each other, a careful and complete point-to-point process is required to ensure the correctness of data, requirements on engineering maintenance personnel are high, plug-and-play cannot be realized, and the operation cost, operation maintenance cost and error correction cost are high for a long time.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a plug-and-play method based on a terminal of a distributed station.
The technical scheme for solving the technical problems is as follows:
the invention provides a plug-and-play method based on a distributed station terminal, which comprises a spacing unit and a public unit, wherein the spacing unit is arranged in each ring main unit spacing cabinet, the public unit is arranged in a centralized manner, and the spacing unit is in communication connection with the public unit;
the plug-and-play method of the terminal of the distributed station comprises the following steps:
step 1, a public unit imports a self-description file corresponding to a supporting type according to the type of a spacing unit supported by the public unit;
step 2, the interval unit sends a preset point table to the public unit, wherein the preset point table comprises an interval unit station address and an interval unit equipment type;
step 3, the public unit analyzes the preset point table, and extracts the interval unit equipment type in the interval unit preset point table; if the device type is supported by the public unit, the public unit acquires the self-description file of the interval unit and analyzes the self-description file; the public unit maps and associates the site address of the interval unit with the data in the corresponding self-description file to form instantiation data;
step 4, the user determines a user point table, the public unit configures the user point table, and a mapping relation between the user point table and the instantiation data is established;
and 5, according to the mapping relation between the user point table and the instantiation data, obtaining the mapping relation between the interval unit prefabricated point table and the user point table, and realizing the online data.
Further, the step of constructing the self-description file in step 1 includes:
dividing the power distribution terminal data into four data sets, namely a telemetry data set, a remote signaling data set, an electric data set and a remote control data set, establishing a data dictionary by the four data sets, wherein each variable corresponds to one data index, and realizing the self-description of the current quantity through the data index.
Further, the self-description file includes: the data set type, the data number of the current variable in the data set, the data index of the current variable and the self-description corresponding to the current variable in the data set.
Further, there is a CRC check at the end of the self-description file.
Further, the step 3 further includes: the common unit parses the pre-set point table, parses the device type not supported by the common unit, upgrades the common unit, and manually loads the spacer unit into the common unit if the common unit program itself supports but fails to load the self-description file of such spacer unit.
Compared with the prior art, the invention has the following technical effects:
(1) The invention realizes the plug-and-play function of the terminal of the distributed station by means of site allocation, transmission and analysis of self-description files, real-time mapping and importing of data and the like, and reduces the running cost and the operation and maintenance cost of equipment;
(2) The invention can promote the on-site operation speed of the terminal of the distributed station by analyzing the operation process of the power distribution terminal, innovating the processes of model import, active activation, data mapping, point table configuration, data online and the like, and finally realize the plug-and-play of the terminal of the distributed station, greatly promote the reliability of the terminal equipment of the distributed station, be compatible with the access of different interval units in the future, and have quite friendliness for the change and replacement of the interval units.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions and advantages of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a master activation process of the present invention;
FIG. 2 is a diagram illustrating a data mapping process of a spacer unit according to the present invention;
FIG. 3 is a schematic diagram of a dot table configuration process according to the present invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention to achieve the preset purpose, the following detailed description is given below of the specific implementation, structure, features and effects of the technical solution according to the present invention with reference to the accompanying drawings and preferred embodiments. The particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In one embodiment of the present invention, a plug and play method based on a distributed station terminal is provided, the distributed station terminal includes a spacer unit and a common unit, the spacer unit is installed in each ring main unit spacer cabinet, the common unit is installed in a centralized manner, the spacer unit and the common unit are connected in a communication manner, and the plug and play method of the distributed station terminal includes the following steps: the public unit imports a self-description file corresponding to the supporting type according to the type of the interval unit supported by the public unit; the interval unit sends a preset point table to the public unit, wherein the preset point table comprises, but is not limited to, an interval unit station number and an interval unit equipment type; the public unit analyzes the preset point table and extracts the equipment type of the interval unit in the interval unit preset point table; if the device type is supported by the public unit, the public unit analyzes the self-description file after acquiring the self-description file of the interval unit; the public unit performs mapping association according to the analyzed interval unit station number and the data description in the corresponding self-description file to form instantiation data; the user determines a user point table, a public unit configures the user point table, and a mapping relation between the user point table and the instantiation data is established; and obtaining the mapping relation between the interval unit data points and the user point table, thereby realizing the online data.
The following detailed development of each step is performed:
step 1, the public unit imports the self-description file corresponding to the supporting type according to the type of the interval unit supported by the public unit.
The public unit imports the self-description file corresponding to the supporting type according to the type of the interval unit supported by the public unit. The common unit supports two self-describing files, one is an IEC61850 based self-describing file ICD (IED Configuring Document) and one is a simplified ICD file.
The self-description file ICD (IED Configuring Document) based on IEC61850 has the advantages of interoperability and uniform format based on the existing standard system which is already used in a large amount, and can support the access of interval units of different factories. The method has the defects that the file is relatively large, more information redundancy exists, the public unit program is required to have XML file analysis capability, the requirement on a terminal CPU is high, otherwise, the analysis speed is slower, and the plug-and-play use effect is affected.
In the invention, a simplified version of self-description file is provided on the basis of IEC 61850-based self-description file ICD, a data dictionary is established by using the concept of IEC61850 data index, the file is simplified as much as possible on the basis of ensuring reliable identification of data and self-description, and the access threshold is reduced.
According to the characteristics of the existing power distribution terminal, data are divided into four data sets, namely a telemetry data set (ycdataset), a remote signaling data set (yxdataset), an electric data set (dddataset) and a remote control data set (ykdataset), a data dictionary is built for common telemetry remote signaling electric remote control data, each variable corresponds to one data index, and the current quantity can be self-described through the data indexes.
That is, the self-description file includes: the data set type, the data number of the current variable in the data set, the data index of the current variable and the self-description corresponding to the current variable in the data set.
For example, a telemetry data set may be identified, the point location No. 0 is a phase current, the point location No. 1 is a phase current, and the data types of both data are floating point numbers, which may be represented as follows:
ycdataset offset=0 dataindex=mmxu$mx$a.phsa$cval mac.f desc= "phase a current"
ycdataset offset=1 dataindex=mmxu$mx$a. Phsb$cval mag. F desc= "phase B current"
Wherein "ycdataset" represents that current data is assigned to the telemetry data set, "offset=0" represents that the current variable has a data number of 0 in the data set to which it belongs, "dataindex=mmxu$mx$a.phsa$val.mag.f" represents the data index of the current variable, "mmxu$mx$a.phsa$val.mag.f" represents the a-phase measurement represented by a floating point number; desc= "B-phase current" represents the self-description corresponding to the current variable in the data set to which it belongs.
The self-description file ICD based on IEC61850 does not need to know a complex standard system of IEC61850, and the model file of the ICD is built by inquiring the data dictionary, so that the threshold of access is reduced, and the practicability and the larger popularization of the method are improved.
After the formation of the device description file, the organization of the device description file is performed as follows, and the file is named "device type. Msg".
For example: the device type is DF9312_01, and the definition of the device type is "large device type_device sub-model" for distinguishing between different interval unit devices.
The CRC16 calculated value is arranged at the tail of the file, so that the file is prevented from being tampered maliciously, and the safety is ensured.
DevType＝“DF9312_01”
Ycdataset Num＝20
Offset=0 dataindex= "mmxu$mx$a. Phsa$cval. Mag. F" desc= "phase a current"
Offset=1 dataindex= "mmxu$mx$a. Phsb$cval. Mag. F" desc= "B-phase current"
……
CRC＝FF01
And importing the organized description file into a common unit model directory.
And step 2, the interval unit sends a preset point table to the public unit, wherein the preset point table comprises an interval unit station number and an interval unit equipment type. Table 1 is the format of the interval unit uplink message point table.
Table 1 uplink message format
Before the interval unit sends the preset point list to the public unit, the station address needs to be set.
Step 3, the public unit analyzes the preset point table, and extracts the interval unit equipment type in the interval unit preset point table; if the device type is supported by the public unit, the public unit analyzes the self-description file after acquiring the self-description file of the interval unit; and the public unit performs mapping association with the data description in the corresponding self-description file according to the analyzed interval unit station number to form instantiation data.
Specifically, the public unit analyzes the preset point table of the interval unit, extracts the equipment type of the interval unit in the preset point table of the interval unit, judges whether the equipment type is supported by the public unit, if the equipment type of the interval unit is not supported, reports an error, prompts that the public unit is supported, can be upgraded according to actual conditions, and if the public unit program supports but does not load the self-description file of the interval unit, the interval unit can be manually loaded to the public unit.
The public unit performs mapping association with the data description in the corresponding public unit self-description file according to the analyzed interval unit station number to form instantiation data; specifically, the instantiation data includes a data set type, a data number of the current variable in the data set to which the current variable belongs, a data index of the current variable, a self description corresponding to the current variable in the data set to which the current variable belongs, and a spacing unit station number. At this time, the self-description of the current variable after mapping is "feeder 1A phase current".
The format of the downlink confirmation message from the public unit to the interval unit is shown in table 2, when the interval unit data type in the interval unit preset point table is found out by the public unit, the corresponding model file is found out, the CRC is correct, and when the mapping can be correctly analyzed, the master station activates the authentication result to be 0, which represents authentication success, otherwise, 1 represents authentication failure.
Table 2 active downlink message format
Step 4, the user confirms the point table, the public unit carries on the point table configuration to set up the point table and corresponds to forming the instantiation data one by one according to the correspondent requirement; the configuration process is as shown in fig. 3, and the process is completed through manual configuration.
The user-defined point table includes the data set type, the data number of the current variable in the data set to which it belongs, and the self-description. Specifically, referring to fig. 3, the user determination point table is self-described as "feeder 1A phase current".
And 5, obtaining a mapping relation between the interval unit data points and the user point table, and realizing data online.
The relationship between the user point table and the instantiation data point is established through the point table configuration, the relationship between the interval unit data and the instantiation data point is realized through the active activation and data mapping links, the mapping relationship between the interval unit data point and the user point table is finally realized, the data is online, and then the correct data meeting the user requirements is sent to the public unit.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (6)
1. The plug and play method based on the terminal of the distributed station is characterized in that the terminal of the distributed station comprises a spacing unit and a public unit, wherein the spacing unit is arranged in each ring main unit spacing cabinet, the public unit is arranged in a centralized manner, and the spacing unit is in communication connection with the public unit;
the plug-and-play method of the terminal of the distributed station comprises the following steps:
step 1, a public unit imports a self-description file corresponding to a supporting type according to the type of a spacing unit supported by the public unit;
step 2, the interval unit is started to be actively activated, and the interval unit sends a preset point table to the public unit, wherein the preset point table comprises but is not limited to an interval unit station address and an interval unit equipment type;
step 3, the public unit analyzes the preset point table, and extracts the interval unit equipment type in the interval unit preset point table; if the equipment type is supported by the public unit, the public unit acquires the self-description file of the interval unit, analyzes the self-description file, and performs mapping association according to the site address of the interval unit and the data in the corresponding self-description file to form instantiation data;
step 4, the user determines a user point table, the public unit configures the user point table, and a mapping relation between the user point table and the instantiation data is established;
and 5, according to the mapping relation between the point table and the instantiation data and the mapping relation between the user point table and the instantiation data, obtaining the mapping relation between the interval unit preset point table and the user point table, and realizing data online.
2. The plug-and-play method of claim 1, wherein the self-describing file constructing step in step 1 comprises:
dividing the power distribution terminal data into four data sets, namely a telemetry data set, a remote signaling data set, an electric data set and a remote control data set, establishing a data dictionary by the four data sets, and corresponding each variable of the data sets to one data index, wherein the current quantity is self-described through the data index.
3. The plug and play method based on the distributed station terminal as claimed in claim 2, wherein the self-description file includes: the data set type, the data number of the current variable in the data set, the data index of the current variable and the self-description corresponding to the current variable in the data set.
4. A plug and play method based on a decentralized station terminal according to claim 3, characterized in that the self-describing file has a CRC check at the end.
5. The plug and play method based on the distributed station terminal according to claim 1, wherein the step 3 further comprises: the common unit parses the pre-set point table, parses the device type not supported by the common unit, upgrades the common unit, and manually loads the spacer unit into the common unit if the common unit program itself supports but fails to load the self-description file of such spacer unit.
6. The plug and play method based on the distributed station terminal according to claim 1, wherein step 1 is named uniformly according to the device type from the description file.
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