CN111242807B - Method for accessing substation data into ubiquitous power Internet of things - Google Patents
Method for accessing substation data into ubiquitous power Internet of things Download PDFInfo
- Publication number
- CN111242807B CN111242807B CN202010121856.XA CN202010121856A CN111242807B CN 111242807 B CN111242807 B CN 111242807B CN 202010121856 A CN202010121856 A CN 202010121856A CN 111242807 B CN111242807 B CN 111242807B
- Authority
- CN
- China
- Prior art keywords
- data
- things
- power internet
- protocol processing
- ubiquitous power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/215—Improving data quality; Data cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- 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
- H04L69/22—Parsing or analysis of headers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Abstract
The invention provides a method for accessing substation data into a ubiquitous power Internet of things, which divides a system into 61850 server equipment, 61850 client protocol processing units, a ubiquitous power Internet of things protocol processing unit and a ubiquitous power Internet of things big data processing platform, wherein the 61850 client protocol processing units and the ubiquitous power Internet of things protocol processing unit are completed by a communication gateway. The beneficial effects of the invention are as follows: 1. the invention fully utilizes the existing substation equipment investment and the communication network, and can realize the access of the substation data to the ubiquitous power Internet of things by only adding one communication gateway; 2. the invention can conveniently realize the access configuration of the data by fully adopting the mode of importing the ICD file and the DAT file and generating the CFG file, thereby greatly reducing the field implementation workload.
Description
Technical Field
The invention relates to an automatic communication technology of a power system, in particular to a method for accessing substation data into ubiquitous power Internet of things.
Background
The ubiquitous electric power internet of things is one of the cores for building a three-type two-network, and the main aim is to build a multi-level system architecture of cloud, network, side and end around each link of electric power production, transmission, consumption and the like, finally realize interconnection and intercommunication, comprehensive perception and high-speed information processing of each link of an electric power system, and perform deep artificial intelligence and big data analysis processing based on the interconnection and intercommunication, complete perception and high-speed information processing, so that the data value is mined, the service quality is improved, and an intelligent electric power system is built.
The transformer substation is one of key links of power transmission and distribution, how to quickly and efficiently access the ubiquitous power Internet of things, and the transformer substation utilizes existing resources as much as possible, reduces equipment investment, and is one of contents which need to be considered seriously in the construction of the ubiquitous power Internet of things.
At present, an IEC61850 protocol is basically adopted in a built substation automation system in China, the protocol system is huge, and if the protocol is used for accessing substation data to the ubiquitous electric power Internet of things, the problem is that the investment construction of the communication equipment and the implementation workload of the communication access of the whole system are huge due to large data volume and complex interfaces; moreover, the ubiquitous power internet of things only needs to collect key information in the substation, such as the running state of a switch, basic electrical measurement parameters and metering data, and all data are not required to be accessed. Therefore, a new gateway device needs to be developed, after the internal data of the transformer substation is collected through 61850, the data is cleaned and filtered, and the screened data is sent to the ubiquitous power internet of things big data processing platform through the internet of things communication protocol.
Disclosure of Invention
The invention provides a method for accessing substation data into a ubiquitous power Internet of things, which divides a system into 61850 server equipment, 61850 client protocol processing units, a ubiquitous power Internet of things protocol processing unit and a ubiquitous power Internet of things big data processing platform, wherein the 61850 client protocol processing units and the ubiquitous power Internet of things protocol processing unit are completed by a communication gateway;
the specific definition and association relation of the divided devices and processing units are as follows:
61850 server device: the 61850 server equipment comprises various protection, measurement and control and online monitoring devices in the transformer substation, the devices interact data with a 61850 client protocol processing unit through a 61850 protocol to finish uploading of the data and updating processing of configuration, and relevant data interaction contents are described through ICD files;
61850 client protocol processing unit: the 61850 client protocol processing unit is communicated with each 61850 server device, and the obtained monitoring data is refreshed to the ubiquitous power internet of things protocol processing unit; the ubiquitous electric power internet of things protocol processing unit: the ubiquitous power internet of things protocol processing unit filters and screens the received data of each server device of the transformer substation, and transmits the data to the ubiquitous power internet of things big data processing platform according to the requirements;
ubiquitous power internet of things big data processing platform: the ubiquitous power internet of things big data processing platform gathers substation data of scattered places, fuses the substation data with other power processing link information, and analyzes and processes big data;
the method further comprises performing the steps of:
s1, step: generating a configuration file; the configuration tool imports ICD file of the accessed 61850 server equipment and data file of the ubiquitous power Internet of things big data processing platform, and generates CFG configuration file after data distribution mapping;
s2, step: initializing configuration; the communication gateway imports the CFG configuration file, analyzes and obtains IED, group, data each level configuration by the ubiquitous power internet of things protocol processing unit, and transmits configuration information to the 61850 client protocol processing unit;
s3, step: 61850 client protocol processing; the 61850 client protocol processing unit adopts 61850 client communication protocol according to the analyzed IED, group, data hierarchical configuration information to collect and read the data of each 61850 server device;
s4, step: data filtering and caching; the ubiquitous power internet of things protocol processing unit acquires 61850 data refreshed by the client protocol processing unit, cleans and filters the data according to the data uploading requirement of the large data processing platform, converts the screened data from an IEC61850 data model into a local data model and caches the local data model, wherein the converted content comprises a data value, a data time scale and data quality;
s5, step: uploading a ubiquitous electric power internet of things protocol; the ubiquitous power internet of things protocol processing unit is connected with the ubiquitous power internet of things big data processing platform in a standard SSL encryption mode, and logs in an MQTT server through an MQTT protocol to conduct data interaction transmission.
As a further improvement of the invention, in the step S1, the CFG configuration file is described in an xml grammar format and is used for establishing the association relationship between the accessed 61850 server equipment data information and the ubiquitous power Internet of things platform information and issuing the association relationship to a communication gateway for use.
As a further improvement of the present invention, in the step S1, the CFG profile includes the following data tags:
header tag: describing the integral information of the CFG file, wherein the attribute content comprises a version number and a crc check code;
IED tag: one IED corresponds to one 61850 server device, and the attribute content comprises a server IP address and a server IED name; the IED consists of a series of Group tags;
group tag: one-to-one correspondence with the report control blocks of 61850 server device, extracting from the ReportControl element of the ICD file, refining the unique identifier rptID of the record report control block;
data tag: each tag represents a ubiquitous power internet of things data point and comprises two attributes of srcdatafs and dstDataID, wherein srcdatafs represents the offset of the data in the data set of the corresponding report control block of the 61850 server device, and dstDataID represents the data number in the data corresponding DAT file.
As a further improvement of the invention, in the step S2, the triggering options and the option domain attributes of the report control block corresponding to the Group hierarchy are configured fixedly without CFG file configuration, wherein the triggering options are triggered fixedly by integrity and data change, and the integrity period is 3S; the options field adopts a minimized configuration, only configuring the necessary EntryID, entryData options.
As a further improvement of the present invention, in the step S3, the following steps are further performed in order:
s31, step: IED channel allocation; according to the memory resource condition of the communication gateway, dividing 61850 client protocol processing into N channels, wherein each channel divides fixed memory resources for protocol processing data caching; on the premise of limiting a maximum channel number N, according to the total Data amount of the subordinate Data of each IED, the IED objects associated with each channel are distributed in a balanced manner, so that the total Data amount processed by each channel is similar;
s32, step: initializing IED connection; each channel establishes a task, and the task establishes communication connection for each IED in turn according to the distributed IED object IP address and IED name attribute and performs MMS initialization;
s33, step: group initialization configuration; writing configuration values into each report control block according to the Group attribute, fixed report control block trigger options, option fields and integrity periods, and starting report service;
s34, step: interception of connection state; 61850 client channels monitor the network connection state of each IED object, if the network is normal, enter the next step S35, if abnormal, return to S32 to carry out connection initialization again;
s35, step: message receiving and caching; 61850 client channels receive network messages sent by each IED associated server device, filter the messages, only reserve MMS protocol messages, only reserve application layer protocol parts in the messages, and uniformly cache the messages;
s36, step: analyzing and processing the message; decoding the buffer message according to the MMS protocol, retrieving the corresponding Group object according to the rptID, sequentially obtaining corresponding values according to subordinate Data configuration content, and refreshing the decoded values to the ubiquitous power Internet of things protocol processing unit according to the Data node Data mapping relation in the CFG file.
As a further improvement of the present invention, in the step S31, the specific method is that firstly, the average total Data amount Davg allocated to each channel is calculated, and the total Data amount of each IED object is ordered, which is N1, N2, … Nm in sequence; then, performing a first round of channel allocation, and controlling the total Data amount of each channel to be lower than Davg; and finally, carrying out channel allocation for the second round, and sequentially allocating the rest IEDs to the channels with the smallest total allocated data amount until all IEDs are allocated.
As a further improvement of the invention, in the step S4, the ubiquitous power internet of things protocol processing unit stores uploading data at regular intervals according to the requirement of the power big data platform, and at least stores curve data of 15 days so as to facilitate the power big data platform to supplement blank data in a transmission interruption period caused by network faults and ensure the reliability and the integrity of data transmission between the power big data platform and the communication gateway.
As a further improvement of the invention, in the step S5, in order to ensure the information security, after the communication gateway is successfully connected with the MQTT server, login registration is firstly carried out; meanwhile, the data transmission adopts TLS to carry out secure encryption on the MQTT transmission content.
In the step S5, in order to improve transmission efficiency, the communication gateway and the ubiquitous power internet of things big data platform adopt MQTT protocol interaction data based on a publish and subscribe mode, aiming at different priority demands of the ubiquitous power internet of things big data platform on data, uploaded data is reasonably divided into a plurality of data sets, different topics are defined for each data set, the communication gateway generally and periodically publishes the topics corresponding to analog quantity and electricity quantity, and the topics corresponding to alarm information are published in real time, and after subscribing the topics, the electric power big data platform can receive the data content of the topics.
As a further improvement of the invention, in the step S5, the ubiquitous power Internet of things protocol processing unit adopts getStationCfg, recvDataMsg, sendDataMsg three general data interfaces to realize information interaction with the ubiquitous power Internet of things big data platform, supports the MQTT protocol, and can conveniently expand other ubiquitous power Internet of things communication protocols.
The beneficial effects of the invention are as follows: 1. the invention fully utilizes the existing substation equipment investment and the communication network, and can realize the access of the substation data to the ubiquitous power Internet of things by only adding one communication gateway; 2. the invention fully adopts the mode of importing ICD files and DAT files and generating CFG files, can conveniently realize the access configuration of data, and greatly reduces the field implementation workload; 3. according to the invention, a plurality of IEDs are uniformly distributed on each 61850 client protocol processing channel, so that the system resource overhead is greatly reduced, and the running stability of the communication gateway is ensured; 4. in the message analysis link, the invention greatly reduces the processing pressure of network messages and protocol processing by adopting modes such as MMS message filtering, MMS application layer protocol stripping and the like, and avoids data loss or system breakdown caused by excessive access data of a transformer substation; 5. according to the invention, the data flow of accessing the ubiquitous power Internet of things is limited through data cleaning, and the data uploading can be realized through a lightweight wireless communication mode, so that the communication investment is saved; 6. the invention ensures the information security of communication access by adopting data encryption.
Drawings
FIG. 1 is a general block diagram of a method for accessing substation data into ubiquitous power Internet of things;
FIG. 2 is a 61850 client protocol processing flow diagram of the present invention.
Detailed Description
As shown in fig. 1, according to the method for accessing substation data into the ubiquitous power internet of things, the system is divided into 61850 server equipment, 61850 client protocol processing units, ubiquitous power internet of things protocol processing units and ubiquitous power internet of things big data processing platforms, wherein the 61850 client protocol processing units and the ubiquitous power internet of things protocol processing units are completed by a communication gateway.
The specific definitions and association relationships of the various devices and processing units are as follows:
61850 server device: the 61850 server equipment comprises various protection, measurement and control and online monitoring devices in the transformer substation, the devices interact data with a 61850 client protocol processing unit through a 61850 protocol to finish uploading of the data and updating processing of configuration, and relevant data interaction content is described through an ICD file;
61850 client protocol processing unit: the 61850 client protocol processing unit is communicated with each 61850 server device, and the obtained monitoring data is refreshed to the ubiquitous power internet of things protocol processing unit;
the ubiquitous electric power internet of things protocol processing unit: the ubiquitous power internet of things protocol processing unit filters and screens received substation data, and sends the data to the ubiquitous power internet of things big data processing platform according to the requirements;
ubiquitous power internet of things big data processing platform: the ubiquitous power internet of things big data processing platform monitors substation data in scattered places, fuses the received data with other power processing link information, and analyzes and processes big data.
Based on the framework, two products, namely a ubiquitous power internet of things access configuration tool and a communication gateway, need to be developed.
The first developed product is an electric power Internet of things access configuration tool, and upper computer software is developed based on a PC end to complete the related functions of the step S1.
S1, step: generating a configuration file; the core function of the configuration tool is to import ICD files of accessed 61850 server equipment and data files (hereinafter referred to as DAT files) of a ubiquitous power Internet of things big data processing platform, and generate CFG configuration files after data distribution mapping.
The CFG configuration file is described in a standard xml grammar format and is used for establishing an association relationship between the accessed 61850 server equipment data information and ubiquitous power Internet of things platform information and issuing the association relationship to a communication gateway for use. To ensure versatility, CFG profiles define the following standard data tags:
1) Header tag: describing the integral information of the CFG file, wherein the attribute content comprises a version number and a crc check code;
2) IED tag: one IED corresponds to one 61850 server device, and the attribute content comprises a server IP address and a server IED name; the IED consists of a series of Group tags;
3) Group tag: one-to-one correspondence with the report control blocks of 61850 server device, extracting from the ReportControl element of the ICD file, refining the unique identifier rptID of the record report control block;
ReportControl is an element (name: report control block) of ICD file, based on IEC61850-6 standard;
rptID is an element (name: report ID) of ICD file, based on IEC61850-6 standard;
4) Data tag: each tag represents a ubiquitous power internet of things data point, and contains two attributes, srcDataOfs and dstDataID. Where srcDataOfs represents the offset of the data in the 61850 server device corresponding report control block dataset and dstDataID represents the data number in the data corresponding DAT file.
The following is an example of a configuration file:
the second developed product is a communication gateway, is developed based on an embedded hardware platform, and internally comprises a 61850 client protocol processing unit and a ubiquitous power internet of things protocol processing unit, so that the functional contents of the steps S2-S5 of the invention are realized.
S2, step: initializing configuration; the communication gateway imports the CFG configuration file, the ubiquitous power internet of things protocol processing unit analyzes and obtains IED, group, data each layer of configuration, and configuration information is transmitted to the 61850 client protocol processing unit.
In order to save the message flow, the report control block trigger options and option domain attributes corresponding to the Group level are fixedly configured, and the configuration by CFG files is not needed. The triggering options are fixed by adopting integrity and data change triggering, and the integrity period is 3s; the options field adopts a minimized configuration, only configuring the necessary EntryID, entryData options.
S3, step: 61850 client protocol processing; the 61850 client protocol processing unit adopts 61850 client communication protocol according to the analyzed IED, group, data hierarchical configuration information to collect and read the data of each 61850 server device. Referring to fig. 2, comprising performing the steps of:
s31, step: IED channel assignments. According to the memory resource condition of the communication gateway, dividing 61850 client protocol processing into N channels, wherein each channel divides fixed memory resources for protocol processing data caching; on the premise of limiting a maximum channel number N, according to the total Data amount of the subordinate Data of each IED, the IED objects associated with each channel are distributed in an equalizing mode, so that the total Data amount processed by each channel is similar. Firstly, calculating the average Data total quantity Davg distributed by each channel, and sequencing the Data total quantity of each IED object, wherein the Data total quantity is N1, N2 and … Nm in sequence; then, performing a first round of channel allocation, and controlling the total Data amount of each channel to be lower than Davg; finally, carrying out channel allocation for the second round, and sequentially allocating the rest IEDs to a plurality of channels with the smallest total allocated data amount until all IEDs are allocated;
s32, step: initializing IED connection; each channel establishes a task, and the task establishes communication connection for each IED in turn according to the distributed IED object IP address and IED name attribute and performs MMS initialization;
s33, step: group initialization configuration; writing configuration values into each report control block according to the Group attribute, fixed report control block trigger options, option fields and integrity periods, and starting report service;
s34, step: interception of connection state; 61850 client channels monitor the network connection state of each IED object, if the network is normal, enter the next step S35, if abnormal, return to S32 to carry out connection initialization again;
s35, step: message receiving and caching; 61850 client channels receive network messages sent by each IED associated server device, filter the messages, only reserve MMS protocol messages, only reserve application layer protocol parts in the messages, and uniformly cache the messages;
s36, step: analyzing and processing the message; decoding the buffer message according to the MMS protocol, retrieving the corresponding Group object according to the rptID, sequentially obtaining corresponding values according to subordinate Data configuration content, and refreshing the decoded values to the ubiquitous power Internet of things protocol processing unit according to the Data node Data mapping relation in the CFG file.
S4, step: data filtering and caching; the ubiquitous power internet of things protocol processing unit acquires 61850 data refreshed by the client protocol processing unit, cleans and filters the data according to the data uploading requirement of the large data processing platform (acquired from the DAT file), converts the screened data from the IEC61850 data model into a local data model and caches the local data model, wherein the converted content comprises a data value, a data time scale and data quality.
The ubiquitous electric power internet of things protocol processing unit stores uploading data at regular time according to the requirement of the electric power big data platform at a certain interval time, and stores curve data for at least 15 days so that the electric power big data platform can supplement blank data in a transmission interruption period caused by network faults, and reliability and integrity of data transmission between the electric power big data platform and the communication gateway are guaranteed.
S5, step: uploading a ubiquitous electric power internet of things protocol; the ubiquitous power internet of things protocol processing unit is connected with the ubiquitous power internet of things big data processing platform in a standard SSL encryption mode, and logs in an MQTT server through an MQTT protocol to conduct data interaction transmission.
In order to ensure information security, after the communication gateway is successfully connected with the MQTT server, login registration is performed first; meanwhile, the data transmission adopts TLS to carry out secure encryption on the MQTT transmission content.
In order to improve transmission efficiency, the communication gateway and the ubiquitous power Internet of things big data platform adopt MQTT protocol interaction data based on a publishing and subscribing mode, the uploaded data are reasonably divided into a plurality of data sets aiming at different priority demands of the ubiquitous power Internet of things big data platform on the data, and different topics are defined for each data set. The communication gateway generally and periodically publishes the topics of analog quantity and electrical quantity in a timing way, publishes the topics corresponding to the alarm information in real time, and can receive the data content of the topics after subscribing the topics by the power big data platform.
The ubiquitous power internet of things protocol processing unit adopts three general data interfaces, namely getStationCfg (substation configuration is acquired), recvDataMsg (received data message) and sendDataMsg (sent data message), to realize information interaction with a ubiquitous power internet of things big data platform, supports the MQTT protocol, and can conveniently expand other ubiquitous power internet of things communication protocols.
The beneficial effects of the invention are as follows: 1. the invention fully utilizes the existing substation equipment investment and the communication network, and can realize the access of the substation data to the ubiquitous power Internet of things by only adding one communication gateway; 2. the ICD file and the DAT file are imported and the CFG file is generated, so that the access configuration of the data can be conveniently realized, and the field implementation workload is greatly reduced; 3. according to the invention, a plurality of IEDs are uniformly distributed on each 61850 client protocol processing channel, so that the system resource overhead is greatly reduced, and the running stability of the communication gateway is ensured; 4. in the message analysis link, the invention greatly reduces the processing pressure of network messages and protocol processing by adopting modes such as MMS message filtering, MMS application layer protocol stripping and the like, and avoids data loss or system breakdown caused by excessive access data of a transformer substation; 5. according to the invention, the data flow of accessing the ubiquitous power Internet of things is limited through data cleaning, and the data uploading can be realized through a lightweight wireless communication mode, so that the communication investment is saved; 6. the invention ensures the information security of communication access by adopting data encryption.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (9)
1. The method for accessing the substation data into the ubiquitous power Internet of things is characterized by comprising the steps of dividing a system into 61850 server equipment, 61850 client protocol processing units, ubiquitous power Internet of things protocol processing units and ubiquitous power Internet of things big data processing platforms, wherein the 61850 client protocol processing units and the ubiquitous power Internet of things protocol processing units are completed by a communication gateway;
the specific definition and association relation of the divided devices and processing units are as follows:
61850 server device: the 61850 server equipment comprises various protection, measurement and control and online monitoring devices in the transformer substation, the devices interact data with a 61850 client protocol processing unit through a 61850 protocol to finish uploading of the data and updating processing of configuration, and relevant data interaction contents are described through ICD files;
61850 client protocol processing unit: the 61850 client protocol processing unit is communicated with each 61850 server device, and the obtained monitoring data is refreshed to the ubiquitous power internet of things protocol processing unit; the ubiquitous electric power internet of things protocol processing unit: the ubiquitous power internet of things protocol processing unit filters and screens the received data of each server device of the transformer substation, and transmits the data to the ubiquitous power internet of things big data processing platform according to the requirements;
ubiquitous power internet of things big data processing platform: the ubiquitous power internet of things big data processing platform gathers substation data of scattered places, fuses the substation data with other power processing link information, and analyzes and processes big data;
the method further comprises performing the steps of:
s1, step: generating a configuration file; the configuration tool imports ICD file of the accessed 61850 server equipment and data file of the ubiquitous power Internet of things big data processing platform, and generates CFG configuration file after data distribution mapping;
s2, step: initializing configuration; the communication gateway imports the CFG configuration file, analyzes and obtains IED, group, data each level configuration by the ubiquitous power internet of things protocol processing unit, and transmits configuration information to the 61850 client protocol processing unit;
s3, step: 61850 client protocol processing; the 61850 client protocol processing unit adopts 61850 client communication protocol according to the analyzed IED, group, data hierarchical configuration information to collect and read the data of each 61850 server device;
s4, step: data filtering and caching; the ubiquitous power internet of things protocol processing unit acquires 61850 data refreshed by the client protocol processing unit, cleans and filters the data according to the data uploading requirement of the large data processing platform, converts the screened data from an IEC61850 data model into a local data model and caches the local data model, wherein the converted content comprises a data value, a data time scale and data quality;
s5, step: uploading a ubiquitous electric power internet of things protocol; the ubiquitous power internet of things protocol processing unit is connected with the ubiquitous power internet of things big data processing platform in a standard SSL encryption mode, and logs in an MQTT server through an MQTT protocol to carry out data interaction transmission;
in the step S3, the method further includes the steps of:
s31, step: IED channel allocation; according to the memory resource condition of the communication gateway, dividing 61850 client protocol processing into N channels, wherein each channel divides fixed memory resources for protocol processing data caching; on the premise of limiting a maximum channel number N, according to the total Data amount of the subordinate Data of each IED, the IED objects associated with each channel are distributed in a balanced manner, so that the total Data amount processed by each channel is similar;
s32, step: initializing IED connection; each channel establishes a task, and the task establishes communication connection for each IED in turn according to the distributed IED object IP address and IED name attribute and performs MMS initialization;
s33, step: group initialization configuration; writing configuration values into each report control block according to the Group attribute, fixed report control block trigger options, option fields and integrity periods, and starting report service;
s34, step: interception of connection state; 61850 client channels monitor the network connection state of each IED object, if the network is normal, enter the next step S35, if abnormal, return to S32 to carry out connection initialization again;
s35, step: message receiving and caching; 61850 client channels receive network messages sent by each IED associated server device, filter the messages, only reserve MMS protocol messages, only reserve application layer protocol parts in the messages, and uniformly cache the messages;
s36, step: analyzing and processing the message; decoding the buffer message according to the MMS protocol, retrieving the corresponding Group object according to the rptID, sequentially obtaining corresponding values according to subordinate Data configuration content, and refreshing the decoded values to the ubiquitous power Internet of things protocol processing unit according to the Data node Data mapping relation in the CFG file.
2. The method of claim 1, wherein in the step S1, the CFG configuration file is described in xml syntax format, and is used for establishing an association between the accessed 61850 server device data information and ubiquitous power internet of things platform information, and sending the association to a communication gateway for use.
3. The method according to claim 2, wherein in the step S1, the CFG profile contains the following data tags:
header tag: describing the integral information of the CFG file, wherein the attribute content comprises a version number and a crc check code;
IED tag: one IED corresponds to one 61850 server device, and the attribute content comprises a server IP address and a server IED name; the IED consists of a series of Group tags;
group tag: one-to-one correspondence with the report control blocks of 61850 server device, extracting from the ReportControl element of the ICD file, refining the unique identifier rptID of the record report control block;
data tag: each tag represents a ubiquitous power internet of things data point and comprises two attributes of srcdatafs and dstDataID, wherein srcdatafs represents the offset of the data in the data set of the corresponding report control block of the 61850 server device, and dstDataID represents the data number in the data corresponding DAT file.
4. The method according to claim 1, wherein in the step S2, the reporting control block trigger option and the option domain attribute corresponding to the Group hierarchy are configured fixedly without CFG file configuration, wherein the trigger option is triggered fixedly by integrity and data change, and the integrity period is 3S; the options field adopts a minimized configuration, only configuring the necessary EntryID, entryData options.
5. The method according to claim 1, characterized in that: in the step S31, the specific method is that firstly, the average Data total amount Davg allocated to each channel is calculated, and the Data total amounts of the IED objects are ordered, and N1, N2, … Nm are sequentially calculated; then, performing a first round of channel allocation, and controlling the total Data amount of each channel to be lower than Davg; and finally, carrying out channel allocation for the second round, and sequentially allocating the rest IEDs to the channels with the smallest total allocated data amount until all IEDs are allocated.
6. The method according to claim 1, characterized in that: in the step S4, the ubiquitous power internet of things protocol processing unit stores the uploading data at regular time according to a certain interval time and at least stores the curve data of 15 days so that the power big data platform can supplement blank data in a transmission interruption period caused by network faults and ensure the reliability and the integrity of data transmission between the power big data platform and the communication gateway.
7. The method according to claim 1, characterized in that: in the step S5, in order to ensure information security, after the communication gateway is successfully connected with the MQTT server, login registration is firstly carried out; meanwhile, the data transmission adopts TLS to carry out secure encryption on the MQTT transmission content.
8. The method according to claim 1, characterized in that: in the step S5, in order to improve transmission efficiency, the communication gateway and the ubiquitous power internet of things big data platform adopt MQTT protocol interaction data based on a publish and subscribe mode, aiming at different priority demands of the ubiquitous power internet of things big data platform on data, the uploaded data is reasonably divided into a plurality of data sets, different topics are defined for each data set, the communication gateway generally and periodically publishes the topics corresponding to analog quantity and electric quantity, and the topics corresponding to alarm information in real time, and after subscribing the topics, the electric power big data platform can receive the data content of the topics.
9. The method according to claim 1, characterized in that: in the step S5, the ubiquitous power internet of things protocol processing unit adopts getStationCfg, recvDataMsg, sendDataMsg three general data interfaces to realize information interaction with the ubiquitous power internet of things big data platform, supports the MQTT protocol, and can conveniently expand other ubiquitous power internet of things communication protocols.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121856.XA CN111242807B (en) | 2020-02-26 | 2020-02-26 | Method for accessing substation data into ubiquitous power Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121856.XA CN111242807B (en) | 2020-02-26 | 2020-02-26 | Method for accessing substation data into ubiquitous power Internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111242807A CN111242807A (en) | 2020-06-05 |
| CN111242807B true CN111242807B (en) | 2023-05-09 |
Family
ID=70875122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010121856.XA Active CN111242807B (en) | 2020-02-26 | 2020-02-26 | Method for accessing substation data into ubiquitous power Internet of things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111242807B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112243205A (en) * | 2020-10-23 | 2021-01-19 | 中国电子科技集团公司第二十八研究所 | Multi-protocol fusion processing method based on Internet of things |
| CN112653243B (en) * | 2020-12-23 | 2023-04-18 | 深圳供电局有限公司 | Method for communicating and linking substation equipment member and Internet of things information |
| CN113839992B (en) * | 2021-08-31 | 2023-09-19 | 青岛海尔科技有限公司 | Equipment control method and device |
| CN113691638B (en) * | 2021-10-26 | 2022-01-07 | 湖南前行科创有限公司 | Internet of things terminal data management and control method and system |
| CN116090494A (en) * | 2023-04-10 | 2023-05-09 | 中铁电气化勘测设计研究院有限公司 | Power supply equipment display system integrating AR code state identification |
| CN116910681B (en) * | 2023-09-12 | 2024-01-30 | 睿至科技集团有限公司 | Electric power data analysis method and system based on Internet of things |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162871A (en) * | 2015-09-22 | 2015-12-16 | 湘潭大学 | Energy Internet communication system based on ontology mapping and method thereof |
| CN105515819A (en) * | 2015-07-14 | 2016-04-20 | 国家电网公司 | IEC61850-based communication component and application component data interface method |
| CN106712001A (en) * | 2016-12-30 | 2017-05-24 | 国网浙江省电力公司绍兴供电公司 | Data modeling method for network message recording analysis device |
| CN109587228A (en) * | 2018-11-23 | 2019-04-05 | 济南浪潮高新科技投资发展有限公司 | A kind of publicly-owned agreement platform of internet of things and equipment cut-in method |
-
2020
- 2020-02-26 CN CN202010121856.XA patent/CN111242807B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515819A (en) * | 2015-07-14 | 2016-04-20 | 国家电网公司 | IEC61850-based communication component and application component data interface method |
| CN105162871A (en) * | 2015-09-22 | 2015-12-16 | 湘潭大学 | Energy Internet communication system based on ontology mapping and method thereof |
| CN106712001A (en) * | 2016-12-30 | 2017-05-24 | 国网浙江省电力公司绍兴供电公司 | Data modeling method for network message recording analysis device |
| CN109587228A (en) * | 2018-11-23 | 2019-04-05 | 济南浪潮高新科技投资发展有限公司 | A kind of publicly-owned agreement platform of internet of things and equipment cut-in method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111242807A (en) | 2020-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111242807B (en) | Method for accessing substation data into ubiquitous power Internet of things | |
| CN107390650B (en) | A kind of data collection system based on Internet of Things and the data compression method based on the system | |
| US20180337948A1 (en) | Method of industrial data communication with dedicated physical channel isolation and a system applying the method | |
| CN106651633A (en) | Power utilization information acquisition system and method based on big data technology | |
| CN107730394A (en) | The polynary isomeric data fusion method of panorama power network based on big data | |
| CN108989358B (en) | Method for acquiring running data of textile machine based on TCP/IP protocol | |
| CN101902497B (en) | Cloud computing based internet information monitoring system and method | |
| GB2574906A (en) | Pipeline data processing | |
| CN108322548A (en) | A kind of industrial process data analyzing platform based on cloud computing | |
| CN103379136A (en) | Compression method and decompression method of log acquisition data, compression apparatus and decompression apparatus of log acquisition data | |
| CN112925646A (en) | Electric power data edge calculation system and calculation method | |
| CN103248512A (en) | Method and system for generating topological structure of application layer in communication network | |
| CN105681285B (en) | A kind of isomery industry signal source information acquisition methods | |
| CN113179190B (en) | Edge controller, edge computing system and configuration method thereof | |
| US20200174435A1 (en) | Energy Information System, and Method and Device for Processing Energy Information | |
| CN108156222A (en) | A kind of gateway system and method based on cultivation Internet of Things | |
| CN103051055A (en) | Convergence controller | |
| CN112162829B (en) | Resource monitoring data preprocessing system under edge computing scene | |
| CN112327777A (en) | Data acquisition system and method | |
| CN111091240A (en) | Public institution electric power energy efficiency monitoring system and service method | |
| CN106790699A (en) | A kind of diesel engine cloud monitoring and cloud management system | |
| CN109491343A (en) | The long-range Internet of Things monitoring system of industrial manufacturing process | |
| CN101944768B (en) | Power equipment state monitoring method, device and system | |
| CN116527718A (en) | Data acquisition method and system for industrial Internet of things gateway | |
| CN114584429A (en) | Industrial intelligent internet of things gateway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |