INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
Dept. of Elec trical & Electronics Engineering
CASE STUDIES
PROJECT COMMISSIONING
DESIGN OF ELECTRICAL SYSTEMS FOR LARGE PROJECTS INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
Course Plan
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
COURSE PLAN INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
Academic Year
2012-13
Department
Electrical & Electronics Engineering
Programme
B Tech
Semester
VI
Course Code
EEE352
Course Title
Design of Electrical Systems
COURSE PLAN INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
MODULE-I
General introduction, Gathering specific data,Adoption of design parameters for the particular project,
Selection of basic design philosophies, detailing the electrical system, Preparation of as erected drawings & design-manuals
Maximum demand estimation-Demand factor for HV motors, Calculation of MD on the MCCs
MD estimation for an entire Load-Centre Substation & MSS, Statutory inspectors approach towards MD-estimation
COURSE PLAN INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
MODULE-II
Sizing of transformer capacity on the basis of MD calculation, Consideration & constraints in the sizing of transformer CB ratings, split bus arrangement Sizing of power, distribution transformer capacity, Technoeconomic studies on selection of transformer sizes, Sizing of transformer to meet HV motor, starts & voltage dips Short Circuit Calculations, SC analysis, Standards, Passive & dynamic reactances to be considered, reactance multipliers for 1st cycle diagram for SC analysis of 415V System The computation of AC component of fault current, determination of DC component of the fault current & total fault current IEC Equations, Impact of CB status on fault levels
COURSE PLAN INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
MODULE-III
Selection of cable size, continuous rating of cables, thermal ampacity of cables
Short time short circuit rating of cables, Mechanical withstand of SC forces
Techno-economic consideration in selection of cables, SC withstand capacity of 1.1 kV cable
Voltage drops in 415V motor, feeders & voltage drop based ampacity,
The use of copper cables for motors of rating less than 7.5 kW
INTRODUCTION INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
Introduction
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
What are Large Projects ? INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
What are ‘Large Projects’ ??
N O I T C U D O R T N I
Connected Load : 10-100 MW
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
What is LV/MV/HV/EHV/UHV ? INTRODUCTION
N O I T C U D O R T N I
SYMBOLS & ABBREVIATIONS
LV
IE RULES & REGULATIONS
DESIGN PROCEDURE
MV
SUBSTATION EQUIPMENTS
HV
CASE STUDIES
EHV
PROJECT COMMISSIONING
Plant Sub-Station SLD INTRODUCTION
N O I T C U D O R T N I
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
MSS
HV
HV Bus
EHV
EHV/HV
11or
11or
66kV
66/11kV
6.6 or
6.6 or
11or
3.3or
3.3or
6.6 or
1.1kV
1.1kV
SUBSTATION EQUIPMENTS
415V HV Motors & DT’s
1.1kV
LCSS-1
HV Bus
PROJECT COMMISSIONING
415V/230V Loads
PMCC
MCC
PCC
APFC Capacitors
11kV/415V Distribution
EB Grid
LV Bus
PLC Equipments
3.3 or
CASE STUDIES
Transformer
EHV/HV Power Transform er
MV HV Motor-1 LCSS-2
MCC
Motor-1 MV
HV Bus HV Motor-2
Motor-2
SLD of 11kV/400V Sub-Station INTRODUCTION
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
SLD of 11kV/400V Sub-Station INTRODUCTION
SYMBOLS SYSTEM & REPRESENTATION ABBREVIATIONS
IE CONTROL RULES & REGULATIONS STRATEGY
SIMULATION DESIGN PROCEDURE STUDY
EXPERIMENTAL SUBSTATION EQUIPMENTS STUDY
CASE CONCLUSION STUDIES
PROJECT REFERENCES COMMISSIONING
SLD of 11kV/400V Sub-Station INTRODUCTION
SYMBOLS SYSTEM & REPRESENTATION ABBREVIATIONS
IE CONTROL RULES & REGULATIONS STRATEGY
SIMULATION DESIGN PROCEDURE STUDY
EXPERIMENTAL SUBSTATION EQUIPMENTS STUDY
CASE CONCLUSION STUDIES
PROJECT REFERENCES COMMISSIONING
Configuration & Location of EB Sub-Station SYMBOLS & ABBREVIATIONS
INTRODUCTION
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
Small & Medium Power Demand:
N O I T C U D O R T N I
IE RULES & REGULATIONS
Through OH radial feeder from nearest substation
Large Power Demand:
EB establishes a new EHV station near the project
CASE STUDIES
PROJECT COMMISSIONING
Location of Plant Sub-Station INTRODUCTION
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
Periphery of plant area :
N O I T C U D O R T N I
SYMBOLS & ABBREVIATIONS
Adv. EHV OH lines doesn’t run over the plant area
Within the plant area :[ GIS SS ]
EB to plant periphery :
At periphery :
EHV OH line EHV OH line termination + EB metering point
From periphery – Plant SS :
EHV UG Cable feeders
CASE STUDIES
PROJECT COMMISSIONING
Plant Sub-Station SLD INTRODUCTION
SYMBOLS & ABBREVIATIONS
EHV
MSS
33kV
33/11kV
IE RULES & REGULATIONS
DESIGN PROCEDURE
HV 6.6 or 11 or 3.3 kV
HV Bus
SUBSTATION EQUIPMENTS
HV Motors & DT’s PLC Equipments
CASE STUDIES
415V LV Bus
PROJECT COMMISSIONING
415V/230 V Loads
PMCC 11kV/415V LCSS-1
HV Bus
Distribution
PCC
APFC Capacitors
MCC
MV Motors
Transformer EB Grid
EHV/HV Power Transform er
HV Motor-1 LCSS-2
HV Bus HV Motor-2
Plant Sub-Station SLD INTRODUCTION
N O I T C U D O R T N I
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
Choice of location of Load-Centre-substation so that:
LCSSs are located close to the load groups
To limit the cost of HV cabling & cable galleries PLC
LCSS-1
HV Bus
Equipments
PMCC
11kV/415V
PCC
APFC Capacitors
MCC
MV Motors
Distribution
Transformer EB Grid
EHV/HV Power Transformer HV Motor-1 LCSS-2
HV Bus HV Motor-2
4 × HV Cables
Plant Sub-Station SLD INTRODUCTION
N O I T C U D O R T N I
SYMBOLS & ABBREVIATIONS
IE RULES & REGULATIONS
DESIGN PROCEDURE
SUBSTATION EQUIPMENTS
CASE STUDIES
PROJECT COMMISSIONING
Choice of location of Load-Centre-substation so that:
LCSSs are located close to the load groups
To limit the cost of HV cabling & cable galleries
And hence we can define… INTRODUCTION
SYMBOLS & ABBREVIATIONS
CASE STUDIES
PROJECT COMMISSIONING
Main MV Switch board connected to the secondary of the distribution transformer From this, MCC’s & large 415V motors of P>150kW are fed From this 415V motor rated up to 150kW are fed
SSB : Sub Switch Board or DB: Distribution Board (or) Sub-Distribution Board
SUBSTATION EQUIPMENTS
MCC : Motor Control Centre
DESIGN PROCEDURE
PCC : Power Control Centre
N O I T C U D O R T N I
IE RULES & REGULATIONS
Incoming SF or CB & Outgoing switch fuse feeders connected rather than motorfeeders
PMCC : Combined Power & Motor Control Centre