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In practical power converter based circuits, voltage and current limits of power converters are inevitable. However, there is a lack of comprehensive investigation of steady state operating boundaries of HVDC systems with converter voltage and current limits. This paper proposes a modified algorithm based on current injection Newton-Raphson method. It is capable of solving the power flow of multi-infeed...
The Manitoba Hydro major transmission system features a topology consisting of very high HVdc penetration level, tightly coupled rectifiers as well as tightly coupled inverters. The tight coupling at the rectifiers or the sending end results in multi-egress system characteristics, where as the tight coupling at the inverters or the receiving end results in its multi-infeed characteristics. This paper...
There are serious concerns relating to a multi-infeed HVDC system when feeding a weak AC network. Typical issues concerning multi-infeed configurations are: need for coordination of the recovery control, need for different DC modulation strategies to stabilize the system, possibility of voltage instability of the area receiving large amount of power from multiple HVDC links and the risk of mutual...
In this paper, dynamic phasor method has been applied to HVDC transmission system and FACTS device modeling. A hybrid-model simulation algorithm is suggested for transient stability analysis with HVDC transmission system and FACTS devices in dynamic phasor models and other AC system elements in electromechanical models. Computer test results show clearly that the proposed hybrid-model simulation algorithm...
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