The study of power grid data disclosure concerning large scale grid integration of wind and PV energies

2016 Fiscal Year Final Research Report

• Project/Area Number: 26340125
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental policy and social systems
• Research Institution: Ritsumeikan University
• Principal Investigator: Takehama Asami 立命館大学, 産業社会学部, 教授 (60202157)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 風力発電 / 太陽光発電 / 系統連系 / 電力システム / 給電情報 / 上流送電 / 優先給電

Outline of Final Research Achievements

Grid operations and key rules enabling integration of wind and photovoltaic systems into the power network system in Japan and Germany were analyzed in this study. The research focuses on reverse power flow from low voltage and medium voltage grids to high voltage grids. German grid operators flexibly transmit electricity in a bidirectional way, depending on the power output from renewable electricity. German grid operators prioritize purchase of renewable electricity and transmit it to the upstream grid as necessary. In Japan, grid operation is unidirectional and uses a downward power flow based on electricity from nuclear power and large-scale coal power plants. Renewable electricity has no legal definition with regard to upstream transmission. The Renewable Energy Act in Japan does not oblige utility companies to expand their grid capacity.

Free Research Field

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