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衔接配电网标准的充换电设施规划扩展研究
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作者 张云飞 徐成 +1 位作者 徐艺鸣 宗祥华 《机电信息》 2024年第8期1-4,共4页
随着电动汽车的普及和能源结构的转变,充换电设施作为连接电力系统和电动汽车的桥梁,其重要性日益凸显。然而,当前充换电设施的优化规划发展还存在着一些问题,如布局不合理、与配电网标准衔接不紧密等。现从负荷预测、供电区域划分、变... 随着电动汽车的普及和能源结构的转变,充换电设施作为连接电力系统和电动汽车的桥梁,其重要性日益凸显。然而,当前充换电设施的优化规划发展还存在着一些问题,如布局不合理、与配电网标准衔接不紧密等。现从负荷预测、供电区域划分、变电站规划技术原则三个方面分析接入充换电设施后对配电网规划的影响,统筹考虑充换电设施接入后对区域的负荷预测,根据区域电动汽车保有量对负荷进行预测,使得供电区域划分和变电站配置规划技术更加合理,以提高充换电设施接入后电网的稳定性。 展开更多
关键词 电动汽车 充换电设施 供区规划 配电网
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Water Resource Allocation under Consideration of the National NIY Plan in Harbin, China
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作者 张焱 刘苏峡 陈军锋 《Journal of Resources and Ecology》 CSCD 2012年第2期161-168,共8页
Water resource allocation (WRA) is a useful but complicated topic in water resource management. With the targets set out in the Plan of Newly Increasing Yield (NIY) of 10×1011 Jin (1 kg=2 Jin) from 2009 to ... Water resource allocation (WRA) is a useful but complicated topic in water resource management. With the targets set out in the Plan of Newly Increasing Yield (NIY) of 10×1011 Jin (1 kg=2 Jin) from 2009 to 2020, the immediate question for the Songhua River Region (SHRR) is whether water is sufficient to support the required yield increase. Very few studies have considered to what degree this plan influences the solution of WRA and how to adapt. This paper used a multi-objective programming model for WRA across the Harbin region located in the SHRR in 2020 and 2030 (p=75%). The Harbin region can be classified into four types of sub-regions according to WRA: Type I is Harbin city zone. With rapid urbanization, Harbin city zone has the highest risk of agricultural water shortage. Considering the severe situation, there is little space for Harbin city zone to reach the NIY goal. Type II is sub-regions including Wuchang, Shangzhi and Binxian. There are some agricultural water shortage risks in this type region. Because the water shortage is relatively small, it is possible to increase agricultural production through strengthening agricultural water-saving countermeasures and constructing water conservation facilities. Type III is sub-regions including Acheng, Hulan, Mulan and Fangzheng. In this type region, there may be a water shortage if the rate of urbanization accelerates. According to local conditions, it is needed to enhance water-saving countermeasures to increase agricultural production to a certain degree. Type IV is sub-regions including Shuangcheng, Bayan, Yilan, Yanshou and Tonghe. There are good water conditions for the extensive development of agriculture. Nevertheless, in order to ensure an increase in agricultural production, it is necessary to enhance the way in which water is utilized and consider soil resources. These results will help decision makers make a scientific NIY plan for the Harbin region for sustainable utilization of regional water resources and an increase in agricultural production. 展开更多
关键词 the Harbin region supply and demand prediction multi-objective programming model genetic algorithm water resource allocation (WRA)
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