Energy Systems 244 - Chapter 5.2 - 5.7

Describe long line transmission networks:

• Draw the circuit

• Derive equations for the parameters A, B, C and D

• 
  

State the equations for the parameters of:

• short lines

• medium lines

• long lines

• lossless lines

Describe the conversion of a nominal pi circuit of a long line to an equivalent pi circuit:

• Draw the equivalent pi circuit

• derive the equations of the circuit:

  • parameters

• 
  

For a lossless line, describe surge impedance:

• conditions

• z

• y

• Z_c

• gamma

• beta

For a lossless line, describe the ABCD parameters:

• state the equations of A, D, B and C

For a lossless line, describe the equations of a the equivalent pi circuit:

• Z’

• Y’

• state the units

For a lossless line, describe the wavelength:

• its definition

• Equations for:

  • V(x)

  • I(x)

  • $$\lambda$$

Describe Surge impedance loading:

• its definition

• draw a lossless line terminated by its surge impedance

• equations for:

  • V(x)

  • I(x)

  • S(x)

  • SIL

Describe Voltage profiles:

• where they come from

• Draw the voltage profiles for:

  • no load

  • at SIL

  • short circuit

  • full load

Describe the Steady-State stability limit:

• conditions

• Equations for:

  • I_R

  • S_R

  • real power

  • P in terms of rated voltages and P in terms of per unit voltage

  • P_max in terms of per unit voltages

• steady-state stability limit

• transmission line loadibility curve

Describe maximum power flow in a lossless line:

• derive the equations for:

  • I_R

  • S_R

  • P_R

  • Q_R

  • P_Rmax

Describe line loadbility:

• practical line loadibility

Describe reactive compensation techniques:

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