• 대한전기학회논문지:전력기술부문A
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• 제51권4호
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• pp.183-187
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• 2002

The efficient and rational transmission tariff structure is one of the crucial factors in creation of fair and competitive electricity markets. Transmission charge can be largely categorized into the line usage charge, system reliability charge, access charge and others. Any transmission tariff should be able to reflect these cost components reasonably. This paper suggests an approach amenable to allocating the transmission reliability costs reasonably with reflection of line sensitivity and line outage rate.

• 수산경영론집
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• 제43권2호
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• pp.1-14
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• 2012

The main purpose of this study is to analyze the effect of Korea-China free trade agreement(FTA) on Korea's fisheries trade using the partial equilibrium analysis model of Feenstra(1995). The study tries to show the impact on trade flows and welfare of the elimination of tariffs Korea-China FTA on Korea's fisheries sector among several scenarios of trade liberalization. The results of the study indicate that the increase of fisheries export to China is lower than that of fisheries import from China. Therefore Korea-China FTA results in the decrease of domestic of fisheries production even though total welfare effect is positive. The study suggest several policy proposals for soft-landing of Korea-China FTA on Korea's fisheries sector. One of them is to lengthen the term of tariff elimination to minimize the impact on domestic fisheries sectors.

• 전기학회논문지
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• 제64권7호
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• pp.1125-1129
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• 2015

Increasing peak load is one of the major concerns about operation of urban railroad systems. Since ESSs (Energy Storage Systems) have a great potential for shaving the peak load, there has been a growing interest in the use of ESS for peak load reduction. Also, ESS can be optimally scheduled to minimize the electricity purchasing cost under a given ToU (Time-of-Use) tariff by taking advantage of electricity price difference between peak and off-peak time. This paper presents a Mixed Integer Programming (MIP)-based ESS scheduling method to minimize the electricity purchasing cost under a ToU tariff for an urban railroad system.

• 한국경영과학회지
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• 제27권4호
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• pp.11-27
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• 2002

This paper is aimed at surveying the method that supports logical and theoretical back grounds of electricity service pricing, to investigate whether the ESPM can reflect comprehensively the various interests of parties and persons concerned with electricity supply and demand, and analyzing the practical applicability of the model in short-term perspectives. The major findings of this study can be summarized as fellows. First, the ESPM explains what process the equilibrium price is attained through, which is the essential concept and object in evaluating the value of public enterprises or utilities and the price of electricity Second, the ESPM provides the logics and methods that can objectify the discrete price by each electricity user. Third, the ESPM presents theoretical logics and practical methods that can calculate the basic price and the variable price per electricity unit which are key concepts in the two-part tariff. Fourth, the ESPM has powerful practical applicabilities in the reasonable electricity pricing and in the explanation for the balance between parties and persons interested with electricity supply and demand.

• 신재생에너지
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• 제10권1호
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• pp.41-49
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• 2014

For a proper valuation of wind power project, it is necessary to consider volatilities of key parameters such as annual energy production, electricity sales price, and long term interest rate. Real option methodology allows to calculate option values of these parameters. Volatilities to be considered in wind project valuation are 1) annual energy production (AEP) estimation due to meteorological variation and estimation errors in wind speed distribution, 2) changes in system marginal price (SMP), and 3) interest rate fluctuation of project financing which provides refinancing option to be exercised during a loan tenor for commercial scale projects. Real option valuation turns out to be more than half of the sales value based on a case study for a FIT scheme wind project that was sold to a financial investor.

• 농촌지도와개발
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• 제10권2호
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• pp.211-227
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• 2003

According to the TRQ system created by WTO agreement on agriculture, Korea notified the WTO of the application of tariff rate quotas for 67 agricultural commodities(now, 63 commodities). Among these government administrate state-operated trade for 17 commodities. However, WTO/DDA negotiation will bring about lowering tariffs and increasing quantities of tariff quota. This study suggest the development programs corresponding WTO/DDA agriculture negotiation. First, from the viewpoint of the protection of domestic agriculture & improving transparency of agricultural import administration, the administration system of the state-operated trade will be necessary to be transformed for market oriented methods. Second, the administration system of the state-operated trade will be necessary to be rendered unified organization also. The current system of the state-operated trade shows the phenomena og many divergency. And third, The quantities of market access of FTA between Korea and Chile will be desirable to be administrate by state-operated trade. Because, according to diffusion of FTA treaties, the amount of market access quantities of FTA increase rapidly henceforth.

• 통상정보연구
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• 제6권2호
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• pp.243-263
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• 2004

Recently, International electronic commerce has been rapidly increasing. Over the past decade, e-commerce on the business foundation of the Internet compound has entered extensive areas of international trade and social activity. This paper focuses on the system establishment of customs duties of import goods in Global e-Commerce. Today, USA, EU and some major countries, International Organization insisted to Tariff-free woe in customs duty. This study also will discuss the effect of imposition of import duties. In order to impose customs duties, it needs to establish a system scheme, especially, because international payment of BtoC Commerce occur by the Credit Card. This study deals with Customs duties of import goods in Global e-Commerce.

• Communications for Statistical Applications and Methods
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• 제29권2호
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• pp.225-238
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• 2022

In this paper, we propose a clustering method for advanced metering infrastructure (AMI) data in Korea. As AMI data presents non-stationarity, we consider time-dependent frequency domain principal components analysis, which is a proper method for locally stationary time series data. We develop a new clustering method based on time-varying eigenvectors, and our method provides a meaningful result that is different from the clustering results obtained by employing conventional methods, such as K-means and K-centres functional clustering. Simulation study demonstrates the superiority of the proposed approach. We further apply the clustering results to the evaluation of the electricity price system in South Korea, and validate the reform of the progressive electricity tariff system.

• 수산경영론집
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• 제53권4호
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• pp.51-67
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• 2022

The Korean tariff rate for fishery products is a single tax rate of 10% for live fish and frozen seafood, and 20% for all others. Since FTAs have been concluded with several countries, the tariffs is not an appropriate means to protect domestic fishery producers. The differential tariff rate according to the scientific name (genus) of the fishery products, which was implemented 30 years ago to protect fishery products produced in the Korean coastal waters has lost its original purpose. It seems that future fishery trade policy should focus on IUU prevention, hygiene and safety of consumers rather than protecting fishery producers through customs tariffs. This paper suggest that a paradigm shift in the fishery producers protection policies such as direct financial support from the state, protection and development of fishery resources, and support for fostering the 6th industry rather than indirect protection through tariffs.

• 한국가스학회:학술대회논문집
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• 한국가스학회 2003년도 추계학술발표회 논문집
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• pp.225-230
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• 2003