H.W 6: For the systom shown, determeine the fauttt level andshort cerint current for a 3-phase fault at theof The linee.middle ofoneのC)Vo.2 P.ut02p.uikV132 ICV=110 p.u132KVAssume all reactances of generatos and transfeona 10%u kV at aen's.oncommon base, Sb- 50 MVA,

Reactances of generators and transformers are 10% Pv Now diagram can be drawn as below :

H.W 6: Eor the systom shown, determeine the fault level and 3-phase fault at the short ecrcint ceervent fe a middle ofone of The lines. Vo.2 P.u Jo-2P.U V6=132 kV =110 p.u 132 ICV 132KV Assume all reactances of generatos and frausta common base, Sb= s0 MVA, on u kV at aen's.

H.W 6: Eor the systom shown, determeine the fault level and 3-phase fault at the short ecrcint ceervent fe a middle ofone of The lines. Vo.2 P.u Jo-2P.U V6=132 kV =110 p.u 132 ICV 132KV Assume all reactances of generatos and frausta common base, Sb= s0 MVA, on u kV at aen's.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter8: Symmetrical Components

Section: Chapter Questions

Problem 8.11P

See similar textbooks

Related questions

Q: a) Draw the sequence network and calculate the sub-transient fault current for a dead short circuit…

Q: 50 MVA, II KV generator has star point grounded with (112) resistance the positive, nagative and…

Q: The one line diagram of the system and data: Gl and G2:reactance=0.2 p.u ,11kv, 100MVA T1 and T2:…

Q: The sample power system subjected to three phase fault at bus 4. The system values are given below…

A: Find explanation below

Q: Q3/A/ Fill in the blanks: 1. The most common type of 3-phase unsymmetrical fault is 2. In a balanced…

A: The solution is given below

Q: Q6/ A 3-phase, 50Hz synchronous generator having H=6 MJ/MVA is delivering power of 1.0 P.U to…

A: Critical clearing angle:- It is load angle at which fault is clear and system will stable, without…

Q: A three-phase fault with a fault impedance Zf = j0.16 per unit occurs at bus 3 in the Figure beside,…

A: The answer is 2. Please fill answer only 2.

Q: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

A: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

Q: Q5. Using neat circuit diagrams explain the working of following: (i) Earth fault/leakage protection…

A: (i) Earth fault/leakage protection of transformer normally having of a partial breakdown of winding…

Q: The L/C ratio for 132 KV and 400 KV lines are typically 160x10% and 62.5x10 respectívely. The…

A: (2) Given, The L/C ratio for 132 kV line is 160*10^(3) and the L/C ratio for 400 kV line is…

Q: For the equivalent circuit diagram shown below, find fault current If in terms of their fault…

A: Given fault is line to line or double line fault between phase b and phase c. During Pre fault…

Q: Problem 6.2: A 3000 kVA, 3-phase transformer bank steps down line voltage from 12.5 kV to 480 V. The…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: given >=0.3j, z=0·2j, z = 0.15. Find: All Voltages and current for single - Line to ground A11 fault…

Q: Under Unbalanced Condition Without Faults: a. Load Line Currents (Ia, Ip,I); b. Load Line Voltages…

A: We are authorized to answer three subparts at a time. Since you have not mentioned which part you…

Q: For the network shown in the figure below, all reactances are in p.u. to a base of 100MVA and 13.8…

A: The power system is a network consist of power generation, transmission, and distribution. Power…

Q: When working with balanced three-phase circuits, per-phase analysis is commonly done after…

A: Consider that in case of the three phase system, there is no voltage in the neutral point and hence,…

Q: Please solve the following problems show a step by step solution. Use four decimal places. Use the…

Q: From the system as shown below with base of 100 MVA by neglecting all parallel admittance. (a)…

A: I am considering that given values are impedances and Iam calculating the diagonal and off diagonal…

Q: The single line diagram of a power system is shown below. Load represented as impedance, (13.2) kV…

A: Given: The single line diagram of a power system is shown below: Load represented as impedance,…

Q: 12500kva load is supplied at a power facter of 0.8 lagging by a 3 phase transmissiom line whose…

A: We can draw the power system as here load is PR+jQR=12500×0.8 kW+j12500×0.6kVAR=10000kW +j 7500kVAR…

Q: A 5-MVA, 13.8 kV/480 V, 5% impedance transformer is tapped at 13.8 kV line where the Thevenin’s…

Q: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

A: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20…

Q: 2) A transmission line is feed from local end A and remote end B. The impedance of the whole…

A: Given Transmission line with impedance Zl=5+j20 ΩThe impedance from relay point A to the fault point…

Q: The one line diagram of the system and data: Gl and G2:reactance=0.2 p.u ,11kv, 100MVA T1 and T2:…

A: Fault analysis- Transmission line are represented using series reactance. So, series resistance of…

Q: The one line diagram of the system and data: Gl and G2:reactance=0.2 p.u ,11kv, 100MVA T1 and T2:…

A: Fault analysis- Transmission line are represented using series reactance. So, series resistance of…

Q: Figure below shows a power system where load at bus 5 is fed by generators at bus 1 and bus 4. The…

A: When line L1 has length =100 km, fault current for fault at bus 5 is =2530 A When line L1 reduced to…

Q: The one line diagram of the system and data: Gl and G2:reactance-D0.2 p.u,11kv, 100MVA T1 and T2:…

A: Fault Analysis- Transmission lines are represented using series reactance. So, the series resistance…

Q: For the power system shown below, all reactances are given to the same base 100MVA and 33 KV. A (L-D…

Q: The one line diagram of the system and data: Gl and G2:reactance=0.2 p.u ,11kv, 100MVA Tl and T2:…

Q: The zero sequence current of a generator for line to ground fault is j2.4 p.u. Then the current…

A: Given data, Zero sequence current is given Iao=j2.4 pu

Q: Consider the same 4-bus system shown. Use the tie set method to determine the reliability,…

Q: Figure below shows a power system where load at bus 5 is fed by generators at bus 1 and bus 4. The…

A: 1) When base voltage is changed to 11 kV, change in fault current ? 2)

Q: B-For the radial shown in the figure below, calculate: 1- the fault currents for the faults.: FA and…

Q: Figure below shows a power system where load at bus 5 is fed by generators at bus 1 and bus 4. The…

Q: A radial power system network is shown in figure below, a three phase balanced fault occurs at F.…

Q: Q2\ Calculate the fault current for the given system if symmetrical three-phase fault occurs at…

Q: 6) Which distance characteristic is best suitable as far as the incorporation of fault resistance is…

Q: For the radial distribution system shown below, the available utility short circuit duty is: 10 kA…

Q: Problem 1(A)- In reference to the power system shown below, the system is operating at nomina…

Q: TI T2 M 50 +j 100 ohm AY YA Lood

A: Given the two-machine system of Figure below, we select quite arbitrarily a base voltage of 161 kV…

Q: (Q.2) For the following network, calculate the fault currents (IFı, IF2, IF3 and IF.) in pu and in…

A: There will be three sequence networks in the given power system- Positive-sequence network…

Q: The one line diagram of a three phase power system is as shown in Figure 7 Impedances are marked in…

Q: The maximum supply voltage (Vm) of the single phase transmission line is 200 V and the tot impedance…

Q: X₂=0.1 1 XL +03 Soto X₁ = 0.2 X = 0.1 X = 0.1 Above is the one-line diagram of a simple power…

A: For the given one-line diagram of a simple power system. Each generator is represented by an emf…

Q: Refer to the 5-bus data given below. Sbase = 400 MVA, the base voltage is 15.0 kV for buses 1 and 3,…

A: a) Single line diagram of given power system here series parameter are in impedance and shunt…

Q: Line impedances for the power system shown in Figure 1 are Z12 = Z23 = 3.0 + j40.0 Ω, and Z24 = 6.0…

A: Any obstacle or measurement of the resistance of an electric current to the energy flow when voltage…

Q: has X 1 = X 2 = 20% and X 0 = 10%. The neutral of the generator is grounded through a reactor of 5%…

A: In this question we are asked to calculate the grounding current LLG Fault which is nothing but…

Concept explainers

Fault Analysis

In an electrical engineering system, a fault is an abnormal electric current flowing through the system, and fault analysis is the study of these faults. For instance, a short-circuit is a fault where the live wire touches the ground or neutral wire. If a circuit is interrupted by a failure of a current-carrying wire then an open circuit fault occurs. The open-circuit faults are also called series faults. One or more phases or ground may be involved in a three-phase fault or may occur only between two phases. Current flows into the earth in case of a ground fault or earth fault. For most situations, the prospective short circuit current of a fault that is predictable can be calculated. To limit the loss of service because of a failure, the protective devices can detect fault conditions and operate circuit breakers and also other devices. All phases equally can be affected in a poly-phase system which is known as symmetric electrical fault. The asymmetric fault becomes more complicated to analyze if only some phases are affected. By using methods such as symmetrical components, the power system analysis of these types of faults is often simplified. The main objective of power system protection is to design, detect, and interrupt power system faults.

Question

H.W 6: For the systom shown, determeine the fauttt level and
short cerint current for a 3-phase fault at the
of The linee.
middle ofone
のC)
Vo.2 P.u
t02p.u
ikV
132 ICV
=110 p.u
132KV
Assume all reactances of generatos and transfe
ona 10%
u kV at aen's.
on
common base, Sb- 50 MVA,

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Three single-phase two-winding transformers, each rated 25MVA,34.5/13.8kV, are connected to form a three-phase bank. Balanced positive-suence voltages are applied to the high-voltage terminals, and a balanced, resistive Y load connected to the low-voltage terminals absorbs 75 MW at 13.8 kV. If one of the single-phase transformers is removed (resulting in an open connection) and the balanced load is simultaneously reduced to 43.3 MW (57.7 of the original value), determine (a) the load voltages Va,Vb, and Vc; (b) load currents Ia,Ib, and Ic; and (c) the MVA supplied by each of the remaining two transformers. Are balanced voltages still applied to the load? Is the open transformer overloaded?
Three single-phase transformers, each rated 10MVA,66.4/12.5kV,60Hz, with an equivalent series reactance of 0.1 per unit divided equally between primary and secondary, are connected in a three-phase bank. The high-voltage windings are V-connected and their terminals are directly connected to a 115-kV three-phase bus. The secondary terminals are all shorted together. Find the currents entering the high-voltage terminals and leaving the low-voltage terminals if the low-voltage windings are (a) Y-connected and (b) - connected.
In order to avoid difficulties with third-harmonic exciting current, which three-phase transformer connection is seldom used for step-up transformers between a generator and a transmission line in power systems. (a) Y- (b) -Y (c) Y-Y
Figure 3.32 shows the oneline diagram of a three-phase power system. By selecting a common base of 100 MVA and 22 kV on the generator side, draw an impedance diagram showing all impedances including the load impedance in per-unit. The data are given a follows: G:90MVA22kVx=0.18perunitT1:50MVA22/220kVx=0.10perunitT2:40MVA220/11kVx=0.06perunitT3:40MVA22/110kVx=0.064perunitT4:40MVA110/11kVx=0.08perunitM:66.5MVA10.45kVx=0.185perunit Lines I and 2 have series reactances of 48.4 and 65.43, respectively. At bus 4, the three-phase load absorbs 57 MVA at 10.45 kV and 0.6 power factor lagging.
When working with balanced three-phase circuits, per-phase analysis is commonly done after converting loads to Y loads, thereby solving only one phase of the circuit. (a)True (b)False
A balanced three-phase source with grounded neutral has line-to-neutral voltages of 120 volts with an-bn-cn sequence. This source has an internal series impedance of 0.15+j2.0 ohms per phase. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 30+j40; Zbc = 50-j40; Zca = 65+j25 ohms. If there is a double-line-to-ground fault at lines b and c load-side, what is the magnitude of the fault current injected to the ground in amperes?
Which termination would result to a phase change of 180 degrees at the load if Zo = 100 ohm? a. 50 ohm b. short circuit c. 75 ohm d. all of these What is the purpose of impedance matching? a. maximum return loss b. maximum SWR c. maximum load power d. maximum reflection A short piece of transmission line that may be open or shorted and used for impedance matching purposes. a. converter b. decoder c. stub d. transformer
"Van = 225&angle;-320°, Vbn = 225&angle;-200°, Vcn = 225&angle;-440°" A POSITIVE PHASE SEQUENCE B NEGATIVE PHASE SEQUENCE
A balanced load with ZR = ZB = ZY = ……<00 Ω was supplied a three phase 50 Hz, 100 V between line (balanced source). A fault on phase ‘B’ causes an open circuit, which unbalanced the load as shown in Figure 4. Similarly, a fault on the load of phase ‘Y’ cause a short-circuit, which unbalanced the load as shown in Figure 5. Using complex notation determine and analyse the individual phase currents and the neutral current in both figure.
Topic analyze 3 phase circuits with balanced and unblanced load conditions
The phase voltage of a three – phase, four – wire system are: VRN = (200 + j0) V, VYN = (0 – j200) V, VBN = ( - 100 + j100) V. Show that these voltages can be replaced by symmetrical components of positive, negative and zero sequence and calculate the magnitude of each component.
A 10 MVA three phase load is to be served by a three phase transformer at aline voltage of 13.8 kV. The supply side voltage(line-line) is 138 kV. Varioussingle phase transformers are available in the warehouse but all havewindings with voltage ratings under 100 kV and current ratings under 250 A.Is it possible to serve the load using only three single phase transformers? Ifso, specify the three phase connections and the low and high voltage ratingsof the single phase transformers.