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Results tagged with power
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user 69954
Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (one joule per second). Use this tag where power is a primary concern for the design under discussion. Use the "low-power" tag when that applies.
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How is load forecasting profitable to power companies
Let's suppose that a power company is using a software model 'X' to do load forecasting which can predict 24 hour ahead load with a MAPE of 5%. …
- 300
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answer
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Force in electromagnetic system
I'm really confused in the following question,
The flux linkage (\$\lambda\$) and current (\$i\$) relation for an electromagnetic system is \$ \lambda = (\sqrt i / g\$ ) . When
\$i = 2 A\$ and …
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Power generator droop characterstics
An isolated 50 Hz synchronous generator is rated at 15 MW which is
also the maximum continuous power limit of its prime mover. It is
equipped with a speed governor with 5% droop. … If we consider linear droop from the generator the linear equation relating frequency to power would be
$$ f = -0.05P + Constant(K) $$
To find the constant we put f = 50 Hz at P = 12 MW (given in the …
- 300
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answer
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Voltage regulation in alternator
The voltage regulation of
alternator at 100 A load at 0.8 leading power factor is _______? …
- 300
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vote
Accepted
Force in electromagnetic system
The following curve shows the magnetic-field energy and co-energy.
On moving a small distance \$ dx \$, the current remains constant but the flux increases by an amount \$ d \lambda\$
The curve bet …
- 300
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Bus admittance matrix after the removal of reactance
The bus admittance matrix for a power system network is $$
\begin{bmatrix}-j39.9 & j20 & j20 \\j20 & -j39.9 & j20 \\ j20 &j20 &
-j39.9 \end{bmatrix} \text{pu}$$ There is a transmission line connected …
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