CN110890920A - High-voltage chain type SVG (static var generator) -based hybrid ring network communication model - Google Patents
High-voltage chain type SVG (static var generator) -based hybrid ring network communication model Download PDFInfo
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Abstract
The invention belongs to the technical field of communication, in particular to a high-voltage chain type SVG hybrid ring network communication model, and provides a scheme which comprises a high-voltage chain type SVG control system, a power system and a high-voltage chain type SVG main circuit connected with the high-voltage chain type SVG control system and the power system, wherein the high-voltage chain type SVG control system comprises an optical fiber communication module, a data transmission module and a main controller, the power system and the optical fiber communication module are sequentially connected, and the high-voltage chain type SVG main circuit is respectively connected with the main controller and the power system; the method for building the communication model based on the high-voltage chained SVG hybrid ring network is further included. The invention reduces the number of optical cables for communication, saves cost and does not reduce the timeliness of communication.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a high-voltage chained SVG (scalable vector graphics) hybrid ring network communication model.
Background
The high-voltage chained SVG main circuit is in high voltage and high current, and data exchange with a control system needs to be carried out through optical fibers. The purpose of using the optical fiber is to realize high-voltage isolation and ensure the personal safety of a user. The second purpose is to provide effective guarantee for data exchange between the control system and the power unit so that the control system is not interfered by the high-voltage main circuit.
Due to the large number of fiber optic signal transmission used, the cost of the fiber optic conversion and transmission portion is also a considerable proportion of the total equipment. For example, a set of 35kV direct-hanging SVG has 126 power units, and the traditional communication model needs 252 pairs of optical fiber converters and 252 optical fiber lines, so that the cost is high. The number of the optical fiber converters and the optical fibers is effectively reduced, so that the cost can be greatly reduced;
the communication is mainly carried out in a centralized and ring network type mode, a high-voltage chained SVG control system in the centralized communication needs to communicate with each power unit at the same time, the real-time performance is good, and the problem is high cost (the number of optical fiber converters and optical fiber lines is large); photoelectric converters and optical fiber lines between an SVG control system and power units in ring network type communication are greatly reduced, the requirement of the whole system can be met only by 3 pairs, the power units are placed together, the distance between adjacent modules is very short, the optical fiber distance is also very short, and the ring network type communication has cost advantages. Because the real-time exchanged data volume of the control system and the power unit in one PWM cycle is not changed, all communication data of the ring network type communication structure is realized by three pairs of optical fibers which are mainly controlled, a high-speed photoelectric converter is needed to realize the data throughput in one PWM cycle, the cost of the ring network structure is increased compared with that of a centralized low-speed photoelectric converter, but the cost of the ring network communication is more advantageous than that of the centralized communication in view of the total cost;
however, in actual use, the structure and the operation mode of each high-voltage chained SVG main circuit are different, the existing centralized type and ring network type are difficult to realize communication, and therefore a high-voltage chained SVG hybrid ring network communication model is needed.
Disclosure of Invention
The invention provides a high-voltage chained SVG (scalable vector graphics) based hybrid ring network communication model, which solves the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a based on mixed looped netowrk communication model of high pressure chain SVG, includes high pressure chain SVG control system, power system and the high pressure chain SVG main circuit of all being connected with high pressure chain SVG control system, power system, high pressure chain SVG control system includes optical fiber communication module, data transmission module and main control unit, and power system and optical fiber communication module, data transmission module and main control unit connect gradually, and high pressure chain SVG main circuit is connected with main control unit and power system respectively, power system includes A looks power component, B looks power component and C looks power component, and A looks power component is including the A looks power module of arranging in proper order, and A looks power module is including the A looks power unit that connects gradually, and the foremost of A looks power module and rearmost end A looks power unit all are connected with optical fiber communication module.
Preferably, the B-phase power assembly and the C-phase power assembly are consistent with the A-phase power assembly in structure, the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are arranged in parallel, and the number of the A-phase power modules is consistent with that of the B-phase power modules and that of the C-phase power modules.
Preferably, the number of the a-phase power modules is equal to the number of the adjacent B-phase power modules and C-phase power modules, the number of the a-phase power units in the a-phase power modules is equal to the number of the adjacent B-phase power units in the B-phase power modules and the number of the adjacent C-phase power units in the C-phase power modules, and the number of the a-phase power units in the a-phase power modules is 2-10.
Preferably, power units in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are connected with the high-voltage chained SVG main circuit.
A method for building a communication model based on a high-voltage chained SVG hybrid ring network is characterized by comprising the following steps:
s1 model assembly
According to the actual circuit structure of a high-voltage chained SVG main circuit controlled by a high-voltage chained SVG control system, the power system is connected with the actual circuit structure of the high-voltage chained SVG main circuit, the number of power units in the power system is consistent according to the number of the current high-voltage chained SVG main circuit, power modules are grouped according to the communication frequency of the current adjacent high-voltage chained SVG main circuit, a proper number of power units are selected to form an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, the power modules are selected according to the communication evaluation rate in unit time when being selected, when the communication frequencies of the adjacent power modules are lower, the power modules with a large number are selected to be used as the A-phase power assembly, the B-phase power assembly and the C-phase power assembly, when the communication frequencies of the adjacent power modules are higher, the power modules with a small number are selected to be used as the A-phase, then power units in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are sequentially connected, the front ends and the rear ends of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are all connected with the optical fiber communication module, and meanwhile, power modules in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are connected with the high-voltage chained SVG main circuit;
s2 model configuration
The method comprises the following steps that a high-voltage chained SVG main circuit and a main controller start to be powered on, the main controller firstly enters a configuration stage of power units of an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, and automatic distribution is carried out according to the number of the power units configured by hardware of the whole SVG device and the number of groups of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly during configuration, so that the number of the power units managed by the last group of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly is random;
model S3 establishment connection
The method comprises the steps that a high-voltage chained SVG control system sequentially sends establishment commands to an A-phase power assembly, a B-phase power assembly and a C-phase power assembly in an installation sequence, a main controller in the high-voltage chained SVG control system sends connection establishment commands to a first power unit of each of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly when sending the establishment commands, the first power unit sends the connection establishment commands to a next power unit after receiving the commands, the last power unit returns the connection establishment commands to the main controller after receiving the establishment commands, and the main controller indicates that the power units in the group are all established with connection after receiving a return command of the last power unit, and communication links are communicated;
s4 model parameter configuration
The main controller sends a configuration parameter command to the foremost power unit in each A-phase power assembly, each B-phase power assembly and each C-phase power assembly, the command is used as a common command, after the foremost power unit receives the command, the command is directly transmitted to the next power unit without logic judgment, and then the command is sequentially transmitted to the last power unit according to the mode, and meanwhile, when data are returned, the data are sequentially returned according to the positions of the current power unit modules in the group;
s4 model operation
When the main controller completes parameter configuration on the power unit, the operation stage is entered, the main controller is utilized to realize issuing startup, shutdown, reset, reading direct current side voltage, reading fault state, carrier wave zero clearing and issuing modulation wave commands, and issuing according to set time sequence logic, thereby completing data connection control between the main controller and the power unit.
In the present invention,
the communication model is designed to integrate the advantages of a centralized type and a ring network type to form a new hybrid ring network structure model, so that the number of optical cables for communication can be reduced, the cost is saved, and the timeliness of communication is not reduced.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage chained SVG hybrid ring network communication model according to the present invention;
fig. 2 is a schematic structural diagram of a high-voltage chained SVG hybrid ring network communication model-based power system according to the present invention;
fig. 3 is a schematic structural diagram of an a-phase power component based on a high-voltage chained SVG hybrid ring network communication model according to the present invention;
fig. 4 is a schematic structural diagram of a B-phase power component based on a high-voltage chained SVG hybrid ring network communication model according to the present invention;
fig. 5 is a schematic structural diagram of a C-phase power component based on a high-voltage chained SVG hybrid ring network communication model according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a based on high-voltage chain type SVG hybrid ring network communication model, including high-voltage chain type SVG control system, power system and with high-voltage chain type SVG control system, the high-voltage chain type SVG main circuit that power system all is connected, high-voltage chain type SVG control system includes optical fiber communication module, data transmission module and main control unit, power system and optical fiber communication module, data transmission module and main control unit connect gradually, high-voltage chain type SVG main circuit is connected with main control unit and power system respectively, power system includes a phase power subassembly, B phase power subassembly and C phase power subassembly, A phase power subassembly includes the A phase power module of arranging in proper order, A phase power module includes the A phase power unit that connects gradually, the foremost and rearmost end A phase power unit of A phase power module all are connected with optical fiber communication module.
Furthermore, the B-phase power assembly and the C-phase power assembly are consistent with the A-phase power assembly in structure, the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are arranged in parallel, and the number of the A-phase power modules is consistent with that of the B-phase power modules and that of the C-phase power modules.
Particularly, the number of the A-phase power modules is consistent with the number of the adjacent B-phase power modules and C-phase power modules, the number of the A-phase power units in the A-phase power modules is consistent with the number of the B-phase power units in the adjacent B-phase power modules and the number of the C-phase power units in the C-phase power modules, and the number of the A-phase power units in the A-phase power modules is 2-10.
It is worth to be noted that power units in the phase-A power component, the phase-B power component and the phase-C power component are connected with the high-voltage chained SVG main circuit.
A method for building a communication model based on a high-voltage chained SVG hybrid ring network comprises the following steps:
s1 model assembly
According to the actual circuit structure of a high-voltage chained SVG main circuit controlled by a high-voltage chained SVG control system, the power system is connected with the actual circuit structure of the high-voltage chained SVG main circuit, the number of power units in the power system is consistent according to the number of the current high-voltage chained SVG main circuit, power modules are grouped according to the communication frequency of the current adjacent high-voltage chained SVG main circuit, a proper number of power units are selected to form an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, the power modules are selected according to the communication evaluation rate in unit time when being selected, when the communication frequencies of the adjacent power modules are lower, the power modules with a large number are selected to be used as the A-phase power assembly, the B-phase power assembly and the C-phase power assembly, when the communication frequencies of the adjacent power modules are higher, the power modules with a small number are selected to be used as the A-phase, then power units in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are sequentially connected, the front ends and the rear ends of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are all connected with the optical fiber communication module, and meanwhile, power modules in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are connected with the high-voltage chained SVG main circuit;
s2 model configuration
The method comprises the following steps that a high-voltage chained SVG main circuit and a main controller start to be powered on, the main controller firstly enters a configuration stage of power units of an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, and automatic distribution is carried out according to the number of the power units configured by hardware of the whole SVG device and the number of groups of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly during configuration, so that the number of the power units managed by the last group of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly is random;
model S3 establishment connection
The method comprises the steps that a high-voltage chained SVG control system sequentially sends establishment commands to an A-phase power assembly, a B-phase power assembly and a C-phase power assembly in an installation sequence, a main controller in the high-voltage chained SVG control system sends connection establishment commands to a first power unit of each of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly when sending the establishment commands, the first power unit sends the connection establishment commands to a next power unit after receiving the commands, the last power unit returns the connection establishment commands to the main controller after receiving the establishment commands, and the main controller indicates that the power units in the group are all established with connection after receiving a return command of the last power unit, and communication links are communicated;
s4 model parameter configuration
The main controller sends a configuration parameter command to the foremost power unit in each A-phase power assembly, B-phase power assembly and C-phase power assembly, the command is used as a common command, after the foremost power unit receives the command, the command is directly transmitted to the next power unit without logic judgment, and then the command is sequentially transmitted to the last power unit according to the mode, so that the processing benefit is that the communication efficiency is improved, and meanwhile, when data are returned, the data are sequentially returned according to the positions of the current power unit modules in the group;
s4 model operation
When the main controller completes parameter configuration on the power unit, the operation stage is entered, the main controller is utilized to realize issuing startup, shutdown, reset, reading direct current side voltage, reading fault state, carrier wave zero clearing and issuing modulation wave commands, and issuing according to set time sequence logic, thereby completing data connection control between the main controller and the power unit.
In conclusion, the design integrates the advantages of a centralized communication model and a ring network to form a new hybrid ring network structure model, so that the number of optical cables for communication can be reduced, the cost is saved, and the timeliness of communication is not reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a based on mixed looped netowrk communication model of high pressure chain SVG, includes high pressure chain SVG control system, power system and all connects high pressure chain SVG main circuit with high pressure chain SVG control system, power system, high pressure chain SVG control system includes optical fiber communication module, data transmission module and main control unit, power system and optical fiber communication module, and data transmission module and main control unit connect gradually, and high pressure chain SVG main circuit is connected with main control unit and power system respectively, power system includes A looks power module, B looks power module and C looks power module, and A looks power module is including the A looks power module of arranging in proper order, and A looks power module is including the A looks power unit that connects gradually, and the foremost and rearmost end A looks power unit of A looks power module all are connected with optical fiber communication module.
2. The high-voltage chained SVG hybrid ring network communication model according to claim 1, characterized in that said B-phase power module and C-phase power module are identical in structure to A-phase power module, said A-phase power module, B-phase power module and C-phase power module are arranged in parallel, and the number of A-phase power module is identical to the number of B-phase power module and C-phase power module.
3. The high-voltage chained SVG hybrid ring network communication model according to claim 1, characterized in that, the number of said A phase power modules is the same as the number of adjacent B phase power modules and C phase power modules, the number of A phase power units inside A phase power module is the same as the number of adjacent B phase power units inside B phase power module and the number of C phase power units inside C phase power module, and the number of A phase power units inside A phase power module is 2-10.
4. The high-voltage chained SVG-based hybrid looped network communication model of claim 1, characterized in that the power units inside said A-phase, B-phase and C-phase power components are connected with the high-voltage chained SVG main circuit.
5. A method for building a communication model based on a high-voltage chained SVG hybrid ring network is characterized by comprising the following steps:
s1 model assembly
The method comprises the steps that power modules are grouped according to the communication frequency of the current adjacent high-voltage chained SVG main circuit, a proper number of power units are selected to form an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, then the power units in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are sequentially connected, the front ends and the rear ends of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are all connected with an optical fiber communication module, and meanwhile, the power modules in the A-phase power assembly, the B-phase power assembly and the C-phase power assembly are connected with the high-voltage chained SVG main circuit;
s2 model configuration
The method comprises the following steps that a high-voltage chained SVG main circuit and a main controller start to be powered on, the main controller firstly enters a configuration stage of power units of an A-phase power assembly, a B-phase power assembly and a C-phase power assembly, and automatic distribution is carried out according to the number of the power units configured by hardware of the whole SVG device and the number of groups of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly during configuration, so that the number of the power units managed by the last group of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly is random;
model S3 establishment connection
The method comprises the steps that a high-voltage chained SVG control system sequentially sends establishment commands to an A-phase power assembly, a B-phase power assembly and a C-phase power assembly in an installation sequence, a main controller in the high-voltage chained SVG control system sends connection establishment commands to a first power unit of each of the A-phase power assembly, the B-phase power assembly and the C-phase power assembly when sending the establishment commands, the first power unit sends the connection establishment commands to a next power unit after receiving the commands, the last power unit returns the connection establishment commands to the main controller after receiving the establishment commands, and the main controller indicates that the power units in the group are all established with connection after receiving a return command of the last power unit, and communication links are communicated;
s4 model parameter configuration
The main controller sends a configuration parameter command to the foremost power unit in each A-phase power assembly, each B-phase power assembly and each C-phase power assembly, the command is used as a common command, after the foremost power unit receives the command, the command is directly transmitted to the next power unit without logic judgment, and then the command is sequentially transmitted to the last power unit according to the mode, and meanwhile, when data are returned, the data are sequentially returned according to the positions of the current power unit modules in the group;
s4 model operation
When the main controller completes parameter configuration on the power unit, the operation stage is entered, the main controller is utilized to realize issuing startup, shutdown, reset, reading direct current side voltage, reading fault state, carrier wave zero clearing and issuing modulation wave commands, and issuing according to set time sequence logic, thereby completing data connection control between the main controller and the power unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113364023A (en) * | 2021-06-25 | 2021-09-07 | 西安西电电力系统有限公司 | Redundant ring network communication system and method for flexible direct current transmission converter valve |
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Application publication date: 20200317 |