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Q#1 Transmission and Distribution GATE EE 2015 MCQ +1 mark -0.33 marks

Consider a HVDC link which uses thyristor based line- commutated converter as shown in the figure. For a power flow of 750 MW from system 1 to system 2, the voltages at the two ends, and the current are given by:  =500 kV,   and I=1.5 kA. If the direction of power flow is to be reversed (that is from system 2 to system 1) without changing the electrical connections, then which one of the following combinations is feasible?

 and I = 1.5 kA

 and I =1.5 kA

 and I = – 1.5kA

 and I = – 1.5  kA

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