Open AccessVoltage control and virtual synchronous generator control of HVDC interconnection line for improving stability of power system including large‐scale wind farm
Author(s) -
Nakamura Ayaka,
Alsharif Faramarz,
Umemura Atsushi,
Takahashi Rion,
Tamura Junji,
Sakahara Atsushi,
Tosaka Fumihito,
Nakamoto Ryosuke
Publication year - 2021
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/gtd2.12247
Subject(s) - control theory (sociology) , electric power system , interconnection , wind power , transient (computer programming) , voltage sag , ac power , permanent magnet synchronous generator , grid , engineering , computer science , voltage , power (physics) , electrical engineering , control (management) , telecommunications , physics , mathematics , geometry , quantum mechanics , artificial intelligence , operating system
Large‐scale integration of renewable energy sources (RESs) such as wind power can impact on the existing power system's stability. For example, there is a possibility that the wind farm (WF) cannot be maintained stable and then it is disconnected from the grid when the instantaneous voltage sag caused by a grid disturbance occurs. Moreover, the increasing integration of RESs in the power system can reduce the number of conventional synchronous generators (SGs) connected to the grid, and lead to a reduction of system inertia in the grid. The system inertia reduction can cause larger and faster frequency fluctuations during the transient period. Hence, this paper proposes a new control strategy composed of the voltage control for suppressing the voltage sag and the virtual synchronous generator (VSG) control based on the proportional‐integral‐differential (PID) fuzzy logic control (FLC) for maintaining the frequency stability which is performed by high voltage direct current (HVDC) interconnection line. The aim of the new control strategy is to improve the stability of the entire power system with large‐scale integration of RESs. The effectiveness of the proposed strategy is confirmed through the simulation analyses by PSCAD/EMTDC.