Power system high-power digital-analog hybrid simulation interface system

Abstract

The present invention provides a power system high-power digital-analog hybrid simulation interface system which comprises a digital side interface, an analog-to-digital converter, a digital-to-analog converter, a low pass filter, a subtracter, a high-power high-fidelity physical side interface and a measuring unit. Issued signals of a digital simulation subsystem are decomposed into lower frequency and high frequency components, the lower frequency and high frequency components are respectively used for controlling a high-power converter and a high-speed power amplifier for power amplification and real-time tracking, high-power digital-analog hybrid real-time simulation is achieved, the high-power and high-fidelity problem of the hybrid simulation interface system can be effectively solved, accuracy, dynamic performance and frequency band of hybrid simulation are improved, and the application field of the hybrid simulation is extended.

Description

Technical field [0001] The invention relates to the technical field of power-in-the-loop hybrid simulation of power systems, and in particular to a power system high-power digital-analog hybrid simulation interface system. Background technique [0002] With the emergence of large-scale new energy grid connection, micro-grid, large-scale grid interconnection, and UHV AC / DC hybrid transmission, my country’s power system has entered into large power plants, large units, large grid interconnection, high-voltage, ultra-high-voltage and UHV transmission coexistence and delivery. A new era of complementary and highly automatic DC transmission. In order to ensure the safe and reliable operation of various new equipment and large power grids, effective power system simulation methods must be adopted, a comprehensive simulation platform must be established, and in-depth research on the interaction mechanism of modern power grids in many aspects. [0003] However, pure physical simulation sim...

AI Technical Summary

Problems solved by technology

[0004] At present, the digital-analog hybrid real-time simulation adopted is mainly based on the signal in the loop, or the small power is in the loop, and the high-power digital-analog hybrid simulation cannot be realized. Therefore, it is necessary to provide a high-power system-level digital-analog hybrid simulation technology. technical issues to be resolved

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