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CN-121985402-A - Wireless transmitting power control method, power conversion equipment and power system

CN121985402ACN 121985402 ACN121985402 ACN 121985402ACN-121985402-A

Abstract

The application discloses a wireless transmitting power control method, power conversion equipment and a power system, which relate to the technical field of communication and comprise the steps of acquiring wireless communication link state parameters in a current evaluation window and determining communication quality of the power conversion equipment, so that the wireless transmitting power of the next adjustment period is reduced under the condition that the communication quality meets the communication quality requirement, and the communication quality is ensured while the energy consumption and the electromagnetic interference to surrounding power conversion equipment are reduced.

Inventors

  • XU SHUNAN
  • LIU LEI
  • YU YANFEI

Assignees

  • 阳光电源股份有限公司

Dates

Publication Date
20260505
Application Date
20260214

Claims (12)

  1. 1. A wireless transmission power control method, which is applied to a power conversion device in an electric power system, wherein a plurality of the power conversion devices in the electric power system are networked by adopting a wireless communication mode, the wireless transmission power control method comprising: Acquiring wireless communication link state parameters in a current evaluation window, wherein the current evaluation window at least comprises a current adjustment period; and reducing the wireless transmitting power of the next adjustment period under the condition that the wireless communication link state parameters in the current evaluation window meet the communication quality requirement.
  2. 2. The method according to claim 1, wherein the reducing the radio transmission power of the next adjustment period in the case where the radio communication link state parameter in the current evaluation window satisfies the communication quality requirement comprises: And under the condition that the packet loss rate in the wireless communication link state parameter of the current adjustment period is smaller than or equal to a first packet loss rate threshold value, determining to meet the communication quality requirement, and reducing the wireless transmitting power of the next adjustment period.
  3. 3. The wireless transmission power control method according to claim 1 or 2, characterized in that the wireless transmission power control method further comprises: Controlling the wireless transmitting power of the next adjustment period to be consistent with the wireless transmitting power of the current adjustment period under the condition that the packet loss rate in the wireless communication link state parameter of the current adjustment period is larger than the first packet loss rate threshold and smaller than the second packet loss rate threshold, wherein the first packet loss rate threshold is smaller than the second packet loss rate threshold; And under the condition that the packet loss rate in the wireless communication link state parameter of the current adjustment period is greater than or equal to the second packet loss rate threshold value, adjusting the wireless transmission power of the next adjustment period to the wireless transmission power which meets the communication quality requirement last time.
  4. 4. The method according to claim 1, wherein the reducing the radio transmission power of the next adjustment period in the case where the radio communication link state parameter in the current evaluation window satisfies the communication quality requirement comprises: And under the condition that the packet loss rate of N continuous adjustment periods in the current evaluation window is smaller than a first equal packet loss rate threshold value, determining to meet the communication quality requirement, and reducing the wireless transmitting power of the next adjustment period, wherein N is an integer larger than 1.
  5. 5. The wireless transmission power control method according to claim 1 or 4, characterized in that the wireless transmission power control method further comprises: Under the condition that the packet loss rate of N continuous adjustment periods in the current evaluation window is larger than the first packet loss rate threshold value and smaller than the second packet loss rate threshold value, controlling the wireless transmitting power of the next adjustment period to be consistent with the wireless transmitting power of the current adjustment period, wherein the first packet loss rate threshold value is smaller than the second packet loss rate threshold value; And under the condition that the packet loss rate of N continuous adjustment periods in the current evaluation window is larger than or equal to the second packet loss rate threshold value, adjusting the wireless transmission power of the next adjustment period to be the wireless transmission power which meets the communication quality requirement last time.
  6. 6. The wireless transmission power control method according to claim 2 or 4, wherein the reducing the wireless transmission power of the next adjustment period includes: Acquiring at least one of signal strength and link quality index in wireless communication link state parameters of a current adjustment period; and under the condition that the signal strength is larger than a signal strength threshold value and/or the link quality index is larger than a link quality index threshold value, reducing the wireless transmitting power of the next adjustment period.
  7. 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 comprises: After the power conversion device is powered on, communication setting is performed at the maximum allowable transmission power.
  8. 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 comprises: In the case of detecting a communication abnormality, the current wireless transmission power is adjusted to the maximum allowable transmission power.
  9. 9. The wireless transmission power control method according to claim 1, characterized in that the wireless transmission power control method further comprises: And receiving configuration parameters sent by a monitoring platform, wherein the configuration parameters comprise at least one of the duration of an adjustment period, the adjustment step length of wireless transmitting power and the threshold value corresponding to the wireless communication link state parameter.
  10. 10. A power conversion device is characterized by comprising a controller, a wireless communication module and a memory; the controller is connected with the wireless communication module through a control interface; the wireless communication module comprises a status register which stores wireless communication link status parameters in a current evaluation window; The controller is connected with the memory, and the memory stores computer programs and configuration parameters; The controller executing the computer program to implement the wireless transmit power control method of any one of claims 1-9.
  11. 11. An electrical power system comprising a plurality of power conversion apparatus of claim 10; And a plurality of power conversion devices are networked in a wireless communication mode.
  12. 12. The power system according to claim 11, characterized in that the power system further comprises: the monitoring platform is configured to send configuration parameters to the plurality of power conversion devices respectively, wherein the configuration parameters comprise at least one of the duration of an adjustment period, the adjustment step length of wireless transmission power and the threshold value corresponding to the wireless communication link state parameter.

Description

Wireless transmitting power control method, power conversion equipment and power system Technical Field The present application relates to the field of communications technologies, and in particular, to a wireless transmit power control method, a power conversion device, and an electric power system. Background In the fields of new energy power generation, energy storage and the like, networking communication of distributed equipment is a core link for realizing equipment monitoring, data transmission and system scheduling. The wireless communication scheme has been widely applied to networking of distributed devices such as inverters and energy storage converters by virtue of the advantages of flexible deployment, low construction cost, no need of complex wiring and the like. After the distributed devices such as the inverter, the energy storage converter and the like are networked in a wireless communication mode, all the distributed devices adopt fixed high transmitting power in order to ensure the communication quality of the node with the farthest wireless communication distance. However, if the wireless communication distance is short, the fixed high transmission power brings unnecessary energy consumption, and increases the overall power consumption of the device. Meanwhile, signals with high transmitting power are easy to generate stronger electromagnetic interference when in space propagation, and the normal operation of other surrounding devices is influenced. Disclosure of Invention In view of the above problems, the present application provides a wireless transmission power control method, a power conversion device, and a power system, which implement adaptive adjustment of wireless transmission power of the power conversion device. The specific scheme is as follows: The first aspect of the present application provides a wireless transmission power control method applied to a power conversion device in an electric power system, where a plurality of power conversion devices in the electric power system are networked by adopting a wireless communication mode, the wireless transmission power control method includes: Acquiring wireless communication link state parameters in a current evaluation window, wherein the current evaluation window at least comprises a current adjustment period; and reducing the wireless transmitting power of the next adjustment period under the condition that the wireless communication link state parameters in the current evaluation window meet the communication quality requirement. In one possible implementation, in a case where the wireless communication link status parameter within the current evaluation window meets the communication quality requirement, reducing the wireless transmission power of the next adjustment period includes: And under the condition that the packet loss rate in the wireless communication link state parameter of the current adjustment period is smaller than or equal to a first packet loss rate threshold value, determining to meet the communication quality requirement, and reducing the wireless transmitting power of the next adjustment period. In one possible implementation, if the packet loss rate in the wireless communication link state parameter of the current adjustment period is greater than the first packet loss rate threshold and less than a second packet loss rate threshold, controlling the wireless transmission power of the next adjustment period to be consistent with the wireless transmission power of the current adjustment period, wherein the first packet loss rate threshold is less than the second packet loss rate threshold; And under the condition that the packet loss rate in the wireless communication link state parameter of the current adjustment period is greater than or equal to the second packet loss rate threshold value, adjusting the wireless transmission power of the next adjustment period to the wireless transmission power which meets the communication quality requirement last time. In one possible implementation, in a case where the wireless communication link status parameter within the current evaluation window meets the communication quality requirement, reducing the wireless transmission power of the next adjustment period includes: and under the condition that the packet loss rate of N continuous historical adjustment periods in the current evaluation window is smaller than or equal to a first packet loss rate threshold value, determining to meet the communication quality requirement, and reducing the wireless transmitting power of the next adjustment period, wherein N is an integer larger than 1. In one possible implementation, if the packet loss rate of N consecutive adjustment periods in the current evaluation window is greater than the first packet loss rate threshold and less than a second packet loss rate threshold, controlling the wireless transmission power of the next adjustment period to be consistent with the