Charging control method for node device of networked charging system

Abstract

The invention provides a charging control method for a node device of a networked charging system. The charging control method comprises the following steps of: S1, constructing a current prediction model of a charging current of a node device in a networked charging system; S2, constructing the current reference model of the node device in the charging process, and taking the current reference model as expected output of the charging system; and S3, taking the minimum variance value of the current prediction model and the current reference model as an objective function, and obtaining the charging control strategy of the node device by adopting a rolling optimization algorithm. According to the invention, the current of the power supply output cable in the charging process of the node device of the networked electric fish blocking system can be effectively reduced, and the safety risks of overheating and sagging of a cable, system damage and the like caused by the overload of the cable are avoided. A current fluctuation ratio on the cable bus can be effectively inhibited, and the problems of power supply overcurrent protection, system component damage, system failure and the likecaused by overlarge current fluctuation ratio are avoided; and when the node device put into use is increased due to the change of the use environment of the system, the output current can be kept within a set value all the time, so that the expansibility and the flexibility are relatively high.

Description

technical field [0001] The invention relates to a charging control method, in particular to a charging control method for a node device of a networked charging system applied to an electric battery. Background technique [0002] Networked charging systems are widely used in modern industrial production and life. For example, the electric fish blocking technology in the field of fish farming uses electric fences to block fish. When the electric fish blocking system is applied to large-section rivers, lakes, oceans, etc., small Due to the limited effective working range of the single-machine electric fish-blocking equipment, it cannot meet the demand. It is necessary to combine multiple single-machine electric fish-blocking devices and network them to form a networked electric fish-blocking system to meet the needs of large-section scenarios. [0003] During the working process of the networked power grid system, it is necessary to periodically charge many node devices. Howeve...

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Problems solved by technology

[0002] Networked charging systems are widely used in modern industrial production and life. For example, the electric fish blocking technology in the field of fish farming uses electric fences to block fish. When the electric fish blocking system is applied to large-section rivers, lakes, oceans, etc., small Due to the limited effective working range of single-machine electric fish-blocking equipment, it cannot meet the demand. It is necessary to combine multiple single-machine electric fish-blocking devices and network them to form a networked electric fish-blocking system to meet the needs of large-section scenarios.

[0003] During the working process of the networked power grid system, it is necessary to periodically charge many node devices. However, the power output cable of the system has a capacity limit, and charging a large number of nodes at the same time will cause the cable to be overloaded, causing the temperature of the cable to rise. high, sagging and damage, etc., and even cause major safety problems and economic losses

[0004] In addition, when the change of the system usage environment leads to an increase in the number of node devices put into use, the rate of change of the output current of the power supply will increase

Excessive current change rate will not only damage the system components, but also cause misjudgment of the power module, which will cause over-current protection of the power supply, stop the system, and cause serious economic losses. At present, there is no corresponding technology to solve the above technical problems. solve

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