• 전기의세계
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• v.20 no.5
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• pp.27-34
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• 1971

본고에서는 지중선로는 그 시공이 곤란하고, 사고수리기간도 길고, 한편 가공선로에 비교해서 9배이상의 건설비가 소요되고, 따라서 전기요금도 인상케 할 요인이 되므로 그 건설은 가능한 기피해야하나, 고층건물이 속출하는 도시에서는 그 사용이 불가피하고, 현재로서는 별다른 대안이 없다. 현재 한전은 당인리발전소와 용산변전소간에 간에 154KV OF cable 지중선로를 건설중에 있고, 1973년경에는 본문의 pipe type cable의 지중선로가 실현될것이 예기된다. 그리고 이외에 서울에서 5개소, 부산에서 2개소의 지중선로계획이 추진중에 있다.

• Journal of Energy Engineering
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• v.29 no.3
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• pp.64-73
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• 2020

This paper presented a methodology for calculating daily load curves per city by taking into account the charging/discharging location of electric vehicle. In other words, this is the daily load curve calculation algorithm by city, which takes into account the charging/discharging location of electric vehicles, so that the impact of loads generated by charging/discharging of electric vehicles on the power grid can be easily understood in certain cities. Specifically, in accordance with the PEVs share scenario, the PEVs discharge power was calculated to reflect both the characteristics of the arriving vehicle in the morning and the SMP plan after establishing a assumption that the electric vehicle arrived at work in the morning and the electric vehicle arrived at home in the afternoon for each of the charging/discharging locations, that is, work and home, of electric vehicles in the city. After calculating the daily load curve for each charging/discharging power type for the PEVs charging strategy, which takes into account both the characteristics of the vehicle arriving at home in the afternoon and the TOU fare system, it was analyzed by comparing the impact assessment on the grid by adding the existing load.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.596-597
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• 2011

현재 직접구매제도는 전기사업법에 명시되어 있는 제도임에도 불구하고 직접구매 구입가격체계의 문제로 인해 사문화 되어있다. 현재 소비자의 요금체계와 도매시장 체계하에서 직접구매가 가능한 구입가격체계를 제시하고 직접구매가 활성화 될 경우 국가전체에 미치는 기대효과를 주로 수요관리 측면에서 분석하였다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1997.10a
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• pp.241-246
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• 1997

본 논문에서는 사용이 편리하여 산업 발전의 원동력이 되고 있는 전기에너지의 이용합리화의 수단의 하나인 디맨드 감시/제어 장치에 대한 퍼지제어의 적용에 대해 제안한다. 이 장치는 전력사용이 많은 300㎾이상의 수용가에 있어서 피크(Peak)시 전력이 계약전력을 초과하지 않도록 감시/제어하여 에너지 사용의 합리화 및 전기요금 절감효과를 도모할수 있는 에너지 기기의 개발에 기여할 수 있다. 본 연구에서는 효율적인 디맨드 감시/제어를 위해 지수평활법을 이용한 부하예측과 퍼지제어기를 제안하고자 한다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.18 no.3
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• pp.156-162
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• 2004

In this paper, a technique that estimate the optimal capacity of the solar-wind hybrid power system for minimizing the total monthly electric power expenses is presented. The hybrid power system is assumed to be operated in connection with the utility power system and electric bill be paid for the power not covered by the hybrid system generation. Monthly generation cost is estimated based on total life-cycle cost analysis. The monthly utility power bill is assumed to be increased quadratically in proportion with the net utility power consumption which is the difference between the total monthly load minus the hybrid system generations. Test results demonstrate applications potential of the proposed technique.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.37-52
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• 2013

Prior to full-scale implementation of smart grid, the Korean government is conducting a smart grid testbed in Jeju island. However, the participants of the ongoing program are skeptical about the success of the expansion of smart grid. The concern rises from various reasons; the limits of the Korean electricity market mainly led by both the government and KEPCO, high stability and reliability of the existing electricity grid, insufficient utilization of renewable energy, and public fear of raised electricity bills. Five key issues in regards to facilitating the Korean smart grid market are extracted and evaluated. The issues are conflict of interest among participants, the effect of introducing real-time pricing, lack of customer participation of demand response, and absence of business models.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.12
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• pp.2387-2393
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• 2017

The Moon government, launched in May 2017, regards telecommunication service as part of people's welfare and is trying to save telecommunication costs. However, the direction of policy presented is assessed as symptomatic approach. This is largely attributable to the a partial improvement approach from the framework of the present mobile telecommunication industry. However if we restart from an essential point of view, the result is likely to be much better. The nation's mobile communication costs are not adequate because the government's role was not sufficient. There is a problem with the mobile phone supply chain, the subsidy payment mechanism, and the billing system. Addressing these complex issues requires the establishment of an independent system of handset distribution from telecommunication companies, ban on discriminative subsidies payment, and adoption of volume rate system. Telecommunications Business Act that defines the service charges to normalize the market might be somewhat useful, but the normal application of the Fair Trade Act is more important.

• Environmental and Resource Economics Review
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• v.22 no.2
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• pp.367-391
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• 2013

After the Fukushima nuclear accident, the external costs of generating electricity from nuclear power plants such as additional safety compliance costs and possible accident risk action costs have gained increasing attention from the public, policy-makers and politicians. Consequently, estimates of the external costs of nuclear power are very deliberate issue that is at the center of the controversy in Korea. In this paper, we try to calculate the external costs associated with the safety of the nuclear power plants, particularly focusing on additional safety compliance costs and possible accident risk action costs. To estimate the possible accident risk action costs, we adopt the damages expectation approach that is very similar way from the external cost calculation of Japanese government after the Fukushima accident. In addition, to estimate additional safety compliance costs, we apply the levelized cost of generation method. Furthermore, we perform the sensitivity analysis to examine how much these social costs increase the electricity price rate. Estimation results of the additional security measure cost is 0.53Won/kWh ~ 0.80Won/kWh depending on the capacity factor, giving little change on the nuclear power generation cost. The estimates of possible accident risk action costs could be in the wide range depending on the different damages of the nuclear power accident, probability of the severe nuclear power accident and the capacity factor. The preliminary results show that it is 0.0025Won/kWh ~ 26.4188Won/kWh. After including those two external costs on the generation cost of a nuclear power plant, increasing rate of electricity price is 0.001%~10.0563% under the capacity factor from 70% to 90%. This paper tries to examine the external costs of nuclear power plants, so as to include it into the generation cost and the electricity price. This paper suggests one of the methodologies that we might internalize the nuclear power generations' external cost, including it into the internal generation cost.

• Environmental and Resource Economics Review
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• v.28 no.1
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• pp.147-176
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• 2019

This paper uses research on the Levelized Cost of Electricity (LCOE) in South Korea to conduct a simulation analysis on the impact of nuclear power dependency and usage rates on the social costs of power generation. We compare the $7^{th}$ basic plan for long-term electricity supply and demand, which was designed to increase nuclear power generation, to the $8^{th}$ basic plan for long-term electricity supply and demand that decreased nuclear power generation and increased renewable energy generation in order to estimate changes in social costs and electricity rates according to the power generation mix. Our environmental generation mix simulation results indicate that social costs may increase by 22% within 10 years while direct generation cost and electricity rates based on generation and other production costs may increase by as much as 22% and 18%, respectively. Thus we confirm that the power generation mix from the $8^{th}$ basic plan for long-term electricity supply and demand compared to the $7^{th}$ plan increases social costs of generation, which include environmental external costs.

• Korea Petroleum Association Journal
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• s.301
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• pp.28-31
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• 2016

올 4월 일본의 전력소매 시장이 전면 자유화됐다. 자유화 이전에는 전국 10개 전력회사가 각자 지역에 대해 전력 공급을 독점하였기 때문에, 주택용 전력 소비자가 다른 전력사의 전기를 구입하는 건 불가능했다. 하지만 현재에는 소비자가 자유롭게 전력회사를 선택할 수 있다. 전면자유화 이후 가장 눈에 띄는 변화는 전력소매 사업자 증가, 다양한 요금제 출시 및 새로운 결합상품의 등장이다.