an impedance diagram for the electric power system as shown in fig, and all impedances per-unit on a 100MVA base. Select 20kv base voltage for generator. The three phase power and line ratings are given below. G1: 90MVA, 20kv, xg1 = 0.09pu G2: 90MVA, 18kv, x91 = 0.09pu %3D T1: 80MVA, 20/200kv, x11 = 0.16pu %3D T2: 80MVA, 200/20kv, x12 = 0.2pu %3D Line: 200kv, xtine = 120 2 Load: 200kv, S= (48 +j64) MVA. G. Line LOAD

Q: Two synchronous generators G1 and G2 are connected to a power transformer Tr and a transmission line…

A: To solve this question we 1st calculate the new value of per unit value at given base power and…

Q: Q. No. 01 [CLO1-C3]: Draw an impedance diagram for the electric power system shown in Figure-1,…

A: We can obtain the impedance diagram by using below steps: -  The base voltage VBG1  on the LV side…

Q: The three-phase power and line-line ratings of the electric power system shown in Figure-1 are given…

A: Given: G1:82 MVA 30 kV X=10% T1:72MVA 30/300 kV X=11% T2:72MVA 300/30 kV X=11% M:62MVA 25 kV X=9%…

Q: Power Transmission and Distribution,Basic Concept in power System.I would like to understand the…

A:

Q: Q1) A system consists of two generators. Data of these generators as follow GI has 30 MW capacity…

A: Answer (A) From the data of G1 which is having 30 MW capacity  and the failure rate is 0.38day and…

Q: Vbase_zone1 = 22 kV Sbase_zonel . Generator: . = 100 MVA ● Zone 1 1 100 MVA 22 kV (0.1+ j0.5) pu 1…

A: Given SLD: Ratings:   Generator: Power rating=100MVA Voltage rating=22 kV Per unit impedance,…

Q: Draw the per-unit reactance diagram of the system shown in Figure Q1. Assumed base values are 100…

A:

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.