CN104468703A - Communication method and system for distributed small power source and upper computer - Google Patents
Communication method and system for distributed small power source and upper computer Download PDFInfo
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- CN104468703A CN104468703A CN201410559874.0A CN201410559874A CN104468703A CN 104468703 A CN104468703 A CN 104468703A CN 201410559874 A CN201410559874 A CN 201410559874A CN 104468703 A CN104468703 A CN 104468703A
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- 230000006854 communication Effects 0.000 title abstract description 29
- 238000004891 communication Methods 0.000 title abstract description 23
- 238000005538 encapsulation Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 230000000875 corresponding effect Effects 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002674 ointment Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H02J13/0013—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/28—Timers or timing mechanisms used in protocols
Abstract
Provided are a communication method and system for a distributed small power source and an upper computer. The method includes the step of obtaining information to be transmitted; the step of encapsulating the information to be transmitted as data packets in corresponding frame formats according to the type of the information to be transmitted, wherein the frame formats comprise the fixed frame formats of fixed frame lengths and the lengthened frame formats of variable frame lengths; the step of transmitting the data packets to a receiver. According to the communication method and system, the formats of the transmitted data packets can be more compact, communication traffic can be utilized more reasonably and effectively and is saved, communication stability of the small power source and the upper computer can be improved, real-time monitoring of the distributed small power source is achieved, and cost is low.
Description
Technical field
The present invention relates to field of power communication, particularly the communication means of a kind of small distributed power and host computer and system.
Background technology
Along with national grid is to the popularization of new forms of energy, the generations of electricity by new energy such as water power, wind-powered electricity generation and photovoltaic generation are popularized.Because new forms of energy are high by the extraneous factor effect such as weather, the impact therefore caused electrical network is also larger.For small power station, the energy output of small power station is comparatively large by the impact of current, only the wet season small power station could run well, in dry season, small power station is then in shut down condition.In addition, affect by interests, small power station, for improving energy output, owes the idle idle deficiency on mains network that will cause; Due to its unsteadiness, also can produce very large harm, such as, resident's household electrical appliance during overtension, can be caused to be burnt, even can breaking out of fire.
Therefore, very necessary to the monitoring of distributed power source, but distributed power source quantity is many, distribution is wide and mostly be the features such as remote districts and determine manual monitoring and can not analyze and examine power generating quality timely and accurately, if and these local laid to special communication ports and can produce high expense, do not meet actual state.And do not lay proprietary communication passage realize again to small distributed power monitoring prerequisite under, monitoring in real time small distributed power by existing communication network (such as 3G communication network), is an economically viable approach; But existing communication protocol has and self has characteristics and available field, as IEC 60870-101 agreement and IEC 60870-104 agreement are applicable between transformer station and control centre, their feature is that real-time property is high simultaneously high to the requirement of communication port, and 3G communication network can not meet its requirement; And power user power consumption information acquisition system communication protocol (Q/GDW 376.1) real time data part adopts set form, the packet of regular length carries out transfer of data, and small power supply monitor mode and type have its particularity, transmit with it, some information can not fill up whole packet, waste communication flows, and some information may exceed the length that packet is specified, the reliability of communication can be had influence on, the demand of small distributed power being carried out to monitoring in real time can not be met.
Summary of the invention
Based on this, the object of the embodiment of the present invention, is the method and system providing a kind of small distributed power to communicate with host computer, and it can improve the reliability that small distributed power communicates with host computer, can realize the timely monitoring to small distributed power, and cost is low.
For achieving the above object, the embodiment of the present invention by the following technical solutions:
The method that small distributed power communicates with host computer, comprises step:
Obtain information to be sent;
Be the packet of corresponding frame format by described Information encapsulation to be sent according to the type of described information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length;
Described packet is sent to recipient.
The system that a kind of small distributed power communicates with host computer, comprise be arranged on small distributed power from client, to be sent to the first information to be sent of host computer for obtaining, be the first packet of corresponding frame format by described first Information encapsulation to be sent according to the type of described first information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length, and is sent to host computer by described first packet.
Based on the scheme of the embodiment of the present invention as above, when it will send information, it is the type based on information to be sent, for different types, different frame formats is adopted to encapsulate information, for the information to be sent of particular type, the fixing anchor-frame form of frame length is adopted to carry out encapsulating rear transmission, for the information to be sent of other types, such as data class information, the variable elongated frame format of frame length is adopted to carry out encapsulating rear transmission, thus sent data packet format can be made compacter, communication flows can be utilized more rationally and effectively, save communication flows, and then the stability that small power supply communicates with host computer can be improved, realize the real-time monitoring to small distributed power, and cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method that the small distributed power in an embodiment communicates with host computer;
Fig. 2 is the time diagram of small distributed power in a concrete example and host computer communication process;
Fig. 3 is the structural representation of the system that the small distributed power in an embodiment communicates with host computer.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein only in order to explain the present invention, do not limit protection scope of the present invention.
The schematic flow sheet of the method that the small distributed power in one embodiment of the invention communicates with host computer has been shown in Fig. 1.As shown in Figure 1, the method in the present embodiment comprises step:
Step S101: obtain information to be sent;
Step S102: the packet according to the type of described information to be sent by described Information encapsulation to be sent being corresponding frame format, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length;
Step S103: described packet is sent to recipient.Wherein, recipient here, when being sent by small power supply, can refer to host computer, when host computer sends, then can refer to small power supply.
Based on the scheme of the embodiment of the present invention as above, when it will send information, it is the type based on information to be sent, for different types, different frame formats is adopted to encapsulate information, for the information to be sent of particular type, the fixing anchor-frame form of frame length is adopted to carry out encapsulating rear transmission, for the information to be sent of other types, such as data class information, the variable elongated frame format of frame length is adopted to carry out encapsulating rear transmission, thus sent data packet format can be made compacter, communication flows can be utilized more rationally and effectively, save communication flows, and then the stability that small power supply communicates with host computer can be improved, realize the real-time monitoring to small distributed power, and cost is low.
Wherein, as shown in Figure 1, in a concrete example, between above-mentioned steps S102 and step S103, step can also be comprised:
Step S1023: the packet after described encapsulation is encrypted.
Thus, transmit again after the packet after encapsulation is encrypted, the fail safe of transmitted data can be ensured further.
Wherein, in a concrete example, the type of described information to be sent be landing request information, login response information, heartbeat packet information, heartbeat response message, pair time response message, eartbeat interval any one in response message, control documents data response message is set time, be the packet of anchor-frame form by described Information encapsulation to be sent.Wherein, described anchor-frame form can comprise: function code, terminal address, transmission type, check code.
Correspondingly, when when the type of described information to be sent is pair, command information, eartbeat interval arrange any one in command information, control documents data command information, real time data querying command, real time data inquiry response information, the inquiry of historical data order, the inquiry of historical data response message, terminal running state data message, be the packet of elongated frame format by described Information encapsulation to be sent.Wherein, described elongated frame format can comprise: function code, terminal address, transmission type, data length, data content, check code.
Method shown in composition graphs 1, the process communicated with host computer below in conjunction with one of them concrete small distributed power is that example is described.In following example illustrates, be the communication mode of unbalanced between small power supply and host computer, and to represent small power supply from machine, main frame represents host computer, illustrate in conjunction with the communication process between slave.
In this concrete example, carry out, in the communication process communicated, defining the frame of two kinds of forms at small power supply and host computer: anchor-frame and elongated frame.Anchor-frame is used for slave station and logs in and heartbeat and validation of information, and a frame structure of anchor-frame is as shown in table 1 below, as shown in table 1, and anchor-frame comprises function code, terminal address, transmission reason and CRC check code.
The frame structure of table 1 anchor-frame
Elongated frame for issue configuration information, inquiry in real time/historical data, timed task issue, the reporting of real time data/historical data/warning information and terminal running state, the issuing of control strategy, transfer files etc., the frame structure of elongated frame is as shown in table 2 below, as shown in table 2.Elongated frame comprises function code, terminal address, transmission reason, data length, data content and CRC check code.
The frame structure of the elongated frame of table 2
In master-salve station communication process, used function code can do following setting: function code 0x01: slave station logs in; Function code 0x02: heart-beat test; Function code 0x03: pair time; Function code 0x04: eartbeat interval is arranged; Function code 0x05: control documents issues; Function code 0x06: real time data is inquired about; Function code 0x07: the inquiry of historical data; Function code 0x08: terminal running state send.
In master-salve station communication process, used transmission reason can do following setting: transmit reason 0x01: send request; Transmit reason 0x02: request confirms; Transmit reason 0x03: request is denied; Transmit reason 0x04: transmitting order to lower levels; Transmit reason 0x05: response data.
Based on above-mentioned setting, be described in detail below in conjunction with the communication process between the slave in the concrete example of shown in Fig. 2.
As shown in Figure 2, after powering on from machine, initiatively connect with main website, send logging request to main website.The frame structure of this log on request is anchor-frame, and the frame structure of the log on request that slave station sends is as shown in table 3 below.
Table 3 is from the frame structure of machine log on request
After main website receives the log on request sent from machine, after the log on request of slave station is verified, to slave station return the log on request of slave station confirmed or denies log in response.This frame structure logging in response is anchor-frame, and the frame structure logging in response in an example is as shown in table 4 below.
Table 4 logs in the frame structure of response
In order to ensure the stability of connection at reliability and the master and slave station communicated, logining successfully rear timing send heartbeat message to main website, to test connection from standing in.The data frame structure of heartbeat message is anchor-frame, specifically can be as shown in table 5 below.
The data frame structure of table 5 heartbeat message
After main website receives the heartbeat message of slave station transmission, return heartbeat message response to slave station, the heartbeat message of slave station is added their confirmation or denies.The data frame structure of heartbeat message response is anchor-frame, specifically can be as shown in table 6 below.
The frame structure of table 6 heartbeat message response
In order to ensure the accuracy of terminal data, main website, after slave station logins successfully, orders to during slave station transmission pair, to ensure the consistent of master and slave station time.During main website transmission pair, the data frame structure of order is elongated frame, specifically can be as shown in table 7 below.
The data frame structure of order during the transmission pair of table 7 main website
Slave station receive that main website sends pair time order after, command response when to return pair to main website, realize with main website pair time.Pair time command response data frame structure be elongated frame, specifically can be as shown in table 8 below.
The data frame structure of command response during table 8 pair
In order to ensure the reliability of data, main website, for the data of the slave station received, must confirm.After standing in and sending data, such as, if after wait certain hour section, 5 seconds, do not receive the confirmation data that main website returns, then resend data.If after the certain number of times of continuous retransmission, such as 3 times, all do not receive the confirmation data that main website returns, then slave station initiatively disconnects the connection with main website, and slave station sends logging request to main website again, again logs in main website.
For realizing the Remote configuration to terminal, main website issues relevant configuration information and control information by communication protocol to slave station, such as: the inquiry of eartbeat interval, control strategy, program updates, real time data, the inquiry of historical data, inquiry/arrange clock, timed task issues, transfer files.
For eartbeat interval, in a concrete example, the data packet frame structure that main website arranges instruction to the eartbeat interval arranging eartbeat interval that slave station issues is as shown in table 9 below, and it is elongated frame structure.
Table 9 eartbeat interval arranges the data frame structure of instruction
Slave station receives after eartbeat interval arranges instruction, arranges based on this eartbeat interval instruction setting the to send time interval from heartbeat message to main website, after setting, can arrange response, whether successfully to arrange eartbeat interval to main website feedback to main website feedback eartbeat interval.The data frame structure that eartbeat interval in a concrete example arranges response is as shown in table 10 below, and it is anchor-frame structure.
Table 10 eartbeat interval arranges the data frame structure of response
For control documents, in a concrete example, main website issues data packet frame structure from the instruction (being called control documents data command in the present embodiment) of control documents to slave station is as shown in table 11 below, and it is elongated frame structure.
The data packet frame structure of table 11 control documents data command
After slave station receives control documents data command, response can be set to main website feedback file data format, whether successfully to receive control documents to main website feedback and/or whether successfully to carry out relevant setting.For feedback is whether successfully receive control documents, and the data frame structure of the control documents data response in a concrete example is as shown in table 12 below, and it is anchor-frame structure.
The data packet frame structure of table 12 control documents data response
After slave station receives control documents data command, carry out the setting of being correlated with based on this control documents, then just process accordingly according to the parameter after arranging.
Based on actual needs, main website can send real time data query statement to slave station, with the real time data of active inquiry slave station.The data frame structure of the real-time query data command in a concrete example is as shown in table 13 below, and it is elongated frame structure.
The data frame format of table 13 real-time query data command
After slave station receives real time data query statement, obtain Real-time Monitoring Data, and based on the Real-time Monitoring Data obtained to main website returning real-time data inquiry response.The data frame structure of the real time data inquiry response in a concrete example is as shown in table 14 below, and it is elongated frame structure.
The data frame format of table 14 real time data inquiry response
Based on actual needs, main website can also send the inquiry of historical data instruction to slave station, to inquire about the historical data of slave station record.The data frame structure of the inquiry of historical data instruction in a concrete example is as shown in table 15 below, and it is elongated frame structure.
The data frame structure of table 15 the inquiry of historical data instruction
After slave station receives the inquiry of historical data instruction, obtain corresponding historical data, and return the inquiry of historical data response based on this historical data to slave station.The data frame format of the inquiry of historical data response in a concrete example is as shown in table 16 below, and it is elongated frame structure.
The data frame structure of table 16 the inquiry of historical data response
In addition, the timed task that slave station can issue according to main website, the data that timing active upload is relevant, such as real time data, historical data, warning information and terminal running state are to main website.In a concrete example, the data frame structure of the terminal running state data of slave station active upload is as shown in table 17 below, and it is elongated frame structure.
The data frame structure of table 17 terminal running state data
It should be noted that, in order to ensure the fail safe of data, the data sent between master and slave station are sending after can encrypting.After master and slave station receives data, first to the decrypt data received, then carry out Data Analysis for the data after deciphering;
Based on the thought identical with the method for the invention described above embodiment, the system that the embodiment of the present invention also provides a kind of small distributed power to communicate with host computer.The structural representation of the system in a concrete example has been shown in Fig. 3.System in the present embodiment, can only comprise be arranged on small distributed power from client 301, also only can comprise and be arranged on main service side used 302 of host computer, can also comprise from client 301 and main service side used 302 simultaneously.On the other hand, can be provided with multiple from the number of client 301, be separately positioned in each small power supply equipment.For ease of illustrating, in shown in Fig. 3, illustrate only in three small power supply equipment and arranging one respectively from client, and be comprise being described for example from client 301 and main service side used 302 simultaneously, this explanation is not in order to form restriction to the present invention program.
As shown in Figure 3, the system in the present embodiment comprises:
Be arranged on small distributed power from client 301, to be sent to the first information to be sent of host computer for obtaining, be the first packet of corresponding frame format by described first Information encapsulation to be sent according to the type of described first information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length, and is sent to host computer by described first packet;
Be arranged on main service side used 302 of host computer, to be sent to the second information to be sent of small power supply for obtaining, and be the second packet of corresponding frame format by described second Information encapsulation to be sent according to the type of described second information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length, and is sent to small power supply by described second packet.
Wherein, from client 301 by the first packet to host computer send and main service side used second packet is sent to small power supply time, can be respectively the first packet obtained after encapsulation, the second packet are transmitted after being encrypted again, the fail safe of transmitted data can be ensured further.
Wherein, in a concrete example, the type of described first information to be sent be landing request information, heartbeat packet information, pair time response message, eartbeat interval any one in response message, control documents data response message is set time, described is the packet of anchor-frame form by described first Information encapsulation to be sent from client.Correspondingly, when the type of described first information to be sent is any one in real time data inquiry response information, the inquiry of historical data response message, terminal running state data message, described is the packet of elongated frame format by described first Information encapsulation to be sent from client.
Correspondingly, in another specific example, the type of described second information to be sent be login response information or heartbeat response message time, described main service side used be the packet of anchor-frame form by described second Information encapsulation to be sent.Correspondingly, when when the type of described second information to be sent is pair, command information, eartbeat interval arrange any one in command information, control documents data command information, real time data querying command, the inquiry of historical data order, described main service side used be the packet of elongated frame format by described second Information encapsulation to be sent.
Wherein, above-mentioned anchor-frame form can comprise: function code, terminal address, transmission reason, check code, and described transmission reason comprises request, confirms, denies, orders, responds; Above-mentioned elongated frame format can comprise: function code, terminal address, transmission reason, data length, data content, check code.
In the embodiment of the present invention, the other technologies feature of system and identical in said method, no longer launch to repeat at this.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the method that communicates with host computer of small distributed power, is characterized in that, comprise step:
Obtain information to be sent;
Be the packet of corresponding frame format by described Information encapsulation to be sent according to the type of described information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length;
Described packet is sent to recipient.
2. the method that communicates with host computer of small distributed power according to claim 1, it is characterized in that, the type of described information to be sent be landing request information, login response information, heartbeat packet information, heartbeat response message, pair time response message, eartbeat interval any one in response message, control documents data response message is set time, be the packet of anchor-frame form by described Information encapsulation to be sent.
3. the method that communicates with host computer of small distributed power according to claim 1, it is characterized in that, when when the type of described information to be sent is pair, command information, eartbeat interval arrange any one in command information, control documents data command information, real time data querying command, real time data inquiry response information, the inquiry of historical data order, the inquiry of historical data response message, terminal running state data message, be the packet of elongated frame format by described Information encapsulation to be sent.
4. the method that the small distributed power according to claims 1 to 3 any one communicates with host computer, is characterized in that:
Described anchor-frame form comprises: function code, terminal address, transmission type, check code;
And/or
Described elongated frame format comprises: function code, terminal address, transmission type, data length, data content, check code.
5. the method that the small distributed power according to claims 1 to 3 any one communicates with host computer, it is characterized in that, after the packet being encapsulated as corresponding frame format, before being sent to recipient by described packet, also comprise step: the packet after described encapsulation is encrypted.
6. the system that communicates with host computer of a small distributed power, it is characterized in that, comprise be arranged on small distributed power from client, to be sent to the first information to be sent of host computer for obtaining, be the first packet of corresponding frame format by described first Information encapsulation to be sent according to the type of described first information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length, and is sent to host computer by described first packet.
7. the system that communicates with host computer of small distributed power according to claim 6, is characterized in that:
The type of described first information to be sent be landing request information, heartbeat packet information, pair time response message, eartbeat interval any one in response message, control documents data response message is set time, described is the packet of anchor-frame form by described first Information encapsulation to be sent from client;
When the type of described first information to be sent is any one in real time data inquiry response information, the inquiry of historical data response message, terminal running state data message, described is the packet of elongated frame format by described first Information encapsulation to be sent from client.
8. the system that communicates with host computer of small distributed power according to claim 6, it is characterized in that, also comprise and be arranged on the main service side used of host computer, to be sent to the second information to be sent of small power supply for obtaining, and be the second packet of corresponding frame format by described second Information encapsulation to be sent according to the type of described second information to be sent, described frame format comprises the variable elongated frame format of anchor-frame form that frame length fixes, frame length, and is sent to small power supply by described second packet.
9. the system that communicates with host computer of small distributed power according to claim 8, is characterized in that,
The type of described second information to be sent be login response information or heartbeat response message time, described main service side used be the packet of anchor-frame form by described second Information encapsulation to be sent;
When the type of described second information to be sent is pair, command information, eartbeat interval arrange any one in command information, control documents data command information, real time data querying command, the inquiry of historical data order, described main service side used be the packet of elongated frame format by described second Information encapsulation to be sent.
10. the system that the small distributed power according to claim 6 to 9 any one communicates with host computer, is characterized in that,
Described anchor-frame form comprises: function code, terminal address, transmission reason, check code, and described transmission reason comprises request, confirms, denies, orders, responds;
Described elongated frame format comprises: function code, terminal address, transmission reason, data length, data content, check code.
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| CN106951500A (en) * | 2017-03-16 | 2017-07-14 | 国电南瑞科技股份有限公司 | A kind of power scheduling distant place historical record inquiry system and method |
| CN109194494A (en) * | 2018-06-28 | 2019-01-11 | 武汉船用机械有限责任公司 | A kind of communication means based on inert gas system, device and system |
| CN109194494B (en) * | 2018-06-28 | 2022-10-04 | 武汉船用机械有限责任公司 | Communication method, device and system based on inert gas system |
| CN113489794A (en) * | 2021-07-07 | 2021-10-08 | 智洋创新科技股份有限公司 | Communication interaction method for intelligent identification master station and intelligent station end equipment of transformer substation |
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Application publication date: 20150325 |