A 90 MVA, 50 kV three phase generator has a subtransient reactance of 12%. The generator supplies one motor over a transmission line having transformers at both ends as shown in Fig. The motor have rated input of 110 MVA 18 kV with 11% subtransient reactance. The rating of the sending end transformer, T is 70 MVA, 35 kV / 200 kV (A – Y) with leakage reactance of 18%. Transformer T2 at the receiving end has 65 MVA 25 kV/200 kV (A – Y). The leakage reactance of T2 and is 16%. Series impedance of the 20 km line is 80 ohms. Draw the reactance diagram with all reactance marked in p.u. Choose 110 MVA and 35 kV as the base values. Generator T1 Motor .... Zpu new of the Generator Zpu new of the Transformer 1
Short Transmission Line
A short transmission line is a transmission line that has a length less than 80 kilometers, an operating voltage level of less than 20 kV, and zero capacitance effect.
Power Flow Analysis
Power flow analysis is a topic in power engineering. It is the flow of electric power in a system. The power flow analysis is preliminary used for the various components of Alternating Current (AC) power, such as the voltage, current, real power, reactive power, and voltage angles under given load conditions and is often known as a load flow study or load flow analysis.
Complex Form
A power system is defined as the connection or network of the various components that convert the non-electrical energy into the electric form and supply the electric form of energy from the source to the load. The power system is an important parameter in power engineering and the electrical engineering profession. The powers in the power system are primarily categorized into two types- active power and reactive power.
Electrical Engineering _ power system analysis,
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