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전력계통한계가격(SMP)과 기저발전비율, LNG도입가격, 환율 간 인과관계 분석
박민혁(Min Hyug Park),문양택(Yang Taik Moon),박중구(Jung Gu Park) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.7
This article examines the causality relationship among SMP, base-load share, LNG import price, and exchange rate in Korean power market during 2002∼2012, using unit root test, cointegration test, and vector error correction model(VECM). The cointegration test shows that 4 variables without unit root have been in the long-run causality. As the results of ECM, SMP is analyzed to have been unilaterally caused from LNG import price and base-load share in the shot-run, while it has been unilaterally caused from LNG import price and exchange rate in the long-run. This article has the following policy implications: the adjustment of exchange rate to reduce he risk of LNG import price and the proper securement of base-load share for the long-run stability of SMP.