TITLE:
Frequency Control of Power System with Solar and Wind Power Stations by Using Frequency Band Control and Deadband Control of HVDC Interconnection Line
AUTHORS:
Kimiko Tada, Takamasa Sato, Atsushi Umemura, Rion Takahashi, Junji Tamura, Yoshiharu Matsumura, Tsukasa Taguchi, Akira Yamada
KEYWORDS:
High Voltage Direct Current (HVDC), System Frequency Control, PV Power Generation, Wind Power Generation, Notch Filter, Deadband
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.6 No.9,
September
25,
2018
ABSTRACT: In recent years, environmental problems are becoming serious and renewable energy has attracted attention as their solutions. However, the electricity generation using the renewable energy has a demerit that the output becomes unstable because of intermittent characteristics, such as variations of wind speed or solar radiation intensity. Frequency fluctuations due to the installation of large scale wind farm (WF) and photovoltaics (PV) into the power system is a major concern. In order to solve the problem, this paper proposes two control methods using High Voltage Direct Current (HVDC) interconnection line to suppress the frequency fluctuations due to large scale of WF and PV. Comparative analysis between these two control methods is presented in this paper. One proposed method is a frequency control using a notch filter, and the other is using a deadband. Validity of the proposed methods is verified through simulation analyses, which is performed on a multi-machine power system model.