- Course at a Glance
- Code: CEY1
- Course Length: 3 Months
In this interactive 3 month LIVE ONLINE course, you will learn how to:
- Calculate substation capacity based on load requirements and decide upon a suitable location
- Select a suitable configuration of the substation and size the main equipment
- Plan for appropriate system studies and draw up a specification for system studies
- Decide on the layout of an outdoor HV switchyard showing main and auxiliary equipment
- Choose equipment for fault limiting, VAR compensation and harmonic control and adjust the switchyard layout to include these systems
- Plan indoor substations with medium voltage switchgear and select the required equipment ratings
- Work out a suitable layout for the MV switchgear and associated equipment
Contact us for future course dates.
Depending on the functions performed by a substation, the configuration and complexity can be quite varied. The skill of the designer is to anticipate the present and future needs that the substation will cater to, select appropriate design configuration and calculate the ratings of main equipment such as busbars, transformers and switchgear so as to ensure trouble free service over a number of decades. Sufficient thought should be given to the need for maintaining critical substation equipment and appropriate redundancies must be planned as well. This is essential as otherwise the consumers fed by the substation can suffer frequent supply outages, which is undesirable from service as well as financial point of view.
It is also necessary to ensure that the substation will work satisfactorily under various normal and not-so normal situations (such as short circuits and other types of abnormal events which can occur in a system) without any failures. This is done by means of various calculations which are performed to reflect a set of simulated conditions. These calculations are collectively called as system studies. The type of studies will depend upon the complexity and criticality of the substation and the loads connected to it. The simulations are carried out using specialised computer software. A designer should have clear understanding of the studies that need to be performed in a given case and should also be able to decide the conditions that are needed to be simulated for each study.
System studies can often bring out problem areas in the design. These need to be addressed by appropriate solutions involving equipment for voltage improvement, fault limiters and flicker compensation. Modern industries give rise to sizeable harmonic components which can result in premature equipment failures by heating and sometimes by harmonic resonance. Harmonic filters and other measures to inhibit resonance will have to be planned in such cases. These studies, when performed at the design stage, permit the designer to include the required corrective equipment proactively and integrate them with the rest of the system by providing proper space and switchgear as a part of the substation design, rather than as an afterthought.
These complex issues will be dealt in this program using a simple step-by-step approach through real life examples. At each step, the basic design approach and calculations will be performed by the students to clearly understand the concepts that are being taught.
MODULE 1: ROLE OF SUBSTATIONS IN AN ELECTRICAL NETWORK, TYPES AND CONFIGURATIONS OF SUBSTATIONS
Substations as network nodes
Substation types based on their position in the network
Optimising the location of a substation
Configurations of HV substations based on their bus arrangement (typical SLD)
Data on the industrial loads required for the design of the electrical supply substation
Load assumptions for residential and commercial consumers
Environmental issues in the location of a switchyard and mitigation measures
Planning permit and zoning regulations
MODULE 2: EXAMPLES/CASE STUDIES OF SUBSTATION LOCATION AND SELECTION OF CONFIGURATION
Using a given set of data of loads and locations: perform the design of a typical HV substation and develop a suitable configuration, develop the single line diagram, calculate the current rating of busbars and feeders, perform busbar conductor sizing calculation
MODULE 3: SYSTEM STUDIES REQUIRED FOR FINALISING EQUIPMENT RATINGS
Load flow study (active/reactive loads)
Short circuit study
Voltage profile and reactive power compensation
Other calculations normally performed for substation design
MODULE 4: EXAMPLES/CASE STUDIES OF SYSTEM STUDIES REQUIRED AND SYSTEM STUDY SPECIFICATIONS
Develop the specification for a system study for the substation of the previous module including: studies to be made, points which should be studied, expected outcomes, impact on basic ratings, other issues such as handling excessive fault level and poor voltage conditions
MODULE 5: OVERVIEW OF SWITCHYARD EQUIPMENT AND THEIR ORDERING SPECIFICATIONS
Main (primary) equipment: Busbars, disconnectors, circuit breakers, instrument transformers, lightning arrestors, power transformers, structures
Sectional and Safety clearances and their influence on the layout
Design of busbars (strung/tubular) and interconnections between equipment
Interconnecting cables and use of marshalling kiosks
MODULE 6: EXAMPLES/CASE STUDIES OF SUBSTATION EQUIPMENT RATINGS/ORDERING SPECIFICATIONS
Elaboration of example continued from modules 3 and 4: work out detailed ratings of equipment, update the single line diagram, layout of HV switchyard and sectional views, clearances, internal movements and enhanced clearances
MODULE 7: SUBSTATION EQUIPMENT FOR FAULT LIMITING, PF COMPENSATION
Need for and application of: fault limiting reactors, power factor compensation equipment, static VAR compensators
Principles of design and selection of ratings for fault limiting and pf compensation
MODULE 8: SUBSTATION EQUIPMENT FOR HARMONIC CONTROL
What is meant by harmonics?
The sources of harmonic generation
The effect of harmonics on electrical equipment
Applicable limits of harmonic distortion THD (V) and THD (I)
Harmonic control measures: control at source, control by passive filters, control by active filters
Rating of passive filters
Integration of filters and PFC during design
MODULE 9: OVERVIEW OF MEDIUM VOLTAGE (MV) METAL ENCLOSED SUBSTATION EQUIPMENT
Application of medium voltage in distribution networks
Main equipment: metal-enclosed switchgear, isolators, circuit breakers, instrument transformers, distribution transformers
Control, protection and auxiliary power
Cabling in substations
Ventilation and fire safety
Arc safety and fire safety in MV installations
MODULE 10: EXAMPLES/CASE STUDIES OF MV SUBSTATION EQUIPMENT DESIGN
Add an MV distribution requirement to the HV switchyard of module 6 with associated equipment for pfc and harmonic control. Based on the same: prepare a single line diagram for MV equipment, calculate ratings of pfc and harmonic control equipment
MODULE 11: MV SUBSTATION DESIGN AND SPECIFICATIONS
Sizing of main equipment of MV substations
Layout of typical MV indoor substation
Switchgear room planning
Space for auxiliary supply equipment
Cabling as a part of building planning
MODULE 12: EXAMPLES/CASE STUDIES OF MV SUBSTATION EQUIPMENT LAYOUT
Based on the design details of module 11: work out space requirement for the switchgear, work out the space requirement for pfc and harmonic control equipment considering both indoor and outdoor options, prepare a layout in relation to the HV switchyard of module 6
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Learning and Teaching
Benefits of online learning to Students
- Cost effective: no travel or accommodation necessary
- Interactive: live, interactive sessions let you communicate with your instructor and fellow students
- Flexible: short interactive sessions over the Internet which you can attend from your home or office. Learn while you earn!
- Practical: perform exercises by remotely accessing our labs and simulation software
- Expert instructors: instructors have extensive industry experience; they are not just 'academics'
- No geographical limits: learn from any location, all you need is an Internet connection
- Constant support: from your instructor(s) and a dedicated Learning Support Officer for the complete duration of the course
- International insight: interact and network with participants from around the globe and gain valuable insight into international practice
Benefits of online learning to Employers
- Lower training costs: no travel or accommodation necessary
- Less downtime: short webinars (60-90 minutes) and flexible training methods means less time away from work
- Retain employees: keep staff who may be considering a qualification as full time study
- Increase efficiency: improve your engineering or technical employees’ skills and knowledge
- International insight: students will have access to internationally based professional instructors and students
How Does it Work?
EIT online learning courses involve a combination of live, interactive sessions over the Internet with a professional instructor, set readings, and assignments. The courses include simulation software and remote laboratory applications to let you put theory to practice, and provide you with constant support from a dedicated Learning Support Officer.
Practical Exercises and Remote Laboratories
As part of the groundbreaking new way of teaching, our online engineering courses use a series of remote laboratories (labs) and simulation software, to facilitate your learning and to test the knowledge you gain during your course. These involve complete working labs set up at various locations of the world into which you will be able to log to and proceed through the various practical sessions.
These will be supplemented by simulation software, running either remotely or on your computer, to ensure you gain the requisite hands-on experience. No one can learn much solely from lectures, the labs and simulation software are designed to increase the absorption of the materials and to give you a practical orientation of the learning experience. All this will give you a solid, practical exposure to the key principles covered and will ensure that you obtain maximum benefit from your course.
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