Open AccessSelf-adaption Dynamic Virtual Inertia Control Strategy of Doubly fed Variable Speed Pumped Storage Unit
Author(s) -
Zhichao Liu,
Changhong Deng,
Yahong Chen
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/342/1/012009
Subject(s) - decoupling (probability) , control theory (sociology) , inertia , automatic frequency control , power (physics) , frequency grid , grid , electric power system , engineering , dynamic demand , variable (mathematics) , power control , computer science , control (management) , control engineering , electrical engineering , physics , mathematics , voltage , mathematical analysis , geometry , classical mechanics , quantum mechanics , artificial intelligence
The power decoupling control characteristic of doubly fed variable speed pumped storage unit (VSPS) makes the rotor of VSPS unable to respond to the change of grid frequency and reduces the inertia of power system. In this paper, a self-adaption dynamic virtual inertia control strategy for VSPS is proposed. The strategy introduces correction factor to change the coefficient of control by detecting the change of dΔf/dt and automatically control the active power output of VSPS to provide dynamic frequency support for power grid. Simulation results demonstrate that by dynamically compensating the reference power of doubly fed converter, the strategy can effectively increase the frequency stability of power grid.