ZENG Jinhui, HUANG Xi, WANG Can, et al. Study on Voltage Sag Flexible Management Strategy with Energy Storage Device[J]. 2022, 42(4): 33-39. DOI: 10.3969/j.issn.1008-0198.2022.04.007.
Study on Voltage Sag Flexible Management Strategy with Energy Storage Device
In order to reduce the influence of power grid voltage sag on the safe operation of sensitive loads
this paper proposes a flexible voltage sag management strategy with energy storage device
which can take into account voltage sag management while peak clipping and valley filling. Firstly
the DC component of power grid voltage is extracted by differentiating the dq component of power grid voltage to realize the accurate detection of power grid voltage sag amplitude and phase
and achieve the effect of improving the dynamic response speed of the system. Secondly
in the power grid voltage sag and recovery stage
the flexible switching strategy is used to realize the flexible compensation of sag voltage
so as to reduce the current impact of sensitive loads before and after voltage sag and ensure the steady-state accuracy of output voltage. Finally
a simulation model is built on MATLAB/Simulink platform to verify the correctness and effectiveness of the proposed flexible governance control strategy.
Xiaofang Chen, Li'an Chen, Dong Wang, el at. Study on safety operation of medium voltage distribution network[C]//E3S Web of Conferences.EDP Science,2021:197-204.