• Journal of Korean Society of Transportation
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• v.16 no.1
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• pp.25-34
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• 1998

본연구의 목적은 경부고속철도역의 입지가 도시간 인구분포와 도시경제에 미치는 영향을 분석하 는 데 있다. 인구분포 결정식의 추정결과를 토대로 하여 고속철도의 건설에 따른 도시시스템의 변화를 살펴보면 대도시내 인구분산화가 이루어지면서 대도시와 중소도시간 인구불균등은 심화될것으로 예상된 다. 고속철도의 역사가 입지하는 도시의 경제활동이 증가한 점을 감안하면, 향후, 서울 , 대구, 부산등의 도시경제 수준은 상대적으로 열악해 지고 천안과 대전은 고속철동역 유치로 인하여 도시성장 기반을 구 축할 수 있을 것이다. 지역개발차원에서 수도권 남부지역에 고속철도역을 입지시켜 서울의 중추기능을 분산시킬 필요가 있다. 고속철도 개발을 통해서 수도권 남부지역을 중심으로 도시권이 형성되어 수도권 내 2대 공간체계가 개발된다면 서울도시권에 대한 기존의 개발압력을 줄이면서 수도권내 남부도시권은 천안 및 대전과 연계되어 광역적인 개발이 가능할 것이다.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.215-217
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• 2002

본 논문에서는 2004, 2007년 한전 계통에 대해 상정사고 시 수도권 지역에서의 순동 무효전력원 필요성, 확보 방안을 제시하였다. 수도권 지역에서 순동 무효전력원의 필요성을 제시하였고, 수도권 지역의 모든 354KV 이상 송전선로 1루트 상정사고 리스트를 작성하여 전압 안정도 측면에서 문제가 발생하는 상정사고를 선정하였다. 선정된 상정사고에 PSS/E를 사용한 QV곡선을 이용하여 순동 무효전력 확보방안을 제시하였다.

• Journal of IKEEE
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• v.11 no.4
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• pp.239-246
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• 2007

One of the most serious problems in KEPCO power system is the load centralization in the capital area. The load capacity in the capital area is almost 40% of the total load. However, the generation capacity in this area is just 16% of the total generation. The inequality, between the power demand and supply, in this area needs the power transmission from other regions. The simplest method to solve the problem is the installation of power plants or the addition of high-capacity transmission line in the metropolitan area. However, because of the concentration of human and material resources, there is a difficulty in the installation of the generation and transformer facility. As a result, instead of the installation of large scale facilities, the approach to maximize the application of existing facilities is required. In this research, we will develop a scheme with an HVDC installation for enhancing power transfer capability by utilizing the existing transmission lines.

• Journal of the Korean Regional Science Association
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• v.33 no.3
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• pp.61-78
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• 2017

Among several policies for industrial decentralization introduced since the 1960s, business relocation grant policies put a heavy financial burden on central and local governments. This study investigates the change in the likelihood of manufacturing establishments' relocation to the non-SMA associate with the change in business relocation grant policies. Using the mining and manufacturing survey data from 1996 to 2014, manufacturing firms' relocation decision model in nested logit structure was estimated. The data showed that the proportion of movements from the SMA to the non-SMA significantly increased after the introduction of the grant policies. However, estimation results of firms' relocation decision model indicated that the likelihood of firms relocating from the SMA to the non-SMA decreased after the introduction of the grant policies. In particular, firms' likelihood to move into the rural regions is even lower in the period of the grant extension. This suggests that increasing rate of relocations toward the rural regions may have been driven by the growing advantage of rural locations, such as low land rent and improvement in market accessibility, rather than the grants per se. This implies that the alleviation of physical and environmental constraints of the rural regions and the creation of business friendly environment such as easy access to premises at reasonable prices and strengthened linkage with the SMA, rather than simple provision of business relocation grants, needed to attract businesses in the rural regions.

• Journal of the Korean Regional Science Association
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• v.34 no.2
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• pp.21-34
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• 2018

The purpose of this study is to analyze the spatial-temporal proliferation of individual factories in the Seoul Metropolitan Area and to provide policy implications. The location of the factory is divided into individual locations and planned locations. In the case of individual locations, it takes a long time to establish factories. Also, due to high cost and regulation, the establishment of individual factories is not easy. However, since the establishment process is simple and the price of land is low, the establishment of individual factories has led to an increase in the number of individual factories. The problem of the undeveloped factories is that the lack of infrastructure such as the road and environmental pollution treatment facilities around the factory deteriorates the pleasant environment and the cityscape and deteriorates the health of the residents in the surrounding area. In this study, we analyzed the location of individual factories established in the Seoul metropolitan area from 2001 to 2016 by using ArcGIS Pro. The results of the analysis are as follows. First, individual location factories are formed around existing industrial complexes and industrial sites. The reason for this is considered to be the external effect that can be obtained from the surrounding area. Secondly, since the Seoul city's individual location factories are established in many residential areas, it shows the conflicting result of the mixture of residence and factory. Third, the Gyeonggi province's individual location factories have a high proportion of non-urban areas. This is because the Gyeonggi province's management area occupies a larger proportion than other areas in Gyeonggi province. This study analyzed the spatial - temporal spreading process of individual factories and the unfolding of individual factories in the metropolitan area, and it can provide policy implications to control the over development of individual factories in the future.

• Journal of the Korean Regional Science Association
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• v.32 no.3
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• pp.17-27
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• 2016

In order to solve the problem of how to estimate the residential segregation, the Spatial Concentration Index(SCI) and Location quotient(LQ) are able to be one of alternative methods, and a comprehensive analysis of the residential segregation phenomenon in the seoul metropolitan area is the aim of the study. The results of SCI show that residential concentration areas in low-rent are some Gyeonggi-do's downtown(Bucheon-si, Suwon-si) as well as rural and urban-rural complex outskirts of the metropolitan area. The results of changing of SCI from 2011 to 2014, downward changes appeared thirteen districts and upward changes appeared fourteen districts. Especially downward change district was Sosa-gu, Bucheon-si and upward change district was Yeongtong-gu, Suwon-si. In conclusion, that high rent level groups are more concentration on specific area than low rent level groups. By decreasing residential concentration districts in low-rent level group, 'diversity' districts have been increasing in seoul metropolitan but the phenomenon of residential concentration in high and low level group have been being intensified. These results could be confirmed by quantitative through LQ. Methodologically LQ would strengthen the explanatory power of SCI, and ongoing research of SCI in conjunction with other quantitative methods will need.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.12
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• pp.502-512
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• 2019

To examine the problem structure of balanced regional development policy and identify the causes of the gap between the capital and non-capital areas, this study examined the causal structure in terms of the concentration and distribution of functions in the metropolitan area and non-capital area and explored the policy leverage. As a research method, the causal map was drawn using System Dynamics techniques and policy leverage was derived through an exploration of the feedback structure. In particular, the causes of the problems in balanced regional development policies were approached by system accidents rather than by single-circuit accidents, and causality analysis was performed among the variables constituting balanced regional development policies based on system accidents. In particular, it singled out 31 variables, developed 13 feedback loops, and confirmed four major policy leverages, including relocation of the capital function, local decentralization policies, consistent development, and investment practices centered on the Non­Capital Area. Subsequently, a follow-up study by computer simulation is needed by modeling the structure of the system to identify the ripple effect of the policies of the Capital Area on the Non­Capital Area.

• Journal of the Korean Geographical Society
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• v.42 no.6
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• pp.914-929
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• 2007

This study analyzes the accessibility patterns for commuting trips in Seoul Metropolitan Area using National Census Data between 1990 and 2000. the results show that the accessibility increased between 1990 and 1995, while it decreased between 1995 and 2000, due to the raised commuting time. Seoul, Kangju, Yeuju, Yangpyoung, Gapyoung show relatively high accessibility. The GINI parameters tell that the regional balance for commuting accessibility were worsen between 1990 and 1995, compared to that between 1995 and 2000. The accessibility patterns for commuting to Seoul were also analyzed and the result shows that the accessibility reduced between 1995 and 2000. Kwachun, Kwangju, Sungnum are found to have very high accessibility to Seoul, which is close to Soeoul with high percentage of incoming commuting trips. These results indicate that even continuous transport infrastructure supplies were not enough to solve the congestion problems for commuting trips in Seoul Metropolitan Area because of the induced traffic and traffic congestion.

• Journal of Labour Economics
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• v.41 no.2
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• pp.61-88
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• 2018

This paper examines the impact of internal migration on wage growth among college graduates using Propensity Score Matching methods. We define migration as moving between Seoul Metropolitan Area (SMA) and non-SMA based on the locations of graduates' first and second jobs. We also take the direction of migration into account for examining the wage premium in SMA. In order to estimate the impact of migration on wage growth, we use the Graduate Occupational Mobility Survey (2010GOMS) coupled with other supplementary data such as College Scholastic Ability Test score and local characteristic variables. The results reveals that graduates moving from SMA to non-SMA do not experience significant wage growth. However, we find that graduates moving from non-SMA to SMA experience an increase in their monthly wage about 170,000~186,000 KRW on average (9.5~10.3% of their monthly wage on the first job).

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.163-164
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• 2015

LNG복합발전은 수요지 인근에 건설이 가능한 장점이 있어 수도권 인근 발전소 중 상당한 부분을 차지하고 있다. 이러한 LNG 복합발전은 수도권 부하비율 감소에 따라 발전량이 줄어들게 된다. 2018년 계통데이터를 기반으로 수도권의 부하수준이 70%까지 떨어졌을 때, 거의 모든 수도권 복합발전이 정지함을 확인할 수 있다. 이 때, 신가평과 강원을 잇는 765kV급 융통선로의 2회선 상정사고 발생 시 수도권 무효전력 공급원이 줄어들어 전압이 불안정해진다. 이와 같은 상정사고를 대비해 수도권 복합발전 중 일부는 제약운전을 시행해야 한다. 본 논문에서는 제약운전을 하는 수도권 LNG복합발전의 발전량을 대체할 수 있는 대안으로 적절한 위치에 FACTS설비를 투입하고자 한다. FACTS설비를 효율적으로 운전시키기 위해 LNG복합발전의 발전량 감소에 따른 전압변화에 대해 Tangent Vector Component가 가장 큰 수도권 345kV 모선을 선정해 STATCOM을 투입하고 그 결과를 확인한다. 이를 확인하기 위한 방안으로 제약운전을 하는 복합발전의 발전량을 감소시키고 관찰하고자 하는 모선과 거리가 먼 비수도권 발전량을 증가시켜 수급을 맞춘 뒤 전압의 변화를 관찰한다. 이 때, 하나의 계통을 2개의 지역으로 구역화하여 전압을 확인할 수 있는 F-V 해석을 이용한다.