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本文简介了西门子公司开发的燃气—蒸汽联合循环发电装置的优点,该机组的热效率已达到60%,为世界上联合循环发电装置的最高效率。 相似文献
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火电机组供电煤耗与电厂产能息息相关,为提高火电产能及其收益,有必要对火电机组供电煤耗进行优化,应用随机森林回归算法可从历史数据中挖掘机组供电煤耗与主蒸汽压力、主蒸汽温度等相关参数的回归模型,并以机组供电煤耗最低为目标条件,提出使用遗传算法优化方法搜索实时工况下最优运行参数控制策略。通过对某机组进行测试,结果表明,基于随机森林回归算法的火电机组供电煤耗遗传优化模型可有效减少机组供电煤耗,为发电企业提供优化建议,实现对发电成本的优化控制。 相似文献
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风电和光伏发电具有间歇性和随机性,为了降低在多源联合发电系统中的弃风弃光率,采用含氢储能系统和火电机组配合来平滑风电和光电机组出力。文中以系统运行成本最小和弃电惩罚成本最小为目标,以系统功率平衡、火电机组出力和爬坡、热备用、风电和光电出力及储能系统储氢罐容量、电解槽和燃料电池功率等为约束条件构建了多源联合发电系统日前调度模型。通过YALMIP工具箱对模型进行编程,并调用CPLEX对编写的程序进行求解。对含有风电、光电、火电机组以及储能系统的多源联合发电系统进行算例分析,通过对比有无储能系统的弃风弃光量和系统总运行成本,证明了含氢储能系统可以有效降低系统的弃风弃光率,并提高系统的经济性。 相似文献
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为满足发电企业对安全生产、高效管理的更高要求,本文以某火电企业为对象,研究并构建火电企业精细化集中监管平台.火电企业精细化集中监管平台是机组、电厂、公司三层一体化的生产集中监管平台,通过稳定、准确地采集下属各火电企业生产的实时数据,实现了生产数据的存储、统计分析、平台网页展示和对生产过程、主辅机状态实时监管及数据分析.实践证明精细化集中监管平台在确保火电企业安全生产和提升管理效率具有较强现实意义和推广价值. 相似文献
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本文将熵权法应用到发电企业火电机组可靠性评价中,客观地确定了评价指标的权重;同时,应用TOPSIS法对发电企业进行实例评价,结果证明了其实用性与可信度。 相似文献
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The global electrical energy consumption is rising and there is a steady increase of the demand on the power capacity, efficient production, distribution and utilization of energy. The traditional power systems are changing globally, a large number of dispersed generation (DG) units, including both renewable and nonrenewable energy sources such as wind turbines, photovoltaic (PV) generators, fuel cells, small hydro, wave generators, and gas/steam powered combined heat and power stations, are being integrated into power systems at the distribution level. Power electronics, the technology of efficiently processing electric power, play an essential part in the integration of the dispersed generation units for good efficiency and high performance of the power systems. This paper reviews the applications of power electronics in the integration of DG units, in particular, wind power, fuel cells and PV generators. 相似文献
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随着我国人口不断增长和经济的飞速发展,淡水资源匮乏的形势日趋严重。海水淡化作为一种开辟新水源的新技术,已经成为世界上公认的解决淡水短缺问题的最佳方案。由于海水淡化成本在很大程度上取决于消耗电力和蒸汽的成本,而沿海地区火电厂低品位的蒸汽较多,如汽轮机做过功的蒸汽,各种废热等等,往往因品味太低无法充分利用,若直接排入大气则会造成极大的浪费,甚至会污染环境。利用火电厂无法利用的废热蒸汽作为动力蒸汽,采用低温多效蒸馏的海水淡化工艺,实施水电联产,即能充分发挥火电厂的优势,又能实现节能环保这一终极工业目标,同时丰富了可贵的淡水资源。 相似文献
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随着社会的进步和发展,人们对于清洁能源的需求逐渐增大,因此,针对太阳能的开发利用和实践研究开始成为重点的研究对象。传统的太阳能热发电技术使得太阳能源没有得到充分的利用,很多能量被浪费。相关的研究资料和实验证明,碟式太阳能热发电在各种太阳能热发电中效率最高、应用效果最好,据此,我们选择碟式太阳能斯特发电系统作为研究对象,希望可以提高太阳能的综合利用效率,为相关人员起到抛砖引玉的作用。 相似文献
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Supplying the electronic equipment by exploiting ambient energy sources is a hot spot. In order to achieve the match between power supply and demands under the variance of environments at real time, a reconfigurable technique is taken. In this paper, a dynamic power consumption model by using a lookup table as a unit is proposed. Then, we establish a system-level task scheduling model according to the task type. Based on single instruction multiple data (SIMD) architecture which contains a processing system and a control system with a Nios Ⅱ processor, a practical dynamic reconfigurable system is built. The approach is evaluated on a hardware platform. The test results show that the system can automatically adjust the power consumption in case of external energy input changing. The utilization of the system dynamic power of their portion is from 80.05% to 91.75% during the first task assignment. During the entire processing cycle, the total energy efficiency is 97.67%. 相似文献
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《Spectrum, IEEE》2007,44(4):14-15
The use of energy in American homes is still being developed for better efficiency. The idea of having a power plant in your home's basement instead is a consideration. Combined heat and power (CHP) systems can utilize up to 90 percent of a fossil fuel's energy by simultaneously generating heat and electricity on-site, reducing energy consumption and slashing utility bills. Such systems already power several buildings and they are widely used for district heating in other countries. This paper discusses the idea of having your basement furnace generate electricity to the point that it can power and heat individual homes. This is achieved by the use of a micro-CHP unit 相似文献