Multi-objective Distributed Secondary Control Method for Multi-VSG Independent Microgrid
Smart Grid|更新时间:2025-10-13
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Multi-objective Distributed Secondary Control Method for Multi-VSG Independent Microgrid
Modern Electric PowerVol. 42, Issue 2, Pages: 256-262(2025)
作者机构:
1.新疆大学 电气工程学院, 新疆维吾尔自治区 乌鲁木齐市 830047
2.可再生能源发电与并网控制教育部工程研究中心, 新疆维吾尔自治区 乌鲁木齐市 830047
作者简介:
基金信息:
Project Supported by Major Science and Technology Project of Xinjiang Uygur Autonomous Region (2022A01001-4); Project Supported by National Natural Science Foundation of China (52267005).
When a power grid composed of multiple virtual synchronous generators (abbr. VSGs) experiences external disturbances
traditional VSG control can lead to issues such as frequency and voltage deviations
low accuracy in reactive power sharing
and active power oscillations
which can easily cause system overload and instability. To address these problems
firstly
the droop characteristics and reasons for power oscillations of VSGs were analyzed. Secondly
a multi-objective coordinated secondary control strategy was proposed. In this strategy
the consistency frequency restoration control strategy for active power was used to adaptively adjust the reference value of active power to achieve frequency restoration and accurate proportional sharing of active power
the consistency and average voltage restoration control strategy for reactive power was used to adaptively compensate for voltage to achieve voltage restoration and accurate proportional sharing of reactive power. Finally
the effectiveness and robustness of this control strategy are verified through simulation.
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