Virtual synchronous generator of PV generation without energy storage for frequency support in autonomous microgrid
| Autor: | Huayi Li, Jikai Chen, Yang Zhou, Cheng Zhong, Yueming Lv, Yang Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Signal Processing (eess.SP)
Computer science Photovoltaic system Energy Engineering and Power Technology Permanent magnet synchronous generator Systems and Control (eess.SY) AC power Electrical Engineering and Systems Science - Systems and Control Energy storage Power (physics) Control theory FOS: Electrical engineering electronic engineering information engineering Voltage droop Microgrid Diesel generator Electrical and Electronic Engineering Electrical Engineering and Systems Science - Signal Processing |
| Popis: | In autonomous microgrids frequency regulation (FR) is a critical issue, especially with a high level of penetration of the photovoltaic (PV) generation. In this study, a novel virtual synchronous generator (VSG) control for PV generation was introduced to provide frequency support without energy storage. PV generation reserve a part of the active power in accordance with the pre-defined power versus voltage curve. Based on the similarities of the synchronous generator power-angle characteristic curve and the PV array characteristic curve, PV voltage Vpv can be analogized to the power angle {\delta}. An emulated governor (droop control) and the swing equation control is designed and applied to the DC-DC converter. PV voltage deviation is subsequently generated and the pre-defined power versus voltage curve is modified to provide the primary frequency and inertia support. A simulation model of an autonomous microgrid with PV, storage, and diesel generator was built. The feasibility and effectiveness of the proposed VSG strategy are examined under different operating conditions. Comment: Accepted by International Journal of Electrical Power and Energy Systems |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|