CN204334305U - A kind of converter valve level control device for flexible AC transmission - Google Patents
A kind of converter valve level control device for flexible AC transmission Download PDFInfo
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- CN204334305U CN204334305U CN201420702248.8U CN201420702248U CN204334305U CN 204334305 U CN204334305 U CN 204334305U CN 201420702248 U CN201420702248 U CN 201420702248U CN 204334305 U CN204334305 U CN 204334305U
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Abstract
The utility model relates to a kind of converter valve level control device for flexible AC transmission, and described device comprises EtherCAT master station module A, EtherCAT master station module B, converter valve gathers main control module A, converter valve gathers main control module B, converter valve interface module, EtherCAT bus A, EtherCAT bus B and converter valve interface module.The utility model device adopts modular design, and the different module of different functions realizes, and can combine, have stronger flexibility according to the module choosing right quantity that needs of Practical Project.The utility model device can connect at most 65535 slave stations, and can realize synchronous between each slave station, multi-multipoint full-duplex communication can be realized, be easy to realize cascade between cabinet and signal synchronous, each slave station is without the need to additionally increasing synchronizing signal, simplify system, add system reliability.
Description
Technical field
The utility model relates to a kind of converter valve level control device, specifically relates to a kind of converter valve level control device for flexible AC transmission.
Background technology
The electric pressure of flexible AC transmission equipment is general higher; limit by current turn-off device withstand voltage level; the converter valve of flexible AC transmission equipment needs to be connected by multiple submodule; this has higher requirement to the Control protection of converter valve; the Control protection system of flexible AC transmission equipment needs the state information such as voltage, electric current of collecting each submodule in each control cycle; and according to the control command that upper level sends, the switching behaviour of all sub-series modules is controlled.Because module number is large, if all modules all communicate with master control protection system, data volume is too large, too high to communication bandwidth requirement.Existing converter valve level control device intercommunication technology mainly adopts carries out direct signal transmission based on the direct-connected line of LVDS difference, point-to-point Signal transmissions can only be realized, because converter valve quantity is large, so just need to expand a large amount of IO, and to realize synchronous between IO, need a large amount of connections, add unreliability, and when multiple chassis expansion, be difficult to realize synchronous and cascade.
Utility model content
For the deficiencies in the prior art; the utility model proposes a kind of converter valve level control device for flexible AC transmission; as the Intermediate Control Layer between master control protection system and converter valve; be responsible for carrying out data communication with a large amount of converter valve submodule; achieve the distribution of converter valve Control protection information and gather; and achieve the Control protection algorithm of converter valve level and the generation of converter valve submodule control impuls, alleviate communication and the computation burden of master control protection system.
The purpose of this utility model adopts following technical proposals to realize:
A kind of converter valve level control device for flexible AC transmission, its improvements are, described device comprises EtherCAT master station module A, EtherCAT master station module B, converter valve gathers main control module A, converter valve gathers main control module B, converter valve interface module, EtherCAT bus A, EtherCAT bus B and converter valve interface module;
Described converter valve level control device connects master control protection system and submodule drive plate;
Described converter valve level control device adopts the redundancy communication bus combined based on two EtherCAT and two HDLC, and device inside adopts two EtherCAT master station module and two converter valve to gather main control module;
Described EtherCAT bus A connects EtherCAT master station module A, converter valve gathers main control module A and converter valve interface module;
Described EtherCAT bus B connects EtherCAT master station module B, converter valve gathers main control module B and converter valve interface module;
Described converter valve interface module is connected with EtherCAT bus A and EtherCAT bus B, converter valve interface module gathers the control information of main control module A by EtherCAT bus A reception converter valve, the control information of main control module B is gathered by EtherCAT bus B reception converter valve, send the state information of submodule to converter valve by EtherCAT bus A and gather main control module A, send converter valve to by EtherCAT bus B and gather main control module B.
Preferably, described converter valve level control device can connect 65535 slave stations, adopts multi-multipoint full-duplex communication.
Preferably, described converter valve level control device is connected with master control protection system A by control optical fiber A, monitoring optical fiber A, controls optical fiber A and adopts HDLC agreement, monitoring optical fiber A employing Ethernet protocol.
Preferably, described converter valve level control device is connected with master control protection system B by control optical fiber B, monitoring optical fiber B, master control protection system A and master control protection system B redundancy backup each other.
Preferably, described converter valve level control device is connected with each converter valve submodule by optical fiber, totally two optical fiber, one one receipts, communications protocol adopts serial synchronous full duplex communication, physical layer adopts Manchester's code, and an optical fiber controls submodule input, locking, bypass and provides synchronizing signal; Optical fiber return capacitance voltage, module status, circuit breaker position and a thyristor valve state.
Preferably, described EtherCAT master station module comprises DSP control module, host computer interface module, CPLD control module, MAC control module, I/O module, EtherCAT slave station interface module;
Described host computer interface module connects host computer, and CPLD control module and I/O module are for receiving process synchronizing signal, and described DSP control module, MAC control module, EtherCAT slave station interface module are connected successively with EtherCAT bus.
Preferably, described converter valve gathers main control module and comprises DSP control module, FPGA control module, fiber optic Ethernet interface module, I/O module, light light inlet outgoing interface module and EtherCAT slave station interface module;
Described fiber optic Ethernet interface module is used for the connection between DSP control module and monitoring optical fiber, by monitoring optical fiber, submodule state information is uploaded to supervisory control system;
Described I/O module is that converter valve gathers main control module A and converter valve gathers exchanges data and the mutual passage monitored between main control module B.
Preferably, described converter valve interface module comprises FPGA control module, EtherCAT slave station interface module A, EtherCAT slave station interface module B and 8 fiber interface module;
Described fiber interface module is the communication interface between converter valve submodule, the sense channel of 1 corresponding converter valve submodule of fiber interface module and control channel, each converter valve interface module there are 8 fiber interface modules, serial communication can be carried out with 8 converter valve submodules simultaneously;
Described EtherCAT slave station interface module A is connected with the interface of EtherCAT bus A, and EtherCAT slave station interface module B is connected with the interface of EtherCAT bus B.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model device adopts modular design, and the different module of different functions realizes, and can combine, have stronger flexibility according to the module choosing right quantity that needs of Practical Project.
The utility model device inside adopts the real-time bus communication technology based on EtherCAT, EtherCAT is a kind of real-time industrial ethernet bus, this kind of bus communication speed is high, reaches as high as 1000Mbps, meets the requirement of the large and real-time of the converter valve amount of communication data of flexible AC transmission.
The utility model device inside adopts the real-time bus communication technology based on EtherCAT, 65535 slave stations can be connected at most, and can realize synchronous between each slave station, multi-multipoint full-duplex communication can be realized, be easy to realize cascade between cabinet and signal synchronous, the real-time bus of EtherCAT carries synchronizing function, and each slave station is without the need to additionally increasing synchronizing signal, simplify system, add system reliability.
The utility model device adopts Redundancy Design, have employed the redundancy communication bus combined based on two EtherCAT and two HDLC, device inside adopts two EtherCAT master station module and two converter valve to gather main control module, form by A system, the redundancy control system of B system composition, wherein after a system malfunctions, another system worked well still can maintain system and normally run, effectively raise the reliability of converter valve level control system, ensure that the stable operation of flexible AC transmission converter valve, the Redundancy Design of device guarantees that system can not be stopped transport because of the substance fault of arbitrary control system, the supervision that also can not lose converter valve because of substance fault.
Adopt between the utility model device and master control protection system based on optical fiber communication, optical fiber is not easily by electromagnetic interference, and reliability is high.Wherein control optical fiber and adopt HDLC agreement, meet the requirement of realtime control, monitoring optical fiber adopts Ethernet protocol, and can realize point-to-point communication, traffic rate is high, meets the requirement that monitor data amount is large.
Adopt the serial communication based on optical fiber between the utility model device and converter valve submodule, totally two optical fiber, one one receipts, an optical fiber controls submodule input, locking, bypass and provides synchronizing signal.Optical fiber return capacitance voltage, module status, circuit breaker position, a thyristor valve state.Adopt based on optical fiber communication, optical fiber is not easily by electromagnetic interference, and reliability is high.
Communications protocol adopts serial synchronous full duplex communication, and physical layer adopts Manchester's code, can realize point-to-point communication, real-time is good, the error rate is low, adopts serial communication to improve the utilance of communication channel, decreases the number of fibers between device and submodule.
Accompanying drawing explanation
A kind of converter valve level control device structure chart for flexible AC transmission that Fig. 1 provides for the utility model.
The EtherCAT master station module structural representation that Fig. 2 provides for the utility model.
Fig. 3 gathers main control module structural representation for the converter valve that the utility model provides.
The converter valve interface module structural representation that Fig. 4 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
The utility model provides a kind of converter valve level control device for flexible AC transmission; this device is the intermediate link connecting master control protection system and converter valve; primary responsibility is distributed to each converter valve submodule by after the Control protection information processing of master control protection system; and after the data summarization process of each converter valve submodule; return is to master control protection system; and achieve the Control protection algorithm of converter valve level and the generation of converter valve submodule control impuls, alleviate communication and the computation burden of master control protection system.
As shown in Figure 1, a kind of converter valve level control device for flexible AC transmission of the utility model, this device forms by with lower module: 1 EtherCAT master station module A, 1 EtherCAT master station module B, 1 converter valve gathers main control module A, 1 converter valve gathers main control module B, n converter valve interface module (n≤1), 1 EtherCAT bus A, 1 EtherCAT bus B.
EtherCAT bus A for connecting EtherCAT master station module A, converter valve gathers main control module A and n converter valve interface module.Converter valve gathers main control module A and carries out exchanges data by EtherCAT bus A and n converter valve interface module.The configuration management converter valve that is used for EtherCAT master station module A gathers the communication data message between main control module A and n converter valve interface module.
EtherCAT bus B for connecting EtherCAT master station module B, converter valve gathers main control module B and n converter valve interface module.Converter valve gathers main control module B and carries out exchanges data by EtherCAT bus B and n converter valve interface module.The configuration management converter valve that is used for EtherCAT master station module B gathers the communication data message between main control module B and n converter valve interface module.
Each converter valve interface module all has with EtherCAT bus A, EtherCAT bus B and is connected, converter valve interface module gathers the control information of main control module A by EtherCAT bus A reception converter valve, the control information of main control module B is gathered by EtherCAT bus B reception converter valve, and send the state information of submodule to converter valve by EtherCAT bus A simultaneously gather main control module A, send converter valve to by EtherCAT bus B and gather main control module B.Converter valve interface module performs order or the order of B system of A system according to the Active signal deciding that master control protection system is given.
Converter valve level control device is connected with master control protection system A by control optical fiber A, monitoring optical fiber A, wherein control optical fiber A and adopt HDLC agreement, meet the requirement of realtime control, the control information of primary recipient master control protection system A, such as bridge arm voltage reference value; Monitoring optical fiber A adopts Ethernet protocol, and can realize point-to-point communication, traffic rate is high, meets the requirement that monitor data amount is large.Monitoring optical fiber A is mainly used in transmitting submodule state information, delivers to supervisory control system display, facilitates system monitoring and accident analysis.
Converter valve level control device by controlling optical fiber B, monitoring optical fiber B is connected with master control protection system B, communication protocol and data information identical with A system, A system and B system redundancy backup each other.
Converter valve level control device is connected with each converter valve submodule by optical fiber, totally two optical fiber, one one receipts, communications protocol adopts serial synchronous full duplex communication, physical layer adopts Manchester's code, and an optical fiber controls submodule input, locking, bypass and provides synchronizing signal.Optical fiber return capacitance voltage, module status, circuit breaker position, a thyristor valve state.
Fig. 2 is EtherCAT master station module structural representation, and EtherCAT master station module is made up of following submodule: DSP control module, host computer interface module, CPLD control module, MAC control module, I/O module, EtherCAT slave station interface module.
EtherCAT master station module take DSP control module as core, and major function is managed for configuration the communication of EtherCAT bus, initiating communication message, and carry out analyzing and processing to the message returned.Host computer interface module, for connecting host computer, realizes Man Machine Interface, can carry out visual configuration to network.CPLD control module and I/O module, for receiving process synchronizing signal, can be used for adjusting the sequential that DSP sends message.MAC control module and EtherCAT slave station interface module are used for realizing the intermediary interface of DSP control module and EtherCAT bus.
Fig. 3 is that converter valve gathers main control module structural representation, and converter valve gathers main control module and is made up of following submodule: DSP control module, FPGA control module, fiber optic Ethernet interface module, I/O module, light light inlet outgoing interface module, EtherCAT slave station interface module.
Converter valve gathers main control module with DSP control module and FPGA control module as core, DSP control module runs circulation control algolithm according to the control information received and state information, bridge arm balance algorithm, capacitor voltage balance algorithm, analysis meter calculates the submodule needing switching, analysis result is handed down to each converter valve interface module, this module is also according to the state information of submodule return, carry out breakdown judge, and process accordingly according to fault level, and fault message is uploaded master control protection system, master control protection system makes corresponding judgement and action according to these information.
FPGA control module is mainly used in coordinating DSP control module to carry out communication data process; received by EtherCAT slave station interface module and send EtherCAT data; as communication data buffer memory; save the time of the reading process data of DSP control module; received the control information of master control protection system by light light inlet outgoing interface module, send the state information of converter valve submodule, dissection process is carried out to HDLC agreement; the data processed are put into buffer memory, waits for DSP control module process.
Submodule state information, for realizing the interface between DSP control module and monitoring optical fiber, is uploaded to supervisory control system by monitoring optical fiber by fiber optic Ethernet interface module.I/O module gathers for realizing converter valve the passage that main control module A and converter valve gather exchanges data between main control module B and mutually monitor.
Fig. 4 is converter valve interface module structural representation, and converter valve interface module is made up of following submodule: FPGA control module, EtherCAT slave station interface module A, EtherCAT slave station interface module B and 8 fiber interface module.
FPGA control module is the control core of converter valve interface module, fiber interface module is for realizing the communication interface between converter valve submodule, the sense channel of 1 corresponding converter valve submodule of fiber interface module and control channel, each converter valve interface module there are 8 fiber interface modules, serial communication can be carried out with 8 converter valve submodules simultaneously.EtherCAT slave station interface module A is for realizing the interface with EtherCAT bus A, and EtherCAT slave station interface module B is for realizing the interface with EtherCAT bus B.FPGA control module function mainly contains: the serial communication data between 1 pair of converter valve submodule carries out coding and decoding process, issues control command to converter valve submodule by serial communication, receives state information and the fault message of converter valve submodule simultaneously; 2 gather the control command of main control module A by EtherCAT bus A reception converter valve, receive converter valve by EtherCAT bus B and gather the control command of main control module B, and the state information of the converter valve submodule received and fault message are uploaded to converter valve gathers main control module A, converter valve gathers main control module B simultaneously by EtherCAT bus A, EtherCAT bus B; 3 carry out the switching of AB system according to the Active signal received.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify to embodiment of the present utility model or equivalent replacement, and not departing from any amendment of the utility model spirit and scope or equivalent replacement, it all should be encompassed in the middle of right of the present utility model.
Claims (8)
1. the converter valve level control device for flexible AC transmission, it is characterized in that, described device comprises EtherCAT master station module A, EtherCAT master station module B, converter valve gathers main control module A, converter valve gathers main control module B, converter valve interface module, EtherCAT bus A, EtherCAT bus B and converter valve interface module;
Described converter valve level control device connects master control protection system and submodule drive plate;
Described converter valve level control device adopts the redundancy communication bus combined based on two EtherCAT and two HDLC, and device inside adopts two EtherCAT master station module and two converter valve to gather main control module;
Described EtherCAT bus A connects EtherCAT master station module A, converter valve gathers main control module A and converter valve interface module;
Described EtherCAT bus B connects EtherCAT master station module B, converter valve gathers main control module B and converter valve interface module;
Described converter valve interface module is connected with EtherCAT bus A and EtherCAT bus B, converter valve interface module gathers the control information of main control module A by EtherCAT bus A reception converter valve, the control information of main control module B is gathered by EtherCAT bus B reception converter valve, send the state information of submodule to converter valve by EtherCAT bus A and gather main control module A, send converter valve to by EtherCAT bus B and gather main control module B.
2. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1, it is characterized in that, described converter valve level control device can connect 65535 slave stations, adopts multi-multipoint full-duplex communication.
3. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1; it is characterized in that; described converter valve level control device is connected with master control protection system A by control optical fiber A, monitoring optical fiber A; control optical fiber A and adopt HDLC agreement, monitoring optical fiber A adopts Ethernet protocol.
4. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1; it is characterized in that; described converter valve level control device is connected with master control protection system B by control optical fiber B, monitoring optical fiber B, master control protection system A and master control protection system B redundancy backup each other.
5. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1, it is characterized in that, described converter valve level control device is connected with each converter valve submodule by optical fiber, totally two optical fiber, one one receipts, communications protocol adopts serial synchronous full duplex communication, and physical layer adopts Manchester's code, and an optical fiber controls submodule input, locking, bypass and provides synchronizing signal; Optical fiber return capacitance voltage, module status, circuit breaker position and a thyristor valve state.
6. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1, it is characterized in that, described EtherCAT master station module comprises DSP control module, host computer interface module, CPLD control module, MAC control module, I/O module, EtherCAT slave station interface module;
Described host computer interface module connects host computer, and CPLD control module and I/O module are for receiving process synchronizing signal, and described DSP control module, MAC control module, EtherCAT slave station interface module are connected successively with EtherCAT bus.
7. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1, it is characterized in that, described converter valve gathers main control module and comprises DSP control module, FPGA control module, fiber optic Ethernet interface module, I/O module, light light inlet outgoing interface module and EtherCAT slave station interface module;
Described fiber optic Ethernet interface module is used for the connection between DSP control module and monitoring optical fiber, by monitoring optical fiber, submodule state information is uploaded to supervisory control system;
Described I/O module is that converter valve gathers main control module A and converter valve gathers exchanges data and the mutual passage monitored between main control module B.
8. a kind of converter valve level control device for flexible AC transmission as claimed in claim 1, it is characterized in that, described converter valve interface module comprises FPGA control module, EtherCAT slave station interface module A, EtherCAT slave station interface module B and 8 fiber interface module;
Described fiber interface module is the communication interface between converter valve submodule, the sense channel of 1 corresponding converter valve submodule of fiber interface module and control channel, each converter valve interface module there are 8 fiber interface modules, serial communication can be carried out with 8 converter valve submodules simultaneously;
Described EtherCAT slave station interface module A is connected with the interface of EtherCAT bus A, and EtherCAT slave station interface module B is connected with the interface of EtherCAT bus B.
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| CN201420702248.8U CN204334305U (en) | 2014-11-20 | 2014-11-20 | A kind of converter valve level control device for flexible AC transmission |
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| CN201420702248.8U CN204334305U (en) | 2014-11-20 | 2014-11-20 | A kind of converter valve level control device for flexible AC transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554012A (en) * | 2015-12-28 | 2016-05-04 | 天津瑞能电气有限公司 | Communication unit for converting EtherCAT slave station into Canopen master station on basis of DSP (Digital Signal Processor) |
| CN112187396A (en) * | 2019-07-05 | 2021-01-05 | 许继集团有限公司 | Communication system and method suitable for flexible direct current converter valve |
-
2014
- 2014-11-20 CN CN201420702248.8U patent/CN204334305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554012A (en) * | 2015-12-28 | 2016-05-04 | 天津瑞能电气有限公司 | Communication unit for converting EtherCAT slave station into Canopen master station on basis of DSP (Digital Signal Processor) |
| CN112187396A (en) * | 2019-07-05 | 2021-01-05 | 许继集团有限公司 | Communication system and method suitable for flexible direct current converter valve |
| CN112187396B (en) * | 2019-07-05 | 2022-10-25 | 许继集团有限公司 | Communication system and method suitable for flexible direct current converter valve |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: STATE GRID SMART GRID Research Institute Patentee before: State Grid Corporation of China |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170502 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Patentee after: State Grid Corporation of China Co-patentee after: STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right |