Given the single phase 3-wire residential distribution system shown below: Distribution" circuit (Primary) Earth ground (Secondary) Distribution transformer 110V 110V Other residences "Hot wire" 13, 110-V appliance Ground wire 110-V appliance "Hot" wire 110-V lights 110-V lights Residence 220-V appliance Case 1: If all the lights and the 110-V appliances and the 220-V appliance are turned on so that 1₁1; 11510° Amperes and 1, 810° Amperes a) Calculate the current in the grounded neutral wire. b) Calculate the primary current assuming its voltage is 2400 V and the transformer is lo s lossless Case 2: If all the lights and the 110-V appliances are on and the 220-V appliance is off so that 1-1-1-5L0 Amperes and 1 31.0 Amperes and 1-0. Calculate the current in the grounded neutral wire

Given the single phase 3-wire residential distribution system shown below: Distribution" circuit (Primary) Earth ground (Secondary) Distribution transformer 110V 110V Other residences "Hot wire" 13, 110-V appliance Ground wire 110-V appliance "Hot" wire 110-V lights 110-V lights Residence 220-V appliance Case 1: If all the lights and the 110-V appliances and the 220-V appliance are turned on so that 1₁1; 11510° Amperes and 1, 810° Amperes a) Calculate the current in the grounded neutral wire. b) Calculate the primary current assuming its voltage is 2400 V and the transformer is lo s lossless Case 2: If all the lights and the 110-V appliances are on and the 220-V appliance is off so that 1-1-1-5L0 Amperes and 1 31.0 Amperes and 1-0. Calculate the current in the grounded neutral wire

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.45P: Figure 3.39 shows a oneline diagram of a system in which the three-phase generator is rated 300 MVA,...

See similar textbooks

Similar questions

Substations have the functions of: Transmission Elevator, Subtransmission Lower and Distribution, according to their purpose. The common characteristic of the types presented is their objective, which is to modify the characteristics of electrical energy. Substations have sets of conductors, equipment and devices, and with these sets they work to ensure performance and safety in the electrical distribution system. Substations are also responsible for switching, protection, voltage and current transformation, reactive compensation to direct the power flow and enable its diversification through alternative routes, or a combination of these in the Electric Power System (SEP) . Describe the role of substations in the distribution of electricity, and what is their relationship with the primary and secondary distribution, describing the consumers of these demanded loads. PLEASE TYPEABLE BECAUSE THE LETTERS GET IN THE UNDERSTANDING.
5 In PV module maximum value of shunt resistance could be 200 Ohm. Select one: True False
Question 1:a) State why voltage control and cable stranding are necessary in powersystemsb) Briefly explain where and how the following state variables ofa power supply grid are controlled.i) Frequencyii) Active powerili) Reactive poweriv Voltage.
A 30-MVA alternator with 15% reactance is connected to a bus bar. A second alternator rated 25-MVA with 10% reactance is also connected through a 10% bus bar reactor to the same bus bar. Both of these reactances are based on 25 MVA. If a feeder taken out from the bus bars through a circuit breaker develops a 3-phase fault, what should be the appropriate MVA rating of the circuit breaker?(325 MVA)
What are the key factors that influence power quality in electrical grids?
A power generation plant connected to bulk load of high voltage industries shown in Figure Q3 has specifications given in Table Q3. Each equipment reactance is expressed in per unit on a common base of 100 MVA. a) Find the fault level for each bus bar in the generation plant. GI G2 TI Figure Q3: Single line diagram of a power generation plant Table Q3: Specifications of power system components Power System Component Voltage Rating X MVA Rating (kV) (pu) GI 50 33 0.2 G2 40 33 0.18 50 33/11 0.1 T2 40 33/11 0.1
Using Superposition Method. Determine the voltages at the 5-ohm resistordue to the 24-Volt, 38-Volt and 4-Ampere Sources. Also, what is the totalvoltage at the said resistor? Remember: Voltage sources are shorted andcurrent sources are opened (removed) during individual source analysis
Problem 1 - Series en Parallel AC networks [19] Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total Impedance. (c) Total Current (l:). (d) Current (I1) through impedance Z2. (e) Current (12) through impedance Z3. (f) Current (I3) through impedance Z4. (g) Is this an inductive or capacitive circuit? A. B Zs 220V;50HZ Figure 1 (h) Voltage across Z1. (i) Voltage across A and B. G) Voltage across Zs. Z1 = 3 + j5 ohm Z2 = 10 + jo ohm Z3 = 5 + j15 ohm Z4 = 10 – j30 ohm Zs = 20 – j30 ohm Admittance and Impedance in rectangular notation. All currents and voltage in polar notation. Take voltage as reference.
From figure below, if 3 phase bolted fault occurs. Using Zbus method to choose a suitable rating of C.B's. Data are as follows: Gl: 100 MVA, 22 Kv,Xgi" = 0.2 pu G2: 100 MVA, 22 KV, X2"=0.15 pu TR1: 100 MVA, 22/220 KV, XTr1 =0.1 pu TR2: 100 MVA, 22/220 KV, XTR2 =0.1 pu CB TR1 1 ZTL-J50 ohm TR2 св св G2 3 Zload =(0.2 + j0.1) pu CB
d.1. What are the two concepts that make up grounding in its simplest form?A. Impedance and resistanceB. System grounding and equipment groundingC. DC systems and AC systemsD. Grounded and ungroundedd.2. Which of the following types of grounding electrodes was one of the first grounding electrodes to berequired for use?A. Ground ringB. Water pipeC. Concrete-encasedD. Rod and piped.3. What is the primary purpose of the National Electrical Code?A. To serve as a training manual for untrained personsB. To provide design specifications to professionalsC. To act as a collection of procedures for electriciansD. To safeguard against electrical hazards
Discuss the role of power system protection in ensuring the safety and reliability of electrical grids.
In a power system the fault is occurred in all the lines and to the ground without fault impedance at bus-2 and it is found that the positive sequence fault current as j2.15. According to you what could be the current in Phase-A at bus -2? Select one: O a. -j2.15 O b. Infinity O C. +j2.15 O d. 0