Method for timely computing unfixed-point interpolation of switch within step size

Abstract

The invention provides a method for timely computing the unfixed-point interpolation of a switch within step size. The method comprises the following steps of: computing an electromagnetic transient first step size point status value, and discovering that the switch can move within the step size; carrying out the interpolated value computation on a switch action point status value; computing the next step point size status value from the switch action point; and computing the next whole step size point from the current step size point extrapolated value. When the method is used for computing the switch characteristic circuit, the computing speed of a switch subnet can be improved, and the real-time computation can be preferably carried out. Therefore, the time margin can be provided for improving the computing precision of the switch, the method can be used for the electromagnetic transient simulation computation of the switch characteristic circuit by means of real time, faster-than-real-time and offline, and the whole step size computation can be compatible with various electromagnetic transient switch algorithms and can not limited to the trapezoidal rule, the backward eulerian method, the trapezoidal rule with damp or the modification change assembly of the trapezoidal rule, the backward eulerian method and the trapezoidal rule with damp, so that the computation speed and precision of the simulation can be effectively improved, and the electromagnetic transient real-time computation performance can be optimized.

Description

technical field [0001] The invention relates to a calculation method, in particular to a real-time uncertain-point interpolation calculation method of a switch within a step. Background technique [0002] Time-domain simulation has become an important tool for power system analysis, design and research. With the wide application of power electronics technology, flexible AC transmission, high-voltage direct current Energy generation equipment generally needs to be connected to the power grid through power electronic converters, and the network topology of power electronic switches, which essentially changes with time, poses new requirements and challenges for traditional power system time-domain simulations. Especially in the real-time simulation of electromagnetic transients, on the premise of ensuring the real-time performance of the calculation, it is a thorny technical difficulty to calculate the power electronic switching action at frequent and non-full-step long-term po...

AI Technical Summary

Problems solved by technology

[0002] Time-domain simulation has become an important tool for power system analysis, design and research. With the wide application of power electronics technology, flexible AC transmission, high-voltage direct current Energy generation equipment generally needs to be connected to the grid through power electronic converters, and the network topology of power electronic switches, which is essentially changing with time, poses new requirements and challenges for traditional power system time domain simulation. Especially in the real-time simulation of electromagnetic transients, on the premise of ensuring the real-time performance of the calculation, it is a thorny technical difficulty to calculate the power electronic switching action at frequent and non-full-step long-term points

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