CN109586405B - Micro-grid system and communication method thereof - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The invention provides a micro-grid system and a communication method thereof, wherein the system comprises: a bus; the wireless communication module is connected to the bus and used for forming a wireless network; and the power grid equipment is connected with the bus and can be connected to a wireless network formed by the wireless communication module. By the scheme, the technical problem that data transmission efficiency is low when data transmission is carried out only through a bus in the prior art is solved, and the technical effect of effectively improving the transmission efficiency is achieved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to a micro-grid system and a communication method thereof.
Background
In a micro-grid system, as shown in fig. 1, most communication topologies are bus topologies, all communication devices are in the same communication collision domain, and when one or several communication lines in a bus are short-circuited or broken, the communication of the whole communication network is interrupted or broken, so that the reliability of the communication is not high.
In addition, when the number of communication devices in the bus is increased, the control time of the response terminal of the electric equipment is also increased, and the real-time performance of communication is poor.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a micro-grid system and a communication method thereof, which aim to achieve the technical effect of improving the communication quality of nodes on a communication line.
In one aspect, a microgrid system is provided, comprising:
a bus;
the wireless communication module is connected to the bus and used for forming a wireless network;
and the power grid equipment is connected with the bus and can be connected to a wireless network formed by the wireless communication module.
In one embodiment, the grid device comprises at least one of: energy controller, converter, energy storage cabinet, consumer.
In one embodiment, the system further comprises: and the interactive terminal is connected with an external network.
In one embodiment, the wireless communication module is provided with: and the switch unit is used for controlling the switch of the wireless communication module.
In another aspect, a method for communication based on the above microgrid system is provided, including:
the power grid equipment detects the data transmission speed of the bus and the data transmission speed of the connectable wireless network;
selecting a communication network with high data transmission speed as a communication network for data transmission;
data transmission is performed based on the selected communication network.
In one embodiment, the data transmission process based on the selected communication network comprises the following steps:
the power grid equipment receives data and detects whether the data transmission speed of the selected communication network reaches a preset speed threshold value;
evaluating the selected communication network if it is determined that a preset speed threshold is not reached;
continuing data transmission through the selected communication network in the case of a passing of the evaluation;
in case the evaluation fails, the communication network is reselected.
In one embodiment, evaluating the selected communication network comprises:
detecting whether the data transmission speed does not reach a preset speed threshold value within a preset time;
if none, determining that the evaluation fails;
and if the data transmission speed is increased to the preset speed threshold value within the preset time, determining that the evaluation is passed.
In one embodiment, the data transmission process based on the selected communication network comprises the following steps:
the interactive terminal detects the proportion of the number of received data frames and the number of error frames in a preset time period;
when the occupied proportion is within a preset range, carrying out data transmission through the selected communication network;
and when the occupied proportion exceeds a preset range, the interactive terminal controls the unused wireless communication module to be in an open state so as to increase the wireless communication network.
In yet another aspect, a network device is provided, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a further aspect, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method.
In the above embodiment, a micro-grid system provided with a wireless communication module is provided, so that a grid device can detect the data transmission speed of a bus and the data transmission speed of a connectable wireless network, and select a communication network with a high data transmission speed for data transmission. By the scheme, the technical problem that data transmission efficiency is low when data transmission is carried out only through a bus in the prior art is solved, and the technical effect of effectively improving the transmission efficiency is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a network communication architecture diagram of a prior art microgrid system;
FIG. 2 is a schematic rack diagram of a microgrid system according to an embodiment of the present invention;
FIG. 3 is a flow chart of a communication method according to an embodiment of the present invention;
fig. 4 is a piconet network communication architecture according to an embodiment of the invention;
fig. 5 is a block diagram of a wireless communication module according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating an example of a piconet device selecting communication network according to an embodiment of the present invention;
fig. 7 is a block diagram of a communication apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Aiming at the problems of low communication reliability, poor real-time performance and low communication quality of the existing communication topology, in the embodiment, a communication technology with higher communication performance and a more reliable communication topology are provided to form a micro-grid system, so that the aims of high reliability, high real-time performance and high communication quality are fulfilled.
As shown in fig. 2, there is provided in this example a microgrid system comprising:
a bus 201;
a wireless communication module 202 connected to the bus 201 for forming a wireless network;
and the power grid equipment 203 is connected with the bus 201 and can be connected to a wireless network formed by the wireless communication module 202.
In the above example, a micro-grid system provided with a wireless communication module is provided, so that a grid device can detect the data transmission speed of a bus and the data transmission speed of a connectable wireless network, and a communication network with a high data transmission speed is selected for data transmission. By the scheme, the technical problem that data transmission efficiency is low when data transmission is carried out only through a bus in the prior art is solved, and the technical effect of effectively improving the transmission efficiency is achieved.
The aforementioned power grid devices may include, but are not limited to, at least one of the following: energy controller, converter, energy storage cabinet, consumer.
The micro-grid system can further comprise an interactive terminal connected with an external network.
In order to realize the vacancy of the wireless communication module, the wireless communication module may be provided with: and the switch unit is used for controlling the switch of the wireless communication module.
Based on the microgrid system shown in fig. 2, a communication method is provided in this example, as shown in fig. 3, which may include the following steps:
step 301: the power grid equipment detects the data transmission speed of the bus and the data transmission speed of the connectable wireless network;
step 302: selecting a communication network with high data transmission speed as a communication network for data transmission;
step 303: data transmission is performed based on the selected communication network.
Considering that the selection of the communication network directly affects the communication efficiency in the actual communication process, the network with high data transmission speed is selected to accelerate the data transmission, but the transmission speed is not constant for each network, so the detection can be carried out in real time. Therefore, in the process of data transmission based on the selected communication network, the following steps may be included:
s1: the power grid equipment receives the data and detects whether the data transmission speed of the selected communication network reaches a preset speed threshold value or not;
s2: evaluating the selected communication network if it is determined that a preset speed threshold is not reached;
s3: continuing data transmission through the selected communication network in the case of a passing of the evaluation;
s4: in case the evaluation fails, the communication network is reselected.
Specifically, in the implementation process, the evaluating the selected communication network may include: detecting whether the data transmission speed does not reach a preset speed threshold value within a preset time; if none, determining that the evaluation fails; and if the data transmission speed is increased to the preset speed threshold value within the preset time, determining that the evaluation is passed.
It is considered that some networks sometimes have a relatively high error rate in data transmitted by the data transmission, and thus the networks cannot be used. Therefore, in the implementation process, in the process of data transmission based on the selected communication network, the interactive terminal can detect the proportion of the number of received data frames and the number of error frames in a preset time period; when the occupied proportion is within a preset range, carrying out data transmission through the selected communication network; and when the occupied proportion exceeds a preset range, the interactive terminal controls the unused wireless communication module to be in an open state so as to increase the wireless communication network.
The foregoing micro-grid system and the communication method thereof are described below with reference to an embodiment, however, it should be noted that the embodiment is only for better describing the present application and is not to be construed as a limitation to the present application.
In this example, a piconet system is provided in which devices have the capability of communicating wirelessly and being able to detect the speed of network communications.
1) Networking mode:
as shown in fig. 4, each device in the piconet system is a device with wireless communication capability, and each device and the wireless communication module in the piconet system are connected together in a bus-type topology through a communication bus to form a first-layer communication network. In this example, three wireless modules are arranged as an example, and the number of the actually arranged wireless modules may be determined according to the distribution of the devices in the microgrid system, which is not limited in the present application.
When the wireless communication module is not needed, as shown in fig. 5, the wireless communication is turned off by the switch unit on the wireless module, and the wireless module forms three independent sub-networks by propagating the wireless signal network: LAN1, LAN2, and LAN3, which form the second layer of the communication network in the piconet system.
In this example, at least one of the interactive terminal and the wireless module in the piconet system may be connected to an external network to serve as an interface channel for connecting the piconet system to the external network, and an interface for implementing expansion of subsequent piconet system applications and upgrading of device application programs is reserved.
2) Communication:
the equipment with the wireless communication function in the microgrid system can be wirelessly connected with the wireless communication modules, can detect the communication quality of a network formed by each wireless communication module, and then selects a communication network and a communication medium according to the communication quality of the network for communication. As shown in fig. 4, the microgrid device has a wireless communication function, and it can be known from the topology of fig. 4 that the microgrid device can receive a control data frame of an interactive terminal device through two ways, namely, a bus and a wireless communication, and specifically, as shown in fig. 6, the method includes the following steps:
s1: the communication quality of the network (bus and wireless network) to which the device can connect is detected, the communication quality is divided according to the transmission speed of the communication, and the network with high data transmission speed is selected to perform communication connection and transmit the communication data.
S2: the communication speed is detected, and when the communication speed is lower than a preset data transmission speed (for example: 256kbit/s), an evaluation mechanism of the network quality can be started.
S3: the micro-grid equipment enters an evaluation mechanism: if the data transmission speed received by the microgrid device in 35 seconds is below 256kbit/S, the evaluation fails, step S1 is repeated, and when the data transmission speed reaches 256kbit/S or above in the time period, the network is continuously used for data transmission control.
S4: when an interactive terminal in the microgrid system detects the number of received data frames and the number of error frames within a certain time period (for example, 2 minutes) through a background program of the interactive terminal, and when the proportion of the error frames received by the microgrid device to the total number of data frames is within an acceptable range (which can be set autonomously according to the environment of a communication site), the evaluation is determined to be passed, and the communication connection of the original network is maintained. And when the proportion of the error frames to the total data frames is not in the acceptance range, the interactive terminal sends a control command to send an opening instruction to the unused wireless communication module in the bus, the communication channels of the equipment are increased, and the steps are repeated, so that the optimal microgrid system network communication scheme is selected.
In the above example, a method for detecting a network topology and communication network quality in a multi-device microgrid system is provided, by which the communication topology of the existing microgrid system can be changed, the real-time performance of the microgrid system and the reliability of network communication are improved, and development of remotely updating device control application programs and expanding system applications becomes possible.
Based on the same inventive concept, the embodiment of the present invention further provides a communication apparatus, as described in the following embodiments. Since the principle of the communication apparatus for solving the problem is similar to that of the communication method, the implementation of the communication apparatus can be referred to the implementation of the communication method, and repeated descriptions are omitted. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 7 is a block diagram of a communication apparatus according to an embodiment of the present invention, which is located in a power grid device, and as shown in fig. 7, the communication apparatus may include: a detection module 701, a selection module 702, and a transmission module 703, the structure of which will be described below.
A detection module 701 for detecting a data transmission speed of a bus and a data transmission speed of a connectable wireless network;
a selection module 702, configured to select a communication network with a high data transmission speed as a communication network for data transmission;
a transmission module 703 is configured to perform data transmission based on the selected communication network.
In one embodiment, the data transmission process based on the selected communication network comprises the following steps: the power grid equipment receives data and detects whether the data transmission speed of the selected communication network reaches a preset speed threshold value; evaluating the selected communication network if it is determined that a preset speed threshold is not reached; continuing data transmission through the selected communication network in the case of a passing of the evaluation; in case the evaluation fails, the communication network is reselected.
In one embodiment, evaluating the selected communication network comprises: detecting whether the data transmission speed does not reach a preset speed threshold value within a preset time; if none, determining that the evaluation fails; and if the data transmission speed is increased to the preset speed threshold value within the preset time, determining that the evaluation is passed.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: a micro-grid system provided with wireless communication modules is provided, so that grid equipment can detect the data transmission speed of a bus and the data transmission speed of a connectable wireless network, and a communication network with a high data transmission speed is selected for data transmission. By the scheme, the technical problem that data transmission efficiency is low when data transmission is carried out only through a bus in the prior art is solved, and the technical effect of effectively improving the transmission efficiency is achieved.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (5)
1. A method of communicating in a microgrid system, the microgrid system comprising: a bus; the wireless communication module is connected to the bus and used for forming a wireless network; the power grid equipment is connected with the bus and can be connected to a wireless network formed by the wireless communication module; the method comprises the following steps:
the power grid equipment detects the data transmission speed of the bus and the data transmission speed of the connectable wireless network;
selecting a communication network with high data transmission speed as a communication network for data transmission;
performing data transmission based on the selected communication network;
in the process of data transmission based on the selected communication network, the method comprises the following steps:
the power grid equipment receives data and detects whether the data transmission speed of the selected communication network reaches a preset speed threshold value;
in the event that it is determined that the preset speed threshold is not reached, evaluating the selected communication network, including:
detecting whether the data transmission speed does not reach a preset speed threshold value within a preset time;
if none, determining that the evaluation fails;
and if the data transmission speed is increased to the preset speed threshold value within the preset time, determining that the evaluation is passed.
2. The method of claim 1, wherein during the data transmission based on the selected communication network, further comprising:
continuing data transmission through the selected communication network in the case of a passing of the evaluation;
in case the evaluation fails, the communication network is reselected.
3. The method of claim 1, wherein during the data transmission based on the selected communication network, the method comprises:
the interactive terminal detects the proportion of the number of received data frames and the number of error frames in a preset time period;
when the occupied proportion is within a preset range, carrying out data transmission through the selected communication network;
and when the occupied proportion exceeds a preset range, the interactive terminal controls the unused wireless communication module to be in an open state so as to increase the wireless communication network.
4. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 3 when executing the computer program.
5. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 3.
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| CN207082904U (en) * | 2017-07-19 | 2018-03-09 | 山东科华电力技术有限公司 | A kind of Multifunctional power distribution automated system |
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| US10275387B2 (en) * | 2015-08-10 | 2019-04-30 | Mediatek Inc. | Method and associated interface circuit for mitigating interference due to signaling of a bus |
| US9832716B2 (en) * | 2015-08-12 | 2017-11-28 | Google Llc | Switching between networks based on quality of available networks |
| CN106655230A (en) * | 2016-11-28 | 2017-05-10 | 北京汉能创昱科技有限公司 | Intelligent battery management method and system for micro-grid |
| CN107493324B (en) * | 2017-07-31 | 2019-10-11 | 珠海格力电器股份有限公司 | Communication means and device between a kind of air-conditioner set |
| CN107707022A (en) * | 2017-08-30 | 2018-02-16 | 珠海格力电器股份有限公司 | A kind of DC micro power grid system and its communication means |
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| CN207082904U (en) * | 2017-07-19 | 2018-03-09 | 山东科华电力技术有限公司 | A kind of Multifunctional power distribution automated system |
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