A power stage digital-analog hybrid simulation system

Abstract

The invention relates to the field of electrical power systems, in particular to a power level digital-analog hybrid simulation system. The power level digital-analog hybrid simulation system comprises a hardware circuit and a digital model, wherein the hardware circuit is used for achieving the power conversion between the digital side and the physical side and feedback signal acquisition input at the physical side, the digital model is used for achieving historical current calculation, delay compensation, current output at the digital side and voltage acquisition input at the physical side and decoupling a line model. The power conversion is carried out between the hardware circuit and the digital model, a digital simulator is connected with a device to be simulated in the physical side through the hardware circuit, calculation is completed by the digital model, calculating parameters are output to the hardware circuit, meanwhile, the hardware circuit feeds back electrical parameters to the digital model to serve as input, and the power level digital-analog hybrid simulation between the digital side and the physical side is achieved. The power level digital-analog hybrid simulation system adopts hardware and software sources, achieves power level hybrid simulation of the digital simulator and a physical simulation device, and solves the problems that access to actual power primary equipment such as a generator, a transformer, a line and a converter cannot be achieved and the simulation scale is small.

Description

Technical field [0001] The invention relates to the field of power systems, in particular to a power stage digital-analog hybrid simulation system. Background technique [0002] With the rapid development of computer technology, especially parallel computing technology, and the increasing application of various real-time digital simulation tools and physical simulation devices to the field of power electronics and power system simulation, the scale of simulation and research fields have been greatly expanded. As one of the advanced simulation methods, digital-analog hybrid simulation can not only perform full digital simulation of the system, but also perform simulation tests on physical devices, which optimizes the simulation process of the power system. [0003] Many published documents use digital-analog hybrid simulation to test secondary equipment such as relay protection and DC control systems. During simulation, the interface interacts with semaphores, so this type of simul...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a power level digital-analog hybrid simulation system. The hybrid simulation system provided by the present invention adopts hardware and software resources to realize the power level hybrid simulation of a digital simulator and a physical simulation device, so as to achieve reasonable Utilize resources, improve the simulation level, provide new means for the study of AC and DC power grids, and solve the problem of being unable to connect to actual power primary equipment such as generators, transformers, lines, and converters, and the simulation scale is small

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