Distributed PV Consumption Control Strategy and Performance Analysis in Low Voltage Distribution Network

Wei TANG; Yongxiang CAI; Tianrui LI; Ouyang XU

doi:10.16513/j.cnki.10-1427/tk.2018.06.001

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Distributed Energy ›› 2018, Vol. 3 ›› Issue (6) : 1-12. DOI: 10.16513/j.cnki.10-1427/tk.2018.06.001

Operation Analysis and Control of Active Distribution Network

Distributed PV Consumption Control Strategy and Performance Analysis in Low Voltage Distribution Network

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Abstract

For the status of rapidly increasing distributed photovoltaic (PV) penetration in low voltage distribution network (LVDN), several strategies that enhance the PV consumption ability in LVDN are researched and analyzed in detail. Distributed PV and distributed energy storage system (ESS) in LVDN are modeled in Matlab/Simulink platform. Moreover, control effectiveness on voltage deviation, power loss and power factor under the two strategies that are based on PV inverter reactive power and ESS active power respectively is analyzed and compared. The research results indicate that the voltage regulation ability under reactive power control strategy based on PV inverter is limited in LVDN, and the power loss and power factor are negatively affected under the strategy; the active power control based on ESS can regulate voltage relative effectively and optimize power loss, but the active power control require ESS has a large capacity, and it is not conducive to optimizing power factor. Based on this, a coordinated control strategy with inverter reactive power and ESS active power is proposed. The simulation results show that the coordinated control strategy can regulate voltage efficiently and has the better comprehensive optimal results. Meanwhile, it can maximize the use of PV inverter reactive power capability, and reduce the ESS capacity requirements.

Key words

low voltage distributed network / distributed photovoltaic / inverter reactive power regulation / storage dispatch / coordinated active and reactive power

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Wei TANG , Yongxiang CAI , Tianrui LI , et al. Distributed PV Consumption Control Strategy and Performance Analysis in Low Voltage Distribution Network[J]. Distributed Energy Resources. 2018, 3(6): 1-12 https://doi.org/10.16513/j.cnki.10-1427/tk.2018.06.001

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