Question

5. The active power transmitted by the heavy load line is very large, and in practice, the voltage amplitude of each point of the line is generally required to be within £ 5%, and the difficulty of transmitting the reactive power at this time is analyzed. (Hint: start with the characteristics of the phase angles on both sides of the heavy load line) Combine the other angles (such as, but not limited to, line losses) to analyze the balance of reactive power on-site instead of long-distance large-capacity transmission.

Answer 1

a Etive power Reactive power is the resultent power in watts of an Ac circuit when the current waveform is out of phase with the wave form of the voltage usally by 90 degrees if the Load is purely reactive and is the result of either capacitive corl inductive Loads → Reactive power symbol (2), active power symbol (P) s only when current is in phase with voltage is there actual work done, such as resistive Loads on voltage Power out of phase on voltages current f current reactive power (2) - power triangle apperent power (5) where S. Up²62 Active power (P)

obiective-1 maximum power flow with minimum line fosses q maximum efficiency: shoot line (Assume RLEXL) VRLO IVILS PR @x70 I IXL 56 = P tjes SR = PRIJOR IAID = 1 LO = 10/2 2 18) LE = x, 196 ,c=0J-0 substute-10 in PR, ar PG, as Per la el cos (8-5) - jan te c05 (84) hoteles en-s) - 1 | Cos (0- la sos pe - 1976 se χι I PR= P3 Torres

Relations blw Powers, vollages & ABCD parameters of the Toanstmission lines Vold SR=Rptixa SP = PRISOR Jose 5o = Rotixs 55 = Potras consider A=1 Al La B = 1811B c = lelle D = lolla = A=D & AD BC = 1 o tgh at OA) 2) + va = V=Vol & VR = 1VRILO Glav 9 101 10 Receving end power 2 1 Vg= AURIBIR IR = VS-AVR - B - 01922 IR = Ivolls - IAILL lvolle IBILB B) te - pag 10-8 - Avallend – @ B (1 SR = PR ti o R = VR. I h - ③ sub Din 6 PRESOR = | SUR LA-d - 1 AUR | LB-2

- equation Separate real and imaginas y PR - ) (06 (P-6) - Ave" cos (B-a) Superhero y sin (4-6) - Layesin (pd) fransh obiective - 1 maximum a short line Sending and power (Assum SIMA E Is = CURT DIR sub 0 in 0 IVILS Ig 16 = cvet o su may o 55 = ls = OV + 1BC-ABUR S B B = 10118 Nolla - Vall 18) LL IBILE 50 15* - 1 box / 18-4-8-M) . 56 = Potious = 1 Vs) 15. I 6. 60b in Potious - 1 by 2 / 12-2 - 1U SVB) pts sepercate Real e imag post heavy load Po o o X * |cos (fa) - Iva ve 105 (8+8) os pola sincos) - Jon (918) angle ore it has applicable transmission I Line on phase also (Bnd langle applicalde