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2006 Auckland Blackout
The 2006 Auckland Blackout was a major electrical Power blackout, blackout in Auckland, the largest city in New Zealand, on 12 June 2006. It started at 08:30 local time, with most areas of Auckland regaining power by 14:45 local time. It affected some 230,000 customers and at least 700,000 people in and around the city. Immediate effect Power went off at around 8:30 am local time on 12 June 2006 over half of Auckland in New Zealand. Most of southern and central Auckland, including the central city were without power. Cause The cause of the blackout was traced back to the Otahuhu Electrical substation, sub-station, the city's main transmission switching station. A corroded shackle connecting the Otahuhu to Penrose 220 kV line's earth wire had broken in winds, letting the earth wire fall across the 220 kV line and the 110 kV busbar below it, tripping both the line and three sections of the busbar, disconnecting lines to Mount Roskill, Penrose and Pakuranga. The tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Blackout
A power outage (also called a powercut, a power out, a power failure, a power blackout, a power loss, or a blackout) is the loss of the electrical power network supply to an end user. There are many causes of power failures in an electricity network. Examples of these causes include faults at power stations, damage to electric transmission lines, substations or other parts of the distribution system, a short circuit, cascading failure, fuse or circuit breaker operation. Power failures are particularly critical at sites where the environment and public safety are at risk. Institutions such as hospitals, sewage treatment plants, and mines will usually have backup power sources such as standby generators, which will automatically start up when electrical power is lost. Other critical systems, such as telecommunication, are also required to have emergency power. The battery room of a telephone exchange usually has arrays of lead–acid batteries for backup and also a socket f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whakamaru To Brownhill Road Transmission Line
The Whakamaru to Brownhill Road transmission line is a double-circuit 400 kV-capable transmission line constructed by Transpower to increase the capacity of the National Grid between the southern Waikato and the city of Auckland. The line runs from the Whakamaru sub-station near the Whakamaru Power Station, over a distance of to the new Brownhill Road substation near Whitford in southeastern Auckland. The line will initially be operated at 220 kV. From Brownhill Road, 220 kV underground cables connect the line to the Pakuranga sub-station in eastern Auckland. The project was the subject of considerable controversy and protest during the planning and approval stages. Construction of the line started in February 2010, and the line was commissioned on 30 October 2012. The transmission line forms the major part of a wider North Island Grid Upgrade project with a forecast cost to completion of $894 million. Overview The line was a major enhancement to the National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Power Transmission Systems In New Zealand
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 positiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000s In Auckland
S, or s, is the nineteenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ess'' (pronounced ), plural ''esses''. History Origin Northwest Semitic šîn represented a voiceless postalveolar fricative (as in 'ip'). It originated most likely as a pictogram of a tooth () and represented the phoneme via the acrophonic principle. Ancient Greek did not have a phoneme, so the derived Greek letter sigma () came to represent the voiceless alveolar sibilant . While the letter shape Σ continues Phoenician ''šîn'', its name ''sigma'' is taken from the letter '' samekh'', while the shape and position of ''samekh'' but name of ''šîn'' is continued in the '' xi''. Within Greek, the name of ''sigma'' was influenced by its association with the Greek word (earlier ) "to hiss". The original name of the letter "sigma" may have been ''san'', but due to the compli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2006 Disasters In New Zealand
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics Six is the smallest positive integer which is neither a square number nor a prime number; it is the second smallest composite number, behind 4; its proper divisors are , and . Since 6 equals the sum of its proper divisors, it is a perfect number; 6 is the smallest of the perfect numbers. It is also the smallest Granville number, or \mathcal-perfect number. As a perfect number: *6 is related to the Mersenne prime 3, since . (The next perfect number is 28.) *6 is the only even perfect number that is not the sum of successive odd cubes. *6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square number, . Six is the only number that is both the sum and the product of three consecutive positive numbers. Unrelated to 6's being a perfect number, a Golomb ruler of length 6 is a "perfect ruler". Six is a con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2006 In New Zealand
The following lists events that happened during 2006 in New Zealand. Population * Estimated population as of 31 December: 4,209,100 * Increase since 31 December 2005: 48,200 (1.16%) * Males per 100 Females: 95.8 Incumbents Regal and viceregal *Head of State – Elizabeth II *Governor-General – Dame Silvia Cartwright, succeeded by Anand Satyanand Government The 48th New Zealand Parliament continued. Government was a coalition between Labour and the Progressives, with United Future and New Zealand First supporting supply votes. The leaders of the two support parties are ministers outside Cabinet. *Speaker of the House – Margaret Wilson (Labour) *Prime Minister – Helen Clark (Labour) *Deputy Prime Minister – Michael Cullen (Labour) *Minister of Finance – Michael Cullen (Labour) Non-Labour ministers *Jim Anderton (Progressives) (within Cabinet) *Winston Peters (New Zealand First) – Minister of Foreign Affairs, Racing and Associate Minister of Senior Citizens (out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2006 In Economics
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics Six is the smallest positive integer which is neither a square number nor a prime number; it is the second smallest composite number, behind 4; its proper divisors are , and . Since 6 equals the sum of its proper divisors, it is a perfect number; 6 is the smallest of the perfect numbers. It is also the smallest Granville number, or \mathcal-perfect number. As a perfect number: *6 is related to the Mersenne prime 3, since . (The next perfect number is 28.) *6 is the only even perfect number that is not the sum of successive odd cubes. *6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square number, . Six is the only number that is both the sum and the product of three consecutive positive numbers. Unrelated to 6's being a perfect number, a Golomb ruler of length 6 is a "perfect ruler". Six is a con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Outages In New Zealand
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 politi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Power Outages
This is a list of notable wide-scale power outages. To be included, the power outage must conform to of the following criteria: * The outage must not be planned by the service provider. * The outage must affect at least 1k people. * The outage must last at least one hour. * There must be at least 1,000,000 person-hours of disruption. For example: * 1,000 people affected for 1,000 hours (42 days) or more would be included; fewer than 1,000 people would not be, regardless of duration. * One million people affected for a minimum of one hour would be included; if the duration were less than one hour, it would not, regardless of number of people. * 10,000 people affected for 100 hours, or 100,000 for 10 hours would be included. Largest Longest This method is a formula that multiplies the number of hours by the population affected and doesn't reflect the nominal time in hours that the outages lasted. 1960–1969 1965 On the evening of November 9, the Northeast blackout o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1998 Auckland Power Crisis
The 1998 Auckland power crisis was a five-week-long power outage affecting the central city of Auckland, New Zealand from 19 February to 27 March 1998. A 1998 ministerial inquiry criticised both the Auckland Electric Power Board and its privatised successor, which had halved its staff after taking over in October 1993. The report blamed risk and asset management and contingency planning, but said reviews of the electricity network were in accordance with industry practice. However, Mercury Energy’s Board had known for 5 years of a potential failure of the power cables, but, instead of also replacing them, took the cost-saving risk of only building a replacement tunnel, which wasn't ready in time. The inquiry report also said, "Internal expertise in 110 kV assets was not maintained at a sufficient level". At the time, almost all of Auckland's central business district was supplied with electricity by Mercury Energy Limited via four 110 kV power cables from the national grid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Auckland And Northland Grid Upgrade Project
The North Auckland and Northland (NAaN) grid upgrade project reinforced transmission into the Auckland Region and across the harbour to North Auckland and the Northland Region. It added new 220 kV transmission capacity to the National Grid by providing 37 km of underground cable between the Pakuranga, Penrose, and Albany substations. The project included new grid exit points at Hobson Street (Auckland CBD) and Wairau Road ( North Shore) and a cable across the Auckland Harbour Bridge. The estimated total cost of the cable aspects of the works was $415 million. The project was completed and the connection was commissioned in February 2014 at a final cost of NZ$473 million. Overview The NAan project established a 220 kV connection between the Pakuranga and Penrose substations, and a further 220 kV connection between the Penrose and Albany substations. The Penrose to Albany section included connections to the zone substations owned by Vector at Hobson Street i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakuranga
Pakuranga is an eastern suburb of Auckland, in northern New Zealand. Pakuranga covers a series of low ridges and previously swampy flats, now drained, that lie between the Pakuranga Creek and Tamaki River, two estuarial arms of the Hauraki Gulf. It is located to the north of Manukau and 15 kilometres southeast of the Auckland CBD. History The suburb's name comes from the Māori , meaning ''battle of the sunlight'' or ''battle of the sun's rays''. The name refers to a fierce battle at Ōhuiarangi / Pigeon Mountain over forbidden love raged between two - fairy people of the forest - until a priest caused the sun to rise and the earth to explode. Caught by the rays of the sun and volcanic eruptions, many patupaiarehe perished. Pakuranga is traditionally home to the Ngāi Tai Iwi also known as Ngāi Tai ki Tāmaki. The prominent pā were at Ohuiarangi / Pigeon Mountain and Mokoia Pā of Ngāti Paoa at Panmure on a cliff, at the intersection of the Te Wai Ō Taiki / Tamaki Riv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
