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Albertirsa–Zakhidnoukrainska–Vinnytsia Powerline
The Albertirsa–Zakhidnoukrainska–Vinnytsia powerline is a power transmission line between Ukraine and Hungary. It is a part of the former "Mir" transmission system between the Soviet Union and Comecon countries. As of today, it is the only 750 kV-powerline in Hungary and one of the few powerlines operated with this voltage in the European Union. History On 28 February 1974, the USSR, Bulgaria, Hungary, GDR, Poland and Czechoslovakia signed a cooperation agreement on construction of the 750 kV-line between Vinnytsia and Albertirsa, and substations Vinnytsia, Zakhidnoukrainska and Albertirsa. Construction started in 1975 and it went in service in 1979. Since the synchronization of the power grid of Hungary with that of the synchronous grid of Continental Europe (ENTSO-E) and because of economic reasons, the powerline went out of service in 1993, but was put in service again in 2002 after some new equipment was installed. Technical description The long power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Power Line
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy across large distances. It consists of one or more uninsulated electrical cables (commonly multiples of three for three-phase power) suspended by towers or poles. Since most of the insulation is provided by the surrounding air, overhead power lines are generally the least costly method of power transmission for large quantities of electric energy. Construction Towers for support of the lines are made of wood either grown or laminated, steel or aluminum (either lattice structures or tubular poles), concrete, and occasionally reinforced plastics. The bare wire conductors on the line are generally made of aluminum (either plain or reinforced with steel or composite materials such as carbon and glass fiber), though some copper wires are used in medium-voltage distribution and low-voltage connections to customer premises. A major goal of overhead power line d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhydachiv
Zhydachiv ( uk, Жидачів) is a city in Stryi Raion, Lviv Oblast (region) in western Ukraine. It hosts the administration of Zhydachiv urban hromada, one of the hromadas of Ukraine. Local government is administered by the Zhydachivska city council. Its population is approximately . Zhydachiv lies on the Stryi River. It has two schools and one Ukrainian gymnasium. Name The city has historically had numerous name variants, reflecting its complex past, including pl, Żydaczów and yi, זידיטשוב (''Zidichov''). It was mentioned for the first time in 1164 under the name ''Udech''. In documents from the 14th to 17th centuries, the city was referred to as Zudech, Zudachiv, Sudachiv, Zidachiv, Sidachiv, Zudechev and more. History The first written mention of the city dates from the year 1164. At that time the city was part of Galician Rus' and was an important trade center at the confluence of the river Stryi in Dniester with a stone church of St. Nicholas. Then called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungary–Ukraine Relations
Hungary–Ukraine relations refers to the bilateral relations between Hungary and Ukraine. The modern bilateral relationship between Hungary and Ukraine formally began in the early 1990s, after the end of communism in Hungary in 1989 and Ukrainian independence from the Soviet Union in 1991. Since then, the relationship has been marred by controversy over the rights of the Hungarian minority in the western Ukrainian region of Zakarpattia, where 150,000 ethnic Hungarians reside. Hungary and Ukraine have embassies in Kyiv and Budapest, respectively, as well as consulates in regions with large minority populations. History of relations Hungarian conquest of the Carpathian Basin As told by the ''Primary Chronicle'', the first interactions between the Hungarians and Kievan Rus' occurred towards the end of the 9th century during the Hungarian conquest of the Carpathian Basin, at Askold's Grave in Kyiv. During the Hungarian migration from the Ural Mountains to the Pannonian Basin, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Transmission Systems In Ukraine
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of posit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Infrastructure In Hungary
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-voltage Transmission Lines
High voltage electricity refers to electrical potential large enough to cause injury or damage. In certain industries, ''high voltage'' refers to voltage above a certain threshold. Equipment and conductors that carry high voltage warrant special safety requirements and procedures. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X-rays and particle beams, to produce electrical arcs, for ignition, in photomultiplier tubes, and in high-power amplifier vacuum tubes, as well as other industrial, military and scientific applications. Definition The numerical definition of depends on context. Two factors considered in classifying a voltage as high voltage are the possibility of causing a spark in air, and the danger of electric shock by contact or proximity. The International Electrotechnical Commission and its national counterparts (IET, IEEE, VDE, etc.) define ''high voltage'' as above 1000 V for alternating current, and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Infrastructure Completed In 1979
In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy. Due to mass–energy equivalence, any object that has m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetrino–Isaccea–Yuzhnoukrainsk Powerline
The Vetrino–Isaccea–Yuzhnoukrainsk powerline is the third 750 kilovolts powerline running from Ukraine to the European Union. History Construction of a 750 kV powerline from Ukraine through Romania to Bulgaria was agreed on together with construction of the South Ukraine Nuclear Power Plant. The agreement was signed in Moscow in 1982 by the electrical industry ministers of the Soviet Union, Romania and Bulgaria. The powerline started operating in 1986 and it was completed in 1988. Route The powerline starts in Bulgaria at Vetrino (Suvorovo) substation near Varna and runs northward. In Dobrudja it crosses the border between Romania and Bulgaria and terminates at Isaccea substation in Romania. From there the line crosses Danube River, which forms the border between Ukraine and Romania in a 938 metres long span on two 118 metres tall delta pylons situated east of Isaccea and runs than to Yuzhnoukrainsk substation situated just north of South Ukraine Nuclear Power Plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rzeszów–Khmelnytskyi Powerline
The Rzeszów–Khmelnytskyi powerline is an electrical power transmission line between Ukraine and Poland. It is the only 750 kV-powerline in Poland and one of the few of it in the European Union of this type. History The decision to build this powerline was made in 1977 and it went in operation in 1985. The line went out of service after Poland joined the synchronous grid of Continental Europe (UCTE). However, there was a plan to re-activate this line after 2010 by constructing a back-to-back conversion station on the Polish end of the line, but this was not implemented. In 2016 Energoatom announced it was considering disconnecting unit 2 of the Khmelnytskyi Nuclear Power Plant from the Ukrainian power grid and using the powerline to connect to the Burshtyn TES energy island which operates on the European power grid, to facilitate exports to Poland and Hungary. In 2019 the Ministry of Energy created a consortium, Ukraine Power Bridge Company Limited, to progress th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead-end Tower
A dead-end tower (also anchor tower, anchor pylon) is a fully self-supporting structure used in construction of overhead power lines. A dead-end transmission tower uses horizontal strain insulators at the end of conductors. Dead-end towers may be used at a substation as a transition to a "slack span" entering the equipment, when the circuit changes to a buried cable, when a transmission line changes direction by more than a few degrees, or at intervals along a straight run to limit the extent of a catastrophic collapse. Since dead-end towers require more material and are heavier and costlier than suspension towers, it is uneconomic to build a line with only self-supporting structures.D.G. Fink, H.W. Beaty, ''Standard Handbook for Electrical Engineers Eleventh Edition'', McGraw-Hill, 1978 , pp. 14-80, 14-81 Dead-end towers are used at regular intervals in a long transmission line to limit the cascading tower failures that might occur after a conductor failure. An in-line dead- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspension Tower
In an electric power transmission line, a suspension tower is where the conductors are simply suspended from the tower, the mechanical tension being the same on each side. In this case, the tower is supposed to carry a downward force, and a lateral force, but not a longitudinal force. These may have, for each conductor, an insulator string hanging down from the tower, or two strings making a "V" shape. In either case, sometimes several insulator strings are used in parallel to give higher mechanical strength. These are used where a transmission line continues in a straight line, or turns through a small angle. In other cases, a tension tower (C or D Towers) is used. Enztal 110kV Rohrmasten.jpg, Suspension towers of a 110 kV power line in Germany Опора ЛЭП 330кВ.jpg, A suspension tower of a 330 kV powerline in Ukraine Power line 1150 kV.jpg, A suspension tower of a 1150 kV powerline in Russia Жнива України.jpg, A suspension tower of a 35 kV powerline in Uk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission Tower
A transmission tower, also known as an electricity pylon or simply a pylon in British English and as a hydro tower in Canadian English, is a tall structure, usually a steel lattice tower, used to support an overhead power line. In electrical grids, they are generally used to carry high-voltage transmission lines that transport bulk electric power from generating stations to electrical substations; utility poles are used to support lower-voltage subtransmission and distribution lines that transport power from substations to electric customers. They come in a wide variety of shapes and sizes. Typical height ranges from , though the tallest are the towers of a span between the islands Jintang and Cezi in China's Zhejiang province. The longest span of any hydroelectric crossing ever built belongs to Ameralik Span, the powerline crossing of Ameralik fjord with a length of . In addition to steel, other materials may be used, including concrete and wood. There are four major categ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
