Two power stations, A and B, are joined with an inter-connector having an impedance of (2.1+j6) Ω/line. They are synchronized to work at 101.4kV. The voltage at power station A is advanced with an angle of 11° with respect to the voltage at power station B. They deliver power to their separate consumers as follow: Power station A: 400 MVA at a power factor of 0.92 lagging Power station B: 350 MVA at a power factor of 0.866 lagging Instructions :round of to 2 decimal places 1.Determine the real power load of power station B (MW) 2.Determine the final loading of power station A (MVA) 20.Determine the final loading of power station B if its reactive power load is controlled to be reduced by 10%.
Load flow analysis
Load flow analysis is a study or numerical calculation of the power flow of power in steady-state conditions in any electrical system. It is used to determine the flow of power (real and reactive), voltage, or current in a system under any load conditions.
Nodal Matrix
The nodal matrix or simply known as admittance matrix, generally in engineering term it is called Y Matrix or Y bus, since it involve matrices so it is also referred as a n into n order matrix that represents a power system with n number of buses. It shows the buses' nodal admittance in a power system. The Y matrix is rather sparse in actual systems with thousands of buses. In the power system the transmission cables connect each bus to only a few other buses. Also the important data that one needs for have a power flow study is the Y Matrix.
Types of Buses
A bus is a type of system of communication that transfers data between the components inside a computer or between two or more computers. With multiple hardware connections, the earlier buses were parallel electrical wires but the term "bus" is now used for any type of physical arrangement which provides the same type of logical functions similar to the parallel electrical bus. Both parallel and bit connections are used by modern buses. They can be wired either electrical parallel or daisy chain topology or are connected by hubs which are switched same as in the case of Universal Serial Bus or USB.
Two power stations, A and B, are joined with an inter-connector having an impedance of
(2.1+j6) Ω/line. They are synchronized to work at 101.4kV. The voltage at power station A is
advanced with an angle of 11° with respect to the voltage at power station B. They deliver
power to their separate consumers as follow:
Power station A: 400 MVA at a power factor of 0.92 lagging
Power station B: 350 MVA at a power factor of 0.866 lagging
Instructions :round of to 2 decimal places
1.Determine the real power load of power station B (MW)
2.Determine the final loading of power station A (MVA)
20.Determine the final loading of power station B if its reactive power load is controlled
to be reduced by 10%.
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