Advanced Power Systems-Tutorial-9.pdf - EEET2403 Advanced Power Systems Tutorial 9 Power Market Operation Question1 Fig.Q1 shows two regions A and B

Advanced Power Systems-Tutorial-9.pdf - EEET2403 Advanced...

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1 AV /2018 EEET2 403 Advanced Power Systems Tutorial 9: Power Market Operation Question1 Fig.Q1 shows two regions A and B linked by a transmission line. What are the Locational Marginal Prices (LMP) at A and B when (a) the line has no limit on its transfer capability; (b) the line has a transfer capability limit of 200 MW. Fig. Q1 [Ans: (a) $20/MW, (b) $35/MW] Question 2 Two generators supply power to the three-bus system shown in Fig.Q2. The reactances of the three lines in pu based on 1000 MVA base and 500 kV base are shown in the diagram. It also shows the generator limits and their offer prices. (a) Considering the “DC Power Flow” equations, derive equations for the line power flows P 13 (from bus-1 to bus-3), P 12 (from bus-1 to bus-2) and P 23 (from bus-2 to bus-3) in terms of the line reactances and the bus angles, δ 1 , δ 2 and δ 3 . Hence, show that 12 23 13 2 P P P + = (b) Assuming that the lines have no limit on their power carrying capability, determine the generation schedule with the lowest cost. Obtain the LMP at all three buses. Determine the power flows in all three lines.
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