In a thermal power plant i saw a substation of 220kv and in the other one 2kv. This document outlines the primary design standard for transgrid substations. Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. Commercial and industrial substation manual design and. These power generating stations may be hydroelectric, thermal or atomic. Electrical substation now days the electrical power demand is increasing very rapidly. The document is divided into 12 chapters starting from electrical arrangement to lightning and earthing protection.
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 substations are mainly used to convert ac alternating current to dc direct current. It is a usual practice by many electrical utilities to prepare oneline diagrams with. Ranked 27th in quality of electricity supply source wef. Depending upon the availability of resources these stations are constructed. Electrical bus system and electrical substation layout. Between the generation and distribution, the voltage may vary through several substations. The power transformer, circuit breaker, busbar, insulator, lightning arrester are the main components of an electrical substation. General arrangement a designer perspective, but fine tuned at site. Placement of switchyard control room placement fire fighting pump house placement dg set placement lt station placement acdb, dcdb. In this method we have assumed value of shielding angle as well as protection angle 45o.
Other electrical engineering may include conduit or trench design, power factor correction or harmonic filter design, and other associated tasks. The input for a distribution substation is typically at least two transmission or subtransmission lines. The substation equipments such as conductors, transformers, etc. Surge arresters are generally connected between phase conductor and ground. Substation design volume ii physical layout instructor. The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. 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. Commercial and industrial substation manual design and construction photo credit. Covers the application and relevant specifications related to. House wiring diagram, electrical design and floor plans unique home theater wiring diagram sample thebrontes.
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. Fundamentals of modern electrical substations part 1. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. Electrical loss minimization where to place substation platforms. Our team has a thorough knowledge of substation design, as well as wealth of. Recent technological develop ments have had a tremendous impact on all. Electrical substation components, workings and their functions. Our thanks to cooperative research network of the national rural electric cooperative association. In a substation surge arrester is located at the starting of the substation as seen from incoming transmission lines and is the first equipment of. Substation design guidelines eep electrical engineering portal. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and. Reference indoor distribution substation design standard by ergon energy.
Short circuit and current capacity of equipment, bus and other equipment compliance with projects scope and requirements number of feeders and load circuits. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. An electrical substation is a subsidiary station of an. The attached report for leedco icebreaker project, dated february 14, 2014, and consisting of 41 pages is provided as a deliverable under. The substation configuration language scl of iec 61850 will be presented with information on how the standardization of substation configuration will impact the future of substation automation. An electrical substation is the component of a power system with which voltages are transformed for the transmission, distribution, transformation and switching of power. So, i want to know how we decide the size of substation on kv and. Responsibilities the group manager works enablement is the process owner responsible for approving this reference. The electrical substation is the part of a power system in which the voltage is transformed from high to low or low to high for transmission, distribution, transformation and switching. Substation layout substation layout single line diagram check. And the benefits of 3d modeling, including for electrical substation design and construction, just get better from there.
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. Design guide for rural substations usda rural development. 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 functioning of the system. Get access to premium hvmvlv technical articles, electrical engineering guides, research studies and much more. Location of the surrounding loads in the layout of both the current and the. We offer high quality individual components or a whole package incorporating all key equipment required for a complete, integrated substation solution at competitive prices. 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. Substation earthing system design underground horizontal earth mesh matgrid the mesh is formed by placing mild steel bars placed in x and y directions in mesh formation in the soil at a depth of about 0. Now i will discuss the classification of an electrical substation. The objective is to use topobase for showing the electrical transmission and distribution lines on a map of uk. Some types of substations are tiny in size with an inbuilt transformer as well as related switches.
Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. Fundamentals of modern electrical substations part 3. Determination of optimal substation ground grid layout and specifications, or recommendations for improving existing grids. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. The first step in planning a substation layout is the. Electrical substation engineering aspects course no. This electrical substation and switchyard design course focus on elementary safety standards and practices in substations and switchyard design. The manager substation design is the subject matter expert sme for the content and shall. The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering. The substation is the part of an electrical supply system which transmits the high voltage from the generating substations to the local distribution networks. Technical guide the mvlv transformer substations abb group.
By this post, you will gain some very basic information for a substation. The following current and former members of the substation subcommittee of the nreca. What is a electrical substation definition, layout, and. 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. 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. Doc 379 kb, 1012015 functional specification for threephase substation distribution transformers 30012,000 kva pdf. 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. The project was successfully executed on time despite short execution schedule. 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. 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. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment. For switchgear transformers, ratings of circuit breakers, switch disconnecters loadbreak switches, isolators.
Substation definition and meaning collins english dictionary. Distribution voltages are typically medium voltage, between 2. Electrical utilities and substation design autodesk. Appendix d substation and cable route design report. Electrical power substation engineering and layout. Indoor distribution substation layout with 3 transformers, emf containment and more than 1 external wall. High voltage substation design and application guide eep.
Getco, the state transmission company of gujarat is the customer. A substation is an electrical system with highvoltage capacity and can be used to control the apparatus, generators, electrical circuits, etc. Fundamentals of electrical substations and switchgear. For preparation of dslp layout of substation, many design methods are used from among all, we are using fixed angle method for dslp design. Figure 1 shows a budget and actual hours spent on design. Electrical substation components list diagram, working. Transgrid publishes this information under clause 5. The electrical substation design is a complex method with full of engineer planning. Prepared by the subcommittee on the design of substation structures of the committee on electrical. Covers bare conductors, rigid and strain bus design. Layout for collector system tradeoff reliability and costs, can run redundant ring configurations, which.
Classification of electrical substation an electrical. Breaker and a half generic substation layout mesh connection. Placement of switchyard control room placement fire fighting pump house. Basic substation configurations and the components avo training. This specification covers the electrical and mechanical characteristics of eatons cooper power series 30012,000 kva threephase substation distribution transformers.
For fulfilling these huge power demands the modern time requires creation of bigger and bigger power generating stations. Surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges. All rus borrowers rus electric staff effective date. I am working currently in the water domain and exploring the adoption of autocad electrical for drawing substation drawings and linking the same with the substation shown as a. Conventionexhibition centres and major shopping complexes. A substation is a place where highvoltage electricity from power plants is converted to.