LIU Jin,QIU Zijian,PANG Bohan,et al.Efficient Simulation Method for Electromagnetic Transient of Clamp Double Sub-module Modular Multi-level Converter Considering Capacitance Transition Process[J].Automation of Electric Power Systems,2022,46(24):170-177.
LIU Jin,QIU Zijian,PANG Bohan,et al.Efficient Simulation Method for Electromagnetic Transient of Clamp Double Sub-module Modular Multi-level Converter Considering Capacitance Transition Process[J].Automation of Electric Power Systems,2022,46(24):170-177. DOI: 10.7500/AEPS20210930004.
Efficient Simulation Method for Electromagnetic Transient of Clamp Double Sub-module Modular Multi-level Converter Considering Capacitance Transition Process
Aiming at the problems of complex topology and slow simulation speed of clamp double sub-module (CDSM) modular multi-level converter (CDSM-MMC) in the electromagnetic transient program
the semi-implicit delay decoupling method is applied to the fast simulation research of the electromagnetic transient of CDSM-MMC. A efficienct simulation method with simple decoupling circuit
constant admittance matrix
and easy parallelism is proposed
which takes into account the transition process of shunt capacitors. First
the state space equation of the CDSM is established. By splitting the system matrix and applying the time delay characteristics between variables of different integral formats
the decoupling model of CDSM considering the transition process of the shunt capacitor in the normal state and the blocking state is obtained. Then
the characteristics of the model are analyzed and the calculation timing and flow are designed. Finally
an example is used to verify that the model in this paper not only greatly improves the simulation efficiency of the CDSM-MMC
but also takes into account the higher simulation accuracy.
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