1. Power flow analysis with VSC based HVDC system
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU

2. Power flow analysis with VSC based HVDC system
the fig shows VSC connected to the AC network.
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU

3. UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU
ACTIVITY
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU

4. UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU
the solution of the DC network is similar as described earlier class. In a multi terminal system with ‘n’ terminals, one of the terminals Pd is specified. The only difference is that in a VSC, there is no commutation resistance to be modeled.
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU

5. UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU
Problem formulation
let as consider an AC/DC power system of ‘n’ lines in AC system and
‘m’ terminals in DC system.
Let the nth bus be chosen as the reference bus(with bus angle equal to
zero)
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU

6. UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU
Thank you
UNIT5/HVDC/POWER FLOW ANALYSIS IN AC/DC SYSTEMS/C.K.GOBU