It will be important for the operation of future multi-terminal HVDC systems that each converter unit is capable of limiting the influence of nearby AC faults on the DC grid. Thus, the local control systems at each terminal should be able to prevent double frequency active power oscillations...
The ashes from the two agricultural residues barley straw and barley husk were characterized by applying a combination of different analytical methods. The two ashes are rich in K, Si, P, Ca, K with small amounts of Mg, Al, S and Cl. K bearing silicates and phosphates mineral phases were...
This paper presents a novel adaptation of the equal-area criterion. The adapted criterion provides a new possibility to study the stability criteria of critical power transfer corridors, supporting the specification of the secure power transfer capacity of the interconnected power system...
This paper elaborates a concept for designing efficient large scale hydrogen liquefaction plants, based on dividing the process into 4 independent stages and finding the optimum solution for each stage. The main focus is put on the precooling stage. Not because of its power consumption, but because...