b. Generator 1 and Generator 2 operating in parallel, supply the step-up power transformer via cables each having impeda

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B Generator 1 And Generator 2 Operating In Parallel Supply The Step Up Power Transformer Via Cables Each Having Impeda 1 (102.74 KiB) Viewed 46 times

b. Generator 1 and Generator 2 operating in parallel, supply the step-up power transformer via cables each having impedance of (1.5 + j2.5). The power transformer has a rating of 30 MVA with an impedance of 0.05 pu. Determine the fault level and the fault current available at the terminals of i. ii. iii. iv. Generator 1 Generator 2 Station bus supplying the transformer The secondary terminals of the transformer Consider the following Scenario: East Kingston Power Company has its power plant located at Bournemouth Beach Park. The power plant has two (2) diesel generating sets, generator 1 is a 3 ph, 30 MVA, 12 kV and generator 2 is a 3 ph 50 MVA, 12 kV. They both have per unit impedances of 0.1 and 0.12 respectively. The plant operates these sets in parallel to supply power to East Kingston and East Rural St. Andrew. Question 3 (83 marks) From the transmission substation located at the plant an overhead three (3) transmission line supplies a distribution substation at Harbour Head (HH) (in the vicinity of the Harbour View roundabout). The three-phase transmission line from Bournemouth Beach Park to Harbour Head is 80 km long. It has a resistance and inductance per phase per kilometre of 500 m and 2.5 ml respectively, and a capacitance 1.3 uF. If the line delivers 30 MW at 0.9 p.f. lagging: a. The HH substation provides two overhead three (3) phase distribution feeders, one feeds Bull Bay and the other feeds Palisadoes Park (PP), the Norman Manley International Airport (NMIA), and Port Royal (PR). Determine the sending end voltage, current, power and efficiency using the following medium-line methods: i. the nominal T method ii. the nominal TT method b. Draw the phasor diagram using the nominal T method