CN105373891A - Smart grid data management and transmission system - Google Patents
Smart grid data management and transmission system Download PDFInfo
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- CN105373891A CN105373891A CN201510792525.8A CN201510792525A CN105373891A CN 105373891 A CN105373891 A CN 105373891A CN 201510792525 A CN201510792525 A CN 201510792525A CN 105373891 A CN105373891 A CN 105373891A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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Abstract
The invention provides a smart grid data management and transmission system for carrying out data transmission between a power production management system and a data management system and thus carrying out real-time monitoring on the operation state of the power system. According to the smart grid data management and transmission system provided by the invention, the transmission efficiency between the systems is improved, and influences on operation of the power system by transmission equipment fault can be reduced.
Description
Technical field
The present invention relates to electric network data process, particularly a kind of intelligent grid data management and transmission system.
Background technology
Along with popularizing of computer networking technology, the transmission storing process of the data message of each large electric power enterprise relies on computer network gradually and completes, and while raising the efficiency, invaded person have found the target of attack.Once system exists leak caused systemic breakdown by virus and Trojan attack, electric power enterprise not only can lose mass data information, also can upset originally orderly work.Invader attacks data management system by carrying rogue program, and the data security of infringement intelligent grid, causes electric system large-area power-cuts or other major accidents.Existing common safety practice has: configuring firewalls on terminal server, arranges IP and ports filter rule, installs antivirus software and carry out vulnerability scanning, intrusion detection, be divided into multiple virtual subnet.Above-mentioned measure serves certain effect safely for protected data management system, but still has certain limitation, and is easily found leak and carries out malicious operation and attack.In addition, between power production management system and data management system, the difficulty of data free communication increases, restricting data transmit diversity and have a strong impact on data rate.
Summary of the invention
For solving the problem existing for above-mentioned prior art, the present invention proposes a kind of intelligent grid data management and transmission system, for carrying out data transmission between power production management system and data management system, thus operation states of electric power system is monitored in real time.
Preferably, described intelligent grid data management and transmission system comprise device data processing unit, device data record cell, channel agent unit, connection establishment unit, device data Transmit-Receive Unit; Described device data processing unit be used for when device data process subelement newly-increased, delete, revise time or transmission facility data content, form change time, the process of Dynamic Maintenance device data; For the distinct device data layout of different transmission facility manufacturer, the data of dissection process isomery and file data, uniform data expression-form; Described device data processing unit for the device configuration information of power production management system collection, equipment alarm information, that device capability information completes data standard is unified;
Described device data record cell is used for carrying out storage administration to the data in system, when adding new transmission facility in data management system, device data is by arriving device data record cell after device data processing unit processes, whether Already in device data record cell judges this device data in database, if be present in database, then up-to-date data are compared with this equipment, if data and latest data record exist inconsistent, carry out conflict data processing; If there is no in database, then carry out new data record according to database table key assignments rule and insert; When deleting the transmission facility existed in data management system, perceive this equipment when carrying out network topological diagram and building deleted, and delete the data message with this device-dependent in a database; When the topological structure having increased transmission facility in data management system newly or change between equipment, the change of device data record cell judgment device data and conflict, and judge conflict degree, carry out true value and choose and be stored in database;
Described channel agent unit supports several data transmission channel, is that device data selects data transmission channel and dynamic configuration data transmission channel according to the feature of device data;
Described connection establishment unit is for setting up the connection of data transmission between power production management system and data management system, in forward data transmission direction, show at unidirectional gateway and penetrate electrical production Management System Data proxy IP address and data management system agent data server ip address and target port, adopt TCP or UDP channel, power production management system data are transferred to data management system with message form by unidirectional gateway; Reverse data transmission direction, show at unidirectional gateway and penetrate data management system agent data server ip address and power production management system agent data server ip address and target port, data management system data are transferred to power production management system by also usage data transmitting software in the form of an xml-file;
Described device data Transmit-Receive Unit is used for that real time data is directly pushed to system front end by memory database and represents; After data management system receives equipment alarm information, directly alert data is read in memory database, then warning message in memory database is stored in the preservation of data in magnetic disk library backup; For the device data of non real-time nature, be directly stored in disk database, wait for power consumer timing inquiry, data query represents in system front end renewal of the page after upgrading.
Preferably, before device data is stored into database, data memory module carries out preliminary data verification to data, the core field of data with existing in database data to be entered and database is compared, if there is identical data in database and warning message is recent renewal, then the equipment alarm information newly gathered is considered as redundant information, not write into Databasce;
The transmitting terminal of channel agent module is each data packet marking serial numbers before transmission data packet, after transmitting terminal sends data packet, wait-receiving mode end sends the reply having received this package and confirms, if do not receive the confirmation that this data packet is received in the given time, then transmitting terminal resends this package, when transmitting terminal receives the confirmation of receipt package of repetition, no longer resend data packet;
The process that described data management system receives data packet comprises: the file received when data management system is less than the size of file to be received, receives the data of sending from power production management system; If the data packet sequence number received in reception moving window, does not then abandon this packet data of reception; Receive in moving window if the data packet sequence number received is included in, then receiving data packet number increases by 1, and to power production management system transmission and reception receipt, receive moving window mobile backward, file reception is complete;
When utilizing UDP to connect, data management system is as server end, and listening port, when this port has data, receives this data; Server iterates receives the data from power production management system, by above-mentioned port, l bit acknowledgement information is back to power production management system after reception; Power production management system, as UDP client, arranges the schedule time receiving data, and arranges maximum number of times of retransmission data; Power production management system monitors the data received at above-mentioned port, definition is used for sending data and the example receiving data, and data are sent to data management system, and setting data Management System Data blocks maximum duration, retransmission data number of times is set, and whether receives the zone bit of data; Receive and send the confirmation receipt of returning from data management system, if the confirmation receipt received is not from destination address, then throw exception.
The present invention compared to existing technology, has the following advantages:
The present invention proposes a kind of intelligent grid data management and transmission system, the transfer efficiency between raising system, reduce transmission facility fault to the impact of Operation of Electric Systems.
Embodiment
Detailed description to one or more embodiment of the present invention is hereafter provided.Describe the present invention in conjunction with such embodiment, but the invention is not restricted to any embodiment.Scope of the present invention is only defined by the claims, and the present invention comprise many substitute, amendment and equivalent.Set forth many details in the following description to provide thorough understanding of the present invention.These details are provided for exemplary purposes, and also can realize the present invention according to claims without some in these details or all details.
The present invention is directed to the characteristic of data management system, design and Implement the transmission method of efficient data management subregion, under ensureing the prerequisite of data management system safe operation, improve the transfer efficiency between power production management system and data management system, ensure the real-time monitoring accomplished Operation of Electric Systems situation, once there is bad operation problem in transmission facility, can Timeliness coverage reporting ent managerial personnel, reduce transmission facility fault to the impact of Operation of Electric Systems.Meanwhile, the link related in the design of data transmission method is the least possible, and preventing increases the new leak attacked.
Intelligent grid data management and transmission system structure are divided into 5 unit: device data processing unit, channel agent unit, device data record cell, connection establishment unit, device data Transmit-Receive Unit.
In order to improve the validity of communications management system, avoid because the information inquiry efficiency that information content form difference is brought declines, in intelligent grid data management and transmission method, increase device data processing unit, Treatment Analysis is unified to data, thus reaches the object keeping data standard, uniform data interface.
The function of device data processing unit is as follows:
1) process of Dynamic Maintenance device data, comprise device data process subelement newly-increased, delete, amendment.When transmission facility data content, form change, dynamic conditioning device processes unit.
2) several data format analysis processing.For the distinct device data layout of different transmission facility manufacturer, device data processing unit can the data of dissection process isomery and file data, uniform data expression-form.
The data of power production management system collection are divided three classes: device configuration information, equipment alarm information, device capability information.Because equipment collection period is short in data management system, there is a large amount of repetition in the device data gathered in the short time, if do not do pre-service to Information Monitoring directly to put in storage, not only to data reliability without any guarantee, also can take database resource in a large number, and the low of later stage communications management system efficiency data query can be caused.When data generation redundancy, need to differentiate data degree of redundancy, choose true value according to related algorithm and store.
When device fails in data management system or device data occur to change, there are conflict data in the device data stored in the device data that acquisition server obtains and database, needs to make clear and definite judgement, guarantee data reliability during Data Update.
When adding new transmission facility in data management system, device data is by arriving device data record cell after device data processing unit processes, whether Already in device data record cell needs to judge this device data in database, if existed, then up-to-date data are compared with this equipment, if data and latest data record exist inconsistent, carry out conflict data processing; If there is no, then carry out new data record according to database table key assignments rule to insert.
When deleting the transmission facility existed in data management system, acquisition server cannot collect this device data again, when carrying out network topological diagram and building, this equipment can be perceived deleted, the data message with this device-dependent in database, should be deleted.Because there is incidence relation between table, key assignments in database, when database carries out data deletion, because considering the tandem that this kind of incidence relation determination data message is deleted.
When the topological structure having increased transmission facility in data management system newly or change between equipment, new device data acquisition can be uploaded by acquisition server.Device data record cell needs change and the conflict of judgment device data, and related algorithm can be used effectively to judge conflict data according to conflict degree, finally completes true value and chooses and be stored in database.
Method of the present invention breaks through physical port restriction by multichannel design, as much as possible enriches data delivering path.Channel agent unit is part most crucial in intelligent grid data management and transmission method, and wherein the selection of passage not only will defer to the physical restriction of gateway, also wants guarantee channel diversity can not drawing-in system leak, brings adverse influence to data management system.
In order to reduce the dependence of data transmission to passage, in order to improve data transmission efficiency, data transmission method needs to support several data transmission channel at channel agent unit.According to the specific features of transmission facility data be device data select data transmission channel.By to device data data volume size, real-time property require, power consumer to the comprehensive consideration of the requirement of data reliability, for often kind of device data chooses relevant data transmission channel.
The function of connection establishment unit breaks through the restriction of just unidirectional gateway, makes the communication between power production management system and data management system more efficient: the connection of setting up data transmission between power production management system and data management system.Forward data transmission direction, show at unidirectional gateway and penetrate electrical production Management System Data proxy IP address and data management system agent data server ip address and target port, adopt TCP or UDP channel, power production management system data are transferred to data management system with message form by unidirectional gateway.Reverse data transmission direction, data management system agent data server ip address and power production management system agent data server ip address and target port is penetrated except needs are shown at unidirectional gateway, also need the data transmission software using specific unidirectional gateway, data management system data are transferred to power production management system in the form of an xml-file.
Device data Transmit-Receive Unit real time data directly pushes to system front end by memory database and represents.After data management system receives equipment alarm information, directly alert data is read in memory database, warning message by reading data in memory database, can be directly presented in the power consumer front end warning page by power consumer.And then warning message in memory database is stored in the preservation of data in magnetic disk library backup.For the device data of non real-time nature, directly can be stored in disk database, wait for power consumer timing inquiry, data query represents in this system front end renewal of the page after upgrading.
Device data processing unit completes the function of equipment data form being carried out to unified structure, by to device data modeling, by the device configuration information of different vendor's different content form, device capability information, equipment alarm information unification in device data model, carry out unifying to store, transmit.
From target and the purpose of design angle of design, the function that database stores except realizing mass data, also should realize data sharing problem, problem of data safety, reduced data maintenance.This system database is carried out to the design of list structure.
Device data enters device data record cell after device data processing unit, before device data is stored into database, preliminary data verification can be carried out, the core field of data with existing in database data to be entered and database is compared, such as: type of alarm can be carried out to equipment alarm information, alarm level, warning reason three core fields compare, if there is identical data in database and warning message is recent renewal, then the equipment alarm information newly gathered is considered as redundant information, does not do the operation of write into Databasce.
Conflict data mostly occur in topology information, when the conflict that transmission facility in data management system has carried out increasing, deletes, the operation that changes can cause new image data and database data with existing.
Step 1: divide conflict type
In the face of conflict data, first can calculate the degree of conflict data, namely conflict comparison be carried out to each data field, then according to the significance level of conflict field and quantity, conflict data be classified: weak conflict type and type of conflicting by force.
Step 2: weak conflict type of process
By dividing conflict type, belonging to the conflict data of weak conflict type, can observe the spy that conflicts seized with terror, mark conflict position stores conflict information warehouse-in, waits for the collection of next topology information.By repeatedly topology information collection, conflict comparison, adopt the rule of ballot namely repeatedly topological data information repeat maximum data and win, be saved to database as true value, other conflict information deletions.
Weak conflict type conflict data need conflict outcome record to concentrate, as the logical model of reference during other conflict data processings to conflict exercise after solving.
Step 3: type of process of conflicting by force
When processing weak conflict class conflict data, the conflict exercise set pair conflict of the conflict class by force data of foundation solve and play very important effect.When strong conflict class conflict data, first observe conflict feature, mark conflict position stores conflict information warehouse-in.Then according to the data field of conflict data, remove the effective Rule of judgment of the interior searching of exercise level of conflicting, if find effective information, upgrade conflict data field, reduce conflict data degree.Continue the collection waiting for follow-up topology information, by the exercise of several times conflict data, the conflict of conflict class by force data are reduced conflict degree and dashes forward to weak conflict Lei Shuo Ju Red, finally find the way solving conflict data, post exercise true value is saved to database, deletes other conflict information.
Strong conflict type conflict data need conflict outcome record to concentrate, as the logical model of reference during other conflict data processings to conflict exercise after solving.
For channel agent module, because reliable UDP Path Setup is on unreliable IP tunnel basis, any mechanism data reliability is not provided, thus must solve message lose in transmitting procedure, repeat, arrive receiving end after the order problem such as entanglement and flow control.Therefore, transmitting terminal is each data packet marking serial numbers before transmission data packet, can ensure that receiving end can reorganize data packet according to sequence number on the one hand, finds to lose package, take over party can be enable on the other hand to avoid receiving repetition package, reduce the wasting of resources.After transmitting terminal sends data packet, wait-receiving mode end sends the reply confirmation having received this package, if do not receive the confirmation that this data packet is received in the given time, then transmitting terminal resends this package, thus solves the problem of data packetloss in network.
After arranging overtime retransmission mechanism respectively at transmitting terminal and receiving end, transmitting terminal sends a data packet and then wants wait-receiving mode termination to be subject to and reply confirmation.When transmitting terminal receives the confirmation of receipt package of repetition, no longer resend data packet.
From transmitting terminal angle, transmitting terminal requires that each data packet sends in order successively, but do not require to return according to confirmation order, as long as the data packet before window obtains confirmation of receipt, then window slides backward corresponding position, the data packet newly entering window below can send continuously, and therefore, in moving window, data packet is divided into following a few class:
1) to have sent but the data packet be not confirmed
2) also not send but the data packet that can send continuously
3) to have sent and the data packet be confirmed, but the data packet of sequence number before it also exists and is not confirmed.
From receiving end angle, receiving end is replied after receiving data packet and is confirmed, window slides backward corresponding position, and wait for subsequent serial numbers package, therefore, in moving window, data packet is divided into following a few class:
1) to have received but the data packet not having transmission and reception to confirm
2) also not receive but the data packet that can receive continuously
3) received and sent the data packet confirmed, but the data packet of sequence number before it also exists and do not send confirmation.
Connection establishment unit specific implementation choice for use Socket socket communication mode in intelligent grid data management and transmission method, uses TCP/UDP two kinds.
Power production management system
Step 1: create socket initialization and be used for connection data management system
Step 2: initiate connection request (forward transfer of virtual IP address: port) to data management system
Step 3: enter " send-receive " recurrent state
Step 4: close socket request
Data management system
Step 1: create socket and initialization (simultaneously needing power production management system and data management system socket)
Step 2: binding data Tomcat-AdminPortal socket
Step 3: monitored data Tomcat-AdminPortal
Step 4: wait for until receive power production management system request (rreturn value is power production management system socket)
Step 5: receive power production management system data
Step 6: close socket
Power production management system
Step 1: create socket initialization and be used for connection data management system
Step 2: go out data packet (forward transfer of virtual IP address: port) to data management system
Step 3: enter " send-receive " recurrent state
Step 4: close socket
Data management system
Step 1: create socket and initialization (simultaneously needing power production management system and data management system socket)
Step 2: binding data Tomcat-AdminPortal socket
Step 3: wait for until receive power production management system data
Step 4: close socket
For device configuration information, be below the step and the implementation procedure that realize configuration information modeling:
1. create device configuration information model, this model is used for the device data of storage configuration
2. circulation is read circulation and is read each field in vendor equipment configuration information, and by each field contents set to the respective field in structural model
3. cycling condition does not meet, and exits circulation, obtains network element device ED
When data occur to conflict, judge conflict data type by contrast conflict data field quantity and the significance level of conflict field in conflict data.By weak conflict process, finally judge that the device data after adjusting retains in a database as true value, other conflict information are deleted.
In reliable UDP transmission passage, power production management system is as server end, by the effective control sending moving window, completes UDP channel sliding window mechanism, thus realizes reliable UDP transmission.
When a data packet completes data transmission and receives the reception receipt sent from data management system, send moving window and slide backward a unit.Following three kinds of situations can be run in data packet process of transmitting, these three kinds of situations are processed respectively:
1. sent the whole file sizes waiting for transmission such as file size is less than and sent moving window forward position after transmission moving window along front.Now, send data packet, return false when sending data packet failure, data packet sends time-out and then resends data packet.
2. young in predetermined moving window and the file reading number of times of current sliding window is less than and needs file reading number of times.Now, send data packet and preserve the data packet sent, in order to retransmitting.When entire packet is sent, jumps out and send data partition circulation, DTD.
When a data packet completes data transmission and receives the reception receipt sent from data management system, data packet can be saved to backing sheet in order to retransmitting.When the pointer of file reading is not empty, represent that data packet sends well afoot, if data packet is confirmed, then this data packet is added backing sheet, if data packet is all sent, jump out circulation, data packet process of transmitting terminates.
In reliable UDP transmission passage, data management system is as client, by the effective control receiving moving window, completes UDP channel sliding window mechanism, realizes reliable UDP transmission.
When a data packet completes reception and sends data packet receipt, moving window slides backward a unit.Data packet receiving course is as follows: the file received when data management system is less than the size of file to be received, receives the data of sending from power production management system.
If the data packet sequence number 1. received in reception moving window, does not then abandon this packet data of reception.
2. receive in moving window if the data packet sequence number received is included in, then receiving data packet number increases by 1, to power production management system transmission and reception receipt, receives moving window mobile backward.File reception is complete.
UDP server end connection procedure:
1. data management system server monitors 3000 ports, when this port has data, receives this data
2. data management system server iterates receives the data from power production management system, by 3000 ports, l bit acknowledgement information is back to power production management system after reception
UDP client's side link process:
1. the schedule time receiving data is set, maximum number of times of retransmission data are set
2. power production management system monitors the data received at 3000 ports
3. define the example being used for sending data, define the example being used for receiving data
4. data are sent to data management system
5. setting data Management System Data blocks maximum duration, arranges retransmission data number of times, arranges the zone bit whether receiving data
6. receive and send the confirmation receipt of returning from data management system, if the confirmation receipt received is not from destination address, then throw exception.
TCP server end connection procedure:
1. the port numbers of specific data management system is 3000
2. set up TCP transmission to connect
3. encapsulation of data output stream
4. send 1 bit information to power production management system and receive receipt
5. close the output stream opened
6. close socket socket TCP client device end connection procedure:
1. create socket socket object, specify IP address and the port numbers of management data management system server, send TCP connection request, wait for data management system server process connection request
2. judge whether data management system agrees to TCP connection request, if do not agreed to, TCP connection failure of dishing out is abnormal
3. data management system agrees to TCP connection request, opens data packet inlet flow
4. encapsulation of data package inlet flow
5. close data packet inlet flow
6. close socket socket object
Access equipment alarm information efficiently in order to more directly perceived, be provided with in the device data Transmit-Receive Unit of data management system the high data of real-time received after, be first stored in memory database; Then be stored in disk database, retain warning message backup, so that the carrying out of subsequent query statistical operation.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to comprise fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (3)
1. intelligent grid data management and a transmission system, for carrying out data transmission between power production management system and data management system, thus monitors in real time to operation states of electric power system.
2. system according to claim 1, is characterized in that, described intelligent grid data management and transmission system comprise device data processing unit, device data record cell, channel agent unit, connection establishment unit, device data Transmit-Receive Unit; Described device data processing unit be used for when device data process subelement newly-increased, delete, revise time or transmission facility data content, form change time, the process of Dynamic Maintenance device data; For the distinct device data layout of different transmission facility manufacturer, the data of dissection process isomery and file data, uniform data expression-form; Described device data processing unit for the device configuration information of power production management system collection, equipment alarm information, that device capability information completes data standard is unified;
Described device data record cell is used for carrying out storage administration to the data in system, when adding new transmission facility in data management system, device data is by arriving device data record cell after device data processing unit processes, whether Already in device data record cell judges this device data in database, if be present in database, then up-to-date data are compared with this equipment, if data and latest data record exist inconsistent, carry out conflict data processing; If there is no in database, then carry out new data record according to database table key assignments rule and insert; When deleting the transmission facility existed in data management system, perceive this equipment when carrying out network topological diagram and building deleted, and delete the data message with this device-dependent in a database; When the topological structure having increased transmission facility in data management system newly or change between equipment, the change of device data record cell judgment device data and conflict, and judge conflict degree, carry out true value and choose and be stored in database;
Described channel agent unit supports several data transmission channel, is that device data selects data transmission channel and dynamic configuration data transmission channel according to the feature of device data;
Described connection establishment unit is for setting up the connection of data transmission between power production management system and data management system, in forward data transmission direction, show at unidirectional gateway and penetrate electrical production Management System Data proxy IP address and data management system agent data server ip address and target port, adopt TCP or UDP channel, power production management system data are transferred to data management system with message form by unidirectional gateway; Reverse data transmission direction, show at unidirectional gateway and penetrate data management system agent data server ip address and power production management system agent data server ip address and target port, data management system data are transferred to power production management system by also usage data transmitting software in the form of an xml-file;
Described device data Transmit-Receive Unit is used for that real time data is directly pushed to system front end by memory database and represents; After data management system receives equipment alarm information, directly alert data is read in memory database, then warning message in memory database is stored in the preservation of data in magnetic disk library backup; For the device data of non real-time nature, be directly stored in disk database, wait for power consumer timing inquiry, data query represents in system front end renewal of the page after upgrading.
3. system according to claim 1, it is characterized in that, before device data is stored into database, data memory module carries out preliminary data verification to data, the core field of data with existing in database data to be entered and database is compared, if there is identical data in database and warning message is recent renewal, then the equipment alarm information newly gathered is considered as redundant information, not write into Databasce;
The transmitting terminal of channel agent module is each data packet marking serial numbers before transmission data packet, after transmitting terminal sends data packet, wait-receiving mode end sends the reply having received this package and confirms, if do not receive the confirmation that this data packet is received in the given time, then transmitting terminal resends this package, when transmitting terminal receives the confirmation of receipt package of repetition, no longer resend data packet;
The process that described data management system receives data packet comprises: the file received when data management system is less than the size of file to be received, receives the data of sending from power production management system; If the data packet sequence number received in reception moving window, does not then abandon this packet data of reception; Receive in moving window if the data packet sequence number received is included in, then receiving data packet number increases by 1, and to power production management system transmission and reception receipt, receive moving window mobile backward, file reception is complete;
When utilizing UDP to connect, data management system is as server end, and listening port, when this port has data, receives this data; Server iterates receives the data from power production management system, by above-mentioned port, l bit acknowledgement information is back to power production management system after reception; Power production management system, as UDP client, arranges the schedule time receiving data, and arranges maximum number of times of retransmission data; Power production management system monitors the data received at above-mentioned port, definition is used for sending data and the example receiving data, and data are sent to data management system, and setting data Management System Data blocks maximum duration, retransmission data number of times is set, and whether receives the zone bit of data; Receive and send the confirmation receipt of returning from data management system, if the confirmation receipt received is not from destination address, then throw exception.
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| CN109917761A (en) * | 2019-03-13 | 2019-06-21 | 浙江浙能长兴天然气热电有限公司 | A kind of method and system improving DCS of Power Plant security protection |
| CN112506093A (en) * | 2020-11-12 | 2021-03-16 | 国网江苏省电力有限公司连云港市赣榆区供电分公司 | Office full-automatic system for power grid dispatching |
| CN115158410A (en) * | 2022-07-27 | 2022-10-11 | 西门子交通技术(北京)有限公司 | Train operation control system, method, electronic device and storage medium |
| CN115550431A (en) * | 2022-08-31 | 2022-12-30 | 山东爱普电气设备有限公司 | Unidirectional data transmission method and system based on power Internet of things terminal |
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