蔡钰泽,胡畔,曹侃,王波,李楚,李振兴
CAI Yuze,HU Pan,CAO Kan,WANG Bo,LI Chu,LI Zhenxing

• 1:三峡大学电气与新能源学院
• 2:国网湖北省电力有限公司电力科学研究院

摘要(Abstract)：

构网型光伏采用储能配合的方法在工程上存在建设成本高、占地协商困难等问题，无储能的构网控制在天气变化时难以寻找MPPT（最大功率点跟踪）的工作点。对此，提出一种考虑预留功率、结合虚拟同步控制的构网控制策略，并设计了一种预防直流母线电压崩溃的控制器以稳定直流母线电压。在Simulink上建立了考虑预留功率的无储能构网型光伏机组控制模型，并在仿真平台RT-LAB上结合电力电子实物进行仿真，得出仿真波形。仿真结果表明，该策略能够在多种场景下找到MPPT的工作点，稳定地输出有功功率和无功功率，验证了控制策略的有效性。
In engineering applications, the use of energy storage to support grid-forming photovoltaic(GFM PV) units faces challenges such as high construction costs and difficulties in land negotiations. However, without energy storage, grid-forming control struggles to find the operating point of maximum power point tracking(MPPT) during weather changes. To address this, a grid-forming control strategy that considers reserved power and integrates virtual synchronous control(VSC) is proposed. Additionally, a controller is designed to prevent DC bus voltage collapse, stabilizing the DC bus voltage. A control model for GFM PV units without energy storage, considering reserved power, is developed in Simulink, and simulations are conducted on the RT-LAB platform in conjunction with physical power electronics to obtain the simulation waveform. The simulation results demonstrate that the proposed strategy can find the operating point of MPPT in various scenarios, ensuring stable outputs of active and reactive power, thereby verifying the effectiveness of the control strategy.

关键词(KeyWords)： 光伏;构网;改进恒定电压法;最大功率点跟踪;储能
PV;grid-forming;improved constant voltage method;maximum power point tracking;energy storage

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（52077120）

作者(Author): 蔡钰泽,胡畔,曹侃,王波,李楚,李振兴
CAI Yuze,HU Pan,CAO Kan,WANG Bo,LI Chu,LI Zhenxing

DOI: 10.19585/j.zjdl.202412008

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