Fault Characteristics of PV and Energy Storage Integrated Grid-connected Converter under Different Control Strategy

DOI

10.2991/iceep-17.2017.164How to use a DOI?

Keywords

Photovoltaic, Grid-connected converter (GCC), Battery energy storage, Fault characteristics, Different control.

Abstract

PV and energy storage integrated grid-connected converter (GCC) is used popularly in distribution generation (DG) system. As there is a significant increase in the size and capacity of grid-connected power plants, the stability and reliability of the grid become more important. Different from the traditional synchronous generator, the fault characteristics of GCC are affected by its control strategy, thus this paper researches the fault characteristics of GCC under different control strategies. Firstly, active and reactive power decoupling control strategy and fault characteristics of GCC under PQ control are analyzed. The fault current characteristics of GCC under low voltage ride through (LVRT) control are studied as well. And equivalent current source model of the GCC under PQ and LVRT control during grid fault period are derived. Finally, the working principle and fault characteristics of GCC under droop control are studied. The influence that the voltage sag level at point of common coupling (PCC) has on the fault characteristics of GCC is researched, and equivalent model of GCC with droop control is obtained. The simulation results verify the correctness of the theoretical analysis.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Pengjiang Ge
AU  - Feng Li
AU  - Guanghui Hua
AU  - Xiaojing Dong
AU  - Yusen Wu
PY  - 2017/06
DA  - 2017/06
TI  - Fault Characteristics of PV and Energy Storage Integrated Grid-connected Converter under Different Control Strategy
BT  - Proceedings of the 2017 6th International Conference on Energy and Environmental Protection (ICEEP 2017)
PB  - Atlantis Press
SP  - 947
EP  - 954
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-17.2017.164
DO  - 10.2991/iceep-17.2017.164
ID  - Ge2017/06
ER  -