Tag Archives: Auto Transformer
UHV AC outlet device authentication through
UHV AC outlet device authentication through
13, UHV transformers and reactors Used 1000 kV standard outlet devices successfully tested in Baoding, Hebei verified.
Excellent indicator of the outlet device, stable performance, achieved in the operating impulse voltage, lightning
impulse voltage and power frequency withstand voltage of partial discharge-free design expectations. The outlet device
successfully developed to accelerate the subsequent UHV construction progress, special high-voltage transformer
protection and the quality of reactor stability is important.
In transformers and reactors, the 1000 kV to 1000 kV outlet device to bear high pressure from the coil leads, through
the box and connected with the role of the casing. The device requires a high voltage tolerance within a small scale, to
ensure that the electric, magnetic, thermal and mechanical stress under the action of many other long-term reliable
operation, the structural design, quality materials and manufacturing processes demanding. In China s first UHV in the
construction of 1000 kV supply outlet device, seriously affected the progress of the project.
To this end, the State Grid Corporation organized to promote the standardization of 1000 kV outlet device design and
manufacturing. Switzerland, Weidmann for the company in conjunction with domestic manufacturer s standard design, the
company experts to conduct a comprehensive feasibility studies, carry out the checking and review of proposed inspection
and testing requirements, and material preparation, production and installation tests, etc. part of a comprehensive
management and control.
After more than eight months fighting, standardized 1000 kV outlet device developed and Tianwei change security
companies UHV AC pilot demonstration project on a standby transformer produced by the test. Compared with the original
outlet devices, new product performance, reasonable structure, the production cycle is short, easy to install, greatly
easing the follow-up duration of the project UHV pressure.
Hanzhong amorphous alloy transformer power supply bureau through the acceptance of the pilot
Hanzhong amorphous alloy transformer power supply bureau through the acceptance of the pilot
Northwest pilot units as the only three on-site inspection unit and the national one, October 14, Hanzhong, Shaanxi
Power Supply Bureau, "amorphous alloy core distribution transformers in the new rural construction in the applied"
research project successfully passed the State Grid Corporation of experts group acceptance. By the China Electric Power
Research Institute, Shaanxi, Liaoning Provincial Power Company inspection group composed of experts believe that it can
elaborate arrangements for experimental work, bold and innovative testing methods, data results of scientific induction,
gained valuable first-hand information and experience in operation and maintenance management for the State Grid
Corporation of the rural power grid energy loss reduction work made a useful and positive contribution to the
exploration.
Expert inspection group listened attentively to the work of Hanzhong Power Supply Bureau and the pilot of the overall
report on the pilot project analysis, a detailed review of the experimental raw data, field notes, analysis reports and
other relevant information, and in-depth 10 kV lines, and amorphous group of agricultural alloy distribution transformer
with on-site inspection test. Discussed by the experts agreed that the consultation, Hanzhong Council attaches great
importance to and carefully arranged the contents of the experimental work, combined with creative enterprises and the
local real practical application of modern testing, maintenance and management tools, and colleges, enterprises and
scientific research by way of deepening refinement and implementation of research results, not only to ensure the
integrity of test content, systems, and reliable, the State Grid Corporation of the major scientific and technological
projects at the grassroots level and field roots, has made the success of experimental work.
In recent years, Hanzhong Power Supply Bureau, the State Grid Corporation, Shaanxi Electric Power Company issued a
research and innovation, business management, technology and other aspects of experimental work as improve the level of
development, construction, personnel training an important way to fight and has finished as "people skills assessment",
"equipment condition-based maintenance," "honest practitioners risk identification" and a large number of pilot
projects. In this "amorphous alloy core distribution transformers in the new rural construction in the applied" research
project, the council leadership and the establishment of a special working group to refine the applications and
implementation steps, a clear responsibility of the relevant departments and personnel, and from the material supply,
installation and commissioning, operation and management, problem solving and other aspects of coordination, carried out
for the solid success of the pilot work has laid a solid foundation.
the rapid development of amorphous alloy transformer industry, Qingdao, vigorously implement the high-tech high-end industrial innovation project
work with the power to promote energy saving, and localization of amorphous alloy materials to achieve a breakthrough, amorphous alloy transformer industry is expected to accelerate development.
1) amorphous alloy transformer is the key to saving energy distribution network equipment. Distribution transformer loss of about 30% -60% power loss, in which the total loss of the transformer load loss accounts for about 50% -80%. Amorphous alloy transformer transformer load loss than traditional silicon decreased by about 80%; rural power distribution network, especially in many of the transformer load rate of less than 20%, the use of amorphous alloy transformer remarkable energy savings, energy distribution network is down consumption of the device of choice.
2) amorphous transformer market size in 2009 of about $ 1.7 billion over the next 10 years, amorphous alloy transformer market capacity is about 160 billion yuan, a huge market space. Current annual increase in the amorphous transformers distribution transformers account for about 5%. The next decade is expected to add about 2.63 billion distribution transformer kVA, 30% if one uses amorphous transformer, the capacity of 790 million KVA; China’s stock ended 2009 with a change of about 3.13 billion KVA, if the future of which 15% of the non- Crystal transformer replacement, the future capacity of 4.7KVA; also with wind power, photovoltaic transformers with amorphous, amorphous transformer the next decade the market size of about 160 billion yuan, the market is huge, bright future.
3) the amount of amorphous material made of the success of production, power grid enterprises to accelerate energy conservation, or amorphous transformer industry was the explosive growth. Had no national network to promote amorphous alloy transformer, also taking into account the upstream raw material supply shortage, as well as access to foreign trade monopoly profits are. Advanced Technology currently mass production of amorphous strip success, production capacity has reached 40,000 tons, breaking the monopoly of Hitachi Metals. With the production release is expected to amorphous transformer costs will decline further. In addition, energy saving pressure power companies, power companies actively promote energy conservation and replace high-energy transformer transformer, transformer industry is expected to amorphous or show explosive growth.
Qingdao vigorously implement the high-tech high-end industrial innovation project
First, to accelerate the introduction of a large courtyard building. Chinese Academy of Sciences, Qingdao Institute has completed the laser optical radar, optical spectroscopy and meteorological characteristics of the layout of disciplines, with the National Weather Service and other units jointly build a “weather monitoring technology R & D center,” Optical hospital industry’s third project, “Qingdao Branch days Optical Co., Ltd. “located in Qingdao High-tech Zone. Qingdao Institute of Portland-based R & D base to complete the industrial area, research area construction plans,, design, approval, etc., to determine the construction general contractors, construction is now in full swing. Chinese Academy of Sciences software, working to accelerate the introduction of Acoustics, has completed the drafting of an agreement to build, the recent study will be reported to the municipal government meeting. Chinese Academy of Sciences to the drafting of two Green agreement to build and increase the transfer of scientific and technological achievements of the city’s transformation efforts, the next step as soon as possible by the municipal government and the Chinese Academy of Sciences for the formal agreement signed two build.
Second is to further strengthen the high-tech enterprise development work. 84 new high-tech enterprise certified by the state for the record by the city’s total to 289; completion of the first batch of high-tech enterprises review the work program; develop high-tech enterprises in the year 2011 work to identify the program, the organization intends to declare special training will be four games. 2011 January-May, the city’s 289 high-tech enterprise output value 64.2 billion yuan, an increase of 16.29%, a profit of 4.824 billion yuan, up 22.5%, R & D investment 3.2 billion yuan, accounting for 4% of sales revenue.
The third is to accelerate the construction of high-tech industrialization base project. Organized and set up new material industry base lithium industrial technology innovation strategic alliance development transformer amorphous alloy strip production technology and equipment, the establishment of kiloton amorphous alloy strip production line; digital tire construction equipment industry base annual production capacity of 550 sets The radial tire outfit Industrial Park, Industrial Park Phase II and a small tire performance test field has been started. Biomass energy industry base focus on municipal solid waste recycling and energy utilization, waste tire pyrolysis system take key technologies such as fuel oil and marine microalgae in large-scale preparation of high quality bio-fuel and other key technology research and development to achieve substantive results. Marine engineering equipment and equipment industrial base launched “National Oceanic and industrialization base for high-tech field,” the preparatory work carried out mosaic composite sacrificial anode corrosion and other related marine engineering research. January to June 2011, included 12 high-tech industrial base project scope of statistics a total of 153 companies above designated size, the output value of 32 billion yuan, profit of 6.08 billion yuan in the research project 1417, R & D investment 2.33 billion yuan, R & D team with 324.
Fourth, the organization launched a strategic key technologies in emerging industries. Concentrate on the city new energy, new materials, biomedicine, energy conservation and other emerging industries of strategic core technologies, industry prospects and national industrial policy and other systematic studies, organized and completed 34 key technology research projects, 94 innovative SMEs training projects, nearly 70 million yuan of special funds issued, guide support key enterprises and innovative SMEs to accelerate key technologies, and promote the strategic city of innovation and development of new industries. January to June 2011, into eight strategic business scope of new industry statistics there are 43 expected output value of 8.2 billion, a profit of 760 million in 630 research projects, R & D investment 320 million yuan, with R & D team 150.
keywords: Auto Transformer, Autotransformer, Isolating Transformer
Distribution transformer short-circuit test of China’s development
Transformer in the power system operation, it is difficult to avoid some of the short circuit event to take place, depending on the severity of the incident short-circuit the transformer short circuit capacity and strength, and sometimes live in peace, and sometimes damaged. A distribution transformer damage to factories and enterprises in a short-term impact, and a distribution transformer short-circuit accident, the impact of an urban area, and replacement more difficult, and repair will take 2 to 3 months. Therefore, improving the power transformer short circuit capacity, power sector has been very concerned about, is struggling manufacturing sector, the main objective.
Before the 1990s, China only Xi’an, Shenyang, Shanghai, Beijing four high current laboratory (Station), the facility is to switch the main switch capacity of industry to do testing, but also tests of distribution transformers. To this end in the early 1980s, mid-, Shenyang Transformer Research Institute is responsible for unified design SL7 type and old S9-30 ~ 1600kVA/10kV distribution transformers, the prototype of the plant trial were more labs (stations) to do a short test, SL7-type test pass 14 units, S9-type test pass the old 12. After successful trials of new S9-type trial, the first test pass 37 units, the new S9-type pass rate of 90% or more (the Netherlands KEMA test foreign distribution transformers, a passing rate of 50%), as of 1996, including the S7 type, including the laboratory (Station) has been testing about 300 distribution transformers.
Over the past decade, China has done a lot of power distribution transformer short-circuit tests, and for each damage case, improvements are made, so that the pass rate of 90%, 50% pass rate than abroad is much higher, which the actual operation of power grid has been confirmed, has made gratifying achievements. It can be said of distribution transformers against short-circuit strength of the basic solution by the “real test”, which is a very important experience.
China’s lack of test power transformer base, and thus the power transformer short circuit capacity is difficult to solve. In 1986, the State Planning Commission approved the construction of strong currents, Shen Yang Hu Shitai Experiment Station, the test station by the state loan was approved, please consult the French company EDF, after years of work in late 1993 completed the first phase of the project, construction of the 220kV network , install 2 1200MVA / 0 ~ 224kV, and acceptance by the National Expert Committee, opened in January 1994, in 1994 and 1995 distribution transformers and test a lot and made the experience began in 1996 after a power transformer 110kV level short-circuit test.
110kV power transformer short-circuit test of
110kV power transformer is a class system in our country the main transmission and distribution transformers, transformer output production accounts for about 1 / 5, 1995 to 1996 statistics reflect, 110kV class transformer short-circuit accidents accounted for the level of total accidents 5O%, and rise. Therefore, how to improve the level of anti-short way power transformer capacity in Guangdong Zengcheng the main topic of the meeting, recognized the best way is to use short-circuit test verification.
Since 1996 to the first half of 2005, due to the power sector and the importance of manufacturing companies, there have been more than 60 factories were 80 110kV (including two sets of 66kV-class Northeast, 2 export 132kV) power transformer short-circuit test ( where: Shenyang Transformer Co., Ltd. 4, Xinjiang three TBEA Co., Ltd. Nantong AIA transformer 2, Changzhou Transformer Factory 2, 3 sets of Yunnan Transformer Factory, Baoding 2, Huapeng three, etc.) a test pass rate> 96%. Qualified higher than 10kV distribution transformer.
In order to achieve these plants pass a test, have invested a large number of human and material resources in the product development process, design, technology, production and management have made a certain amount of effort, no doubt the overall quality of the enterprise is a big improved. First half of 2001, 45 sets of products have been tried 28 stations in the power line to run, run the shortest one and several months, including Shen become a new product 50000kVA/110kV transformer has been in operation for five years, subject to the user’s Welcome. The factory test data obtained on the basis of improved product design structure, as a standard, mass production input power, so the later is not to short circuit accident statistics.
State Power Corporation of China, Wuhan High Voltage Research Institute Electric Power Research Institute from 1995 to 1999, statistics show that the transformer short-circuit accident from the past 50% to 40%, mainly due to the high reliability of the transformer over a number of operational bring the system to improve reliability, it should be said, initially curbed the 110V transformer short circuit level.
110kV class transformer short-circuit test should further expand the comprehensive test case
At present the normal supply of 110V power transformer factory class with 60, it did 110kV class transformer short-circuit test facility is only 100, about 55% of the few factories are preparing the conditions to do short-circuit test, which requires the user to vigorously support, active use of the product has been tested, let it play a role in the system. Speak on the manufacturing plant, from design, process to work on the material well enough to prepare, raise funds, put into practice. Should also be noted, did not short-circuit test transformer factory, should seize the time, so it will not affect the order, and even loss of production status.
keywords: Auto Transformer, Autotransformer, Isolating Transformer
Knitting machine to enter the market independent research into the soft underbelly of the Warring States Period
Global Textile Network on August 9 hearing now, the world’s major producers of flat knitting machines in Germany, Japan, Switzerland, China and other countries. Among them, China since 2000, gradually into the computerized flat knitting machine development and production, and through technical track to achieve rapid development. It is understood that the global warming to further promote the rapid development of Chinese knitting industry in recent years, domestic knitting industry of knitting equipment, and increasing needs. In a number of knitting equipment, computer flat knitting machine knitting machinery market will undoubtedly become the new darling.
Market demand for computerized flat knitting machine
In recent years, China’s knitting industry has developed rapidly, and equipment upgrades without delay, the Chinese computer flat knitting machine market is also quite broad. In order to adapt to the development of knitwear enterprises to continuously improve the overall equipment level, to strengthen R & D, design and marketing operation, with a view to the current competitive market, occupying a place. As people of knitwear outerwear, fashion, comfortable, personalized requirements increase, an ordinary flat knitting machine can not meet the high quality and complex patterns of production requirements; the same time, rising labor costs, ordinary flat knitting machine production inefficient varieties replace the trouble, the market reaction is slow, difficult to meet the knitwear business development. Hand-knitting machine, semi-automatic flat knitting machine to gradually withdraw from the stage of history the industry development trend, replaced by a more advanced computer knitting machine. Cheap computer flat knitting machine made by its many small and medium knitting firms. China’s computer industry is still in the cross-machine-based development stage, the current annual output of 40,000 units. According to the relevant market analysis, the next three years, the domestic market for computer flat knitting machine, the annual demand will reach 10 million units, market development is very huge.
China Computerized Flat knitting machine set up R & D Centre
For the development of national industry, to reduce the domestic computer flat knitting machine with the gap between the level of international advanced equipment to enhance the capability of independent innovation, enhance computer flat knitting machine knit products in national and global competitiveness. June 28, China knitting knitting machine computer application technology R & D center was established, and in Changshu Jinlong Machinery Co., Ltd. R & D center of the “experimental base.” The collection of domestic R & D Center University, supply of raw materials, knitting equipment, apparel manufacturing, finishing, technical services and other areas of the advantages of unit strength, formed from the design, supply of raw materials, equipment, technical services, processing, production, etc., and in downstream of the docking and cooperative aspects of organic, computer flat knitting machine knitting to achieve the effective integration of products and resources to promote the field of computerized flat knitting machine knit the whole industry chain development as the goal, cooperation of industry chain development will be the inevitable trend of future development.
Computerized flat knitting machine market situation
This year, computer flat knitting machine business sales situation is very good, high-tech products such as automatic computer flat knitting machine with a cost-effective because of the characteristics favored by customers. From 2010 China International Textile Machinery Exhibition ITMA Asia Exhibition learned, computerized flat knitting machine companies gain a lot of orders.
Behind the hot, naturally, hidden problems. Domestic production companies a few computerized flat knitting machine, but the real development business is very small. Market, many companies have to buy the same parts, same controller, bought the next assembly, and OEM sales. Defame each other computerized flat knitting machine companies, the price war phenomenon is not unusual.
At present, the disadvantages of hand-knitting machine, and the phenomenon of recruitment difficulties led to a trend: the computer will gradually replace the hand-knitting machine knitting machine in the domestic market. Of course, most small and medium factories in the purchase of equipment will take into account funding, compared to a few hundred dollars in hand-knitting machine price, the price of computer flat knitting machine so that some manufacturers are still unacceptable. Meanwhile, the development of computerized flat knitting machine made relatively short time, many technical difficulties could not break through, weaving performance and after-sales services, less on imported computerized flat knitting machine, which is business to consider. Other than price, computerized flat knitting machine is also a business service issues the focus of attention, has an excellent after-sales service team, no doubt to the knitting needle playing a strong-centering agent. Learned from knitting enterprises, economic computerized flat knitting machine is still the first choice of SMEs.
New computerized flat knitting machine
2009 Tange eldest grand launch of a new computerized flat knitting machine LIBRA3.130. GMF2.130 computerized flat knitting machine, this machine is Gemini2.130 models developed on the basis of further out, is the world’s first triangular pneumatic control, so closely woven into the possible degree of computerized flat knitting machine. GMF2.130 type computerized flat knitting machine is simple, efficient production, and low power, the greatest cost savings.
February 5, 2010, Haina first dual-system prototype computerized flat knitting machine 5G formally successful downline. This marks the Ka Ying been completely mastered the dual system 5G computerized flat knitting machine production technology, PC-weaving industry in China left an indelible mark. In the pursuit of excellence in practice, Jia Ying who continue to explore, and gradually develop their own brand on the road, and assumed “Made in China” the social responsibility of computer flat knitting machine, knitting machine which set a new benchmark for China.
From the current development level, import the computer is not popular in China cross-confidential one to two years can do. Compared to the Japanese island of fine, German Stoll Wuliushiwan price, Kerry major 3G computerized flat knitting machine is only 100,000 less than the price. Therefore, the price advantage of view, Kerry major 3G computerized flat knitting machine sweater is still the first choice for replacement equipment. Kerry could have used with the imported machines, after-sales service are reliable.
Face the current market, the vagaries of the environment, with high efficiency, reduce labor advantages of computerized flat knitting machine in order to maintain strong sales. In addition, the development of computerized flat knitting machines to meet the technological transformation of enterprises, structural adjustment and industrial upgrading needs. At present, hand-knitting machine with about 1.6 million units, computerized flat knitting machine is only 10 million units, while the computer instead of hand knitting machine knitting machine industry and industrial upgrading is an inevitable trend. Domestic market demand for computer flat knitting machine has only just begun, the industry generally believe that computer flat knitting machine for a long period of time will maintain steady growth.
keywords: Auto Transformer, Autotransformer, Isolating Transformer