Abstract
Efforts to reduce greenhouse gas emissions constitute a worldwide trend. According to this trend, there are many plans in place for the replacement of conventional electric power plants operating using fossil fuels with renewable energy sources (RESs). Owing to current needs to expand the RES penetration in accordance to a new National power system plan, the importance of RESs is increasing. The RES penetration imposes various impacts on the power system, including transient stability. Furthermore, the fact that they are distributed at multiple locations in the power system is also a factor which makes the transient impact analysis of RESs difficult. In this study, the transient impacts attributed to the penetration of RESs are analyzed and compared with the conventional Korean electric power system. To confirm the impact of the penetration of RESs on transient stability, the effect was analyzed based on a single machine equivalent (SIME) configuration. Simulations were conducted in accordance to the Korean power system by considering the anticipated RES penetration in 2030. The impact of RES on transient stability was provided by a change in CCT by increasing of the RES penetration.
Highlights
As part of the expended efforts to reduce greenhouse gas emissions in recent years, the installation of renewable power sources (RESs) is continually increasing
According to the recently announced the 8th basic plan for the supply and demand of electricity, 60 GW of renewable power will be installed in the Korean power system by 2030
This paper investigated the impact of the distributed penetration of RESs on transient stability
Summary
As part of the expended efforts to reduce greenhouse gas emissions in recent years, the installation of renewable power sources (RESs) is continually increasing. In the case of RES, such as the wind power generations and photovoltaics, the output cannot be arbitrarily adjusted Based on these characteristics, the study of the cooperation of RESs must be able to reflect their output variations. Studies of the impact of RES penetration on the individual power grid have been conducted [9,10,11,12,13], in view of the increased importance of the penetration of RESs and their influences on the stability of the electric power system. It was shown that the main factor that affected the transient stability were the locations of the RESs and the adjustment of the output of conventional generators. The impact of the penetration of RESs in the Korean power system was represented
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