Wireless transmission power control method, power conversion equipment and electric power system

Abstract

The invention discloses a wireless transmission power control method, power conversion equipment and a power system, and relates to the technical field of communication, and the method comprises the steps: obtaining a wireless communication link state parameter in a current evaluation window, determining the communication quality of the power conversion equipment, and enabling the power conversion equipment to carry out the wireless transmission power control under the condition that the communication quality meets a communication quality demand. The wireless transmitting power of the next adjustment period is reduced, and the energy consumption and the electromagnetic interference to surrounding power conversion equipment are reduced while the communication quality is ensured.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a wireless transmission power control method, power conversion device and power system. Background Technology

[0002] In fields such as new energy power generation and energy storage, networking communication for distributed devices is a core component for achieving equipment monitoring, data transmission, and system scheduling. Wireless communication solutions, with their advantages of flexible deployment, low construction costs, and no need for complex wiring, have been widely applied in the networking of distributed devices such as inverters and energy storage converters.

[0003] When distributed devices such as inverters and energy storage converters are networked using wireless communication, all distributed devices typically employ a fixed high transmit power to ensure communication quality at the furthest node. However, if the wireless communication distance is short, a fixed high transmit power leads to unnecessary energy consumption, increasing the overall power consumption of the devices. Furthermore, high-power signals are prone to generating strong electromagnetic interference during propagation, affecting the normal operation of surrounding equipment. Summary of the Invention

[0004] In view of the above problems, this application provides a wireless transmission power control method, a power conversion device, and a power system to achieve adaptive adjustment of the wireless transmission power of the power conversion device. The specific solution is as follows:

[0005] The first aspect of this application provides a wireless transmission power control method applied to power conversion devices in a power system, wherein multiple power conversion devices in the power system are networked using wireless communication, and the wireless transmission power control method includes:

[0006] Obtain the wireless communication link status parameters within the current evaluation window, which includes at least the current adjustment period;

[0007] If the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, reduce the wireless transmit power in the next adjustment period.

[0008] In one possible implementation, reducing the wireless transmit power in the next adjustment period, provided that the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, includes:

[0009] If the packet loss rate in the wireless communication link state parameters of the current adjustment period is less than or equal to the first packet loss rate threshold, it is determined that the communication quality requirement is met, and the wireless transmission power of the next adjustment period is reduced.

[0010] In one possible implementation, if the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than the first packet loss rate threshold and less than the second packet loss rate threshold, the wireless transmission power of the next adjustment period is controlled to be consistent with that of the current adjustment period, wherein the first packet loss rate threshold is less than the second packet loss rate threshold.

[0011] If the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than or equal to the second packet loss rate threshold, the wireless transmission power of the next adjustment period will be adjusted to the wireless transmission power that met the communication quality requirements in the previous period.

[0012] In one possible implementation, reducing the wireless transmit power in the next adjustment period, provided that the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, includes:

[0013] If the packet loss rate is less than or equal to the first packet loss rate threshold for N consecutive historical adjustment periods within the current evaluation window, it is determined that the communication quality requirement is met, and the wireless transmission power of the next adjustment period is reduced, where N is an integer greater than 1.

[0014] In one possible implementation, if the packet loss rate of N consecutive adjustment periods within the current evaluation window is greater than the first packet loss rate threshold and less than the second packet loss rate threshold, the wireless transmission power of the next adjustment period is controlled to be consistent with that of the current adjustment period, wherein the first packet loss rate threshold is less than the second packet loss rate threshold.

[0015] If the packet loss rate is greater than or equal to the second packet loss rate threshold for N consecutive adjustment periods within the current evaluation window, the wireless transmission power for the next adjustment period will be adjusted to the wireless transmission power that previously met the communication quality requirements.

[0016] In one possible implementation, reducing the wireless transmit power in the next adjustment cycle includes:

[0017] Obtain at least one of the signal strength and link quality index from the wireless communication link status parameters of the current adjustment period;

[0018] If the signal strength is greater than the signal strength threshold and / or the link quality index is greater than the link quality index threshold, reduce the wireless transmission power in the next adjustment cycle.

[0019] In one possible implementation, the wireless transmit power control method further includes:

[0020] After the power conversion device is powered on, communication settings are configured at the maximum permissible transmission power.

[0021] In one possible implementation, the wireless transmit power control method further includes:

[0022] If a communication anomaly is detected, the current wireless transmission power will be adjusted to the maximum allowed transmission power.

[0023] In one possible implementation, the wireless transmit power control method further includes:

[0024] The system receives configuration parameters sent by the monitoring platform, including at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameter.

[0025] A second aspect of this application provides a power conversion device, including: a controller, a wireless communication module, and a memory;

[0026] The controller is connected to the wireless communication module via a control interface;

[0027] The wireless communication module includes a status register, which stores wireless communication link status parameters within the current evaluation window.

[0028] The controller is connected to the memory, which stores computer programs and configuration parameters.

[0029] The controller executes the computer program to implement the wireless transmission power control method of the first aspect or any implementation thereof.

[0030] A third aspect of this application provides a power system including a plurality of power conversion devices described in the second aspect above;

[0031] Multiple power conversion devices are networked using wireless communication.

[0032] In one possible implementation, the power system further includes:

[0033] The monitoring platform is configured to send configuration parameters to multiple power conversion devices, the configuration parameters including at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold value of the wireless communication link status parameter within the current evaluation window.

[0034] Using the above technical solution, this application provides a wireless transmission power control method for power conversion equipment in a power system. By acquiring the wireless communication link status parameters within the current evaluation window, the communication quality of the power conversion equipment is determined. Thus, if the communication quality meets the communication quality requirements, the wireless transmission power in the next adjustment cycle is reduced, thereby reducing energy consumption and electromagnetic interference to surrounding power conversion equipment while ensuring communication quality. Attached Figure Description

[0035] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0036] Figure 1 A flowchart illustrating a wireless transmission power control method provided in an embodiment of this application;

[0037] Figure 2 A flowchart illustrating another wireless transmission power control method provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the structure of a power conversion device provided in an embodiment of this application. Detailed Implementation

[0039] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0040] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0042] This application provides a wireless transmission power control method applied to power conversion devices in a power system. Multiple power conversion devices in the power system are networked using wireless communication, such as Wi-Fi, and data transmission between them is achieved through direct connection to a router or by constructing a Wi-Fi-MESH network. The power conversion devices can be inverters, energy storage converters, etc., and this application does not specifically limit their applications.

[0043] When power conversion devices such as inverters and energy storage converters are networked using wireless communication, all devices employ a fixed high transmit power to ensure communication quality at the furthest node. However, this fixed transmit power wireless communication scheme has significant drawbacks. First, for power conversion devices with short wireless communication distances, a fixed high transmit power leads to unnecessary energy consumption, increasing the overall power consumption of the devices, especially during long-term operation. Second, high transmit power signals are prone to generating strong electromagnetic interference when propagating in space, affecting the normal operation of other surrounding power conversion devices and thus reducing the overall system's electromagnetic compatibility (EMC).

[0044] The wireless transmission power control method provided in this application reduces the wireless transmission power in the next adjustment cycle while ensuring communication quality, thereby reducing energy consumption and electromagnetic interference to surrounding power conversion equipment. The wireless transmission power control method of this application embodiment will be described in detail below with reference to the accompanying drawings.

[0045] Reference Figure 1 , Figure 1 This is a flowchart illustrating a wireless transmission power control method provided in an embodiment of this application, as shown below. Figure 1 As shown in the figure, a wireless transmission power control method provided in this application embodiment may include steps 101 to 102, which are described in detail below.

[0046] 101: Obtain the wireless communication link status parameters within the current evaluation window.

[0047] The current assessment window includes at least the current adjustment period, and may also include the current adjustment period and at least one historical adjustment period adjacent to the current adjustment period.

[0048] The adjustment period is preset; for example, it can be 1 hour, serving as the smallest unit for evaluating wireless transmit power adjustment. The adjustment period can be timed using a software timer.

[0049] In one possible implementation, the wireless communication link status parameters within the current evaluation window are read from the status register in the wireless communication module of the power conversion device.

[0050] Wireless communication link state parameters include at least one of the following: packet loss rate, signal quality index (RSSI), and link quality index (LQI).

[0051] Taking packet loss rate as an example, the packet loss rate for the current adjustment period is read from the status register of the wireless communication module in the power conversion device. In another possible implementation, for each historical adjustment period, the packet loss rate Rloss for that historical adjustment period is calculated based on the total number of data packets Ntotal sent and received by the wireless communication module in the power conversion device during that historical adjustment period and the number of lost data packets Nlost. The calculation formula is as follows:

[0052] .

[0053] 102: If the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, reduce the wireless transmit power in the next adjustment period.

[0054] Depending on the actual application scenario, the wireless communication link status parameters can be set based on the current adjustment period to determine whether the communication quality requirements are met, or the wireless communication link status parameters can be set for N consecutive adjustment periods (N is an integer greater than 1) within the current evaluation window to determine whether the communication quality requirements are met.

[0055] For example, if the packet loss rate in the current adjustment period is less than or equal to the first packet loss rate threshold, it indicates that the current communication quality of the power conversion equipment is good and meets the power adjustment conditions. It is possible to try to reduce the wireless transmission power to effectively reduce unnecessary energy consumption and at the same time reduce the signal coverage area, thereby effectively reducing electromagnetic interference to surrounding power conversion equipment.

[0056] In this embodiment, when reducing the wireless transmission power in the next adjustment period, the wireless transmission power in the next adjustment period can be reduced according to a preset wireless transmission power adjustment step size, or the wireless transmission power in the current adjustment period can be reduced by a preset proportion as the wireless transmission power in the next adjustment period. This embodiment does not make specific limitations.

[0057] To avoid the risk of sudden changes in Signal Strength Index (RSSI) and Link Quality Index (LQI) due to a one-time large reduction in power, which could cause communication fluctuations, this embodiment adjusts the current wireless transmission power according to a preset adjustment step size. For example, when it is necessary to reduce the current wireless transmission power, the wireless transmission power is reduced in a step size of 10% for the next adjustment cycle. That is, the adjusted wireless transmission power is (1-10%) of the current wireless transmission power, keeping the power change within a range that the hardware and communication link can adapt to, ensuring that the link remains stable after each adjustment.

[0058] This embodiment provides a wireless transmission power control method that, through software control and a communication status feedback mechanism, achieves adaptive adjustment of wireless transmission power without increasing hardware costs, thereby reducing energy consumption while ensuring communication quality. Experimental data shows that the wireless transmission power control method provided in this embodiment can reduce the average power consumption of power conversion equipment by 15% to 30% under stable operating conditions, and can significantly improve system energy efficiency in large-scale deployment scenarios.

[0059] Furthermore, the wireless transmission power control method provided in this embodiment reduces the wireless transmission power while maintaining good communication quality for the power conversion equipment, thereby decreasing the signal coverage area and effectively reducing electromagnetic interference to surrounding power conversion equipment. In high-density deployment scenarios such as rooftop photovoltaic systems, this reduction in electromagnetic interference not only helps improve overall communication stability but also reduces the complexity and cost of electromagnetic compatibility (EMC) design.

[0060] Step 102 in the above embodiments can be implemented in multiple ways. The following two examples illustrate this.

[0061] Example 1:

[0062] If the packet loss rate in the wireless communication link state parameters of the current adjustment period is less than or equal to the first packet loss rate threshold, the communication quality requirements are deemed met, and the wireless transmission power for the next adjustment period is reduced. The first packet loss rate is set according to the actual application scenario, for example, it can be set to 5%.

[0063] In one possible implementation, if the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than a first packet loss rate threshold but less than a second packet loss rate threshold, the wireless transmission power of the next adjustment period is controlled to be consistent with that of the current adjustment period. Here, the first packet loss rate threshold is less than the second packet loss rate threshold; for example, the second packet loss rate can be set to 7%, with 5%-7% serving as a control dead zone. Within this dead zone, the wireless transmission power remains unchanged, preventing repeated jumps in the wireless transmission power at the threshold point. If the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than or equal to the second packet loss rate threshold, the wireless transmission power of the next adjustment period is adjusted to the wireless transmission power that previously met the communication quality requirements. This increases the wireless transmission power of the power conversion device when the communication quality requirements are not met, ensuring the communication quality of the power conversion device.

[0064] This example demonstrates adaptive adjustment of wireless transmission power using adjustment cycles as the unit. It rapidly adjusts the transmission power based on the packet loss rate of the previous adjustment cycle, resulting in strong real-time performance and quick adaptation to changes in the communication link. Furthermore, the status register in the wireless communication module of the power conversion device only needs to store the packet loss rate of the current adjustment cycle, minimizing computational complexity and storage requirements.

[0065] Example 2:

[0066] If the packet loss rate is less than or equal to the first packet loss rate threshold for N consecutive adjustment periods within the current evaluation window, it is determined that the communication quality requirements are met, and the wireless transmission power of the next adjustment period is reduced. Here, N is an integer greater than 1, and the N adjustment periods include the current adjustment period. As in Example 1, the first packet loss rate threshold can also be set to 5%.

[0067] In one possible implementation, if the packet loss rate for N consecutive adjustment periods within the current evaluation window is greater than a first packet loss rate threshold but less than a second packet loss rate threshold, the power conversion device is in a wireless transmission power adjustment dead zone. The wireless transmission power in the next adjustment period is controlled to be consistent with that of the current adjustment period, i.e., the wireless transmission power remains unchanged, preventing repeated jumps in the wireless transmission power at the threshold point. If the packet loss rate for N consecutive adjustment periods within the current evaluation window is greater than or equal to the second packet loss rate threshold, it is determined that the communication quality of the power conversion device does not meet the communication quality requirements. The wireless transmission power in the next adjustment period is adjusted to the wireless transmission power that previously met the communication quality requirements, thereby increasing the wireless transmission power of the power conversion device when the communication quality requirements are not met, thus ensuring the communication quality of the power conversion device.

[0068] This example demonstrates that the wireless transmission power is reduced only when the packet loss rate is less than or equal to the first packet loss rate threshold for N consecutive adjustment periods. This effectively filters short-term random interference in the communication link. For example, in a rooftop photovoltaic system, an occasional packet loss rate less than or equal to the first packet loss rate threshold for one period (actually a false stability caused by interference) will not trigger power adjustment. This avoids the ineffective cycle of "blindly reducing power → subsequent excessive packet loss rate → power rollback," ensuring the stability of the wireless transmission power of the power conversion device, avoiding frequent changes in signal strength, reducing electromagnetic interference fluctuations to surrounding power conversion devices, and further improving the overall system's electromagnetic compatibility (EMC). This is particularly suitable for collaborative communication of multiple power conversion devices in high-density deployment scenarios. Furthermore, the wireless transmission power is increased only when the packet loss rate is greater than the second packet loss rate threshold for N consecutive adjustment periods, preventing unnecessary long-term energy consumption due to a short-term increase in the packet loss rate caused by short-term interference.

[0069] The two examples above are merely illustrations, and this application is not limited to them.

[0070] Please see Figure 2The method for adjusting wireless transmission power, as shown, involves the power conversion device, after power-on, completing network setup and establishing communication, recording its own wireless transmission power and packet loss rate within an adjustment period. This recording can include the packet loss rate of the current evaluation window, which at least includes the current adjustment period and may also include the packet loss rates of at least one adjacent historical adjustment period. Upon reaching a new adjustment period, if the recorded packet loss rate of the current evaluation window is less than or equal to a first packet loss rate threshold, the wireless transmission power is reduced according to a preset adjustment step size. If the recorded packet loss rate of the current evaluation window is greater than the first packet loss rate threshold but less than a second packet loss rate threshold, the wireless transmission power remains unchanged. If the recorded packet loss rate of the current evaluation window is greater than or equal to the second packet loss rate threshold, the wireless transmission power is adjusted to the level that previously met the communication quality requirements. This process continues until multiple consecutive adjustments have been made, after which communication stabilizes at the optimal wireless transmission power and remains stable.

[0071] Each power conversion device performs wireless transmission power adjustment independently. To ensure that wireless transmission power adjustment does not disrupt the stability of the communication link, the power conversion device can assess the current communication link status before adjusting the wireless transmission power.

[0072] In one possible implementation, reducing the wireless transmit power in the next adjustment cycle in any of the above examples specifically includes the following steps A1-A2:

[0073] A1: Obtain at least one of the signal strength and link quality index from the wireless communication link status parameters of the current adjustment period;

[0074] Signal strength refers to the signal strength between the power conversion device and the communication target. The network to which the power conversion device connects can be a star or mesh network structure using Wi-Fi communication. In a star network structure, the communication target is the central node (such as a router or gateway device of a monitoring platform). In a mesh network structure, the communication target is the neighboring power conversion device.

[0075] The power conversion device obtains the signal strength stored in the status register by reading the status register in the wireless communication module.

[0076] The link quality index is calculated by the built-in algorithm of the wireless communication module based on key parameters in the signal transmission process (such as signal-to-noise ratio, signal distortion, bit error rate, interference level, etc.).

[0077] The power conversion device obtains the link quality index stored in the status register by reading the status register in the wireless communication module.

[0078] A2: If the signal strength is greater than the signal strength threshold and / or the link quality index is greater than the link quality index threshold, reduce the wireless transmit power in the next adjustment period.

[0079] If the signal strength is less than or equal to the signal strength threshold, it indicates that the current signal strength is weak. If the link quality index is less than or equal to the link quality index threshold, it indicates that the current communication link quality is poor. In order to prioritize the availability of the communication link, if both the signal strength and the link quality index are greater than the signal strength threshold, the wireless transmission power in the next adjustment period will be reduced. Alternatively, if either the signal strength or the link quality index is greater than the signal strength threshold, the wireless transmission power in the next adjustment period will be reduced. However, if both the signal strength and the link quality index are less than or equal to the signal strength threshold, the reduction in the current wireless transmission power will be delayed, meaning that the current wireless transmission power will remain unchanged in the next adjustment period.

[0080] In a mesh network, node locations may change over time, and communication paths may fluctuate due to interference. Fixed power strategies are ill-suited to these dynamic changes, easily leading to a decline in communication quality for some nodes. This embodiment achieves adaptive adjustment of wireless transmission power by periodically evaluating packet loss rate and combining signal strength and link quality indicators, ensuring that each node always operates within the optimal wireless transmission power range. Regarding the stability and reliability of the communication link, the power adjustment mechanism enhances the system's adaptability to network topology changes and environmental interference. Compared to traditional methods, experimental data shows that the wireless transmission power control method provided in this embodiment can reduce the communication packet loss rate by approximately 20% to 40% under the same conditions, significantly improving the reliability of data transmission.

[0081] In one possible implementation, after the power conversion device is powered on, communication settings are configured at the maximum permissible transmit power to ensure successful network access. This maximum permissible transmit power is specified by radio management regulations.

[0082] The network to which the power conversion device needs to connect can be a star or mesh network structure using Wi-Fi communication. In a star network structure, the power conversion device directly attempts to establish a connection with the central node (such as a router or gateway device of a monitoring platform) at its maximum allowed transmit power. In a mesh network structure, the power conversion device first completes route discovery and establishment with neighboring nodes (i.e., neighboring power conversion devices) at its maximum allowed transmit power, ensuring the connectivity of the entire network topology. During the network access phase, the maximum allowed transmit power ensures that the power conversion device can successfully access the network and complete the initial configuration. After completing the initial configuration, the power conversion device executes the wireless transmit power control method provided in any of the above embodiments to achieve adaptive adjustment of the wireless transmit power.

[0083] In one possible implementation, the wireless transmission power control method provided in this embodiment also supports a fallback mechanism for wireless transmission power adjustment. When a communication anomaly is detected, such as the packet loss rate being greater than the packet loss rate threshold or the packet loss rate increasing significantly within multiple consecutive adjustment periods, communication interruption, or drastic changes in the neighbor node list (such as a decrease in the number of nodes in the neighbor node list exceeding a preset value), the current wireless transmission power is adjusted to the maximum allowable transmission power, and the route establishment or communication status assessment process is restarted (i.e., steps 101-102 in the above embodiment are re-executed) to ensure rapid recovery of the communication link and communication stability.

[0084] The parameters and thresholds in the above embodiments are configurable to adapt to different application scenarios. These parameters and thresholds can be set through the configuration file of the power conversion device or remotely issued by the monitoring platform to achieve flexible wireless transmission power adjustment strategies. In one possible implementation, the power conversion device receives configuration parameters sent by the monitoring platform. The configuration parameters include at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameters. The threshold corresponding to the wireless communication link status parameters includes the first packet loss rate threshold, the second packet loss rate threshold, the signal strength threshold, and the link quality index threshold involved in the above embodiments. Any of the wireless transmission power control methods provided in the embodiments of this application are executed according to the above configuration parameters.

[0085] This application also provides a power conversion device; please refer to [link to relevant documentation]. Figure 3 The schematic diagram of the power conversion device shown includes: a controller 301, a wireless communication module 302, and a memory 303.

[0086] Controller 301 is connected to wireless communication module 302 via a control interface;

[0087] The wireless communication module 302 includes a status register that stores wireless communication link status parameters within the current evaluation window;

[0088] The controller 301 is connected to the memory 303, which stores computer programs and configuration parameters. The configuration parameters include at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameters.

[0089] The controller 302 executes a computer program to implement any of the wireless transmission power control methods provided in the embodiments of this application.

[0090] The wireless transmission power control method implemented by the power conversion device provided in this embodiment is entirely based on the software configuration capabilities of existing wireless communication hardware, requiring no additional hardware modules. This avoids the increased cost and complexity associated with introducing dedicated power control units or complex algorithms in traditional power regulation schemes. By introducing a dynamic wireless transmission power adjustment mechanism based on communication quality feedback during communication, it effectively solves problems such as power consumption waste, severe electromagnetic interference, and insufficient communication stability in existing wireless communication schemes. It achieves multiple objectives—reducing overall device power consumption, improving communication quality, and enhancing electromagnetic compatibility—without increasing hardware costs, demonstrating broad application prospects and significant industrial value.

[0091] This application also provides a power system including multiple power conversion devices provided in the above embodiments. The multiple power conversion devices are networked using wireless communication, and the specific networking method can be a star or mesh network structure using WIFI communication.

[0092] The power system provided in this application embodiment allows each power conversion device to independently adjust its wireless transmission power. Through software control and communication status feedback mechanisms, the power conversion devices can adaptively adjust their wireless transmission power without increasing hardware costs, thereby reducing energy consumption and electromagnetic interference to surrounding power conversion devices while ensuring communication quality.

[0093] In one possible implementation, the power system also includes:

[0094] The monitoring platform is configured to send configuration parameters to multiple power conversion devices, the configuration parameters including at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameter.

[0095] The power system provided in this embodiment supports remote configuration and parameter adjustment. Configuration parameters can be dynamically issued by the monitoring platform to adapt to different deployment environments and user needs, further improving the system's flexibility and maintainability.

[0096] This application also provides a computer program product including computer-readable instructions, which, when executed on a power conversion device, cause the power conversion device to implement any of the wireless transmission power control methods provided in this application.

[0097] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by a power conversion device, the power conversion device can implement any of the wireless transmission power control methods provided in this application.

[0098] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0099] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0100] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product.

[0101] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

Claims

1. A wireless transmission power control method, characterized in that, A power conversion device applied in a power system, wherein multiple power conversion devices in the power system are networked using wireless communication, and the wireless transmission power control method includes: Obtain the wireless communication link status parameters within the current evaluation window, which includes at least the current adjustment period; If the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, reduce the wireless transmit power in the next adjustment period.

2. The wireless transmission power control method according to claim 1, characterized in that, The step of reducing the wireless transmit power in the next adjustment period, provided that the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, includes: If the packet loss rate in the wireless communication link state parameters of the current adjustment period is less than or equal to the first packet loss rate threshold, it is determined that the communication quality requirement is met, and the wireless transmission power of the next adjustment period is reduced.

3. The wireless transmission power control method according to claim 1 or 2, characterized in that, The wireless transmission power control method further includes: If the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than the first packet loss rate threshold and less than the second packet loss rate threshold, the wireless transmission power of the next adjustment period is controlled to be consistent with that of the current adjustment period, wherein the first packet loss rate threshold is less than the second packet loss rate threshold. If the packet loss rate in the wireless communication link state parameters of the current adjustment period is greater than or equal to the second packet loss rate threshold, the wireless transmission power of the next adjustment period will be adjusted to the wireless transmission power that met the communication quality requirements in the previous period.

4. The wireless transmission power control method according to claim 1, characterized in that, The step of reducing the wireless transmit power in the next adjustment period, provided that the wireless communication link state parameters within the current evaluation window meet the communication quality requirements, includes: If the packet loss rate is less than the first packet loss rate threshold for N consecutive adjustment periods within the current evaluation window, it is determined that the communication quality requirement is met, and the wireless transmission power is reduced in the next adjustment period, where N is an integer greater than 1.

5. The wireless transmission power control method according to claim 1 or 4, characterized in that, The wireless transmission power control method further includes: If the packet loss rate is greater than the first packet loss rate threshold and less than the second packet loss rate threshold for N consecutive adjustment periods within the current evaluation window, the wireless transmission power of the next adjustment period is controlled to be consistent with that of the current adjustment period, wherein the first packet loss rate threshold is less than the second packet loss rate threshold. If the packet loss rate is greater than or equal to the second packet loss rate threshold for N consecutive adjustment periods within the current evaluation window, the wireless transmission power for the next adjustment period will be adjusted to the wireless transmission power that previously met the communication quality requirements.

6. The wireless transmission power control method according to claim 2 or 4, characterized in that, The reduction of the wireless transmission power in the next adjustment cycle includes: Obtain at least one of the signal strength and link quality index from the wireless communication link status parameters of the current adjustment period; If the signal strength is greater than the signal strength threshold and / or the link quality index is greater than the link quality index threshold, reduce the wireless transmission power in the next adjustment cycle.

7. The wireless transmission power control method according to any one of claims 1, 2, and 4, characterized in that, The wireless transmission power control method further includes: After the power conversion device is powered on, communication settings are configured at the maximum permissible transmission power.

8. The wireless transmission power control method according to any one of claims 1, 2, and 4, characterized in that, The wireless transmission power control method further includes: If a communication anomaly is detected, the current wireless transmission power will be adjusted to the maximum allowed transmission power.

9. The wireless transmission power control method according to claim 1, characterized in that, The wireless transmission power control method further includes: The system receives configuration parameters sent by the monitoring platform, including at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameter.

10. A power conversion device, characterized in that, include: Controller, wireless communication module, and memory; The controller is connected to the wireless communication module via a control interface; The wireless communication module includes a status register, which stores wireless communication link status parameters within the current evaluation window. The controller is connected to the memory, which stores computer programs and configuration parameters. The controller executes the computer program to implement the wireless transmission power control method according to any one of claims 1-9.

11. An electric power system, characterized in that, Includes multiple power conversion devices as described in claim 10; Multiple power conversion devices are networked using wireless communication.

12. The power system according to claim 11, characterized in that, The power system also includes: The monitoring platform is configured to send configuration parameters to multiple power conversion devices, the configuration parameters including at least one of the following: the duration of the adjustment period, the adjustment step size of the wireless transmission power, and the threshold corresponding to the wireless communication link status parameter.

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