Numerical Calculation of the Impact of Offshore Wind Power Stations on Hydrodynamic Conditi

初二英语新能源技术与应用阅读理解30题1<背景文章>Solar energy is one of the most important forms of renewable energy. It comes from the sun and can be converted into electricity or heat. The principle of solar energy is based on the photovoltaic effect. When sunlight hits the solar panels, the photons in the sunlight excite the electrons in the solar cells, causing them to flow and generate an electric current.Solar energy has many advantages. Firstly, it is clean and environmentally friendly. It does not produce any pollutants or greenhouse gases. Secondly, it is abundant and free. The sun shines every day, so we can always get solar energy. Thirdly, it is reliable and long-lasting. Solar panels can last for more than 25 years with proper maintenance.Solar energy can be used in many applications. For example, it can be used to power homes, businesses, and schools. It can also be used to charge electric vehicles and power remote communication devices. In addition, solar energy can be used in agriculture to pump water and power irrigation systems.1. What is the principle of solar energy?A. Based on the wind power effect.B. Based on the hydro power effect.C. Based on the photovoltaic effect.D. Based on the nuclear power effect.答案：C。

CONTENTS04 POWER TRANSFORMERS06 AT TAPCHANGERS08 AE TAPCHANGERS10 DESIGN 12 MANUFACTURING 14 TEST SERVICESBRUSH T ransformers is globally renowned for the quality of its products, innovation and service. Our markets include the utility, oil, petrochemical, coal, steel and rail industries worldwide. We focus on working with our clients to provide solutions tailored to meet their exact requirements.Our ongoing investment programme concentrates on the implementation of modern technology, research, product development and ensuring our facilities are of the calibre to support our plans for long-term growth.We design and manufacture to many British, European and International standards and have first class test facilities to ensure that the quality of the product is prevalent. The company maintains AST A third-party accreditation to quality standard ISO 9001:2008, environmental standard ISO 14001 and health and safety standard OHSAS 18001.ENERGY SOLUTIONS FOR THE GLOBAL POWER INDUSTRYWith over one hundred years of manufacturing experience in the transformer industry, BRUSH T ransformers are the largest manufacturer of liquid filled power transformers based in the United Kingdom.BRUSH T ransformers supply a comprehensive range of transformers for a range of applications;n S ystem transformers for the UK, overseas utility network operators and many private network operatorsn G enerator step up transformers for use with; hydro-electric generation schemes, gas turbine generator stations and CHP plants n G rid connection transformers for wind generation schemes n P ower transformers for industrial applications, traction systems, petrochemical projects, offshore oil and gas production facilities and special applications up to 132kVn S eries current limiting reactors for industrial applicationsn M otor unit transformers for industrial applications and petrochemical plants n R ectifier transformers for traction systems.Where required, BRUSH are also able to supply transformers with alternative cooling systems such as forced air cooled/forced oil cooled and water cooled using heat exchangers.For 33kV systems BRUSH manufacture transformers using alternative cooling fluids such as Midel and FR3, where transformers are either located inside buildings giving rise to issues related to increase fire risk or where there are environmental concerns. For traction systems BRUSH are able to provide; 132/25kV traction supply transformers, 25-0-25kV auto transformers, 25kV 300Amp trackside booster transformers.Noise levelsBRUSH offers T ransformers that are capable of emitting low noise levels. By utilising the latest electrical steel material and manufacturing techniques, the noise levels can be attenuated to low levels, which is particularly important in built up areas.No-Load LossesThe overall lifetime cost of a transformer is related to the losses generated by the unit. The no-load losses apply throughout the year and BRUSH has a wide range of electrical steels grades available to minimise the losses generated by the core to reduce the capitalised cost.UK reference list: Overseas reference list:UK Power Networks Bermuda Electric Light Company (BELCO)Western Power Distribution Abu Dhabi Water & Electricity Authority Northern Power Grid Bahamas Electricity Corporation Energy North West ShellScottish Power AramcoScottish & Southern Energy NIOCT amesis ITSPOWER TRANSFORMERSThe A T range of single compartment units with high-speed resistor transition is designed for three-phase systems with voltages of 44kV and 66kV line end or 132kV neutral end and nominal rated current of 300A.A maximum of 17 tapping positions (16 steps) 15 possible for linear regulation and 33 tapping positions (32 steps) for reversing of coarse/fine regulation.The A T tapchanger is designed such that power flow can be handled in either direction at full-rated current. The A T is a flange-mounted tapchanger where the oil in the switch compartment is kept separate at all times from the oil in the main transformer.n C ompactn L inear, reversing or coarse/fine versionsn S uitable for 52kV, star or delta windingsn 400A version (linear only)n S uitable for 145kV star winding (neutral end only)n S ingle-phase version availablen V ertically-mounted option also availablen M anufactured in accordance with IEC 60214 and also complies with many other national and international standards.Key features of A T and AE tapchangersn C ompactn B i-directional power flown H igh speed resistor on-load selector switchn E ase of maintenancen L ow oil contentn U p to 17 positions (linear) or 33 positions (reverse or coarse/fine)n F ully automatic or manual operation.The AE series on-load tapchangers are built on the successful results of the design of the A T range. The AE uses many common parts from the A T including the complete drive mechanism. This range has a maximum of 17 tapping positions (16 steps) and is possible for linear regulation and 33 tapping positions (32 steps) for reverse or coarse/fine regulation.The equipment may be used to regulate three-phase transformers designed for system voltages of 33kV and 66kV at any position in the winding. The AE may also operate on transformers designed for 132kV earthed neutral three-phase systems regulating at the neutral end of the winding. The maximum current rating is 500A, with overload capability in accordance with IEC 60354 and IEC 60076-7.n 500A current ratingn S uitable for 33kV or 66kV systems, line or neutral end n S uitable for 132kV systems (neutral end only)n M aximum 650kVA breaking capacityn D esigned in accordance with IEC 60214 and also complies with many other national and international standardsBenefits of the A T, A TV, and AE on-load tapchangers n L ower overall maintenance times and costs to the end user n S eparate tapchanger oil ensures 100% accurate D.G.A of transformers n C an easily be housed in noise enclosuresn R etrofit tapchangers more easily accommodated n B etter for anti-tracking surfacesBRUSH T ransformers strive to ensure that our products and services consistently provide the best value, in the most cost-effective and suitable format for each of our customers individual needs.From the initial stage of any project, the design department employ a wealth of experience to develop product specifications, combining a high degree of engineering integrity with the necessary commercial, practical design and quality considerations. This ensures that our customers receive the optimum design for their specific product requirements.Sustained Design Excellence is achieved via a program of continuous improvement. The implementation of modern technology, research and product development, coupled with our long experience in the field, allows us to refine the design process whilst taking into account changing customer requirements, material advances and technical design improvements. When assessing any transformer design it is essential that critical performance values are accurately simulated.BRUSH T ransformer’s design program suite is a knowledge-based system with capabilities for both 2D and 3D finite-element modelling. The design software suite effectively captures many years of transformer design knowledge and experience. Over recent years, the use of finite-element modelling methods for transformer design and analysis has proven to be an extremely powerful tool. We employ a fully integrated collection of software modules capable of the generation and solution of electrostatic and electromagnetic finite element models.BRUSH have a large range of core steel grades available to optimise the design, allowing specific performance characteristics to be achieved. BRUSH also utilise proven coil designs to maximise the performance and minimise losses.Bespoke design software derived from successfully established practices and techniques is combined with the sound numerical techniques encompassed within finite-element methodology to produce the optimum design for each customers requirement.BRUSH T ransformers utilise the latest in CAD technology, investing in software packages including AutoDesk Inventor, ANSYS FEA and Slim Electromagnetic FEA. This technology enables us to adopt a more streamlined approach to the process of planning, developing and manufacturing of products. This in turn creates an ideal platform for lean product development and achieving increased response rates with our customers.DESIGNTHE COREEach transformer core is produced using a computer-controlled Georg cutting line. Using interleaved laminations of cold rolled, grain orientated, low loss electrical sheet steel conforming to BSEN 10107. The core employs a mitred step-lap design ensuring minimum noise and loss levels with uniform flux distribution throughout the magnetic circuit.WINDINGS AND INSULATIONAll windings are manufactured to exacting standards in order to maintain strict dimensional tolerances. Clamping to a pre-determined load pressure during manufacture ensures that each winding is able to withstand the excessive axial forces, which may result from external sources.All principal components of insulation are pre-fabricated from electrical grade insulating board; processed to ensure electrical and mechanical stability throughout the temperatures found in operational service.CORE-COIL ASSEMBL YEach core-coil assembly is rigidly braced using steel frames. Optimum dielectric strength is achieved via processing in accordance with rigorous in-house quality procedures.T ANK CONSTRUCTION AND FINISHT ransformer tanks are manufactured using mild steel, which is electrically welded. Cooling is effected by pressed plate radiators, electrically welded and independently pressure tested. Metal is pre-treated by shot blasting, then immediately covered with a high performance industrial paint finish, suitable for highly corrosive environments. This finish is designed to give maximum world-wide, long term protection in coastal, industrial, and general environments with suitable heat and oil resistance.FINAL ASSEMBL YCompleted core-coils are dried in thermostatically controlled vacuum ovens, fitted into the transformer tank and filled with oil under a vacuum. This is followed by an oil processing system using de-aerated oil. After the tanking process is complete the transformer is prepared for test.SHORT CIRCUIT CAPABILITYIn order to prevent deformation when subjected to short circuit forces, solid block end insulation, backed-up by substantial supporting frames is utilised. The axial end thrust under fault conditions is minimised by the suitable distribution of ampere turns over the length of the windings, and by ensuring that the design dimensions are closely adhered to during manufacture. T ransformers designed and constructed in this way are capable of withstanding the effect of short-circuit forces.MANUFACTURINGAt BRUSH T ransformers every transformer is subject to a comprehensive series of tests in compliance with the latest requirements contained in all relevant specifications. All the testing is carried out on site within one of BRUSH’s fully equipped test areas.The test facilities include a 7.8MVA generator driven by a 2500HP motor, a2.8MVA power regulator used in conjunction with capacitor banks (60 MVAr currently installed). These ratings can provide sufficient power for short circuit temperature rise testing at full ratings, for transformers up to 100MVA.BRUSH also has two multi-ratio plant transformers of 38MVA and 14MVA, a 2MVA 200Hz alternator for induced over-voltage testing and a Haefely SG A 1200-120 impulse testing system comprising of:n 1200kV, 120kJ per stage generatorn 2000kV voltage divider IEC 60060 – 1n 1200kV multiple chopping devicen Hias 743 high resolution impulse analysing system n 600kV overshoot compensation filter.T est area is equipped with:n H igh voltage capacitance dividers and AC peak voltmeters used for measurements up to 600kVn C apacitance and tan delta bridge for measurement of capacitance and loss anglesn T hree phase AC power analysers used in conjunction with precision current and potential transformers for the accurate measurement of transformer lossesn B ruel Kjaer sound level measuring equipment used for the measurement of transformer noise and spectrum frequency analysisn P artial discharge measurements can be made in pico-coulombs or micro-voltsn S weep Frequency response analysis.All the instrumentation is of a high standard and is calibrated and checked at regular intervals.TEST SERVICESINST ALLATIONWe can offer a complete installation service or alternatively supply a supervisor to oversee and guide the installation, testing and commissioning of your equipment. We offer complete method statements and risk assessments in accordance with our ISO9001 accreditation. Dedicated site quality plans are compiled for every site contract.BRUSH T ransformers has a worldwide reputation for the supply and installation of a varied range of electrical power transformers and tapchangers covering various applications and locations. These include land-based industrial facilities, marine and the oil and gas sectors both onshore and offshore.Our Aftermarket support team are able to provide an unrivalled degree of professionalism, reliability and efficiency when undertaking all manner of service activities involved with equipment installationsCOMMISSIONINGT o complement its market-leading position for supplying and installing transformers, we can provide highly qualified and competent commissioning engineers, who are able to undertake the complete electrical testing and commissioning of transformers and ancillary equipment.SAFETYAll personnel are supplied with and trained in the correct use of PPE. All work is pre-planned and method statements and risk assessments issued. Each team has one member trained in first aid.INSPECTIONSAs part of a comprehensive maintenance programme, BRUSH T ransformers offers a structured inspection scheme, which can be tailored to meet the operational needs of the installed equipment and facility. These inspections are available for all BRUSH T ransformers products in addition to third party equipment. By following a structured inspection programme, the equipment outage time is reduced to a known minimum period. It also provides a continuous appraisal of the equipment’s current condition. As a result of each inspection, potential problems arising can be addressed prior to them causing serious failure.MAINTENANCEThe notion that prevention is better than cure lies at the heart of any maintenance programme. BRUSH T ransformers Aftermarket support services are fully equipped to provide all existing operators with a customised support package. This may be adapted to suit each and every individual operator’s need, wherever the installation is situated.MAINTENANCE CONTRACTSBRUSH T ransformers can provide short and long term maintenance contracts. These support operators by:n E nabling a continuous mode of operation. The use of long-term maintenance and health care contracts may be developed to suit the customer’s needs n E nabling designation of inspection points, spare parts and recommendations for continued equipment performancen A ssist in reducing operating costs associated with unplanned outages as a result of equipment failures.FIELD REPAIRT o complement the inspection capabilities, we can offer a wide range of repair services. These are performed in the field where we have considerable experience working in vastly differing environments, including both onshore and offshore installations, worldwide.TRANSFORMERST ypical transformers field repair services offered include:n T ransformer refurbishmentn R adiator repair or replacementn C ooler equipment replacementn C able box replacementn O il processingn O il replacementn T apping switch modification/replacementn G asket seal replacementn T ransformer relocationn T ransformer up-rating.CONTROL SYSTEMST ypical power management and cooler control systems services offered include:n A utomatic Voltage Regulator fault finding and calibration n C ooler Control System fault finding and calibration n T ransformer protection relay testing.FACTORY REPAIRSWhen it is not possible to repair equipment in the field due to constraints such as space, environment or lack of suitable resources then BRUSH offer a factory based solution. BRUSH possesses comprehensive manufacturing facilities manned by professional personnel for repairing and overhauling equipment. These facilities are supported by technical and project functions to achieve complete customer satisfaction.T ypical transformer factory repair services offered include:n T ank replacementn W inding rewindn C ore replacementn T apchanger overhauln T ransformer upratingn H igh voltage testing facilitiesBRUSH have factory-based Aftermarket support facilities which include:n W orkshops with cleaning facilities and vacuum drying ovens n M odern machining and fabrication facilitiesn C oil manufacturing and core manufacturing facilitiesn A ssembly workshops including large capacity craneagen H igh voltage test facilitySPARESUsing the latest technology available, our data capture system enables us to identify component parts and provide necessary spares for either pre-commissioning or operational requirements.TRANSFORMER SERVICESBRUSH offers a team of fully skilled service engineers to provide full Aftermarket service available to tapchangers, 24/7/365. Within the business we have a fully dedicated spares/repairs department and team of fitters.SPARESSpare parts are available for all modern and obsolete models of on-load tapchangers and off-circuit tap selectors. All spare parts are genuine parts manufactured to the highest degree of quality, from original drawings, materials and tooling.In addition to manufacturing a full range of modern on-load tapchangers and off-circuit tap selectors.Associated tapchangers have a fully equipped repairs department, which specialises in the repair and refurbishment of old tapchangers. We will arrange to remove the faulty equipment from site, return it to the factory, repair or refurbish as required, return to site and install, test and commission as requested.Main features include:n M aintenance trainingn R outine maintenancen E ngineers site visit for assessment, inspection and reports on the tapchanger n E mergency repairsn S pare parts for tapchangersn M inor repair or overhauln C omplete tapchanger overhaul and repair at our factoryn R etrofitting modern units to replace older tapchangers allowing reduced maintenance costs for the future.TAPCHANGER SERVICESENERGY SOLUTIONS FOR THE GLOBAL POWER INDUSTRYBRUSHNOTTINGHAM ROAD,LOUGHBOROUGH,LEICESTERSHIRE,。

2007
Baseline 2050
BLUE Map 2050
4 000 3 000 2 000
1 000 0
-27% -36%
By 2050, coal, oil and gas demand are all lower than today under the BLUE Map scenario. 到2050年，在蓝色 情景下对煤炭，石油和天然气的需求都比今天低。
© OECD/IEA - 2010
Primary energy demand by fuel and by scenario按燃料和情景分类的一次能源需求
ENERGY TECHNOLOGY PERSPECTIVES 2010
Scenarios & Strategies to 2050
Mtoe
8 000 7 000 6 000 5 000
Scenarios & Strategies to 2050
Gt CO2
60 50 40 30 20 10
Other
Buildings Transport
Industry
Other transformation Power generation
0
2007 2030 2050 2030 energy technology revolution to
meet climate change and energy security challenges. 需要一场能源革命来应对气候变化和能源安全的挑战。 Some early signs of progress, but much more needs to be done. 一些早期进展的迹象，但还有许多工作要做。 Which technologies can play a role? 哪些技术可以发挥作用？ What are the costs and benefits? 成本和效益如何？ What policies are needed? 需要什么样的政策？

生态环境风力水力发电的作文素材英文回答：Wind and hydro power are two important sources of renewable energy that contribute to the protection of the environment. Both wind and water have the ability to generate electricity without emitting harmful gases or pollutants, making them clean and sustainable sources of energy.Wind power harnesses the energy from the wind to generate electricity. Wind turbines are used to capture the kinetic energy of the wind and convert it into electrical energy. These turbines consist of large blades that rotate when the wind blows. The rotating blades spin a generator, which produces electricity. Wind power is a popular form of renewable energy in many countries, with wind farms being set up in areas with strong and consistent winds.One advantage of wind power is its abundance. Wind is afree and unlimited resource, and it is available in many parts of the world. Wind turbines can be installed on landor offshore, depending on the availability of suitable locations. Another advantage is that wind power is cost-effective in the long run. Although the initial investment for setting up wind turbines may be high, the operational costs are relatively low. Once the turbines are installed, the cost of generating electricity from wind power is much lower compared to traditional fossil fuel-based power plants.Hydro power, on the other hand, harnesses the energy from flowing or falling water to generate electricity. Hydroelectric power plants are built near rivers or waterfalls, where the flow of water is strong and consistent. The force of the water is used to turn turbines, which in turn generate electricity. Hydro power is areliable source of energy, as the flow of water can be controlled to meet the demand for electricity.One advantage of hydro power is its high energy efficiency. Hydroelectric power plants can convert over 90%of the energy in flowing water into electricity, making it one of the most efficient forms of energy production. Another advantage is that hydro power plants can also serve as water reservoirs, providing water for irrigation, drinking, and industrial purposes. This dual-use of hydro power plants makes them even more beneficial to society.In conclusion, wind and hydro power are two important sources of renewable energy that have numerous advantages. They are clean, sustainable, and cost-effective sources of electricity generation. By harnessing the power of wind and water, we can contribute to the protection of the environment and reduce our dependence on fossil fuels.中文回答：风力和水力发电是两种重要的可再生能源，对环境保护起到了积极的作用。