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2011 Chile Blackout
The 2011 Chile blackout was a major power outage that occurred on 24 September 2011, approximately between 20:30 and 21:45 local time (23:30 and 00:45 UTC respectively), although the time of reinstatement varied geographically. It mainly affected the regions from Coquimbo to Maule, where the blackout was total, but it also reportedly partially affected the Atacama and Bío Bío regions. The blackout affected approximately nine million Chileans. The cause of the blackout, which started at 20:30 local time ( UTC−03:00), was later determined to be equipment failure at an electrical substation. Rodrigo Álvarez Zenteno, Minister of Energy, noted a computer system malfunction and "oscillation problems" affecting two power lines. The blackout interrupted mobile phone service and forced the evacuation of thousands of rail and rapid transit passengers in Santiago, the capital city. It also delayed a concert by pop singer Ricky Martin A supermarket in Quilicura was looted, and a yout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Outage Pichilemu, Los Navegantes
Power most often refers to: * Power (physics), meaning "rate of doing work" ** Engine power, the power put out by an engine ** Electric power * Power (social and political), the ability to influence people or events ** Abusive power Power may also refer to: Mathematics, science and technology Computing * IBM POWER (software), an IBM operating system enhancement package * IBM POWER architecture, a RISC instruction set architecture * Power ISA, a RISC instruction set architecture derived from PowerPC * IBM Power microprocessors, made by IBM, which implement those RISC architectures * Power.org, a predecessor to the OpenPOWER Foundation * SGI POWER Challenge, a line of SGI supercomputers Mathematics * Exponentiation, "''x'' to the power of ''y''" * Power function * Power of a point * Statistical power Physics * Magnification, the factor by which an optical system enlarges an image * Optical power, the degree to which a lens converges or diverges light Social sciences and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2010 Chile Blackout
The 2010 Chile blackout was an electric power outage that affected most of Chile on March 14, 2010. It began at 8:44 pm (23:44 GMT) on Sunday and continued into the next day. The power was restored in a few hours in some areas, and by midnight in most areas, except in the Biobío Region.CDEC-SIC Communicado Retrieved 17 March 2010. The blackout was caused by a failure of a 500 kV at a substation in southern Chile that is part of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colbún S
Colbún (Mapudungun: "Cleaning of the land") is a Chilean town and commune in Linares Province, Maule Region. The commune has a population of over 17,000 inhabitants and covers an area of , making it the province's largest. Its capital, the town of Colbún, has 3,679 inhabitants (2002 census). It is west of the center of continental Chile. Demographics According to the 2002 census of the National Statistics Institute, Colbún spans an area of and has 17,619 inhabitants (8,943 men and 8,676 women). Of these, 5,152 (29.2%) lived in urban areas and 12,467 (70.8%) in rural areas. The population grew by 3.9% (669 persons) between the 1992 and 2002 censuses. Geography The Colbún commune is bordered on the west by Yerbas Buenas; on the southwest by Linares and Longaví; on the north by San Clemente, (Talca Province); on the east and southeast, by Argentina, and on the south, by Parral and San Fabián; the latter in Ñuble Region. The municipality of Colbún occupies the easternmos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endesa (Chile)
Endesa, S.A. (, originally an initialism for ''Empresa Nacional de Electricidad, S.A''.) is a Spanish multinational electric utility company, the largest in the country. The firm, a majority-owned subsidiary of the Italian utility company Enel, has 10 million customers in Spain, with domestic annual generation of over 97,600 GWh from nuclear, fossil-fueled, hydroelectric, and renewable resource power plants. Internationally, it serves another 10 million customers and provides over 80,100 GWh annually. Total customers numbered 22.2 million as of December 31, 2004. It also markets energy in Europe. The company has additional interests in Spanish natural gas and telecommunications companies. Endesa is one of the three large companies in the electricity sector in Spain, which together with Iberdrola and Naturgy, dominate around 90% of the national electricity market. Endesa carries out activities of generation, distribution and commercialization of electricity, natural gas and rene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cascading Failure
A cascading failure is a failure in a system of interconnected parts in which the failure of one or few parts leads to the failure of other parts, growing progressively as a result of positive feedback. This can occur when a single part fails, increasing the probability that other portions of the system fail. Such a failure may happen in many types of systems, including power transmission, computer networking, finance, transportation systems, organisms, the human body, and ecosystems. Cascading failures may occur when one part of the system fails. When this happens, other parts must then compensate for the failed component. This in turn overloads these nodes, causing them to fail as well, prompting additional nodes to fail one after another. In power transmission Cascading failure is common in power grids when one of the elements fails (completely or partially) and shifts its load to nearby elements in the system. Those nearby elements are then pushed beyond their capacity s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protective Relay
In electrical engineering, a protective relay is a relay device designed to trip a circuit breaker when a fault is detected. The first protective relays were electromagnetic devices, relying on coils operating on moving parts to provide detection of abnormal operating conditions such as over-current, overvoltage, reverse power flow, over-frequency, and under-frequency. Microprocessor-based solid-state digital protection relays now emulate the original devices, as well as providing types of protection and supervision impractical with electromechanical relays. Electromechanical relays provide only rudimentary indication of the location and origin of a fault. In many cases a single microprocessor relay provides functions that would take two or more electromechanical devices. By combining several functions in one case, numerical relays also save capital cost and maintenance cost over electromechanical relays. However, due to their very long life span, tens of thousands of these "sil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linares, Chile
Linares is a Chilean city and Communes of Chile, commune located in the Maule Region and lies in the fertility (soil), fertile Chilean Central Valley, south of Santiago, Chile, Santiago and south of Talca, the Maule Region, regional capital. Linares is the capital city of the Linares Province, province of Linares. Demographics According to the 2002 census of the National Statistics Institute (Chile), National Statistics Institute, Linares spans an area of and has 83,249 inhabitants (40,518 men and 42,731 women). Of these, 68,224 (82%) lived in urban areas and 15,025 (18%) in rural areas. The population grew by 7.7% (5,933 persons) between the 1992 and 2002 censuses. Geography The municipality covers an area of and the city proper, . The rivers Ancoa, river Putagán, Putagán and Achibueno are the main rivers that pass through the municipality or form its natural borders. Most of the territory of the municipality is located within the central plain or "depresión intermedia" ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. They are a common component of the infrastructure, for instance there are 55,000 substations in the United States. Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control. The word ''substation'' comes from the days before the distribution system became a grid. As central generation stations became ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short Circuit
A short circuit (sometimes abbreviated to short or s/c) is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance. This results in an excessive current flowing through the circuit. The opposite of a short circuit is an "open circuit", which is an infinite resistance between two nodes. Definition A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the Thévenin equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion. Although usually the result of a fault, there are cases where short circuits are caused intentionally, for example, for the purpose of voltage-sensing crowbar circuit protectors. In circuit analysis, a ''short circuit'' is defined as a connection between two nodes that forces them to be at the same voltage. In an 'ideal' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Teniente
El Teniente ("The Lieutenant") is an underground copper mine located in the Chilean Andes, above mean sea level. It is in the commune of Machalí in Cachapoal Province, Libertador General Bernardo O'Higgins Region, near the company town of Sewell. This was established for the workers and their families. Mining at El Teniente is reported to have started as early as 1819. In the early 20th century, two men from New York, United States set up a mining operation there, starting operations in 1906. Kennecott Copper Corporation, based in Utah, United States, later operated the mine through their subsidiary company. The Chilean government bought a 51% interest in the mine in 1967. Some 15,000 people lived in Sewell at its height as a company town. In 1971 Chile nationalized copper production under President Salvador Allende and formed the state-owned copper mining company Codelco. This company still operates the mine. Workers began to live in other areas. With over of undergrou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CODELCO
Codelco (''Corporación Nacional'' ''del'' ''Cobre de Chile'' or, in English, the National Copper Corporation of Chile) is a Chilean state-owned copper mining company. It was formed in 1976 from foreign-owned copper companies that were nationalised in 1971. The headquarters are in Santiago and the seven-man board of directors is appointed by the President of the Republic. It has the Minister of Mining as its president and six other members including the Minister of Finance and one representative each from the Copper Workers Federation and the National Association of Copper Supervisors. It is currently the largest copper producing company in the world and produced 1.66 million tonnes of copper in 2007, 11% of the world total. It owns the world's largest known copper reserves and resources. At the end of 2007 it had a total of reserves and resources of 118 million tonnes of copper in its mining plan, sufficient for more than 70 years of operation at current production rates. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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