The Control Strategy for the Adaptive Reactive Voltage of Low and Medium Voltage Distribution Network with High Photovoltaic Penetration
2020 INTERNATIONAL SYMPOSIUM ON ENERGY ENVIRONMENT AND GREEN DEVELOPMENT(2021)
摘要
The high permeability of photovoltaic power generation systems in medium and low voltage distribution networks brings challenges such as reverse power flow and voltage rise. Voltage violation becomes an important factor of restricting the massive access of distributed photovoltaics. In this paper, the reactive voltage control problem caused by the highpermeability photovoltaic access to the distribution network is studied. Based on the inverter reactive voltage control strategy, a distributed photovoltaic cosf (U, P) control model is proposed, and based on the grid-connected point voltage and the actual active output of photovoltaics, a distributed photovoltaic in-situ adaptive reactive voltage control strategy is proposed. After simulation verification, this control strategy can automatically adjust photovoltaic output make full use of the voltage support capability of distributed photovoltaics at various locations and periods, effectively make up for the shortcomings of traditional voltage regulation capabilities, and improve reactive voltage control capabilities.
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关键词
adaptive reactive voltage,medium voltage distribution network,voltage distribution network,photovoltaic
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