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基于损耗评估的变压器选择的经济评价方法
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作者 唐丽艳 李卫东 《电工技术》 1993年第12期1-2,共2页
本文在对变压器损耗评估的基础上,考虑了电价上涨及资金时间价值等因素的影响,建立了变压器选择的评估价格模型,并对模型进行了详细的分析和讨论。
关键词 变压器 损耗评估 经济评价
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对变压器损耗评估的经济评价方法
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作者 尚德波 《煤炭技术》 CAS 2004年第5期30-31,共2页
在对变压器损耗评估的基础上,考虑了电价上涨及资金时间价值等因素的影响,建立了变压器选择的评估 价格框架,并对框架进行了详细的分析和讨论。
关键词 变压器 损耗评估 经济评价 设备选择
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对变压器损耗评估的经济评价方法
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作者 张志强 《甘肃科技纵横》 2008年第3期70-70,共1页
在对变压器损耗评估的基础上,考虑了电价上涨及资金时间价值等因素的影响,建立了变压器选择的评估价格框架,并对框架进行了详细的分析和讨论。
关键词 变压器 损耗评估 经济评价
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基于注意力机制和卷积神经网络的异步电动机三相电压不平衡损耗研究 被引量:3
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作者 符嘉晋 孟安波 +4 位作者 蔡涌烽 陈顺 殷豪 吴非 陈子辉 《电机与控制应用》 2021年第8期55-62,共8页
配电网中三相电压不平衡对异步电动机损耗会造成较大影响。运用等效电路公式分析三相电压不平衡影响下电动机损耗存在精度不稳定、需要参数过多且数学模型过于复杂等问题。针对以上问题,提出一种基于注意力机制和卷积神经网络(CNN)的异... 配电网中三相电压不平衡对异步电动机损耗会造成较大影响。运用等效电路公式分析三相电压不平衡影响下电动机损耗存在精度不稳定、需要参数过多且数学模型过于复杂等问题。针对以上问题,提出一种基于注意力机制和卷积神经网络(CNN)的异步电动机损耗评估方法。该方法将实测电机数据作为输入,引入注意力机制为输入特征赋予不同权重;采用卷积层和全连接层组成的CNN构架对异步电动机实测数据进行学习,最后完成损耗评估。以现场试验得到的电机损耗数据作为实际算例,该方法评估损耗与实测损耗平均误差仅为0.717%和0.549%,并与其他典型机器学习算法进行对比,结果表明所提方法具有更好的损耗评估性能。 展开更多
关键词 三相电压不平衡 异步电动机 损耗评估 注意力机制 卷积神经网络
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Theory and practice of value management and its innovation for natural resources from the perspective of sustainable development 被引量:1
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作者 Zhang Hongliang Wu diyu Ma Jianwei 《Ecological Economy》 2008年第1期49-56,共8页
The supreme obstacle for sustainable development of natural resources is the scarecity, bottleneck. So how to promote the sustainable utilizing and increase the using efficiency of natural resources is worth studying.... The supreme obstacle for sustainable development of natural resources is the scarecity, bottleneck. So how to promote the sustainable utilizing and increase the using efficiency of natural resources is worth studying. This paper suggests that we should improve the model and means of evaluating method and value management based on th~ theory of natural resource compensation. This paper discusses the User Cost Method based on the microeeonomicaspect which can change the evaluating method for natural resources. From the perspective of value managemen model, we should use the User Cost Method to realize the linkage and integration of micro and macro eompensation for natural resources. Based on the evaluating and aecounting idea User Cost Method, this paper presents a theo. retical framework to harmonize and link micro and macro compensation for natural resources. At present, we should seek the new approach and method to manage natural resources, so can we realize the capitalization managemen focusing on the vahte management for natural resources. 展开更多
关键词 Natural resources value management (NRVM) Evaluating method Resource depletion cost
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基于信息结构理论的同声传译译语内容质量评估体系构建 被引量:5
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作者 卢信朝 《外国语》 CSSCI 北大核心 2020年第6期116-128,共13页
同声传译(同传)以传递信息、促进交际为根本宗旨,译语内容质量评估应以信息为评估对象,但错误分析法、命题分析法等国内外现有评估方法局限于词汇-语义评估层次,评估语言形式、语义而非信息,且评估单位不清晰、不合理,难以有效评估同传... 同声传译(同传)以传递信息、促进交际为根本宗旨,译语内容质量评估应以信息为评估对象,但错误分析法、命题分析法等国内外现有评估方法局限于词汇-语义评估层次,评估语言形式、语义而非信息,且评估单位不清晰、不合理,难以有效评估同传质量。本文借鉴Lambrecht(1994)信息结构理论,结合同传工作方式特征,制定源语断言划分标准及分类体系,建立源语信息衡量体系,制定译语信息损耗评估标准,建立译语信息损耗评估体系,构建以信息为评估对象、以语义-语用为评估层次、反映同传传递信息、促进交际这一根本宗旨的同传译语内容质量评估体系。 展开更多
关键词 信息结构理论 同声传译译语内容质量评估体系 源语信息衡量体系 译语信息损耗评估体系
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An Evaluation of Standby Losses Effect in Power Demand in Greek Urban Households
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作者 Stavros Dimitrios Kaminaris George Christos Ioannidis Constantinos Stavros Psomopoulos 《Journal of Energy and Power Engineering》 2015年第5期459-472,共14页
Standby consumption is a global phenomenon because the largest "leakers" are internationally-traded appliances usually line-powered electronic equipment. Currently, it represents 5%-11% (depending on the region and... Standby consumption is a global phenomenon because the largest "leakers" are internationally-traded appliances usually line-powered electronic equipment. Currently, it represents 5%-11% (depending on the region and related estimations) of the total electricity demand in European households, mostly concentrated in entertainment and office equipments. This paper is focused on the evaluation of the standby losses in typical urban areas of Greece. The results of an analytical survey in urban households located in different areas of region of Attica-Greece are presented and analyzed. This survey is taking under consideration the type and the quantity of electric/electronic devices used, power consumption measurements concerning different standby modes of operation as well as people's habits in relation to the way they used the devices. Furthermore, recent and old detailed power consumption measurements of the most common modes of operation (on, offand standby), in other member states of Europe are presented and analyzed giving the opportunity to compare the situation in a typical urban Greek area and the respective in other parts of Europe. The presented data reveal the magnitude of the standby losses problem in Greece and the potential benefits gained by the enforcement of recent EU (European Union) policies. 展开更多
关键词 Standby losses field survey consumption measurements urban households.
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