Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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一種適用交直流混合微電網(wǎng)的組網(wǎng)方法及控制策略研究

來源:電工電氣發(fā)布時間:2024-08-01 15:01瀏覽次數(shù):286

一種適用交直流混合微電網(wǎng)的組網(wǎng)方法及控制策略研究

張云龍,康慨,唐暢,鄭開琦,施念,曹傳勝
(湖北省電力規(guī)劃設計研究院有限公司,湖北 武漢 430040)
 
    摘 要:交直流混合微電網(wǎng)網(wǎng)架結(jié)構(gòu)是能量管理、控制、保護和穩(wěn)定的基礎。根據(jù)交直流混合微電網(wǎng)的特點,提出了一種基于能量守恒原則及分區(qū)、分層匹配原則的組網(wǎng)設計流程,并給出了改進交直流混合微電網(wǎng)主從協(xié)調(diào)控制策略,采用一種新型主控制器,當儲能逆變器由 PQ 控制切換至 V/f 控制時,能夠克服暫態(tài)時刻將產(chǎn)生較大的電壓、頻率和功率波動,保證微電網(wǎng)安全穩(wěn)定運行?;谀硨嶋H風光儲柴微電網(wǎng)項目,設計拓撲結(jié)構(gòu)并搭建 PSCAD 仿真模型,驗證了所提組網(wǎng)設計和主從控制策略的有效性,為未來大規(guī)模交直流混合微電網(wǎng)的規(guī)劃設計及運行提供參考。
    關(guān)鍵詞: 混合微電網(wǎng);組網(wǎng)方法;新型主控制器;穩(wěn)定運行
    中圖分類號:TM71     文獻標識碼:A     文章編號:1007-3175(2024)07-0027-05
 
Research on a Networking Method and Control Strategy
Suitable for AC/DC Hybrid Microgrid
 
ZHANG Yun-long, KANG Kai, TANG Chang, ZHENG Kai-qi, SHI Nian, CAO Chuan-sheng
(Power China Hubei Electric Engineering Co., Ltd, Wuhan 430040, China)
 
    Abstract: The structure of the AC/DC hybrid microgrid is the basis of energy management, control, protection and stability. According to the characteristics of the AC/DC hybrid microgrid, a networking design process based on the principle of energy conservation and the principle of zoning and hierarchical matching is proposed. On this basis, the improved master-slave coordination control strategy of AC/DC hybrid microgrid is proposed, and a new type of master controller is adopted. When the energy storage inverter is switched from PQ control to V/f control, it can overcome the transient moment and produce large voltage, frequency and power fluctuations, so as to ensure the safe and stable operation of the microgrid. Based on an actual PV-wind-storage-diesel microgrid project, the topology structure was designed and the PSCAD simulation model was set up, which verified the effectiveness of the proposed networking design and master-slave control strategy,and provided a reference for the planning, design and operation of large-scale AC/DC hybrid microgrid in the future.
    Key words: hybrid microgrid; networking method; new type of master controller; stable operation
 
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