期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：227
期号：3
页码：032001
DOI：10.1088/1755-1315/227/3/032001
出版社：IOP Publishing
摘要：Large-scale renewable energy connects with power system has posed great challenges to the safe and stable operation of power system, in order to solve the problem of frequency stability caused by large-scale photovoltaic connects with grid, a method of distributed frequency regulation by meanings of distributed battery energy storage system (DBESS) in grid-connected photovoltaic power station is proposed. By the way of paralleling a small capacity battery pack into the inverter DC side, fast active support is provided by battery pack when the system frequency is disturbed. Meanwhile, the inverter can adaptively determine the inverter permanent speed droop of itself according to the state of charge (SOC) of the battery pack during primary frequency regulation, to meet the system needs in different situations. Simulation result shows that the distributed frequency regulation proposed in this paper increases rapidity, accuracy and controllability of active control in the photovoltaic power station when system frequency disturbs, and it can meet the demand of the power system primary frequency regulation.
