Substation engineering ais and gis substations beta. Abstract digital technology has penetrated further into the substation environment over the past two decades. A substation is a high voltage electric system facility. Mediumvoltage substation technology for the distribution network of the future hanover, april 08, 20 in the field of mediumvoltage substations, abb is showcasing exhibits designed to provide simplifying assistance in creating the energy supply system of the future. Depending upon the availability of resources these stations are constructed. In 1980 he was awarded the national prize for his contribution to development of 750 kv ac. C sharma 2 1research scholar, uttarakhand technical university, dehardun uttarakhand,india. They work by increasing the voltage of the electricity produced by the generator, from an average of between 12,000 and 22,000 volts, up to transmission voltages of 2,000 and 275,000 volts, and then back down to 66,000, 33,000 or 11,000 volts to enter the distribution network. Reviews certain mergers and acquisitions and corporate transactions by. Gis substations use sf6 gas that reduces the distance needed between active and non. This course covers all aspects of high and medium voltage substation design, including regulatory and environmental requirements, general design considerations, and the application of switching and power equipment, fault calculations, safe grounding design, protectioncontrol, automation and communication, and maintenance considerations.
Studies showed that the voltage drop, total impedance, percentage efficiency and percentage regulation on the feeder are 944 v, 4. No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. A mv lv transformer electrical substation consists, therefore, of the set of devices dedicated to the transformation of the voltage supplied by the distribution network at medium voltage e. The layout of the isolating point that must be accessible to the network. Technical guide the mvlv transformer substations abb group. Firstly, vendorspecific implementations in the scada. Design and installation of medium voltage switchgear. Auxiliary dc control power system design for substations michael j. Abstractthe most critical component of a protection, con trol, and monitoring system is the auxiliary dc control power.
Threephase distribution transformers with high voltage bushings. Insulating rubber gloves offer workers that work on or near live wires, personal protection against electrical shocks. Equipment list included low and medium voltage switchgear, 80mw generator, 69kv sf6 breaker and 50 mva transformer onsite regasket of 69kv, 50 mva transformer, reprocessed oil, performed degasification and replaced prd high voltage substation project profiles continued. Transformers are the largest single piece of equipment in a substation. The proposed transaction concerns the acquisition by nkt of abb groups. Substations a substation is a highvoltage electric system facility. The load current, minimum voltage of battery system, amperehour, duration etc. Substations are an important part of the electrical generation, transmission and distribution system. Vacuum medium voltage gas sf6 high voltage magnetic air distribution tank dead tank live tank ratings ansi c37. Mediumvoltage shielded power cable 2 kv up to 35 kv 570. Elgin has delivered over 100 unitized substation applications. The term medium voltage is commonly used for distribution systems. Ge optimizing maintenance and replacement decisions. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978.
Current and voltage digital transformation in a modern substation protection and automation it has been traditional to present scaled versions of power system currents and voltages to measuring devices, protective relays etc. Annex a contains explanations of abbreviations and key terms. Power supply at medium voltage electrical installation guide. High voltage substation environment ge grid solutions. Design guide for rural substations usda rural development. Substation merging unit smu615 supporting the digitalization of the substation smu615 is a dedicated merging unit with a standard digital interface, making it possible to connect abb sensors and conventional instrument transformers to the iec 6185092 lebased process bus for extended interoperability of substation automation devices. The use of sampled value sv makes current voltage sampling at primary side easier and more reliable.
The voltage and current signals are captured at primary side, converted to digital signals and transferred to. Medium voltage circuit breakers bolted connections to bus bars or wires, especially in outdoor switchyards. Synopsis the backbone of many electric power systems is the medium voltage distribution system. Insulating rubber gloves undergo a range of voltage, ageing and mechanical testing which ensures that they comply with iec 60903 and en 60903 continue reading.
Jul 28, 20 standard voltage type voltage extra low voltage up to 50v acdc low voltage 50v acdc medium voltage above v acdc upto 6. For technical and economic reasons, the service voltage of medium voltage distribution. Cables in electrical energy systems the first modern according to todays views a 10 kv cable line was built in 1890. Connects the medium voltage distribution system to end use. High and medium voltage substation design, testing and. United states electricity industry primer department of energy. Substation merging unit smu615 protection and control. Digital substation introduction stefan meier, abb substation automation systems, 20141104. What is a substation electrical substation electricity. Vacuum switching technology and components for medium voltage. It also is used to change ac voltages from one level to another, andor change alternating current to direct current or direct current to alternating current. The hit plus transformers also combine extremely reduced loss values a0ak, and.
This system is supplied by breakers from the 4160v bus and the voltage is stepped down to 480v by the 4160v480v transformers shown on the drawing as sus transformer secondary unit substation. C i r e d 21st international conference on electricity distribution frankfurt, 69 june 2011 paper 0405 paper no 0405 14 compact secondary substation in a future medium voltage distribution network. Voltage regulating distribution transformers as new grid asset. The work practices show how to install and test circui. The connection of an electrical installation to a mv utility distribution network. The remainder of the oneline diagram reflects the low voltage system which is operated at 480v. High and medium voltage substation design, testing and maintenance training in london uk, dubai united arab emirates, kuala lumpur malaysia, istanbul turkey, france paris.
For technical and economic reasons, the service voltage of medium voltage distribution networks rarely exceeds 36 kv. A properly planned and designed substation is essential for the reliable operation of a power system network. The specific requirements of the substation project description, physical arrangement, voltage classes, current ratings, protective relaying schemes, metering requirements, etc. This paper presents a new architecture of distribution. Pressure relief valve, with manual bleeder and automatic resealing, set to operate at. Substation merging unit smu615 remote io and merging units.
Location of the surrounding loads in the layout of both the current and the. Mod subs can be incorporated into an existing sub or used as a stand alone sub. It is one of the most important elements in an electrical power substation. They are supplied from the main substation through the internal mv distribution. Our past experience has prepared our engineers to test and repair a multitude of high yard components such as ocbs, sf6 breakers and transformers. Iec 61850 goose data between voltage levels within a substation and also between neighbouring substations. Mediumvoltage substation technology for the distribution. Design of an ultra compact distribution substation p. These power generating stations may be hydroelectric, thermal or atomic. This significantly reduces the amount of cable wiring in a modern substation. Switchdisconnectors combine the functions of a switch with those of a. Components and substations for electrical transmission and. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Tikhodeev encyclopedia of life support systems eolss in 1990.
Commissioning process for new substation equipmenthayes. Moving the intelligence into the high voltage equipment creates a system in which processing units at station, bay and primary process levels monitor the vital parts of the substation as close. Generally speaking, typical forms of substation are. Unesco eolss sample chapters electrical energy systems components and substations for electrical transmission and distribution systems b. Technical engineering, procurement, and construction. A consumer power substation with metering on medium voltage side is an electrical installation connected to a utility supply system at a nominal voltage usually between 1kv 35kv, which for example may supply a single mvlv transformer exceeding generally 1250 kva, several mvlv transformers or one or several mvlv secondary substations. Gis substation also offers unique advantages over airinsulated applications. Failure of the dc control power can render fault detection. Unitized substations are an effective way to simplify a substation project by reducing site labor, reducing complexity of electrical installation and reduce risk of injury. Flow of electric power through a distribution substation. It is used to switch generators, equipment, and circuits or lines in and out of a system.
The term medium voltage is commonly used for distribution systems with voltages above 1 kv and generally applied up to and including 52 kv1. Tikhodeev encyclopedia of life support systems eolss 2. One of iets strengths is in the maintenance, upgrade and repair of hv substationhigh yard equipment. The consumer substation from which the energy is distributed at the fedin line voltage medium voltage a load transfer switch coupling in the substation can form the property border between the supply company and the customer if the customer wants to develop his switchgear part independently. Installation of 11kv440v distribution substation ajinkya lonare1, pravin 2bodadkar, 4shuchiket darunde3, dr.
Instrument transformer a voltage transformer may be defined as an instrument transformer for the transformation of voltage from a higher value to the lower value. Electrical energy systems components and substations for electrical transmission and distribution systems b. The voltage and current signals are captured at primary. Medium voltage unitized substations elgin power solutions. Electrical stations substations by purpose transformer stations. Current and voltage digital transformation in a modern. Site civil works are able to be executed at the same time as electrical install at elgins manufacturing plant. A high voltage substation is comprised of switching equipment, transformers, reactors, var compensators, protection, control, and automation and communication. Fundamentals of electrical substations and switchgear. The consumer power substation with metering on medium voltage. Generating plants connected to the mediumvoltage network. Abstractthe most critical component of a protection, control, and monitoring system is the auxiliary dc control power system. A total solution would be a system providing all protection, control, monitoring, and local and remote commu.
Medium voltage products technical guide the mvlv transformer. Pragmatic approach to application of process bus in medium voltage substations for less wiring and supervised communication communication capabilities with redundant ethernet solutions hsr and prp innovative, safe, cost and energysaving measuring technology option with a digital interface, making it possible to connect abb sensors to the iec. Pdf an investigation into the causes and effects of. Optimization of asset management in high voltage substation based on equipment monitoring and power system operation. Electrical substation now days the electrical power demand is increasing very rapidly. Medium voltage boards air and sf6 isolated rmu 3,324kv medium voltage boards air and sf6 isolated 3,324kv, fast and kassette embodiment turnover for 2006 was approximately 850 million sek with more than 400 employees and has two manufacturing plants in germany and one in china. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Medium voltage technical guide schneider electric documents. Basic elements of substation equipment 1 busbars conductors carrying power to individual branches. Combine active relays and passive arc fault protection optional arc protection with 3 pointtopoint arc detection sensors in the 615 and 620 series relays. Medium voltage substations are of high importance for the electricity distribution networks as they are the points where the medium voltage of the network is converted from 20,15kv or 6,6kv to low voltage 400230v for industrial or domestic use. Pdf an investigation into the causes and effects of voltage.
Ground potential rise in high voltage substations dwarka prasad 1, dr. A0202 basics in electricity and high voltage products. The use of sampled value sv makes currentvoltage sampling at primary side easier and more reliable. Electrical substation stock photos and images 123rf. Substation construction guidelines describes all the steps in building new substations, or expanding existing substations.
Typically operating at voltages ranging from 2,400 to 34,500 volts, voltage stress, corona, surges and protection of equipment all create unique challenges in design, equipment selection, operation and. About grid solutions grid solutions, a ge renewable energy business, serves customers globally with over 15,000 employees in approximately 70 countries. This guideline applies to rooms that contain medium voltage unit substations, and as appropriate, to rooms with large transformers, large power panels, emergency power distribution equipment or central ups systems. For fulfilling these huge power demands the modern time requires creation of bigger and bigger power generating stations. May 15, 2018 electrical substation now days the electrical power demand is increasing very rapidly. Electrical power substation engineering and layout. Requirements were specified for 400kv mosciska substation in warsaw poland treated as an exemplary extrahigh voltage substation.
They transform voltage from high to low, or vice versa, and provide the ties, transformation, switching and protection of the transmission and distribution systems. Standard voltage type voltage extra low voltage up to 50v acdc low voltage 50v acdc medium voltage above v acdc upto 6. Substation construction guidelines alexander publications. A typical abb substation automation system for high or medium voltage includes substation control, communication gateways, an interbay bus, bay control and protection. Technical specification construction of 3311 kv primary sub. Scaled versions can easily be produced using conventional electrical transformers, although capacitor dividers may be. United states electricity industry primer new mexico energy. Substation automation data acquisition and control elements. It is a type of conductor carrying an electrical current to which many connections are made.
Mvlv step down power transformers are indifferently located either in the main substation or in. The merging unit measures the current and voltage signals from the. C i r e d 21st international conference on electricity distribution frankfurt, 69 june 2011 paper 0405 paper no 0405 14 compact secondary substation in a future medium voltage. A substation is a part of an electrical generation, transmission, and distribution system. In autumn 2007, the associations bgw, vdew, vre and vdn merged into the. Agrawal 1,2,3be student123, department of electrical engineering 4proffessor4, department of electrical engineering kdk college of engineering, nagpur, maharashtra, india abstract transmission. The consumer power substation with metering on medium.
Basic elements of substation equipment 1 busbars conductors carrying power to individual branches 2 branches equipment for carrying power to grid lines instrument equipment in branches switch circuit breaker cb busbar disconnector outlet disconnector voltage and current transformers vt, ct. Medium voltage substation technology for the distribution network of the future hanover, april 08, 20 in the field of medium voltage substations, abb is showcasing exhibits designed to provide simplifying assistance in creating the energy supply system of the future. All rus borrowers rus electric staff effective date. Abb substation automation and protection for greater.
Affordable and search from millions of royalty free images, photos and vectors. Preparation of a mediumvoltage dc grid demonstration project. This allows the distribution network operator to combine two secondary substations or spares it from having to. Thompson, schweitzer engineering laboratories, inc. The book is organized as a collection of work practices. Substation merging unit smu615 remote io and merging. Auxiliary dc control power system design for substations.
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