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An analysis of the electricity consumption reduction potential of electric motors in the South Korean manufacturing sector

机译：对韩国制造业中电动机的电力消耗减少潜力的分析

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摘要

Electric motors account for 42.9% (as of 2010) of electricity consumption in the Korean manufacturing sector, which represents 20.9% of total electric power demand in Korea. Efficient use of motors in the manufacturing sector is therefore essential in controlling electric power demand in Korea. This study analyzes the potential and economic feasibility of reducing electric motor electricity consumption in the Korean manufacturing sector. Presently, Korea only enforces minimum energy performance standards (MEPS) for three-phase induction electric motors rated 200kW or less, and the industrial electricity price is much lower than the Organization for Economic Co-operation and Development (OECD) average. In addition, load factors of electric motors are generally far below optimal efficiency, and variable-speed drive (VSD) installation rates are lower than in other advanced countries. This study analyzes the amount and cost of reducing electricity consumption under each of the following scenarios, modeled as additional strategies to the current MEPS, for reducing energy consumption: (1) expansion of MEPS enforcement, (2) increasing the industrial electricity price, (3) enhancement of motor load factors, and (4) installation of VSDs. This study found that increasing the industrial electricity price has the largest electricity reduction potential and is economically most beneficial to the society.
机译：截至2010年，电动机在韩国制造业的用电量中占42.9％，占韩国总电力需求的20.9％。因此，在制造业中有效使用电动机对于控制韩国的电力需求至关重要。这项研究分析了在韩国制造业中减少电动机电力消耗的潜力和经济可行性。目前，韩国仅对额定功率为200kW或以下的三相感应电动机执行最低能效标准（MEPS），并且工业用电价格远低于经济合作与发展组织（OECD）的平均水平。此外，电动机的负载系数通常远低于最佳效率，并且变速驱动器（VSD）的安装率低于其他发达国家。这项研究分析了以下每种情况下减少电力消耗的数量和成本，这些模型被建模为当前MEPS的减少能耗的其他策略：（1）扩大MEPS的执行力度;（2）提高工业用电价格;（ 3）增强电动机负载系数，以及（4）安装VSD。这项研究发现，提高工业用电价格具有最大的节电潜力，并且在经济上对社会最有利。

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