Load simulation device

By designing a miniaturized load simulation device, using DC power module, simulation module, main control module and other components, a comprehensive simulation of the dynamic characteristics of the power system is achieved, and the problems of inflexible adjustment parameters and high volume cost of existing devices are solved, and the flexibility and adaptability and practicality are greatly improved.

CN119716299APending Publication Date: 2025-03-28STATE GRID SHANDONG ELECTRIC POWER CO
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Patent Information

Application Number
CN202411644802.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing load simulation devices are not flexible enough when adjusting simulation parameters to quickly adapt to different test needs. Due to the complex circuit structure and a large number of components, the device is huge in size and costly, which limits the flexibility and practicality of its application.

Method used

A load simulation device is designed, adopting a miniaturized design, including a DC power module, an analog module, a main control module, a resistive load and an inductive load. Through the simulation module, any test load including harmonics, reactive, active, current disturbance, and three-phase unbalanced current is simulated according to the simulation command of the main control module.

Benefits of technology

It realizes a comprehensive simulation of various dynamic characteristics of the power system, has a flexible adjustment range, and meets different testing needs. Due to the use of power electronic devices, the device is smaller in size and lighter in weight, which is easy to transport and install, and reduces the footprint and cost.

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    Figure CN119716299A_ABST
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Abstract

The load simulation device comprises a cabinet body, a power interface is arranged on the side wall of the cabinet body, and a direct-current power module, a simulation module, a main control module, a resistive load and an inductive load are arranged in the cabinet body; the power interface is connected with a power grid to obtain an alternating current power supply; the direct-current power supply module is used for converting alternating-current power into direct-current power and transmitting the direct-current power to the simulation module; the simulation module is used for simulating any test load including harmonic wave, reactive power, active power, current disturbance and three-phase unbalanced current according to the simulation command of the main control module; and the main control module is used for receiving the simulation demand, generating a corresponding simulation command, sending the simulation command to the simulation module and the direct-current power supply module, acquiring feedback information of the simulation module in real time, and sending the feedback information to the predicted monitoring server. According to the invention, simulation parameters can be flexibly adjusted to simulate load characteristics, and the whole structure adopts a miniaturized design, so that the device is convenient to transport and high in adaptability.
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