基于智慧能源视角影响北京市电力需求的灰色关联分析

电力需求变化受各种因素的影响,对于智慧能源建设需要深入分析各种因素的未来趋势及对用电需求的影响。运用灰色关联方法对影响北京市用电需求量的宏观因素进行了分析,选取可以反映北京市经济、社会、科学、文化水平的指标,利用2002—2014年的年度数据计算影响因素与全社会用电量之间的绝对关联度、相对关联以及综合关联度,并进行排序分析。结果表明：相比经济、社会、文化因素,科技因素与社会用电需求的关系最为显著。     

建筑电气与智能化专业人才培养模式改革思路

建筑电气与智能化专业人才培养模式经历了一个逐渐完善的过程。以青岛理工大学建筑电气与智能化专业培养计划修订为基础,从培养目标、理论教学体系、实践教学体系等方面出发,对人才培养模式改革进行探讨,探寻满足社会需求、专业发展需求和适应学生需求的培养模式,以适应新形势对人才的要求。     

热轧或CSP冷却水能源回收系统研究

结合热轧或CSP冷却工艺特点与要求,通过对水泵及泵组运行特性分析,研究认为采用稳压回流水轮机助动冷却水泵是结构简单、经济可行的方案,但受水泵形式影响很大;采用冷却水溢流稳压水轮机发电是目前最适合的能源回收方案。     

Geothermal power production in future electricity markets—A scenario analysis for Germany

Development and diffusion of new renewable energy technologies play a central role in mitigating climate change. In this context, small-scale deep geothermal power has seen growing interest in recent years as an environmentally friendly, non-intermittent energy source with large technical potential. Following the first successful demonstration projects, the German geothermal industry is currently experiencing an internationally unparalleled growth. In this study we explore the factors driving this development, and the role geothermal power production could play in the future of the German electricity market. For this, we apply the scenario technique, based on literature analysis and interviews with companies operating actively in the field. Our findings highlight the importance of political support and framework conditions in the electricity market, with the best prospects in a decentralised energy system based on renewable energy sources, where high investment costs and the risk of discovery failure are balanced by the benefits of low-carbon base load power.     

An approach to locational marginal price based zonal congestion management in deregulated electricity market

Congestion of transmission line is a vital issue and its management pose a technical challenge in power system deregulation. Congestion occurs in deregulated electricity market when transmission capacity is not sufficient to simultaneously accommodate all constraints of power transmission through a line. Therefore, to manage congestion, a locational marginal price (LMP) based zonal congestion management approach in a deregulated electricity market has been proposed in this paper. As LMP is an economic indicator and its difference between two buses across a transmission line provides the measure of the degree of congestion, therefore, it is efficiently and reliably used in deregulated electricity market for congestion management. This paper utilizes the difference of LMP across a transmission line to categorize various congestion zones in the system. After the identification of congestion zones, distributed generation is optimally placed in most congestion sensitive zones using LMP difference in order to manage congestion. The performance of the proposed methodology has been tested on the IEEE 14-bus system and IEEE 57-bus system.     

市场化改革下的可再生能源发电价格机制研究

价格政策对可再生能源开发利用具有至关重要的作用。通过全面总结可再生能源发电定价政策和费用分摊制度,分析当前相关价格政策所存在的缺乏动态调整机制、补贴资金欠账、地方政府权责不匹配等突出问题,结合电力体制改革和电价市场化的背景,提出可再生能源发电价格政策与电力体制改革和市场化衔接、与发电成本降低和补贴退坡机制衔接、与激发地方主动性和实现权责对等衔接、与满足发展需要和提高资金拨付效率衔接的建议,以更好地利用价格政策促进可再生能源健康发展。     

Unravelling historical cost developments of offshore wind energy in Europe

This paper aims to provide insights in the cost developments of offshore wind energy in Europe. This is done by analysing 46 operational offshore wind farms commissioned after 2000. An increase of the Capital Expenditures (CAPEX) is found that is linked to the distance to shore and depth of more recent wind farms and commodity prices. Analysis results indicate that these two factors are only responsible for about half of the observed CAPEX increase, suggesting other factors such as turbine market with limited competition also led to an increasing CAPEX. Using CAPEX, Annual Energy Production, Financings costs and Operational Expenditures, the development of average Levelized Cost of Electricity (LCoE) is shown to increase from 120 €/MWh in 2000 towards 190 €/MWh in 2014, which is a direct result of the CAPEX increase. The results indicate very different LCoE values among European countries, from currently about 100 Euro/MWh in Denmark and Sweden to 150-220 Euro/MWh in all other countries investigated suggesting an effect of national policy frameworks on the LCoE of offshore wind energy.     

大数据架构下的用电评价与反窃电技术探讨

当前用电数据类型繁多、数量庞大、窃电手段多样化,仅采用传统用电数据对比存在耗时耗力、精度较低的缺陷.本文基于BP神经网络强大的学习能力和反馈纠错能力,建立反窃电嫌疑分析模型.实例验证结果表明,采用构建的防窃电嫌疑分析模型的整体判定准确度保持在96％以上,具有很高的精度,能很好地满足使用电网监督要求.     

基于协同进化算法求解寡头电力市场均衡

建立并分析了考虑网络约束且能考虑需求方策略竞价的电力市场线性供给函数模型,在该市场框架中,独立系统运行员通过求解最优潮流来确定发电安排以及节点电价,市场策略性参与者通过竞标来追求最大利润.运用协同进化算法求取市场均衡,协同进化算法系一种智能代理仿真方法,借鉴了生态系统中协同进化机制的理念.多个算例被用来验证协同进化算法的有效性,实验结果表明如果市场存在纯策略均衡,该算法均能够快速收敛到均衡点,运用简便且具有较强的搜索能力.     

电力市场效率理论及其评价方法

电力市场效率研究是电力市场建设的核心问题。文章提出了考虑宏观因素、市场内部因素、物理因素的广义电力市场效率理论,从电力市场效益、交易成本、外部性、市场力、风险等方面详细论述了产权制度、政府职能、法律保障、市场机制、市场结构、交易品种、交易方式、电网结构等因素对电力市场效率的影响,提出了基于资源配置状态、生产者和消费者剩余及其增量的电力市场效率评估关键指标,从不同层面有效评估了电力市场效率。