基于模糊控制的虚拟阻抗VSG功率解耦策略
TM933; 虚拟同步发电机(VSG)技术模拟了同步发电机的运行机制,使分布式发电能够为电网提供惯性并提高系统稳定性.当VSG接入低压微电网时,由于线路阻抗的阻感比过大的影响,VSG的有功环和无功环之间不能视为近似解耦,VSG输出的有功功率和无功功率之间存在耦合.另外如果VSG的功角太大,也将增加功率的耦合程度,增加解耦的难度.文中分析了VSG功率耦合机理,发现功率耦合会引起VSG输出功率的动态震荡,使无功功率产生稳态误差等问题,在此基础上,提出了一种利用模糊控制对VSG功角进行估算的自适应虚拟阻抗解耦策略.最后,通过MATLAB/Simulink构建VSG并网模型,以验证VSG功率耦合的抑制...
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Published in | 电测与仪表 Vol. 57; no. 14; pp. 135 - 141 |
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Main Authors | , , , |
Format | Journal Article |
Language | Chinese |
Published |
上海电力大学自动化工程学院,上海200090
25.07.2020
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Subjects | |
Online Access | Get full text |
ISSN | 1001-1390 |
DOI | 10.19753/j.issn1001-1390.2020.14.023 |
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Abstract | TM933; 虚拟同步发电机(VSG)技术模拟了同步发电机的运行机制,使分布式发电能够为电网提供惯性并提高系统稳定性.当VSG接入低压微电网时,由于线路阻抗的阻感比过大的影响,VSG的有功环和无功环之间不能视为近似解耦,VSG输出的有功功率和无功功率之间存在耦合.另外如果VSG的功角太大,也将增加功率的耦合程度,增加解耦的难度.文中分析了VSG功率耦合机理,发现功率耦合会引起VSG输出功率的动态震荡,使无功功率产生稳态误差等问题,在此基础上,提出了一种利用模糊控制对VSG功角进行估算的自适应虚拟阻抗解耦策略.最后,通过MATLAB/Simulink构建VSG并网模型,以验证VSG功率耦合的抑制. |
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AbstractList | TM933; 虚拟同步发电机(VSG)技术模拟了同步发电机的运行机制,使分布式发电能够为电网提供惯性并提高系统稳定性.当VSG接入低压微电网时,由于线路阻抗的阻感比过大的影响,VSG的有功环和无功环之间不能视为近似解耦,VSG输出的有功功率和无功功率之间存在耦合.另外如果VSG的功角太大,也将增加功率的耦合程度,增加解耦的难度.文中分析了VSG功率耦合机理,发现功率耦合会引起VSG输出功率的动态震荡,使无功功率产生稳态误差等问题,在此基础上,提出了一种利用模糊控制对VSG功角进行估算的自适应虚拟阻抗解耦策略.最后,通过MATLAB/Simulink构建VSG并网模型,以验证VSG功率耦合的抑制. |
Author | 陈昊 刘洋 张云飞 杨旭红 |
AuthorAffiliation | 上海电力大学自动化工程学院,上海200090 |
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DocumentTitle_FL | Strategy of power decoupling for VSG based on virtual impedance of fuzzy control |
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Title | 基于模糊控制的虚拟阻抗VSG功率解耦策略 |
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