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A logssless transmission line having Sure Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be
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- 1835 MW
- 2280 MW
- 2725 MW
- 3257 MW
Correct Option: B
There will not be any effect on active power of capacitve compensation
∴ SIL = 2280 MW 
Alternately
Series reactance after series compensation
| ZC2 = jωL - | = jωL |  | 1 - |  | = jωL |  | 1 - |  | |||
| jωCse | Ω²LCse | XL |
The ratio, γ = Xse/XL se is called degree of series compensation.
Without compensation,
| (SIL)1 = | , ZC = jωL | |
| Zc1 |
With series compensation,
| (SIL)² = | ||
| Zc2 |
| (SIL)2 = (SIL)1 × = | ||
| Zc2 |
| = | ||
| √1 - γ |
| = | ||
| √1 - 0.3 |
= 2725 MW
