The document discusses substations, their components, and an experiment on power system design. It defines substations as parts of the electrical generation and distribution system that transform voltage levels. There are four main types: transmission substations connect transmission lines; distribution substations transfer power from transmission to distribution networks; collector substations collect power from distributed generation sources; and switching substations switch currents without transformers. The key components discussed are busbars to distribute current, circuit breakers for protection, transformers, conductors, isolators, and insulators. The experiment aims to study these concepts through observation and calculations.
Electrical Technology was founded on the remarkable discovery by Faraday that a changing magnetic flux creates an electric field. Out of that discovery, grew the largest and most complex engineering achievement of man : the electric power system. Indeed, life without electricity is now unimaginable. Electric power systems form the basic infrastructure of a country. Even as we read this, electrical energy is being produced at rates in excess of hundreds of giga-watts (1 GW = 1,000,000,000 W). Giant rotors spinning at speeds up to 3000 rotations per minute bring us the energy stored in the potential energy of water, or in fossil fuels. Yet we notice electricity only when the lights go out!
While the basic features of the electrical power system have remained practically unchanged in the past century, but there are some significant milestones in the evolution of electrical power systems.
Distribution System Voltage Drop and Power Loss CalculationAmeen San
Distribution System Voltage Drop and Power Loss
Calculation
Comparison of Overhead Versus Underground System
Power Loss Calculation,Voltage Drop Calculation
This is the third slide set in series of Introductory course on Power Quality for undergraduates. This deals with transient over-voltages, Ferro Resonance, Over Voltage Protection, Switching Transients, Shielding
Electrical Technology was founded on the remarkable discovery by Faraday that a changing magnetic flux creates an electric field. Out of that discovery, grew the largest and most complex engineering achievement of man : the electric power system. Indeed, life without electricity is now unimaginable. Electric power systems form the basic infrastructure of a country. Even as we read this, electrical energy is being produced at rates in excess of hundreds of giga-watts (1 GW = 1,000,000,000 W). Giant rotors spinning at speeds up to 3000 rotations per minute bring us the energy stored in the potential energy of water, or in fossil fuels. Yet we notice electricity only when the lights go out!
While the basic features of the electrical power system have remained practically unchanged in the past century, but there are some significant milestones in the evolution of electrical power systems.
Distribution System Voltage Drop and Power Loss CalculationAmeen San
Distribution System Voltage Drop and Power Loss
Calculation
Comparison of Overhead Versus Underground System
Power Loss Calculation,Voltage Drop Calculation
This is the third slide set in series of Introductory course on Power Quality for undergraduates. This deals with transient over-voltages, Ferro Resonance, Over Voltage Protection, Switching Transients, Shielding
Design of substation (with Transformer Design) SayanSarkar55
This ppt is made for the subject Machine Design. Here the basic types, equipment, designs of substation is described with the preocess and calculation of designing a transformer also.
Introduction, Factors affecting system planning, present planning techniques, planning models, Sub-transmission and substation design. Sub-transmission networks configurations, Substation bus schemes, Distribution substations ratings, Service areas calculations, and Substation application curves, future trends in planning, systems approach, and Distribution automation.
Design of a generating substation with the description of designing a transformer. Here we show some basic components of a substation. and we also show the parameters and calculation to design a transformer of a specific ratings.
Generation of High D.C. Voltage (HVDC generation)RP6997
Generation of high dc voltage using different methods like half wave and full wave rectifier, voltage doubler circuits, voltage multiplier circuits, cockcroft-walton circuits and van de graaff generators.
This directional over current relay employs the principle of actuation of the relay....It has a metallic disc free to rotate between the poles of two...
Power System Simulation Laboratory Manual Santhosh Kumar
Date:-(13-07-2016)
Hii friends
I Have Attached Our Power System Simulation Laboratory Manual Here for your Reference
Kindly download the Manual and Start Writing the Observation Note By Mr.G.Shivaraj-AP/EEE
Please follow it friends✌
With Happy,
Šαηтн๑zzζzz
Design of substation (with Transformer Design) SayanSarkar55
This ppt is made for the subject Machine Design. Here the basic types, equipment, designs of substation is described with the preocess and calculation of designing a transformer also.
Introduction, Factors affecting system planning, present planning techniques, planning models, Sub-transmission and substation design. Sub-transmission networks configurations, Substation bus schemes, Distribution substations ratings, Service areas calculations, and Substation application curves, future trends in planning, systems approach, and Distribution automation.
Design of a generating substation with the description of designing a transformer. Here we show some basic components of a substation. and we also show the parameters and calculation to design a transformer of a specific ratings.
Generation of High D.C. Voltage (HVDC generation)RP6997
Generation of high dc voltage using different methods like half wave and full wave rectifier, voltage doubler circuits, voltage multiplier circuits, cockcroft-walton circuits and van de graaff generators.
This directional over current relay employs the principle of actuation of the relay....It has a metallic disc free to rotate between the poles of two...
Power System Simulation Laboratory Manual Santhosh Kumar
Date:-(13-07-2016)
Hii friends
I Have Attached Our Power System Simulation Laboratory Manual Here for your Reference
Kindly download the Manual and Start Writing the Observation Note By Mr.G.Shivaraj-AP/EEE
Please follow it friends✌
With Happy,
Šαηтн๑zzζzz
Modelling and Simulation of DC-Motor Electric Drive Control System with Varia...IDES Editor
This work represents a mathematical analysis and
simulation of dc-motor electric drive control system with
variable moment of inertia. A separately-excited dc motor is
used in this control system. A mathematical model for this
motor has been simulated and tested in Matlab/Simulink. A
closed-loop control system for this dc electric drive system is
proposed. The proposed control system is based on the
technical optimum method of design. The controlled variable
of this system is the load angular speed. In this control system
the moment of inertia is considered to be variable. It varies as
a function of time. A speed controller and a current controller
are designed for the suggested model to meet the desired
performance specifications by using the technical optimum
method. These controllers are attached to the control system
and the closed-loop response is observed by simulation and
testing this model. The results show the high-performance of
the designed control system.
A brief about 33kv Substation........
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Presentation made at the Nigerian Institution of Electrical & Electronics Engineers (NIEEE) Lagos Chapter. This article gives the reader the basic knowledge of what sub-stations are, how they are designed and the factors considered at the design stage as well as the various protections used at sub-stations.
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions.
Similar to Lab manual psd v sem experiment no 7 (20)
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1. STANI MEMORIAL COLLEGE OF ENGINEERING & TECHNOLOGY
POWER SYSTEM DESIGN LAB
EXPERIMENT NO. 7
Aim: - Substations: Types of substations, various bus-bar arrangements, and Electrical equipments for
substations.
Apparatus Requirements: - Circuit Breaker, Insulator, Power Transformer, Conductor, Bus-bar,
Power supply.
Theory: - A substation is a part of an electrical generation, transmission, and distribution system.
Substations transform voltage from high to low, or the reverse, or perform any of several other important
functions like switching’s of lines, change in power factor etc. Electric power may flow through several
substations between generating plant and consumer, and its voltage may change in several steps.
A substation that has a step-up transformer increases the voltage while decreasing the current, while a
step-down transformer decreases the voltage while increasing the current for domestic and commercial
distribution. The word substation comes from the days before the distribution system became a grid.
TYPES OF SUBSTATIONS:1. TRANSMISSION SUBSTATION: - A transmission substation connects two or more
transmission lines. The simplest case is where all transmission lines have the same voltage. In
such cases, the substation contains high-voltage switches that allow lines to be connected or
isolated for fault clearance or maintenance. A transmission station may have transformers to
convert between two transmission voltages, voltage control/power factor correction devices such
as capacitors, reactors or static VAR compensators and equipment such as phase shifting
transformers to control power flow between two adjacent power systems.
2. DISTRIBUTION SUBSTATION: - A distribution substation transfers power from the
transmission system to the distribution system of an area. It is uneconomical to directly connect
electricity consumers to the main transmission network, unless they use large amounts of power,
so the distribution station reduces voltage to a value suitable for local distribution.
2. 3. COLLECTOR SUBSTATION: - In distributed generation projects such as a wind farm, a
collector substation may be required. It somewhat resembles a distribution substation although
power flow is in the opposite direction, from many wind turbines up into the transmission grid.
Usually for economy of construction the collector system operates around 35 kV and the collector
substation steps up voltage to a transmission voltage for the grid. The collector substation can also
provide power factor correction if it is needed, metering and control of the wind farm. In some
special cases a collector substation can also contain an HVDC static inverter plant.
4. SWITCHING SUBSTATION: - A switching substation is a substation which does not contain
transformers and operates only at a single voltage level. Switching substations are sometimes used
as collector and distribution stations. Sometimes they are used for switching the current to back-up
lines or for parallelizing circuits in case of failure.
BUS-BAR: - Bus-bars are conductor from which many tapings can be taken to connect the different lines.
Current and Voltage along with its whole length are same i.e. constant.
In GSS mainly, two types buses are provided one bus is called "MAIN" bus and the other "AUXILIARY"
or "TRANSFER" bus. Incoming or Outgoing feeders are connected from these buses. The Main buses
remains in work permanent and the Auxiliary or Transfer bus works in failure condition of main bus.
ELECTRICAL EQUIPMENTS FOR SUBSTATION
1. CIRCUIT BREAKER: - A circuit breaker is an automatically operated electrical switch
designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic
function is to detect a fault condition and, by interrupting continuity, to immediately discontinue
electrical flow. Unlike a fuse, which operates once and then has to be replaced, a circuit breaker
can be reset (either manually or automatically) to resume normal operation. Circuit breakers are
made in varying sizes, from small devices that protect an individual household appliance up to
large switchgear designed to protect high voltage circuits feeding an entire city.
Oil Circuit Breaker (OCB)
Air-Blast Circuit Breaker (ABCB)
Sulphur Hexafluoride Circuit Breakers (SF6)
Vacuum Circuit Breakers (VCB)
2. TRANSFORMER: - A transformer is a device that transfers electrical energy from one circuit to
another without changing the frequency. A varying current in the first or primary winding creates
3. a varying magnetic flux in the transformer's core and thus a varying magnetic field through the
secondary winding. This varying magnetic field induces a varying electromotive force (EMF), or
"voltage", in the secondary winding. This effect is called mutual induction.
3. CONDUCTORS: - The conductor is a very essential part of transmission and distribution system
of electrical power, the cost of the conductor material accounts for a major part of the total cost.
So proper choice of conductor material and size of the conductor is of utmost importance.
4. ISOTATORS: - Isolator or a dis-connector switch is used to de-energise an electrical circuit for
maintenance purpose. It is an off load device. They are not equipped with arc quenching devices.
Isolators are employed in addition to circuit breakers, and are provided on each side of every
circuit breaker to provide isolation. While opening a circuit, if the circuit breaker is opened
carelessly, when carrying a heavy current, the resulting are could easily cause a flash over to
ground. This may shatter the supporting insulators and may even cause a fatal accident to the
operator. While closing a circuit, the isolator is closed first, then the circuit breaker.
5. INSULATOR: - An insulator, also called a dielectric, is a material that resists the flow of electric
charge. In insulating materials valence electrons are tightly bonded to their atoms. These materials
are used in electrical equipment as insulators or insulation. Their function is to support or separate
electrical conductors without allowing current through themselves. The term also refers to
insulating supports that attach electric power transmission wires to utility poles or pylons.
Circuit Diagrams:-
Figure 7.1 Bay of Bus bar
4. Figure 7.2 Typical Single bus arrangements
Precautions:1) Do not touch any live conductor.
2) Please keep distance from electrical equipments because voltage level very high i.e. 132
kV, 220 kV, and 400 kV.
Procedure:-
6. Viva- Voice:Ques. 1 Name of different types of Substation.
Ques. 2 What is the functioning of Switching Substation?
Ques. 3 Types of Bus-Bar used in Substation?
7. Ans 1. Transmission Substation,
Distribution Substation,
Collector Substation,
Switching Substation
Ans 2. A switching substation is a substation which does not contain transformers and operates only at a
single voltage level. Sometimes they are used for switching the current to back-up lines or for
parallelizing circuits in case of failure.
Ans 3. Two Types arrangements of bus bar are used in substation: MAIN bus bar and AUXILIARY bus
bar.