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《中华人民共和国可再生能源法》正式颁布
2月28日,十届全国人大常委会第十四次会议顺利通过表决,国家主席胡锦涛签署第三十三号主席令,颁布了我国第一部《中华人民共和国可再生能源法》,该法将于2006年1月1日起正式施行。 相似文献
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随着能源供需矛盾的加剧,各国都在努力加大包括地热在内的可再生能源在能源供给中的比重,构建多元化能源结构。地热资源因其稳定可靠、成本低廉、清洁环保等优点逐渐被各国所认识,开发热度逐年增加。主要介绍了随着地热发电业务近年来迅速增长,全球地热发电总装机容量逐年增加,干蒸汽发电、地热水发电技术日益成熟,干热岩发电技术获得突破,并开始商业化应用。并指出在国家产业政策和技术支持下,中国地热发电业务将快速发展。 相似文献
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J.Lund B.Sanner L.Rybach R.Curtis G.Hellstrom 《地热能》2005,(6):31-32
过去的10年中,地热热泵在约30个国家的年增长为10%,是全世界增长最快的可再生能源应用之一。目前全世界的装机容量估计约1.2万MW。(热功率),年用能约7.2万TJ(2万GWh)。实际安装110万台左右。 相似文献
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近年来,地热勘探业发展迅速,致使该市场竞争尤为激烈,为了有效地规范地热勘探市场和评估各勘探单位的资质与能力,有必要对勘探单位进行必要的评估。本文利用AHP算法从确定评价单元、建立评价层次体系、构建判断矩阵和一致性的分析,最终得出多个单位的评价总捧序.此法为各种勘探组织进行综合评价提供了一条新思路。 相似文献
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作为可再生能源的一员,地热能资源丰富。我国藏滇地热带有高温地热资源分布,可用于地热蒸汽发电;中低温地下热水直接利用的能量居世界第一,其中的温度较高者,可以先发电,再将尾水作综合利用。我国已开始干热岩地热资源发电领域的研究。 相似文献
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《International Journal of Hydrogen Energy》2022,47(37):16424-16439
The study aims to optimize the geothermal and solar-assisted sustainable energy and hydrogen production system by considering the genetic algorithm. The study will be useful by integrating hydrogen as an energy storage unit to bring sustainability to smart grid systems. Using the Artificial Neural Network (ANN) based Genetic Algorithm (GA) optimization technique in the study will ensure that the system is constantly studied in the most suitable under different climatic and operating conditions, including unit product cost and the plant's power output. The water temperature of the Afyon Geothermal Power Plant varies between 70 and 130 °C, and its mass flow rate varies between 70 and 150 kg/s. In addition, the solar radiation varies between 300 and 1000 W/m2 for different periods. The net power generated from the region's geothermal and solar energy-supported system is calculated as 2900 kW. If all of this produced power is used for hydrogen production in the electrolysis unit, 0.0185 kg/s hydrogen can be produced. The results indicated that the overall energy and exergy efficiencies of the integrated system are 4.97% and 16.0%, respectively. The cost of electricity generated in the combined geothermal and solar power plant is 0.027 $/kWh if the electricity is directly supplied to the grid and used. The optimized cost of hydrogen produced using the electricity produced in geothermal and solar power plants in the electrolysis unit is calculated as 1.576 $/kg H2. The optimized unit cost of electricity produced due to hydrogen in the fuel cell is calculated as 0.091 $/kWh. 相似文献
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为了克服传统MPPT方法的一些缺点,更好地实时调整光伏系统的最大功率输出,提出了基于RBF神经网络和遗传算法(GA)的控制技术。采用不依赖函数模型的遗传算法进行全局寻优锁定,训练RBF神经网络的最大功率点参数,由离线训练好的RBF网络对系统进行实时控制。采用Matlab建立的仿真模型验证了所提出方法的可行性和有效性。 相似文献
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The operation condition of the cold-end system of a steam turbine has a direct impact on the economy and security of the unit as it is an indispensible auxiliary system of the thermal power unit. Many factors influence the cold-end operation of a steam turbine; therefore, the operation mode needs to be optimized. The optimization analysis of a 1000 MW ultra-supercritical (USC) unit, the turbine cold-end system, was performed utilizing the back propagation (BP) neural network method with genetic algorithm (GA) optimization analysis. The optimized condenser pressure under different conditions was obtained, and it turned out that the optimized parameters were of significance to the performance and economic operation of the system. 相似文献
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在风机齿轮箱故障诊断过程中,针对由于故障数据稀疏导致模型建立困难的问题,提出一种使用改进人工蜂群算法(IABC)优化Elman神经网络的故障诊断模型。该模型通过建立齿轮箱正常状态下的温度模型,采用残差分析,得到齿轮箱的故障状态,降低了建立模型的复杂度。采用IABC对Elman神经网络的相关参数进行优化,解决了Elman网络收敛速率慢、易陷入局部最优的问题。在IABC算法中,观察蜂阶段采用动态搜索策略,实现搜索能力和开发能力的平衡;在侦查蜂阶段,通过引入混沌变量扰动,增大种群多样性,进而达到全局最优。通过华北某风电场历史数据进行实验,结果表明,IABC与Elman神经网络的结合可对风机齿轮箱故障状态进行识别,且诊断正确率较高,可应用于实际故障诊断。 相似文献
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A central composite design was carried out to investigate the effect of temperature, initial pH and glucose concentration on fermentative hydrogen production by mixed cultures in batch test. The modeling abilities of the response surface methodology model and neural network model, as well as the optimizing abilities of response surface methodology and the genetic algorithm based on a neural network model were compared. The results showed that the root mean square error and the standard error of prediction for the neural network model were much smaller than those for the response surface methodology model, indicting that the neural network model had a much higher modeling ability than the response surface methodology model. The maximum hydrogen yield of 289.8 mL/g glucose identified by response surface methodology was a little lower than that of 360.5 mL/g glucose identified by the genetic algorithm based on a neural network model, indicating that the genetic algorithm based on a neural network model had a much higher optimizing ability than the response surface methodology. Thus, the genetic algorithm based on a neural network model is a better optimization method than response surface methodology and is recommended to be used during the optimization of fermentative hydrogen production process. 相似文献
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对燃气轮机润滑油系统常见故障原因进行了分析,并结合专家知识建立了润滑油系统故障知识库;在此基础上将RBF人工神经网络引入燃气轮机装置故障诊断中来,由于采用了一种动态RBF网设计方法,使得神经网络的规模较小同时具有较高的泛化能力,提高了神经网络的诊断速度及准确性. 相似文献