A Simple Evaluation Method for Annual CO<sub>2</sub> Emissions Reduced by Distribution Loss Minimization

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  • Hayashi Yasuhiro
    Graduate School of Electrical and Electronics Engineering, University of Fukui
  • Takano Hirotaka
    Dept. of Electrical and Computer Engineering, Gifu National College of Technology
  • Matsuki Junya
    Graduate School of Electrical and Electronics Engineering, University of Fukui
  • Yokoyama Masao
    Graduate School of Electrical and Electronics Engineering, University of Fukui

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Other Title
  • 配電損失最小化に基づく年間CO<sub>2</sub>排出削減量の簡易評価手法
  • 配電損失最小化に基づく年間CO2排出削減量の簡易評価手法
  • ハイデン ソンシツ サイショウカ ニ モトズク ネンカン CO2 ハイシュツ サクゲンリョウ ノ カンイ ヒョウカ シュホウ

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Abstract

Global warming caused by carbon dioxide (CO2) and other greenhouse gases is one of the serious environmental issues. Carbon dioxide is the biggest contributor to global warming. Many efforts to reduce emissions of CO2 are carrying out in various fields. In electrical power system field, various approaches to reduce CO2 emissions have been performed such as loss reduction, utilization of renewable energy, recycling of resources and so on. Especially, distribution loss minimization is effective to reduce CO2 emissions because reduction of distribution loss leads to save the energy. For example, the largest distribution system in Japan consists of about 19,000 feeders. Much CO2 emissions can be reduced by minimizing distribution loss of the largest distribution system. However, CO2 emissions reduced by distribution loss minimization for the largest Japanese distribution system have not been estimated so far.<br>In this paper, the authors try to calculate annual CO2 emissions reduced by distribution loss minimization for a distribution system model based on partial actual data, which is composed by 19,000 distribution feeders, 95,358 sectionalizing switches and 73,849 load sections. In the trial calculation, reduced CO2 emissions are estimated by sequentially proceeding four procedures: (1) classification of distribution system model into several load areas, (2) determination of loss minimum configuration in each load area, (3) calculation of reduced annual distribution loss for each area, and (4) calculation of reduced annual CO2 emissions. As the result of the trial calculation, reduced annual CO2 emissions of 40 × 106kg/year is estimated for the Japanese largest scaled 19,000 feeders distribution model.

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