CN101599998A - A kind of method for transmitting telecontrol data through particular channel - Google Patents
A kind of method for transmitting telecontrol data through particular channel Download PDFInfo
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- CN101599998A CN101599998A CNA2009101816321A CN200910181632A CN101599998A CN 101599998 A CN101599998 A CN 101599998A CN A2009101816321 A CNA2009101816321 A CN A2009101816321A CN 200910181632 A CN200910181632 A CN 200910181632A CN 101599998 A CN101599998 A CN 101599998A
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Abstract
A kind of telecontrol data through particular channel transfer approach is finished the correspondence mappings of serial ports to the Ethernet tcp port, it is characterized in that may further comprise the steps: A. factory station end is multiplexed to the E1 signal to rs 232 serial interface signal, and the B. central station becomes ethernet signal to the E1 conversion of signals.Rs 232 serial interface signal is by the transmission of E1 designated lane in this programme, corresponding one road 2M passage of one road serial ports, rs 232 serial interface signal in one road 2M passage is mapped to two tcp ports of Ethernet, simple in structure, networking flexibility, reliability height, satisfy the data dispatching network to practicality, safety, reliable, ensure real-time requirement.
Description
Technical field
The present invention relates to a kind of Operation of Electric Systems data transmission method that is applied to, particularly relate to a kind of method for transmitting telecontrol data through particular channel.
Background technology
Power scheduling is one of most crucial business of power industry.Electric power dispatching system is made up of control centre and dispatch terminal (RTU) two large divisions.The power scheduling automatic system for monitoring can cover intensive electric network information by each far-end collecting unit (RTU) collection of disperseing, and realizes functions such as the supervision of real-time data acquisition, real-time power network running status and demonstration, Long-distance Control and adjusting, accident alarming, out-of-limit/the displacement warning, data computation statistics, job information login, automated system running state monitoring, emergency review.
As the bearer network of electric power dispatching system, the primary requirement of power dispatch data network is exactly reliable, stable, safety, guarantee dispatch automated system to the monitoring of electrical network can be accurately, carry out incessantly.Power dispatch data network must be a high real-time network simultaneously, and guaranteed end-to-end delay can be provided.
Current, the dispatching automation data transfer mode mainly contains 2 kinds of modes: Network Transmission and designated lane transmission.Though Network Transmission is the main developing direction of automation data transmission from now on, the special line telecontrol channel has advantages such as transmission reliability height, time-delay are little, is the not available characteristics of Network Transmission mode.Therefore, the transformer station that put into operation of the current overwhelming majority still needs the special line transmission means.
Special-purpose telecontrol channel mode has continued nearly 40 years, is subjected to the restriction of communication condition in early days, and factory's station end need be delivered to digital signal main website demodulation reduction after ovennodulation.New last factory station, main website must increase a modulator-demodulator, in debug process, all will link up with the factory station for centre frequency, signal polarity, speed etc.Though communication condition is greatly improved now, message transmission is slow, the error rate is high, inefficient shortcoming never gets a new look.
At present, the transmission channel of Automation of Electric Systems data is to adopt conventional telecontrol channel and two kinds of modes of power dispatch data network (SPDnet) passage, and wherein the transmission means of data network passage is shown in Fig. 1 solid line, and dotted portion is the designated lane transmission means.
As shown in Figure 2, the serial data interface of transformer station's terminal equipment links to each other with one four line Modem, also has one four line Modem corresponding with the Modem of transformer station at central station.Like this, just can realize communicating by letter between transformer station's terminal equipment and the central station equipment by a pair of four line Modem.The drawback performance of this kind scheme is as follows:
1,4 line Modem are analog interface, and the data of transmitting by 4 line Modem are vulnerable to external interference.
2, the analog interface of the equipment of design often lacks necessary safeguard measure many years ago, is very easy to damage (all may produce it as static, thunderbolt, machine room induced electricity etc. and destroy);
3, the signal of 4 line Modem generally can not directly pass through Network Transmission such as SDH, ATM, and necessity adds a cover interconnecting device, so not only can increase communication channel delay, also can increase the probability that passage breaks down.
In view of above some, current transmission means can not satisfy the reliable transmission requirement of power scheduling data stabilization.
Summary of the invention
The objective of the invention is a kind of method that proposes by 2M private-line mode transmission remote action data in order to solve the various drawbacks that existing designated lane transmission remote action data exists, substitute conventional remote action data transmission method, improve the designated lane information transfer efficiency, reduce transmission intermediate link, improve the reliability of system.
The present invention is the technical scheme that proposes for solving the problems of the technologies described above: factory's station end is connected by designated lane with central station, finishes the correspondence mappings of serial ports to the Ethernet tcp port, may further comprise the steps: A, factory's station end are multiplexed to the E1 signal to rs 232 serial interface signal; B, central station become ethernet signal to the E1 conversion of signals;
Rs 232 serial interface signal described in the steps A is multiplexed to the E1 signal and comprises the steps: that A1, the remote action data of uploading by serial ports at first pass through the HDLC framing; Remote action data behind A2, the framing is multiplexed in one road 2M passage; The serial ports control command that A3,2M passage pass is down separated the HDLC frame earlier, removes to control serial ports then;
E1 conversion of signals described in the step B becomes ethernet signal to comprise the steps: that the remote action data of uploading in B1, the 2M passage separates the HDLC frame; B2, separate the tcp data port that remote action data behind the frame is mapped to Ethernet; Remote action data on B3, the FPDP is with TCP mode and software server swap data; The control command of control serial ports configuration parameter is organized the HDLC frame earlier in the TCP control port of B4, Ethernet, is multiplexed into then in the 2M passage;
One road rs 232 serial interface signal is by the transmission of one road 2M designated lane, and its remote action data is mapped to a data tcp port of Ethernet, and control command is mapped to a control of Ethernet tcp port;
A central station can connect many factory's station equipments, and factory's station equipment can have a plurality of serial ports.
Described designated lane is meant the 2M passage of POWER SYSTEM SDH transmission network.
The benefit of such scheme is: simple in structure, and networking flexibility, the reliability height satisfies the data dispatching network to practicality, and safety is reliable, ensures real-time requirement.
Description of drawings
Fig. 1 is a current power system remote action data transmission schematic diagram
Fig. 2 is a current power system remote action data special line transmission means schematic diagram
Fig. 3 is telecontrol data through particular channel transmission means networking structure figure
Fig. 4 is the mapping relations of software server and central station
Fig. 5 is factory's station end multiple connection device instance structure chart
Fig. 6 is a central station multiple connection device instance structure chart
Embodiment
The present invention adopts a kind of method for transmitting telecontrol data through particular channel, and its networking structure figure as shown in Figure 3.
1. the far-end collecting unit (RTU) of transformer station is exported serial signal, and the multi-path serial signal is input to factory's station end multiple connection equipment, and this equipment possesses the multiple connection function of serial data to the E1 passage, directly goes out the E1 interface;
2. central station data multiplex equipment is then realized data and the mutual translation function of Ethernet data in a plurality of E1 passages, makes the port numbers of Ethernet and string slogan form corresponding relation;
3. the factory station is connected by electric power SDH network 2M passage with central station;
4. factory station end multiple connection equipment is supported a plurality of serial data inputs, a plurality of E1 outputs; Central station multiple connection equipment is supported a plurality of E1 inputs, Ethernet interface output.
Be illustrated in figure 4 as the port mapping relation of central station multiple connection equipment and software server:
1. central station is as the TCP server, and software server is as the TCP client;
2. the virtual serial port correspondence of the port numbers of central station multiple connection equipment and central station software server;
3. software server is operated virtual serial port, to factory's station end serial ports configuration parameter, reads RTU remote action data by FPDP by the central station control port.
Factory's station end with the input of four road serial ports, four road 2M output is an example, and factory's station end performing step is described:
As shown in Figure 5, factory's station end mainly is made up of E1 interface module, HDLC processing module, serial interface module and CPU control module, finishes the mutual conversion of E1 channel data and serial data.
1. factory station termination is received the signal on the E1 circuit, and the E1 interface module converts line signal to serial data bit stream ST-BUS signal;
2.ST-BUS signal passes to the HDLC framer, removes frame format and verification, proper messages is delivered the CPU control module handle;
Become the serial ports control command 3.CPU the message of receiving is removed protocol headers, deliver to serial line interface configuration serial ports parameter;
4. simultaneously, RTU serial remote action data is delivered to the CPU control module by serial interface module and is carried out data buffering;
5.CPU remote action data is passed to HDLC processing module framing and adds check digit;
6. the data conversion after the framing becomes serial code stream ST-BUS signal;
7. at last the ST-BUS signal is carried out the HDB3 code conversion of E1 interface, be multiplexed into the E1 passage.
To have 16 road E1 input, the central station of a road network network interface is an example, and performing step is described:
As shown in Figure 6, central station multiple connection equipment mainly is made up of E1 interface module, serial data processing module and CPU control module, finishes the mutual conversion of E1 channel data and ethernet format packet, and equipment can be supported 16 road E1 interfaces.
1. at the E1 receive direction, central station is converted to serial ST-BUS data code flow with the E1 data flow of the HDB3 sign indicating number type that receives through the E1 interface module;
2.ST-BUS data code flow is submitted to the serial data processing module, the serial data stream processing module is transferred to the CPU control module after the ST-BUS data flow is separated HDLC Frame and verification correctly;
3.CPU being Ethernet tcp port number certificate, the data conversion that control module will receive from the serial data processing module sends to software server,
4. the software server upper layer software (applications) receives the data of sending here from Ethernet tcp data port by the server driver;
5. at the E1 sending direction, the server upper layer software (applications) sends to the CPU control module by the server driver with the control command of TCP control port;
6.CPU control module transfers data to the corresponding HDLC link of serial data processing module according to the related port flag information in the Ethernet data that receives;
7. the serial data processing module is exported to the E1 interface module after the CPU forward data is formed the HDLC frame and added check digit;
8.E1 interface module is exported the HDLC frame format data that receive through HDB3 sign indicating number type conversion back.
Claims (6)
1. method for transmitting telecontrol data through particular channel, factory's station end is connected by designated lane with central station, finishes the correspondence mappings of serial ports to the Ethernet tcp port, it is characterized in that may further comprise the steps:
A, factory's station end are multiplexed to the E1 signal to rs 232 serial interface signal;
B, central station become ethernet signal to the E1 conversion of signals.
2. a kind of method for transmitting telecontrol data through particular channel according to claim 1 is characterized in that: the rs 232 serial interface signal described in the steps A is multiplexed to the E1 signal and comprises the steps:
A1, the remote action data of uploading by serial ports at first pass through the HDLC framing;
Remote action data behind A2, the framing is multiplexed in one road 2M passage;
The serial ports control command that A3,2M passage pass is down separated the HDLC frame earlier, removes to control serial ports then.
3. a kind of method for transmitting telecontrol data through particular channel according to claim 1 is characterized in that: the E1 conversion of signals described in the step B becomes ethernet signal to comprise the steps:
The remote action data of uploading in B1, the 2M passage is separated the HDLC frame;
B2, separate the tcp data port that remote action data behind the frame is mapped to Ethernet;
Remote action data on B3, the FPDP is with TCP mode and software server swap data;
The control command of control serial ports configuration parameter is organized the HDLC frame earlier in the TCP control port of B4, Ethernet, is multiplexed into then in the 2M passage.
4. according to claim 1,2 or 3 described a kind of method for transmitting telecontrol data through particular channel, it is characterized in that, one road rs 232 serial interface signal is by the transmission of one road 2M designated lane, and its remote action data is mapped to a data tcp port of Ethernet, and control command is mapped to a control of Ethernet tcp port.
5. a kind of method for transmitting telecontrol data through particular channel according to claim 1 is characterized in that, a central station can connect many factory's station equipments, and factory's station equipment can have a plurality of serial ports.
6. a kind of method for transmitting telecontrol data through particular channel according to claim 4 is characterized in that: described designated lane is meant the 2M passage of POWER SYSTEM SDH transmission network.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101816321A CN101599998A (en) | 2009-07-24 | 2009-07-24 | A kind of method for transmitting telecontrol data through particular channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101816321A CN101599998A (en) | 2009-07-24 | 2009-07-24 | A kind of method for transmitting telecontrol data through particular channel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545963A (en) * | 2012-01-05 | 2012-07-04 | 邢台供电公司 | Electric power communication system utilizing SDH to remotely transmit Ethernet data |
| CN103941682A (en) * | 2014-04-03 | 2014-07-23 | 上海惠安***控制有限公司 | Simulation system used for replacing GE remote control device |
| CN104067570A (en) * | 2012-12-28 | 2014-09-24 | 华为技术有限公司 | Data transmission and control in power grid control system |
| CN104917725A (en) * | 2014-03-11 | 2015-09-16 | 上海卓岚信息科技有限公司 | Method and system for trans-NAT communication between serial server and network device |
| CN107347019A (en) * | 2017-04-20 | 2017-11-14 | 武汉迈力特通信有限公司 | The apparatus and method of MSTP system ethernet link failure fast transfers |
| CN109831266A (en) * | 2018-12-29 | 2019-05-31 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | The communication means of integrated communication equipment |
-
2009
- 2009-07-24 CN CNA2009101816321A patent/CN101599998A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545963A (en) * | 2012-01-05 | 2012-07-04 | 邢台供电公司 | Electric power communication system utilizing SDH to remotely transmit Ethernet data |
| CN104067570A (en) * | 2012-12-28 | 2014-09-24 | 华为技术有限公司 | Data transmission and control in power grid control system |
| CN104917725A (en) * | 2014-03-11 | 2015-09-16 | 上海卓岚信息科技有限公司 | Method and system for trans-NAT communication between serial server and network device |
| CN104917725B (en) * | 2014-03-11 | 2018-02-16 | 上海卓岚信息科技有限公司 | It is a kind of across NAT serial server and the communication means of the network equipment and system |
| CN103941682A (en) * | 2014-04-03 | 2014-07-23 | 上海惠安***控制有限公司 | Simulation system used for replacing GE remote control device |
| CN103941682B (en) * | 2014-04-03 | 2016-06-22 | 上海惠安***控制有限公司 | A kind of analog systems for replacing GE remote control device |
| CN107347019A (en) * | 2017-04-20 | 2017-11-14 | 武汉迈力特通信有限公司 | The apparatus and method of MSTP system ethernet link failure fast transfers |
| CN109831266A (en) * | 2018-12-29 | 2019-05-31 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | The communication means of integrated communication equipment |
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Application publication date: 20091209 |