Power flow in Parallel Path
1. Without any control , power flow is based on the inverse of the various transmission line _________.
a. Reactance
b. Capacitance
c. Impedance
d. Power factor
2. The HVDC line can be used to its full _____________if adequate converter capacity is provided.
a. Dielectric capacity
b. Thermal capacity
c. Efficiency
d. Transient Stability
3. By means of controlling __________ a FACTS controller can control the power flow as required.
a. Power factor
b. Frequency
c. Impedance
d. Real power
4. By means of varying the __________ a FACTS controller can control the power flow as required.
a. Phase angle
b. Capacitance
c. Frequency
d. Power factor
Power Flow in Meshed System
1. A thyristor-controlled series capacitor can greatly enhance the _________ of the network.
a. Stability
b. power factor
c. efficiency
d. None of these
2. Thyristor-Controlled Series Reactor can adjust the ____________ flows as well as __________.
ANS: Steady-state power, damp unwanted oscillations
3. Thermal capability of an overhead line is a function of the _________ , _________, condition of the ,______________ and ______________.
ANS: Ambient temperature, Wind conditions, Conductor, Ground clearance
4. ____________ is the ability of the power system to maintain synchronism when subjected to a severe disturbance, such as a short circuit on a transmission line.
a. Transient stability
b. Dynamic stability
c. Steady-state stability
d. Frequency collapse
5. _______________ is concerned with the ability of the power system to maintain synchronism under small disturbances.
a. Transient stability
b. Dynamic stability
c. Steady-state stability
d. Frequency collapse
6. ___________is the phenomena caused if the system frequency is much lower than the nominal frequency.
a. Steady-state stability
b. Frequency collapse
c. Voltage collapse
d. Sub-synchronous resonance
7. The sub-synchronous resonance (SSR) phenomena occurs in _________resonant circuit.
a. Series
b. Shunt
c. Parallel
d. non-linear
POWER FLOW AND DYNAMIC STABILITY CONSIDERATIONS OF A TRANSMISSION INTERCONNECTION
Please , Refer above derivation Active Power and Reactive power formula of both substation and also the relation between them.
If you don't have derivation let me know in the post comment, I will upload it.
RELATIVE IMPORTANCE OF CONTROLLABLE PARAMETERS
In this I have only underlined and bold the important component that can be ask as MCQ.
• Control of the line impedance 𝑋 (e.g., with a thyristor-controlled series capacitor) can provide a powerful means of current control.
• When the angle is not large, which is often the case, control of 𝑋 or the angle substantially provides the control of active power.
1. when the shunt and series Controllers are unified, there can be a real power exchange between the series and shunt Controllers via the _______.
ANS: Power Link
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