| Issue |
Sci. Tech. Energ. Transition
Volume 80, 2025
Innovative Strategies and Technologies for Sustainable Renewable Energy and Low-Carbon Development
|
|
|---|---|---|
| Article Number | 30 | |
| Number of page(s) | 11 | |
| DOI | https://doi.org/10.2516/stet/2025011 | |
| Published online | 26 March 2025 | |
Regular Article
Distributed PV auxiliary voltage control strategy in low voltage distribution network based on small AC signals
1
State Grid Hebei Electric Power Research Institute, Shijiazhuang 050021, PR China
2
Key Laboratory of Distributed Energy Storage and Micro-grid of Hebei Province, North China Electric Power University, Baoding 071003, PR China
* Corresponding author: 13315282094@163.com
Received:
3
December
2024
Accepted:
7
March
2025
In order to solve the problem of power flow to the distribution network and voltage overstep caused by the high proportion of distributed PV access, this paper proposes a coordinated voltage regulation strategy leveraging the reactive-active power control capabilities of PV systems. First, a systematic analysis of voltage deviation mechanisms induced by high-density PV integration is conducted. Second, a hybrid control framework is developed that synergistically coordinates reactive power compensation and active power curtailment, enabling adaptive voltage regulation across the distribution network. Third, a small-signal injection-based communication protocol is implemented to achieve decentralized coordination among multiple PV units. The simulation results demonstrate the effectiveness of the proposed strategy.
Key words: Photovoltaic generation / Low-voltage distribution network / Out-of-limit voltage / Maximum power estimation / Small AC signal
© The Author(s), published by EDP Sciences, 2025
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