关键词：新能源；生物医药；并购风向

查看摘要 索取原文[1页]

High-speed extended term (HSET) time domain simulation (TDS) is intended to provide very fast computational capability to predict extended-term dynamic system response to disturbances and identify corrective actions. The extended-term dynamic simulation of a power system is valuable because it provides ability for the rigorous evaluation and analysis of outages which may include cascading. It is important for secure power grid expansion, enhances power system security and reliability, both under normal and abnormal conditions. In this chapter the design of the envisioned future dynamic security assessment processing system (DSAPS) is presented where HSET-TDS forms the core module. The power system is mathematically represented by a system of differential and algebraic equations (DAEs). These DAEs arise out of the modeling of the dynamic components such as generators, exciters, governors, automatic generation control, load tap changers, induction motors, network modeling and so on. To provide very fast computational capability within the HSET-TDS, this chapter motivates the need for high performance computing (HPC) for power system dynamic simulations through detailed modeling of power system components and efficient numerical algorithms to solve the resulting DAEs. The developed HSET-TDS is first validated for accuracy against commercial power simulators (PSSE, DSA Tools, Power-World) and then it is compared for computational efficiency. The chapter investigates some of the promising direct sparse linear solver for fast extended term time domain simulation and makes recommendation for the modern power grid computations. The results provide very important insights with regards to the impact of the different numerical linear solver algorithms for enhancing the power system TDS.

关键词：电力系统；动态

查看摘要 索取原文[27页]

Tidal energy, offshore wind energy, and onshore wind energy can be converted to electricity at a central ground location by converting their respective energies into high-pressure hydraulic flows that are transmitted to a system of hydraulic generators by high-pressure pipelines. The high-pressure flows are then efficiently converted to electricity by a central hydraulic power plant, and the low-pressure outlet flow is returned. All gears and submerged electronics are completely eliminated (JPL/Caltech patents granted and pending). The Department of Energy (DOE) is presently supporting a project led by Sunlight Photonics to demonstrate a 15 kW tidal hydraulic power generation system in the laboratory. Sunlight Photonics will issue a separate report on this successful experimental phase. Another portion of this DOE project involves sizing and costing a 15 MW commercial tidal energy plant, which is the subject of this Final Report. For this task, Atlantis Resources Corporation s demonstrated 18-m diameter tidal blades operate in a nominal 2.6 m/sec tidal flow to produce one MW per set of tidal blades. Fifteen blade units are submerged in a deep tidal area, such as Maine s Western Passage. Each set of blades is attached to commercial-offthe-shelf (COTS) Hagglund radial piston pumps, and all pumps are connected to a hig-hpressure (20 MPa, 2900 psi) line that is 35 cm ID. High-pressure HEPG fluid is transported 500 meters to a parallel series of onshore, COTS axial piston hydraulic generators. HEPG is an environmentally-friendly, biodegradable, water-miscible fluid. The total cost of producing energy with this tidal power plant is estimated to be $0.15/kW-hr, which is between the cost of wind energy and solar energy. Hydraulic adaptations to Ocean Renewable Power Company s (ORPC s) cross-flow tidal turbines are also discussed. Costs to convert a submerged ORPC tidal system to a hydraulic device with onshore power generation are about 50 cents per watt, minus the cost of ORPC s expensive submerged generators, which would be entirely removed. Although not originally planned, applications of Hydraulic Energy Transfer (HET) for wind energy have also been added to this report. For wind energy that is onshore or offshore, a gearless, high-efficiency, COTS, radial piston pump can replace each set of troublesome, top-mounted gear-generators for conventional wind turbine systems. Environmentally friendly HEPG fluid is then pumped to a central system of easily serviceable ground generators, which consist of a parallel series of axial piston hydraulic generators. Total hydraulic/electrical efficiency of 81is close to that of conventional wind turbines at full-rated wind speeds. Total HET efficiencies increase at slower speeds, however, while conventional wind turbine efficiencies decrease significantly. In addition, all troublesome gears are eliminated for HET wind and tidal energy systems.

关键词：电力系统；潮汐；风力

查看摘要 索取原文[29页]

Development and application of SmartGrids or Intelligrids, including roll-out of smart meters and electrical vehicles, is of a great importance if the UK and other countries are to achieve significant carbon emission reductions and realize sustainable energy systems. These new grids will offer the opportunity to increase the level of renewable energy integrated into the system. They will also allow customers, including small households, to actively participate and adjust their demand depending on energy availability and price. This will further lead towards improved energy efficiency, as well as offer possibilities to reduce overall consumption and reduce or postpone investments into new large generation and infrastructure facilities. To achieve these goals, a number of technical, economical and policy issues need to be addressed and resolved. The development of new generations of extremely fast software tools that can solve power system problems with large number of nodes will also be important to help resolve these issues. For example, distribution system and network operators, as well as trading entities such as aggregators, will get a better coordination of system operation though the possibility to engage with even smaller generators, and especially smaller customers. This control at lower voltage levels will allow for the aggregation of responses which will then propagate to higher voltage levels. Currently, the discussion regarding the operation of future power systems is looking into two different options. One is to develop methodologies that will allow decentralization of network operation with the reduced level of coordination at the high level of system operation. However, the new software developed to exploit the benefits of the HPC architecture may open a possibility for businesses and policy makers to investigate and compare operation of centralized vs. decentralized operation over areas with large number of participants.. These new HPC power system analysis tools will enable more frequent price signal calculations and bring the possibility to define policies which will ensure engagement with customers to reduce their energy consumption or shift it towards off-peak periods, as well as allow for the coordination of charging of electric vehicles and their use as storage devices. Such tools will be useful for both decentralized and centralized operation, however they will be crucial for the latter.

关键词：电力系统；电力网络

查看摘要 索取原文[20页]

A stand alone, mobile photovoltaic power system along with a cable deployment system was designed and constructed to take part in the Desert Research And Technology Studies (RATS) lunar surface human interaction evaluation program at Cinder Lake, Arizona. The power system consisted of a photovoltaic array/battery system. It is capable of providing 1 kW of electrical power. The system outputs were 48 V DC, 110 V AC, and 220 V AC. A cable reel with 200 m of power cable was used to provide power from the trailer to a remote location. The cable reel was installed on a small trailer. The reel was powered to provide low to no tension deployment of the cable. The cable was connected to the 220 V AC output of the power system trailer. The power was then converted back to 110 V AC on the cable deployment trailer for use at the remote site. The Scout lunar rover demonstration vehicle was used to tow the cable trailer and deploy the power cable. This deployment was performed under a number of operational scenarios, manned operation, remote operation and tele-robotically. Once deployed, the cable was used to provide power, from the power system trailer, to run various operational tasks at the remote location.

关键词：电力系统;沙漠之鼠

查看摘要 索取原文[83页]

In April 2009, NASA Glenn Research Center (GRC) formed an integrated product team (IPT) to develop a Small Radioisotope Power System (SRPS) utilizing a single Advanced Stirling Convertor (ASC) with passive balancer for possible use by the International Lunar Network (ILN) program. The ILN program is studying the feasibility of implementing a multiple node seismometer network to investigate the internal lunar structure. A single ASC produces approximately 80 W(sub e) and could potentially supply sufficient power for that application. The IPT consists of Sunpower, Inc., to provide the single ASC with balancer, The Johns Hopkins University Applied Physics Laboratory (JHU/APL) to design an engineering model Single Convertor Controller (SCC) for an ASC with balancer, and NASA GRC to provide technical support to these tasks and to develop a simulated lunar lander test stand. A controller maintains stable operation of an ASC. It regulates the alternating current produced by the linear alternator of the convertor, provides a specified output voltage, and maintains operation at a steady piston amplitude and hot end temperature. JHU/APL also designed an ASC dynamic engine/alternator simulator to aid in the testing and troubleshooting of the SCC. This paper describes the requirements, design, and development of the SCC, including some of the key challenges and the solutions chosen to overcome those issues. In addition, it describes the plans to analyze the effectiveness of a passive balancer to minimize vibration from the ASC, characterize the effect of ASC vibration on a lunar lander, characterize the performance of the SCC, and integrate the single ASC, SCC, and lunar lander test stand to characterize performance of the overall system.

关键词：电力系统；同位素

查看摘要 索取原文[26页]

关键词：中国电建；赞比亚；最大水电站；扩机项目建成

查看摘要 索取原文[1页]

2013年以来，主要能源消费国出台了一系列政策以促进能源来源多元化、提高能源自给率。日本发布新版《能源白皮书》，提出取消“零核电”目标；同时积极实施多元化的能源战略以减轻LNG的进口压力。俄罗斯出台一系列政策措施提高能源利用效率，大力发展天然气汽车消化国内过剩的天然气。由于页岩油、致密油产量的快速增长，美国石油的对外依存度降至40%以下；若能效翻倍计划和减排计划能够顺利实施，美国的能源自给能力还将进一步提升。欧盟继续实施清洁燃料战略，计划大力发展基础设施，推行替代燃料站点建设，并将继续维持核电的发展。印度通过提高天然气价格、发展页岩气、扩大天然气利用等措施大力发展天然气，力争在2030年实现能源自给。这些政策的出台，表明了主要能源消费国保障本国的能源安全的良好愿望，也将在一定程度上影响全球能源市场的走势。但是部分政策的落实还存在一定的难度，需要消费国政府采取更加有效的措施以保障本国能源战略目标的实现。

关键词：日本；俄罗斯；美国；欧盟；印度；能源自给率；核电；新能源；可再生能源

查看摘要 索取原文[17页]

2013年9月3-4日，由东北亚天然气和管道论坛、中国亚洲天然气和管道合作研究中心主办的第十三届东北亚天然气和管道国际大会在成都召开。来自中国、日本、韩国、俄罗斯、蒙古五国的论坛成员单位，印度、新加坡、俄罗斯政府驻华机构，埃克森美孚、BP等国际油气公司，中国石油、中国石化、中国海油等中国石油公司，国家发改委能源研究所、国土资源部油气资源战略研究中心、美国IHS、伍德麦肯兹等国内外能源研究机构，以及新华社、中国日报、四川石油新闻中心等媒体代表共计110余人参加会议。大会以“多边合作共赢的东北亚天然气和管道合作机制”为主题，围绕“东北亚各国能源政策”、“东北亚国家天然气与市场新趋势”、“构建东北亚多边合作机制”三个专题进行了广泛而务实的交流研讨，并通过了《成都倡议书》。本次会议成果必将对构建多边合作共赢的东北亚天然气和管道合作机制产生积极的推动作用。

关键词：合作共赢；东北亚；天然气；管道合作

查看摘要 索取原文[24页]

关键词：光伏；发电运营；监管

查看摘要 索取原文[1页]