• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.11
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• pp.2136-2141
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• 2009

Transmission planning is an important part of power system planning to meet an increasing demand for electricity. The objective of transmission expansion is to minimize operational and construction costs subject to system constraints. There is inherent uncertainty in transmission planning due to errors in forecasted demand and fuel costs. Therefore, transmission planning process is not reliable if the uncertainty is not taken into account. The paper presents a systematic method to find the optimal location and amount of transmission expansion using Cross-Entropy (CE) incorporating uncertainties about future power system conditions. Numerical results are presented to demonstrate the performance of the proposed method.

• Journal of Electrical Engineering and Technology
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• v.10 no.3
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• pp.709-718
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• 2015

Traditional transmission planning usually caters for rated wind power output. Due to the low occurrence probability of nominal capacity of wind power and huge investment in transmission, these planning methods will leads to low utilization rates of transmission lines and poor economic efficiency. This paper provides a novel transmission expansion planning method for integrating large-scale wind power. The wind power distribution characteristics of large-scale wind power output and its impact on transmission planning are analyzed. Based on the wind power distribution characteristics, this paper proposes a flexible and economic transmission planning model which saves substantial transmission investment through spilling a small amount of peak output of wind power. A methodology based on Benders decomposition is used to solve the model. The applicability and effectiveness of the model and algorithm are verified through a numerical case.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.117-118
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• 2008

제3차 전력수급기본계획(산업자원부, '06.12 공고)확정 고시 후 한전에서는' 07.1월 장기 송변전설비계획(2006년${\sim}$2020년)을 수립하여 시행중에 있다. 이와 별도로 한전에서는 전력수요 포화 시점(2030년)에 전력계통 구성의 최종목표를 제시 하고자 장기 송변전설비 Master Plan을 수립하였다. 본 논문에서는 전력수요 포화 시점에 대비한 Master Plan 수립방향, 수립결과 분석, 기술적 문제점 및 대책(과도안정도, 고장전류)에 대해 개략적으로 설명하였다. 본 수립내용을 토대로 설비확충 계획 뿐만 아니라 정비계획을 종합한 기존설비 개선.정비 방안을 시행할 예정이다.

• KIEE International Transactions on Power Engineering
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• v.4A no.2
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• pp.84-90
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• 2004

This paper presents a new method for choosing the best line for transmission system expansion planning considering the highest reliability level of the transmission system. Conventional methodologies for transmission system expansion planning have been mainly focused on economics, which is the minimization of construction costs. However, quantitative evaluation of transmission system reliability is important because successful operation and planning of an electric power system under the deregulated electricity market depends on transmission system reliability management. Therefore, it is expected that the development of methodology for choosing the best lines considering the highest transmission system reliability level while taking into account uncertainties of transmission system equipment is useful for the future. The characteristics and effectiveness of the proposed methodology are illustrated by the case study using a MRBTS.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.54 no.7
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• pp.358-365
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• 2005

Transmission networks play an important role which transfer generated electric power to a consumer in power system operation. In a competitive environment of electric power industry, developing the technological criterions and methodologies on transmission planning is becoming new challenge to transmission system planner. The use of a locational signal and the provision of a indicative plan to control the transmission investment reasonably is very important in the viewpoint of a regulator. The main target of this study is to develop a systematic criterion of transmission expansion planning. And system congestion cost is considered. The proposed methodology was demonstrated with several case studies.

• Proceedings of the KIEE Conference
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• 2001.05a
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• pp.77-83
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• 2001

• KIEE International Transactions on Power Engineering
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• v.5A no.1
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• pp.62-69
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• 2005

The optimal design of transmission system expansion planning is an important part of the overall planning task of electric power system under competitive electricity market environments. One of main keys of the successful grid expansion planning comes from optimal reliability level/criteria decision, which should be given for constraint in the optimal expansion problem. However, it's very difficult to decide logically the optimal reliability criteria of a transmission system as well as generation system expansion planning in a society. This paper approaches a methodology for deciding the optimal reliability criteria for an optimal transmission system expansion planning. A deterministic reliability criteria, BRR (Bus Reserve Rate) is used in this study. The optimal reliability criteria, BRR/sup */, is decided at minimum cost point of total cost curve which is the sum of the utility cost associated with construction cost and the customer outage cost associated with supply interruptions for load considering bus reserve rate at load buses in long term forecasting. The characteristics and effectiveness of this methodology are illustrated by the case study using IEEE-RTS.

• Proceedings of the KIEE Conference
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• 2008.11a
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• pp.153-154
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• 2008

우리나라 전력수요의 지속적인 증가는 발전설비 및 송전망의 동반 성장으로 전력계통 규모가 꾸준히 확장되어 왔다. 그러나 이로 인해 전력계통 고장전류가 증가하는 문제가 발생하여, 그에 대한 대책으로 차단기 교체 등을 시행하고 있다. 이와 관련하여 고객서비스차원에서 한국전력은 전원 측 계통확장으로 인한 차단용량 부족 154kV 이상 수전고객에 대해서 차단기를 교체하도록 차단기 교체을 지원하기로 하였다. 이에 본 논문에서는 한국전력에서 시행하고자 하는 대용량고객 차단기 교체 지원내용에 대하여 알아보고자 한다.

• Proceedings of the KIEE Conference
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• 2008.11a
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• pp.155-156
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• 2008

제4차 전력수급기본계획 수립을 위한 발전소 건설의향 조사 수행이 지식경제부 주관하에 시행되었다. 이와 관련하여 발전소 건설의향조사 결과에 대한 계통영향 평가를 의뢰받아 수행하였다. 계통측면에서의 송전요금제도를 적용하여 계통보강비용 배분의 형평성 및 송전요금의 시장신호 기능 반영으로 경제적인 전력수급계획 수립을 도모하기위해 노력하였다. 이에 본 논문에서는 한국전력에서 수행한 발전소 건설의향 계통영향평가 내용에 대하여 알아보고자 한다.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.203-205
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• 2001

This paper is part of an ongoing project of KEPCO; 'A Study on Criteria and Standards for Transmission System Planning', The objective of this project is to develop the standards and procedures for transmission system planning. This involves reviewing published literatures, other documents of existing criteria and procedures, and various case studies of advanced countries which are already under the competitive electricity industry. This paper presents the result of evaluating Korean Power System as a pre-study for developing the Planning Standards of Korean Power System. For this, WSCC/NERC's performance criteria for planning transmission system, and KEPCO's 'Long Term Transmission System Planning Criteria' are considered. By doing this, the level of performance criteria which should be applied to Korean Power System and the detailed procedures which would be used in system test were reviewed.