CN-121984345-A - Power supply control method and device, electronic equipment and storage medium

CN121984345ACN 121984345 ACN121984345 ACN 121984345ACN-121984345-A

Abstract

The application provides a control method, a device, electronic equipment and a storage medium of a power supply, wherein the control method of the power supply comprises the steps of determining a first efficiency fitting function of each rectifying module through nonlinear regression based on historical load rate data and historical efficiency data of the rectifying module, determining a second efficiency fitting function of each bidirectional DC/DC module through nonlinear regression based on the historical load rate data and the historical efficiency data of the bidirectional DC/DC module, constructing a target efficiency function according to the first efficiency fitting function and the second efficiency fitting function, taking the efficiency of a power supply system as an optimal target, and solving the target efficiency function to obtain the first expected output power and the second expected output power.

Inventors

YANG LEI
WU CHAO
WANG BANGQIN
Tuo Haijun
LI YUSHENG
GAO QIAN
LIU JILIANG
Ye Zhengning
PENG SIQI
SHI HUAWEI
LIU QIANG
SUN GEFEI

Assignees

中移能源科技(北京)有限公司
中国移动通信集团设计院有限公司
中国移动通信集团有限公司

Dates

Publication Date: 20260505
Application Date: 20251224

Claims (10)

1. A control method of a power supply, characterized by being applied to a power supply system comprising at least one rectifying module and at least one bi-directional DC/DC module for connecting photovoltaic devices and/or battery packs, the method comprising: Determining a first efficiency fitting function of each rectification module through nonlinear regression based on the historical load rate data and the historical efficiency data of the rectification module, and determining a second efficiency fitting function of each bidirectional DC/DC module through nonlinear regression based on the historical load rate data and the historical efficiency data of the bidirectional DC/DC module; constructing a target efficiency function according to the first efficiency fitting function and the second efficiency fitting function, wherein the independent variables to be solved of the target efficiency function comprise a first expected output power of each rectifying module and a second expected output power of each bidirectional DC/DC module, and the dependent variables of the target efficiency function are the efficiency of the power supply system; solving the target efficiency function by taking the optimal efficiency of the power supply system as a target to obtain the first expected output power and the second expected output power; The independent variable of the first efficiency fitting function is the load rate of the rectifying module, the dependent variable of the first efficiency fitting function is the efficiency of the rectifying module, the independent variable of the second efficiency fitting function is the load rate of the bidirectional DC/DC module, and the dependent variable of the second efficiency fitting function is the efficiency of the bidirectional DC/DC module.
2. The method of claim 1, wherein the obtaining a first efficiency fit function for each of the rectification modules by non-linear regression based on the historical load rate data and the historical efficiency data of the rectification modules comprises: Obtaining a plurality of groups of first historical data respectively corresponding to the rectifying modules in an efficiency curve stabilizing period, wherein each group of first historical data comprises a first load rate and first efficiency; Fitting a first nonlinear function according to the first historical data to obtain a first efficiency fitting function; the determining, by nonlinear regression, a second efficiency fit function for each of the bidirectional DC/DC modules based on the historical load rate data and the historical efficiency data of the bidirectional DC/DC modules includes: obtaining a plurality of groups of second historical data corresponding to the bidirectional DC/DC module in the efficiency curve stabilizing period, wherein each group of second historical data comprises a second load rate and second efficiency; and fitting a second nonlinear function according to the second historical data to obtain the second efficiency fitting function.
3. The method according to claim 1 or 2, wherein said solving the target efficiency function, targeting the optimal efficiency of the power supply system, to obtain the first and second expected output powers, comprises: Obtaining solving constraint conditions; And solving the target efficiency function by a preset solving algorithm based on the solving constraint condition and with the optimal efficiency of the power supply system as a target, so as to obtain the first expected output power and the second expected output power.
4. The method of claim 3, wherein the predetermined solving algorithm comprises any one of Gurobi, CPLEX, COIN-OR, OR LocalSolver algorithm.
5. The method of claim 3, wherein the solving constraints include that the total output power of the power supply system is greater than or equal to the load power, the solving constraints further comprising at least one of: the current of the alternating current branch circuit where the rectifying module is positioned is smaller than or equal to the first current allowed by the circuit breaker on the alternating current branch circuit; The first expected output power is a non-negative value and is smaller than or equal to a first preset power threshold value of the corresponding rectifying module; The second expected output power is non-negative and less than or equal to a second preset power threshold of the corresponding bi-directional DC/DC module.
6. The method of claim 5, wherein, in the presence of a first bi-directional DC/DC module connected to a photovoltaic device, the solving constraints further comprises at least one of: the current of a direct current branch circuit where the first bidirectional DC/DC module is located is smaller than or equal to the second current allowed by a fuse wire on the direct current branch circuit; The ratio of the efficiency of the second expected output power to the corresponding first bidirectional DC/DC module is non-negative and less than or equal to the maximum output power of the photovoltaic device.
7. The method of claim 5, wherein in the presence of a second bi-directional DC/DC module coupled to the battery pack, the solving constraints further comprises at least one of: The current of a direct current branch circuit where the second bidirectional DC/DC module is located is smaller than or equal to the third current allowed by a fuse wire on the direct current branch circuit; The ratio of the second expected output power to the efficiency of the corresponding second bidirectional DC/DC module is a non-negative value and is less than or equal to the maximum output power of the battery pack; and the total discharge quantity is smaller than the residual quantity of the battery pack in a preset scheduling period.
8. A control apparatus for a power supply, characterized in that it is applied to a power supply system comprising at least one rectifying module and at least one bi-directional DC/DC module for connecting photovoltaic devices and/or battery packs, said apparatus comprising: The system comprises a rectifying module, a determining module, a second efficiency fitting function, a first efficiency fitting function, a second efficiency fitting function and a third efficiency fitting function, wherein the rectifying module is used for rectifying the load rate data of the first and second DC/DC modules; The construction module is used for constructing a target efficiency function according to the first efficiency fitting function and the second efficiency fitting function, the independent variables to be solved of the target efficiency function comprise first expected output power of each rectifying module and second expected output power of each bidirectional DC/DC module, and the dependent variables of the target efficiency function are the efficiency of the power supply system; the processing module is used for solving the target efficiency function by taking the optimal efficiency of the power supply system as a target to obtain the first expected output power and the second expected output power; The independent variable of the first efficiency fitting function is the load rate of the rectifying module, the dependent variable of the first efficiency fitting function is the efficiency of the rectifying module, the independent variable of the second efficiency fitting function is the load rate of the bidirectional DC/DC module, and the dependent variable of the second efficiency fitting function is the efficiency of the bidirectional DC/DC module.
9. An electronic device comprising a processor and a memory, the processor being configured to execute one or more programs stored in the memory to implement the steps of the method of controlling a power supply according to any one of claims 1-7.
10. A non-transitory computer storage medium storing one or more programs executable by one or more processors to implement the steps of the method of controlling a power supply of any of claims 1-7.

Description

Power supply control method and device, electronic equipment and storage medium Technical Field The present application relates to the field of power technologies, and in particular, to a method and apparatus for controlling a power, an electronic device, and a storage medium. Background In the related art, a linear power distribution model is mostly adopted in a technical scheme of a power supply of a communication machine room when determining output power of a power supply module (such as a rectifying module or a bidirectional DC/DC module). Taking droop control in the related art as an example, by simulating droop characteristics of a synchronous generator, the droop control method takes a linear relation of active power-frequency (P-f) or reactive power-voltage (Q-U) as a control basis to realize automatic power distribution when multiple power supplies are connected in parallel. For example, the rectifying module adjusts the output power according to the voltage fluctuation of the direct current bus, and increases the power output to maintain stability when the voltage decreases. The control method of the power supply in the related art has the problems of low power scheduling precision and low total output efficiency, and needs to be solved. Disclosure of Invention The application aims to provide a power supply control method, a power supply control device, electronic equipment and a storage medium. In order to solve the technical problems, the application is realized as follows: in a first aspect, the present application provides a control method of a power supply, applied to a power supply system, the power supply system including at least one rectifying module and at least one bidirectional DC/DC module, the at least one bidirectional DC/DC module being used for connecting a photovoltaic device and/or a battery pack, the method comprising: Determining a first efficiency fitting function of each rectifying module through nonlinear regression based on the historical load rate data and the historical efficiency data of the rectifying module; determining a second efficiency fit function for each of the bidirectional DC/DC modules based on historical load rate data and historical efficiency data for the bidirectional DC/DC modules; Constructing a target efficiency function according to the first efficiency fitting function and the second efficiency fitting function; solving the target efficiency function by taking the optimal efficiency of the power supply system as a target to obtain the first expected output power and the second expected output power; The independent variable of the first efficiency fitting function is the load rate of the rectifying module, the dependent variable of the first efficiency fitting function is the efficiency of the rectifying module, the independent variable of the second efficiency fitting function is the load rate of the bidirectional DC/DC module, the dependent variable of the second efficiency fitting function is the efficiency of the bidirectional DC/DC module, the independent variable to be solved of the target efficiency function comprises a first expected output power of each rectifying module and a second expected output power of each bidirectional DC/DC module, and the dependent variable of the target efficiency function is the efficiency of the power supply system. In a second aspect, the present application also provides a control device for a power supply, applied to a power supply system, the power supply system including at least one rectifying module and at least one bidirectional DC/DC module, the at least one bidirectional DC/DC module being used for connecting a photovoltaic device and/or a battery pack, the device comprising: the system comprises a rectifying module, a determining module, a second efficiency fitting function, a first efficiency fitting function, a second efficiency fitting function and a third efficiency fitting function, wherein the rectifying module is used for rectifying the load rate data of the first and second DC/DC modules; the construction module is used for constructing a target efficiency function according to the first efficiency fitting function and the second efficiency fitting function; the processing module is used for solving the target efficiency function by taking the optimal efficiency of the power supply system as a target to obtain the first expected output power and the second expected output power; The independent variable of the first efficiency fitting function is the load rate of the rectifying module, the dependent variable of the first efficiency fitting function is the efficiency of the rectifying module, the independent variable of the second efficiency fitting function is the load rate of the bidirectional DC/DC module, the dependent variable of the second efficiency fitting function is the efficiency of the bidirectional DC/DC module, the independent variable to be solved of the target efficiency funct