Impact of new grid developments on substation design. Oil filled transformers must be used for all outdoor substation. Compliance with all technical requirements all energize elements comply with the required clearances clearances verify compliance with the last requirements of the national electrical safety code or prepa diseno subw\copy of svc subst profile 2. Placement of switchyard control room placement fire fighting pump house placement dg set placement lt station placement acdb, dcdb. Jul 25, 2018 electrical bus system and electrical substation layout july 25, 2018 february 24, 2012 by electrical4u there are many different electrical bus system schemes available but selection of a particular scheme depends upon the system voltage, position of substation in electrical power system, flexibility needed in system and cost to be expensed. For fulfilling these huge power demands the modern time requires creation of bigger and bigger power.
The objective is to use topobase for showing the electrical transmission and distribution lines on a map of uk. Responsibilities the group manager works enablement is the process owner responsible for approving this reference. Sf 6emissions in the lifecycle process of switchgear a l n g in the lifecycle process of switchgear. Calculations for earth impedances and touch and step potentials are based on site measurements of ground resistivity and system fault levels. A grid layout with particular conductors is then analyzed to determine the effective substation earthing resistance, from which the earthing voltage is calculated. Layout for collector system tradeoff reliability and costs, can run redundant ring configurations, which allow greater reliability but. Surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges.
The first step in planning a substation layout is the. By the same analogy we can explain what a substation does. May 15, 2018 electrical substation now days the electrical power demand is increasing very rapidly. Covers bare conductors, rigid and strain bus design. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. Now i will discuss the classification of an electrical substation. Substation substation a station in the power transmission system at which. Layout for collector system tradeoff reliability and costs, can run redundant ring configurations, which allow greater reliability but higher costs. High voltage substation design and application guide eep.
General arrangement a designer perspective, but fine tuned at site. All rus borrowers rus electric staff effective date. So, i want to know how we decide the size of substation on kv and. The purpose of this document is to provide a general guide to the design of an air insulated switchgear ais and a gas insulated switchgear gis of an ac substation. Commercial and industrial substation manual design and. Typical substation electrical design services include. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist.
Classification of electrical substation an electrical engineer. The substation is a basic part of the electrical system. Distribution voltages are typically medium voltage, between 2. When it is decided to build a new substation or expand an existing substation, a detailed study of. To better understand the importance of electrical substations, lets start with a. In this method we have assumed value of shielding angle as well as protection angle 45o. Electrical bus system and electrical substation layout. Recent technological develop ments have had a tremendous impact on all. Oct 26, 2015 introduction a substation is a part of an electrical generation, transmission, and distribution a substation transform voltage from high to low, or the reverse or perform any of several other important functions like switching, converting etc 5. Single line diagram of 11kv substation substation provides the energy supply for the local area in which the line is located. I am working currently in the water domain and exploring the adoption of. Customer substation manual 6272019 table of contents page 2 of 82 section description 0 preface 010.
When it is decided to build a new substation or expand an existing substation, a detailed study of system parameters is performed to determine location, size, voltage, sources, loads, and role the substation performs on the system. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. Edms, printed to an electronic drawing set adobe pdf and issued to the project manager. The electrical substation design is a complex method with full of engineer planning. In my last post about electrical substation, i discussed what is a substation, why we need substation and the most common components for an electrical substation. These power generating stations may be hydroelectric, thermal or atomic. Collector substations also exist where multiple thermal or hydroelectric power plants of comparable. Verify the integrity of the substation earthing system. Whenever light surges occur then, a highvoltage pass through these electrical components causing damage to them either temporary or permanent damage based on the amount of voltage surge. Design services are integrated with analysis services, resulting in a complete engineered solution. Oct 11, 2012 surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges. Normally stations are where we catch trains or buses.
Expert instructors with decades of substation design experience will guide you in learning how to develop reliable substation. It is a usual practice by many electrical utilities to prepare oneline diagrams with. Go to content substation earthing calculation methodology. The key steps in the substation designing include switchingsystem, planning and placing of equipment, selection of components as well as ordering, support of engineers, structural design, the design of electrical layout, protection of relay, and major apparatus ratings. Ranked 27th in quality of electricity supply source wef. Sf 6emissions in the lifecycle process of switchgear a l n g. Dec 25, 2018 the electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. The main function of the substation is to collect the energy transmitted at high voltage from the generating station and then reduce the voltage to an appropriate value for local distribution and gives facilities for switching. For preparation of dslp layout of substation, many design methods are used from among all, we are using fixed angle method for dslp design. Custom substation expansion project florida expansion design of a 230 kv six position ring connection via transmission lines, and converting the 230 kv to a breaker and a.
Different layouts for substation radial, tapped, lilo. The substation is the part of an electrical supply system which transmits the high voltage from the generating substations to the local distribution networks. An electrical substation can be classified according to its service, function, mounting and types of apparatus as installed below. Electrical bus system and electrical substation layout july 25, 2018 february 24, 2012 by electrical4u there are many different electrical bus system schemes available but selection of a. Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. The layout of a 1 12 circuit breaker substation is shown in the schematic below. Electrical substation components list diagram, working. Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an introduction to typical. This fundamental course leads you through a stepbystep study of the substation design and construction process. The electrical substation does not have a single circuit but is composed of numerous outgoing and incoming circuits which are connected to a busbar i. The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and. In high and medium voltage air insulated substations ais the electromagnetic field, which causes are the static charges of bare cable and conductors and by the.
Classification of electrical substation an electrical. The input for a distribution substation is typically at least two. One and a half circuit breaker layout the reason that such a layout is known as a 1 12 circuit breaker is due to the fact that in the design, there are 9 circuit breakers that are used to protect the 6 feeders. Between the generation and distribution, the voltage may vary through several substations. Commercial and industrial substation manual design and construction photo credit.
Electrical substation now days the electrical power demand is increasing very rapidly. An electrical substation is an installation with electrical equipment capable of interrupting or establishing electrical circuits and changing the voltage, frequency, or other characteristics of the electrical energy. What is a electrical substation definition, layout, and. Technical guide the mvlv transformer substations abb group. An electrical substation is an installation with electrical equipment capable of interrupting or establishing electrical circuits and changing the voltage, frequency, or other characteristics of the electrical energy flowing in the circuits. The manager substation design is the subject matter expert sme for the content and shall. Dec, 2018 the electrical substation does not have a single circuit but is composed of numerous outgoing and incoming circuits which are connected to a busbar i. The structural design and layout of the substation, daily operations, ongoing maintenance, and the people working at or visiting the facility must be 100% safe at all times. Single line diagram of 11kv substation all about electrical.
Electrical power substation engineering and layout. So, i want to know how we decide the size of substation on kv. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. Covers the application and relevant specifications related to. Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. The key steps in the substation designing include switchingsystem, planning and placing of equipment, selection of. The input for a distribution substation is typically at least two transmission or subtransmission lines. House wiring diagram, electrical design and floor plans unique home theater wiring diagram sample thebrontes. Electricity has to be transmitted over large distances as the place where the power is being generated and the place where it is consumed can be far apart.
These power generating stations may be hydro electric, thermal or atomic. Electrical loss minimization where to place substation platforms. Basic substation configurations and the components avo training. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. In a substation surge arrester is located at the starting of the substation as seen from incoming. Fundamentals of modern electrical substations part 1. Electrical substation components, workings and their functions. The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering. In high and medium voltage air insulated substations ais the electromagnetic field, which causes are the static charges of bare cable and conductors and by the atmospheric conditions surges, induce voltages at nolive parts of the installation that create potential differences between metallic parts and ground and also between different points of. The substations are mainly used to convert ac alternating current. The first step in planning a substation layout is the preparation of a oneline diagram, which shows in simplified form the switching and protection arrangement required, as well as the incoming supply lines and outgoing feeders or transmission lines. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth. In a thermal power plant i saw a substation of 220kv and in the other one 2kv.
Typical substation electrical switchyard arrangement. The project included installation of a second 23069 kv transformer, expansion of a 69 kv breaker and a. For preparation of dslp layout of substation, many design methods are used from among all, we are using. Substation layout free download as powerpoint presentation. The substations are mainly used to convert ac alternating current to dc direct current. Covers the layout considerations, bus configurations, and electrical clearances. Some types of substations are tiny in size with an inbuilt transformer as well as related switches. The document is divided into 12 chapters starting from electrical arrangement to lightning and earthing protection. Electrical utilities and substation design autodesk. Design of earthing grounding system in a substation grid. The earthing layout drawings shall show placement and height of lightning spires, and any lightning shield wires, and all connections to earth. By this post, you will gain some very basic information for a substation. Fundamentals of electrical substations and switchgear.
Different layouts for substation the substation is the part of an electrical supply system which transmits the high voltage from the generating substations to the local distribution networks. The substation equipments such as conductors, transformers, etc. Layout the first step in planning a substation layout is the preparation of a oneline diagram which shows in simplified form the switching and protection arrangement required, as well as the incoming supply lines and outgoing feeders or transmission lines. The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. Distribution substations michigan technological university. Scholar, electrical and electronics engineering department, aisect university bhopal.
A substation is an electrical system with highvoltage capacity and can be used to control the apparatus, generators, electrical circuits, etc. Depending upon the availability of resources these stations are constructed. The main function of the substation is to collect the energy transmitted at high. Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an introduction to typical substation components included. Surge arresters are generally connected between phase conductor and ground.
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