Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Voltage Stabilization Method of Distribution System Using Battery Energy Storage System and Step Voltage Regulator

  • Kim, Byung-ki (Dept. of Electrical and Electronic Engineering, Korea University of Technology) ;
  • Park, Jae-Beom (Dept. of Electrical and Electronic Engineering, Korea University of Technology) ;
  • Choi, Sung-Sik (Dept. of Electrical and Electronic Engineering, Korea University of Technology) ;
  • Jang, Moon-Seok (Jeju Global Research Center, Korea Institute of Energy Research) ;
  • Rho, Dae-Seok (Dept. of Electrical and Electronic Engineering, Korea University of Technology)
  • Received : 2016.03.07
  • Accepted : 2016.07.09
  • Published : 2017.01.02
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Abstract

In order to maintain customer voltages within the allowable limit($220{\pm}13V$) as much as possible, tap operation strategy of SVR(Step Voltage Regulator) which is located in primary feeder, is widely used for voltage control in the utilities. However, SVR in nature has operation characteristic of the delay time ranging from 30 to 150 sec, and then the compensation of BESS (Battery Energy Storage System) during the delay time is being required because the customer voltages in distribution system may violate the allowable limit during the delay time of SVR. Furthermore, interconnection of PV(Photovoltaic) system could make a difficultly to keep customer voltage within the allowable limit. Therefore, this paper presents an optimal coordination operation algorithm between BESS and SVR based on a conventional LDC (Line Drop Compensation) method which is decided by stochastic approach. Through the modeling of SVR and BESS using the PSCAD/EMTDC, it is confirmed that customer voltages in distribution system can be maintained within the allowable limit.

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References

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