(b) Discuss the proximity transmission line conductors of power in Oman using sketch. a
Q: What is the dispersion taking place in long transmission lines? State the condition to obtain…
A: In long transmission lines frequency dispersion takes place. In which transmission lines have…
Q: Taking the dielectric strength of air to be 30 kV/cm, calculate the disruptive critical voltage for…
A: As per our policy i have attempted only one Given data: d=400 cmδ=1go=30 kV/cm(peak)=302rmsr=1 cmm=1…
Q: The diameter of the overhead lines in the form of cylindrical conductors in a 300 kV three-phase…
A: Given diameter = 20mm, Vline = 300kV. Your b subpart is not clear I assume you have asked for…
Q: (b) A transmission line conductor with weight per unit of 1.55 kg/m is installed between two towers…
A:
Q: Q4: Each conductor of a 3-phase high-voltage transmission line is suspended by a string of 4…
A: Given data, V2=13.2 KV, V3=18 KVXc= 1Ω
Q: A Parallel wire line has its radius of the conductor is 0.4 mm and the distance between the…
A: A Parallel wire line radius of the conductor is 0.4 mm the distance between the conductors is 0.4…
Q: 32. An overhead transmission line at a river crossing is supported from two towers at heights 25m…
A:
Q: Which among these is used to determine or compute for the Transmission Line AC Resistance? A.…
A: power losses = (current)2*Ac resistance where as dc resistance = resistivity×lengthcross sectional…
Q: pomy I. An overhead transmission line at a river crossing is supported from two towers at heights of…
A: Transmission Line: In electrical engineering, a transmission line is a specialized wire or other…
Q: The conductors of a three phase transmission line are symmetrically arranged in a triangle. If the…
A:
Q: Calculate the weight due to ice on a transmission line where the Total weight of conductor = 3.2…
A:
Q: 7. Two towers of height 40 m and 30 m respectively support a transmission line conductor at water…
A: The tower and transmission line diagram can be made as: Difference between level supports is: h =…
Q: 2. A 3-phase, 132 KV , 50 Hz, 100 Km, single circuit bundle conductor transmission line as shown in…
A:
Q: In transmission lines, the length of the line is small as compared with the distance of separation…
A: Transmission lines especially power lines are very long and they carry electric current over…
Q: 1/In the Transmission Line Simulator, the Transmission Line is connected in Nominal-Pi Circuit.…
A: According to the question we have to discuss about transmission line simulator,the Transmission Line…
Q: Problem 19. A single-phase power line comprises two conductors each with a radius 8.0 mm and spaced…
A: Given a single phase power line comprises two conductors with, Radius, r = 8.0 mm = 8×10-3 m Spaced…
Q: The inductive reactance of the line conductor is 64 Ω per km, then the inductance of the conductor…
A:
Q: A Parallel wire line has its radius of the conductor is 0.4 mm and the distance between the…
A: characteristic impedance=inductance of linecapacitance of line.
Q: Q1(b) Using sketch discuss the impact of following terms occurred in the transmission line…
A: Here is the answer
Q: Q3. For the Figure below, find the inductance per km of a transposed double circuit three - phase…
A: Inductance per km is determined as shown below
Q: The inductive reactance of the line conductor is 57 Q per km, then the inductance of the conductor…
A:
Q: Q2. What is the benefit of using stranded conductors in transmission systems?
A: The benefits of stranded conductors are listed below:
Q: Given a three-phase load of 125 MW at power factor of 0.8 lagging, operating at 69kV, with a…
A:
Q: A three-phase 60-hz transmission line has its conductors arranged in a triangular formation so that…
A: The conductor used is ACSR Rook, The ACSR Rook is a concentrical stranded conductor with one or more…
Q: The diameter of the overhead lines in the form of cylindrical conductors in a 380 kV three-phase…
A: Given: RMS line voltage VL=380 kV, RMS value of puncture strength of air g=302=21.21 kV/cm.
Q: What are the factors which governs the performance of transmission line?
A: There are totally 4 parameters which includes Resistance, Inductance, Capacitance and Shunt…
Q: The span between two level supports for a 132 KV overhead transmission line is 200 The weight of…
A: According to question: Total weight of 1m length of conductor is calculated as…
Q: An Overhead transmission line has a span of 115 m. Ultimate strength is 3600 Kg and factor of safety…
A:
Q: Using sketch discuss the impact of following terms occurred in the transmission line conductors: i)…
A: (i) Corona effect :- Corona is the self electric discharge of atmospheric air. If the operating…
Q: If the per-phase line loss in a 60-km-long transmission line is not to exceed 60 KW while it is…
A: Considering the given data:
Q: Calculate the weight due to ice on a transmission line where the Total weight of conductor = 3.6…
A:
Q: The inductive reactance of the line conductor is 67 2 per km, then the inductance of the conductor…
A:
Q: i) Discuss the essence of the mechanical design of a transmission line. ii) Discuss the advantages…
A: (i) Mechanical design of a transmission line (a) Height of tower The height of the tower depends on…
Q: Q. In a three phase 345 kV high-voltage overhead transmission line, the diameter of the conductors…
A:
Q: A transmission line conductor has a weight of 1.2 kg/m and the span of the line is 200 m. The…
A: Solution: weight of conductor Wc=1.2 kg/m, span of line L=200m, maximum tensile strength=8000 kg…
Q: A single phase transmission line having copper conductor of 0.775 cm2 cross section over which 300…
A: A 1-ph transmission line has, Copper conductor cross sectional area (A)=0.775 square cm. Specific…
Q: (d) Sketch and explain the transposition of 3- phase unsymmetrical transmission lines.
A: When 3 -phase line conductors are not equidistant from each other, the conductor spacing is said to…
Q: A 132 KV line with 2 cm diameter conductors is built so that corona takes place if the line voltage…
A:
Q: The horizontal component of the tension in the conductor is constant throughout the length of the…
A: In this question we will write about horizontal component of tension of conductor ....
Q: The inductive reactance of the line conductor is 53 N per km, then the inductance of the conductor…
A: Inductive reactance X= 53 ohm/km Frequency f= 50Hz Inductance?
Q: b) In your own words, define the "skin effect" in transmission lines and discuss how can it be…
A: Skin effect: The non uniform distribution of current through the conductor caused to non uniform…
Q: 1. A Single-phase, two-wire overhead line has solid cylindrical copper conductors with 2.4 cm…
A:
Q: A 115 kv line has a horizontal configuration. The distance between adjacent conductors is 9ft. What…
A: The solution can be achieved as follows.
Q: The inductive reactance of the line conductor is 68 2 per km, then the inductance of the conductor…
A:
Q: Q2: A single-phase transmission line consisting of two conductors, the radius of each conductor is…
A:
Q: Estimate the distance over which a load of 15000 kW at 0·85 p.f. can be delivered by a 3-phase…
A:
Q: Calculate the weight due to ice on a transmission line where the Total weight of conductor = 3.2…
A: Total weight of conductor = 3.2 Kg/m, Actual weight of conductor = 1.4 Kg/m Weight due to wind = 0.4…
Q: Q4] Draw the phaser diagram of sending and receiving voltages and currents across a long…
A: Long transmission line-It is defined as a transmission line with a distance of more than 250km.…
Q: What is the maximum length in km for a 1-phase transmission line having copper conductor of 0-875…
A: Single phase transmission line, Cross section area a=0.875 cm2 P=220 kW V=3500 V cos ϕ=1Efficiency…
Step by step
Solved in 2 steps with 1 images
- Subject: Electrical & Electronics Engineering Course: Power Systems Question: What is GMR and GMD? Explain your answer in case of a composite conductor.Write any four methods of voltage control and Draw the basic block diagram of AC – DC transmission system. and A transmission line has a span of length 250 m and the weight of the conductor per metrelength is 0.63 Kg. The tension in the conductor is 1250 Kg. Calculate the sag and heightabove the ground at which the conductor should be supported. Consider the groundclearance required is 13mDiscuss the principles and benefits of High Voltage Direct Current (HVDC) transmission in power systems.
- Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester through a transmission line with characteristics impedance ZL and the lighting arrester equal to the one half of ZL. Let the generator characteristic impedance be one third of ZL. Determine:(i) Calculate the current in the lighting arrester, (ii) Calculate the voltage in lighting arrester, and (iii) the value of lighting arrester resistance must be connected to transfer maximum power?An overhead line has span of 260m. The tension in the line is 1200kg while the conductor weighs 650 kg per 100 meters. Calculate the maximum SAG in the conductor. If the height of the tower is 13 meters, estimate the clearance of conductor to the ground. Draw a figure and mark values of sag, clearance, span, height of conductor etc.What are FACTS (Flexible Alternating Current Transmission Systems), and how do they enhance power system performance and control?
- Write True or False and correct the wrong statement (Ans 7. The unit nearest to the cross-arm in tower has maximum voltage across it and hence it likely to be repaired. 8. Corona losses in DC Transmission supply 10 times more than AC transmission. 9. Irregularity Factor (mv) has value of 0.9 to 0.95 in rough conductor. 10.Power losses in corona dissipated in the form of conductor vibrating. 11. The corona loss on a particular system at 50 Hz is 1 kW/Km per phase but for the same system but 60 Hz will be 1.5 kW/Km per phase. 12.If the number of poles in 3ph 11kV transmission line is 80, then we need 420 discs to suspend the conductor on these poles.Describe the role of FACTS (Flexible AC Transmission Systems) devices in enhancing the control and stability of power systems.Explain the concept of FACTS (Flexible AC Transmission Systems) devices in power systems. How do they enhance the controllability and stability of electrical grids? Provide examples of FACTS devices.
- A set of conductors is used to supply residential unit with a total load current of 60 A at a single-phase supply voltage of 230 V. What would be the minimum size of the conductor to be used to achieve at least 5% voltage drop? The total conductor length is 300 ft. ..Discuss the role of power system protection in ensuring the safety and reliability of electrical grids.Describe the concept of FACTS (Flexible AC Transmission Systems) devices and their applications in enhancing power system performance.