The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Large-scale Adoption Method of Distribution System Interconnected with PV System by Energy Storage System

전기저장장치를 이용한 태양광전원이 연계된 배전계통 수용성향상 방안에 관한 연구

  • Nam, Yang-Hyun (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Choi, Sung-Sik (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Kang, Min-Kwan (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Lee, Hu-Dong (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Park, Ji-Hyun (Dept. of Electrical Engineering, Korea University of Technology and Education) ;
  • Rho, Dae-Seok (Dept. of Electrical Engineering, Korea University of Technology and Education)
  • Received : 2018.05.03
  • Accepted : 2018.06.28
  • Published : 2018.08.01
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Abstract

If large-scale PV systems are continuously interconnected to distribution system, customer voltages could violate the allowable voltage limit($220{\pm}13V$) according to reverse power flow of PV system. In order to solve these problems, this paper proposes flexible adoption evaluation algorithm of PV system in distribution system which estimates proper introduction capacity and location of ESS(energy storage system) for keeping customer voltages within allowable voltage limit based on various operating scenarios related with connecting point and capacity of PV system. And also this paper proposes modeling of ESS, SVR(step voltage regulator) and PV system using PSCAD/EMTDC S/W and analyzes characteristics of customer voltages and the adoption ability of PV system in distribution system. From the simulation results, it is confirmed that proposed algorithm is useful for large-scale adoption of PV system in distribution system to maintain customer voltages within allowable voltage limit.

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References

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