Transient Voltage Control Strategy for Large-Scale Photovoltaic Access to Sending-End System
DOI:
https://doi.org/10.13052/spee1048-5236.4532Keywords:
Transient voltage control, condenser, dung beetle optimization algorithm, dynamic reactive power compensation optimization, fuzzy adaptive controlAbstract
This paper tackles the challenge of insufficient transient voltage support capability in sending-end systems following large-scale photovoltaic (PV) integration. A novel two-tier hierarchical control strategy is proposed, specifically directed toward the grid-connected point and the photovoltaic power station collection point. The grid-connected point control layer establishes a transient voltage security assessment index based on the voltage recovery boundary. It also presents an optimization method for SVC installation location, followed by a capacity optimization model that balances voltage security and investment costs, solved using the Dung Beetle algorithm. The collection point control layer improves transient voltage recovery by dynamically quantifying the distance to the recovery boundary and integrating it with fuzzy adaptive reactive power control for PV stations. Validation of the method’s efficacy is achieved via simulations conducted on an augmented Nordic test system.
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