Highvoltage cables are manufactured to exact specifications so that they can withstand a variety of mechanical and electrical stresses. Substation equipment in this section we describe the function and operating principles of the following power. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. When emergency repairs and shutdowns happen, we ready 24. Substations receive electricity from a transmission line and reduces it to distribution voltage. Electrical equipment, maintenance scheduling, maintenance, annunciators and alarms, arresters, batteries, bushings. Substation ieee electrical substation electric power. Substations need to be robust, built with products that last. Introduction in our present society that is greatly dependent on electric power, substation technology plays an important role in the stable and highquality transmission of electric energy. Some types of substations are tiny in size with an inbuilt transformer as well as related switches.
Switchgear equipment disconnects and isolates a piece of equipment so maintenance work can be performed. Maintenance of substation equipment table of contents. There are four major types of electric substations. The power transformer, circuit breaker, busbar, insulator, lightning arrester are the main components of an electrical substation. Electrical substation equipment for transferring of electrical power from generating unit to distributing units various types of electrical equipment are required. Typical substation electrical switchyard arrangement. 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. Advances in substation equipment technology have led to increased unit capacity, smaller size, and environmental preservation. Distribution substation a distribution substation transfers power from the transmission system to the distribution system of an area. 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. High voltage substation question for electrical engineer interview. A database has been created that contains data related to damaged and undamaged electrical substation equipment collected from 60 230kv and 500kv substations in.
When a highvoltage cable is terminated for a connection to a circuit or equipment in a substation or switchyard, the termination must also be. Under abnormal conditions, switchgear equipment automatically disconnects faulted equipment from the rest of the power system as. It includes high and mediumvoltage switchgear, transformers, and equipment as well as all ancillary systems for control, protection, communication, and condition monitoring. Recent technological developments have had a tremendous impact on all aspects of substation design and operation. As the complexity of distribution networks grew, it became economically necessary to automate supervision and control of substations from a centrally attended point, to allow overall. This specification covers the electrical and mechanical characteristics of eatons cooper power series 30012,000 kva threephase substation distribution transformers. The first type is the switchyard at a generating station. Electrical substation components, workings and their functions. Solutions for electrical substation maintenance a well planned electrical substation maintenance assures reliable supply and reduction in failures. Ac power is required for substation building small power, lighting, heating and ventilation, some communications equipment, switchgear operating mechanisms, anticondensation heaters and motors. Fundamentals of electrical substations and switchgear. Download electric power substations engineering by john d.
There are nonshielding methods, such as use of lightning arresters and spark gaps. Substation layout sizing and layout, control panel plan and elevation design, equipment foundation and oil containment design. Welcome to the electric substation safety resource site the purpose of this site is to establish a place where all substation workers can come and share their safety ideas,work methods and practices so that we can all benefit from kamagra oral jelly online each others experiences. Development of an electrical substation equipment performance database for evaluation of equipment fragilities. Ieee std 11251993 r2005, ieee guide for moisture measurement and control in sf6 gasinsulated equipment ieee std 11271998 r2004, ieee guide for the design, construction, and operation of electric power substations for community acceptance and. Ranked 27th in quality of electricity supply source wef. A mini project report on operation and maintenance of 2202kv substation submitted in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering submitted by v. Development of an electrical substation equipment performance database for evaluation of equipment fragilities technical report pdf available january 2001 with 4,058 reads how we measure reads. Facilities instructions, standards, and techniques. The typical constructive solution for an internal substation with prefabricated equipment is the. Many failures can be detected during the electrical substation maintenance routines, reducing the risk of significant plant downtime, and preventing future problems. 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.
A database has been created that contains data related to damaged and undamaged electrical substation equipment collected from 60 230kv and 500kv substations in twelve california earthquakes. Overall equipment cabinet dimensions, including height above equipment base. Shielding methods do not permit an arc to form between the conductor and ground. These facilities connect the generators to the utility grid and also provide offsite power to the plant. An electrical substation is a subsidiary station that is part of an electrical generation, transmission, and distribution system.
We are a neta member and our field engineers and technicians use up to date calibrated test equipment. Under normal conditions, switchgear equipment enables routine switching operations to occur. The equipment like bus bars, isolator, power transformer etc. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. It details the electrical hazards which must be managed to. In the fault situations the electric apparatus and systems become dangerous to humans. Electric power may flow through several substations between generating plant and consumer, and may be changed in. Data and requirements shall be provided in accordance with ansi 693. Dc power is used to feed essential services such as circuit breaker trip coils and associated relays, supervisory control and data acquisition scada. It details the electrical hazards which must be managed to ensure the safety of. The checklists are intended to help inspectors keep track of the numerous aspects of an electrical installation.
An indoor substation houses all electrical equipment within the walls of a building. The substation receives electrical energy directly from generating stations through incoming power supply lines while it delivers electricity to the consumers. Our electrical substation maintenance course focuses on maintenance and testing of switchgear, circuit breakers, batteries and protective relays. Substation general equipment detail and layout standard. 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. Overhead lines and substation equipment can be protected against direct strokes to a considerable extent by using earth or ground wires, which shield the equipment. Substation configuration reliability 1 reliability of substation configurations daniel nack, iowa state university, 2005 introduction while one of the strongest points in a power system is the electric substation, it still contains what could be described as weak points or points of failure that would lead to loss of load. Highvoltage substations highvoltage power transmission. There are many variations and combinations of equipment for example switch disconnectors or circuit breakers, combined cts and vts into one, digital protection relays and so on. The checklists are in pdf format and can be completed electronically or printed and used as hard copy. This equipment is a compact multicomponent assembly, enclosed in a ground metallic housing, which the primary insulation medium is a. Components and substations for electrical transmission and. 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.
Listed are electrical substation equipment like transformers, busbar, isolator, capacitor bank, switchyard etc joined together to deliver power. The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering. Pdf maintenance and operation of an electrical substation. Solutions for electrical substation maintenance smc. Orientation of equipment and a complete anchor bolt setting plan. Dec 31, 2015 electrical power design substation engineer interview questions. When the space available for the installation of the substation is short or when the environmental conditions are extremely severe the usual solution is to install a gis gas insulated substation, which schematic diagram is shown in figure 3.
Maintenance and operation of an electrical substation of. Typical substation electrical design services include. This equipment is a compact multicomponent assembly, enclosed in a ground metallic housing, which. All rus borrowers rus electric staff effective date. Doc 379 kb, 1012015 functional specification for threephase substation distribution transformers 30012,000 kva pdf. Substation construction manual i reference ni000401r122 ver 3 ergon energy corporation limited abn 50 087 646 062 ergon energy queensland pty ltd abn 11 121 177 802 revision history version description of change date 1 initial version 250320 2 content revised and additional content added, including safety. Electrical substation an electrical substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers. Development of an electrical substation equipment performance database for evaluation of equipment fragilities technical report pdf available january. With over 50 years of experience working in electrical testing we have the knowledge and the tools to get the job done right the first time. Generating the electricity and sending it to the power grid. Maintenance of substation equipment electrical info.
The equipment required for a transformer substation depends upon the type of substation, service requirement and the degree of protection desired. 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. We offer a complete line of high quality substation equipment that meets or exceeds industry standards. What is a electrical substation definition, layout, and. 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. The substations are mainly used to convert ac alternating current to dc direct current. Recent technological develop ments have had a tremendous impact on all. Pdf improvement of fragilities for electrical substation. Electrical substation components list diagram, working. Electrical transmission, distribution and switching substations generally have switching, protection and control equipment and one or more transformers.
Distribution voltages are typically medium voltage, between 2. Pdf development of an electrical substation equipment. Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. Siemens scope of supply comprises much more than the highvoltage equipment that is required for the operation of a substation. Learn hv substation elements graphic symbols, basics. An electrical substation is a subsidiary station of an. Fundamentals of modern electrical substations part 1. Distribution substations michigan technological university. The equipment shall be delivered completely engineered, fabricated, inspected, tested, and. Seismic qualification report may be submitted within 150 calendar days after date of contract. Substation equipment an overview sciencedirect topics. The power transformer, circuit breaker, busbar, insulator, lightning arrester are the main components of an electrical. The electrical substation design is a complex method with full of engineer planning. Substation interview questions answers engineering tutorial.
A substation is an electrical system with highvoltage capacity and can be used to control the apparatus, generators, electrical circuits, etc. The input for a distribution substation is typically at least two transmission or subtransmission lines. Technical guide the mvlv transformer substations abb group. Work in substations general summary this document supports the power system safety rules and its requirements assembled under work in substations general.
Sep 16, 2012 ac power is required for substation building small power, lighting, heating and ventilation, some communications equipment, switchgear operating mechanisms, anticondensation heaters and motors. Customer substation manual 6272019 preface page 8 of 82 010. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. Basic substation configurations and the components avo training. Unesco eolss sample chapters electrical energy systems components and substations for electrical transmission and distribution systems b. All electrical equipment furnished under this substation transformer specification shall be designed, constructed, and rated in accordance with the standards of the ieee, usasi, astm, nema, ansi, and rus. When a highvoltage cable is terminated for a connection to a circuit or equipment in a substation or switchyard, the termination must also be made to exact specifications. During the life of electrical equipment insulation resistance testing will give a. Pdf electric power substations engineering by john d. Early electrical substations required manual switching or adjustment of equipment, and manual collection of data for load, energy consumption, and abnormal events.
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