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In a multi-infeed (MI) HVDC system with inverter and rectifier infeeds, the interaction between the inverter and the rectifier influences the inverter's steady-state and transient characteristics. In this paper, the electromagnetic transient (EMT) model of such a multi-infeed system is used to investigate this influence. The simulation results show that a nearby rectifier will help the inverter by...
This paper identifies potential problems in integrating a point to point voltage source converter based HVDC system to an AC network. The AC network utilizes the classical two-area system where all generators are equipped with voltage and damping controls. A detailed model of the VSC transmission system and its control are provided. For simplicity, the windfarm is modelled as a negative load with...
This paper presents a methodology to study the impact of different DC voltage droop settings on the AC system stability. When several Voltage Source Converters (VSC) in a DC system jointly control the DC voltage by means of droop control, an outage of one converter results in an abrupt change of the active power set-points of several other converters. This relative power change is related to the relative...
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