Energy management communication system based on Lora wireless communication technology

Abstract

The invention provides an energy management communication system based on a Lora wireless communication technology, which comprises a first port controller, a second port controller, a third port controller and a fourth port controller, and is characterized in that each port controller consists of a DSP (Digital Signal Processor) control panel and a Lora wireless gateway; the data transmission among the four port controllers is realized through Lora wireless transmission; and when any one port controller is a communication master station, the other three port controllers are communication slave stations. A one-master and three-slave Lora wireless data communication structure is adopted, and the structure is clear. Wherein when one port controller serves as a communication master station, the other three port controllers serve as communication slave stations, and the four port controllers have the functions of serving as the communication master station and also serving as the communication slave stations. The whole energy management communication system is strong in robustness and high in operation reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of energy communication management, and in particular to an energy management communication system based on Lora wireless communication technology. Background Art

[0002] Energy management communication system plays an important role in the new generation of smart grid. It is a management and control system that performs AC / DC conversion, measurement, monitoring, control, protection and high-level strategy implementation on the grid. Energy management communication system requires a large amount of data transmission and data exchange, and must have stable and reliable data communication functions.

[0003] It is difficult to lay communication cables in remote mountainous areas, and the cost is very high. Wireless communication has solved the problem of difficult wiring of communication cables. The previous wireless communication system often used 4G\5G wireless communication technology, which relied on communication service providers such as China Mobile and China Unicom and their base station signals, which was costly and caused unstable communication. Summary of the invention

[0004] Based on this, the purpose of the present invention is to propose an energy management communication system based on Lora wireless communication technology, which aims to solve the problem that traditional technology relies on communication service providers such as China Mobile and China Unicom and their base station signals, has high costs and unstable communications.

[0005] In a first aspect, an embodiment of the present invention provides an energy management communication system based on Lora wireless communication technology, the system comprising a first port controller, a second port controller, a third port controller and a fourth port controller, wherein: each port controller is composed of a DSP control board and a Lora wireless gateway; The data transmission between the four port controllers is via Lora wireless transmission; When any one port controller is the communication master station, the other three port controllers are communication slave stations.

[0006] In some embodiments, the address range 0x0-0x100 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 2 in the second port controller through the Lora wireless communication network; The address range 0x100-0x200 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 2 in the second port controller through the Lora wireless communication network.

[0007] In some embodiments, the DSP control board 2 in the second port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 2; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 2 of the second port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, transmits it and stores it in the address area 0x0-0x100 of the DSP control board 1 in the first port controller.

[0008] In some embodiments, after the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the second port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 2 of the second port controller; The wireless communication data is converted into Modbus-RTU protocol data by the Lora wireless communication gateway 2, transmitted and stored in the address area 0x101-0x200 of the DSP control board 2 in the second port controller, and finally the DSP control board 2 in the second port controller controls the layered access device 2 to output power according to the new power set value.

[0009] In some embodiments, the address range 0x201-0x300 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 3 in the third port controller through the Lora wireless communication network; The address range 0x301-0x400 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 3 in the third port controller through the Lora wireless communication network.

[0010] In some embodiments, the DSP control board 3 in the third port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 3; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 3 of the third port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller, and the Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, which is then transmitted and stored in the address area of ​​0x201-0x300 of the DSP control board 1 in the first port controller.

[0011] In some embodiments, after the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the third port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the calculated new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 3 of the third port controller, so that the wireless communication data is converted by the Lora wireless communication gateway 3 into Modbus-RTU protocol data, and finally transmitted and stored in the address area 0x301-0x400 of the DSP control board 3 in the third port controller, and the DSP control board 3 in the third port controller controls the layered access device 3 to output power according to the new power set value.

[0012] In some embodiments, the address range 0x401-0x500 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 4 in the fourth port controller through the Lora wireless communication network; The address range 0x501-0x600 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 4 in the fourth port controller through the Lora wireless communication network.

[0013] In some embodiments, the DSP control board 4 in the fourth port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 4; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 4 of the fourth port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, transmits it and stores it in the address area of ​​0x401-0x500 of the DSP control board 1 in the first port controller.

[0014] In some embodiments, after the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the fourth port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the calculated new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 4 of the fourth port controller, so that the wireless communication data is converted by the Lora wireless communication gateway 4 into Modbus-RTU protocol data, and finally transmitted and stored in the address area 0x100-0x200 of the DSP control board 4 in the fourth port controller, and the DSP control board 4 in the fourth port controller controls the layered access device 4 to output power according to the new power set value.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The energy management communication system based on Lora wireless communication technology proposed in the present invention can not only meet the requirements of stable and reliable transmission of data and power output required for power grid energy management without relying on communication service providers, but also greatly reduce operating costs.

[0016] 2. The communication system proposed in the present invention is specifically composed of four port controllers, the structures of the four port controllers are exactly the same, and the data transmission between the four port controllers is through Lora wireless transmission. Each port controller is composed of a DSP control board and a Lora wireless gateway, which is fully functional and has a clear and simple communication structure.

[0017] 3. The four port controllers of the system provided by the present invention adopt a Lora wireless data communication structure with one master and three slaves, and the structure is clear. When one of the port controllers is used as a communication master station, the other three port controllers are used as communication slave stations, and the four port controllers have the functions of being both a communication master station and a communication slave station. The entire energy management communication system has strong robustness and high operational reliability.

[0018] 4. The system proposed in the present invention adopts Lora wireless communication technology, which eliminates the physical connection of data communication cables between ports and does not require maintenance by operators such as China Mobile and China Unicom, greatly reducing costs. It also supports long-distance communication, has good real-time performance, and strong anti-interference ability.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description or will be learned through embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of an energy management communication system based on Lora wireless communication technology in one embodiment of the present invention.

[0021] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figure 1 As shown, an embodiment of the present invention proposes an energy management communication system based on Lora wireless communication technology, and the communication system is specifically composed of four port controllers, and the four port controllers have exactly the same structure, namely, the first port controller, the second port controller, the third port controller and the fourth port controller, and each port controller is composed of a DSP control board and a Lora wireless communication gateway. The control core of each DSP control board is a 28335 digital signal processor of the DSP2000 series, and each Lora wireless communication gateway has the function of converting the Modbus-RTU communication protocol into the Lora wireless communication protocol. Each DSP control board in each port controller is connected to the 485 interface of a Lora wireless communication gateway through a twisted pair through the physical interface 485 interface on its own board. The data transmission between the four port controllers is transmitted through the Lora wireless protocol. The four port controllers have the function of wirelessly receiving or sending the data required for energy management such as the load side power value, current value and grid side data between the four ports through the Lora wireless communication gateway, thereby realizing power control of the four layered access devices respectively.

[0025] In addition, the four port controllers of the communication system adopt a Lora wireless data communication structure with one master and three slaves, which has a clear structure, and the four port controllers have the function of being both a communication master station and a communication slave station. When one of the port controllers in the energy communication system serves as a communication master station, the other three port controllers serve as communication slave stations. The port controller as the master station exchanges data with the other three port controllers as slave stations through Lora wireless transmission, and then the port controller as the master station performs energy calculation and energy judgment, and sends the calculated reasonable power values ​​to the three port controllers as slave stations respectively. The three port controllers as slave stations control their corresponding hierarchical access devices to output power according to the sent power values. The communication system avoids the situation where the entire energy management system cannot distribute power and work normally when one port controller is damaged. The entire system has strong robustness and high operational reliability.

[0026] In some embodiments, taking port controller 1 (first port controller) as a communication master station, port controller 2 (second port controller), port controller 3 (third port controller) and port controller 4 (fourth port controller) as communication slave stations as an example, the examples are as follows: Port controller 1 is used as the data communication master station, and its hardware address is set to 1. Port controller 2, port controller 3, and port controller 4 are used as communication slave stations, and their hardware addresses are set to 2, 3, and 4 respectively. The hardware address of each port controller is set differently to avoid data read and write conflicts. In addition, port controller 1 also needs to set up independent read storage areas and write storage areas when communicating with the other three port controllers. The data transmission between the four port controllers adopts the Lora wireless communication method, which is stable, reliable, and has strong anti-interference ability.

[0027] The address range 0x0-0x100 is set to be the data storage area where the DSP control board 1 in the port controller 1 reads the DSP control board 2 in the port controller 2 through the Lora wireless communication network. First, the DSP control board 2 in the port controller 2 converts the three-phase load current value, AC load power value, DC load power value, load rate and other data of the layered access device 2 into Lora wireless communication protocol data through the Lora wireless communication gateway 2 of the port controller 2, and then transmits it to the Lora wireless communication gateway 1 in the port controller 1 by wireless means. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, and transmits and stores it in the address area 0x0-0x100 of the DSP control board 1 in the port controller 1.

[0028] The address range 0x100-0x200 is set to be the data storage area sent by the DSP control board 1 in the port controller 1 to the DSP control board 2 in the port controller 2 through the Lora wireless communication network. After receiving the above-mentioned data transmitted wirelessly from the port controller 2, the DSP control board 1 in the port controller 1 first performs energy analysis, power calculation and load rate closed-loop control, calculates the new power setting value, and then converts it into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 2 of the port controller 2. These wireless communication data are converted into Modbus-RTU protocol data by the Lora wireless communication gateway 2, and finally transmitted and stored in the address area 0x101-0x200 of the DSP control board 2 in the port controller 2. Finally, the DSP control board 2 in the port controller 2 controls the layered access device 2 to output power according to the new power setting value.

[0029] The address range 0x201-0x300 is set to be the data storage area of ​​the DSP control board 3 in the port controller 3 read by the DSP control board 1 in the port controller 1 through the Lora wireless communication network. First, the DSP control board 3 in the port controller 3 converts the three-phase load current value, AC load power value, DC load power value, load rate and other data of the layered access device 3 into Lora wireless communication protocol data through the Lora wireless communication gateway 3 of the port controller 3, and transmits it to the Lora wireless communication gateway 1 in the port controller 1 by wireless means. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, and transmits and stores it in the address area 0x201-0x300 of the DSP control board 1 in the port controller 1.

[0030] The address range 0x301-0x400 is set to be the data storage area sent by the DSP control board 1 in the port controller 1 to the DSP control board 3 in the port controller 3 through the Lora wireless communication network. After receiving the above-mentioned data transmitted wirelessly from the port controller 3, the DSP control board 1 in the port controller 1 first performs energy analysis, power calculation and load rate closed-loop control, calculates the new power setting value, and then converts it into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 3 of the port controller 3. These wireless communication data are converted into Modbus-RTU protocol data by the Lora wireless communication gateway 3, and finally transmitted and stored in the address area 0x301-0x400 of the DSP control board 3 in the port controller 3. Finally, the DSP control board 3 in the port controller 3 controls the layered access device 3 to output power according to the new power setting value.

[0031] The address range 0x401-0x500 is set to be the data storage area of ​​the DSP control board 4 in the port controller 4 read by the DSP control board 1 in the port controller 1 through the Lora wireless communication network. First, the DSP control board 4 in the port controller 4 converts the three-phase load current value, AC load power value, DC load power value, load rate and other data of the layered access device 4 into Lora wireless communication protocol data through the Lora wireless communication gateway 4 of the port controller 4, and transmits it to the Lora wireless communication gateway 1 in the port controller 1 by wireless means. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, and transmits and stores it in the address area 0x401-0x500 of the DSP control board 1 in the port controller 1.

[0032] The address range 0x501-0x600 is set to be the data storage area sent by the DSP control board 1 in the port controller 1 to the DSP control board 4 in the port controller 4 through the Lora wireless communication network. After receiving the above-mentioned data transmitted wirelessly from the port controller 4, the DSP control board 1 in the port controller 1 first performs energy analysis, power calculation and load rate closed-loop control, calculates the new power setting value, and then converts it into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 4 of the port controller 4. These wireless communication data are converted into Modbus-RTU protocol data by the Lora wireless communication gateway 4, and finally transmitted and stored in the address area 0x100-0x200 of the DSP control board 4 in the port controller 4. Finally, the DSP control board 4 in the port controller 4 controls the layered access device 4 to output power according to the new power setting value.

[0033] Similarly, in some other embodiments of the present invention, port controller 2 can also be used as a communication master station, and port controller 1, port controller 3, and port controller 4 can be used as communication slave stations. Similarly, other port controllers can also be used as communication master stations. This avoids the situation where the entire energy management communication system cannot work properly and the hierarchical access device cannot output power when one port controller is damaged. The entire system has strong robustness and high operational reliability.

[0034] In summary, the energy management communication system based on the Lora wireless communication technology mentioned above has the following advantages: 1. The energy management communication system based on the Lora wireless communication technology proposed in the present invention can not only be independent of communication service providers, but also meet the requirements of stable and reliable transmission of data, power output, etc. required for power grid energy management, and can also greatly reduce operating costs.

[0035] 2. The communication system proposed in the present invention is specifically composed of four port controllers, the structures of the four port controllers are exactly the same, and the data transmission between the four port controllers is through Lora wireless transmission. Each port controller is composed of a DSP control board and a Lora wireless gateway, which is fully functional and has a clear and simple communication structure.

[0036] 3. The four port controllers of the system provided by the present invention adopt a Lora wireless data communication structure with one master and three slaves, and the structure is clear. When one of the port controllers is used as a communication master station, the other three port controllers are used as communication slave stations, and the four port controllers have the functions of being both a communication master station and a communication slave station. The entire energy management communication system has strong robustness and high operational reliability.

[0037] 4. The system proposed in the present invention adopts Lora wireless communication technology, which eliminates the physical connection of data communication cables between ports and does not require maintenance by operators such as China Mobile and China Unicom, greatly reducing costs. It also supports long-distance communication, has good real-time performance, and strong anti-interference ability.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An energy management communication system based on Lora wireless communication technology, characterized in that: The system comprises a first port controller, a second port controller, a third port controller and a fourth port controller, wherein: Each port controller consists of a DSP control board and a Lora wireless gateway; The data transmission between the four port controllers is via Lora wireless transmission; When any one port controller is the communication master station, the other three port controllers are communication slave stations.

2. The energy management communication system based on Lora wireless communication technology according to claim 1 is characterized in that: The address range 0x0-0x100 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 2 in the second port controller through the Lora wireless communication network; The address range 0x100-0x200 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 2 in the second port controller through the Lora wireless communication network.

3. The energy management communication system based on Lora wireless communication technology according to claim 2 is characterized in that: The DSP control board 2 in the second port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 2; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 2 of the second port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, transmits it and stores it in the address area 0x0-0x100 of the DSP control board 1 in the first port controller.

4. The energy management communication system based on Lora wireless communication technology according to claim 2 is characterized in that: When the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the second port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 2 of the second port controller; The wireless communication data is converted into Modbus-RTU protocol data by the Lora wireless communication gateway 2, transmitted and stored in the address area 0x101-0x200 of the DSP control board 2 in the second port controller, and finally the DSP control board 2 in the second port controller controls the layered access device 2 to output power according to the new power set value.

5. The energy management communication system based on Lora wireless communication technology according to claim 1, characterized in that: The address range 0x201-0x300 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 3 in the third port controller through the Lora wireless communication network; The address range 0x301-0x400 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 3 in the third port controller through the Lora wireless communication network.

6. The energy management communication system based on Lora wireless communication technology according to claim 5 is characterized in that: The DSP control board 3 in the third port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 3; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 3 of the third port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller, and the Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, which is then transmitted and stored in the address area of ​​0x201-0x300 of the DSP control board 1 in the first port controller.

7. The energy management communication system based on Lora wireless communication technology according to claim 5, characterized in that: When the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the third port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the calculated new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 3 of the third port controller, so that the wireless communication data is converted into Modbus-RTU protocol data by the Lora wireless communication gateway 3, and finally transmitted and stored in the address area 0x301-0x400 of the DSP control board 3 in the third port controller, and the DSP control board 3 in the third port controller controls the layered access device 3 to output power according to the new power set value.

8. The energy management communication system based on Lora wireless communication technology according to claim 1, characterized in that: The address range 0x401-0x500 is set to be the data storage area where the DSP control board 1 in the first port controller reads the DSP control board 4 in the fourth port controller through the Lora wireless communication network; The address range 0x501-0x600 is set to be the data storage area that the DSP control board 1 in the first port controller sends to the DSP control board 4 in the fourth port controller through the Lora wireless communication network.

9. The energy management communication system based on Lora wireless communication technology according to claim 8, characterized in that: The DSP control board 4 in the fourth port controller hierarchically accesses the three-phase load current value, AC load power value, DC load power value, and load rate of the device 4; After being converted into Lora wireless communication protocol data by the Lora wireless communication gateway 4 of the fourth port controller, it is transmitted wirelessly to the Lora wireless communication gateway 1 in the first port controller. The Lora wireless communication gateway 1 converts the received wireless data into Modbus-RTU protocol data, transmits it and stores it in the address area of ​​0x401-0x500 of the DSP control board 1 in the first port controller.

10. The energy management communication system based on Lora wireless communication technology according to claim 8, characterized in that: After the DSP control board 1 in the first port controller receives the data wirelessly transmitted from the fourth port controller, it performs energy analysis, power calculation and load rate closed-loop control, and converts the calculated new power set value into Lora wireless communication data through the Lora wireless communication gateway 1 and sends it to the Lora wireless communication gateway 4 of the fourth port controller, so that the wireless communication data is converted into Modbus-RTU protocol data by the Lora wireless communication gateway 4, and finally transmitted and stored in the address area 0x100-0x200 of the DSP control board 4 in the fourth port controller, and the DSP control board 4 in the fourth port controller controls the layered access device 4 to output power according to the new power set value.

Images