| 引用本文: | 刘子腾,徐永海,陶顺.新能源并网下谐波责任定量评估方法研究现状与展望[J].电力自动化设备,2020,40(11): |
| LIU Ziteng,XU Yonghai,TAO Shun.Research status and prospect of harmonic responsibility quantitative evaluation method under grid-connection of new energy[J].Electric Power Automation Equipment,2020,40(11): |
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| 摘要: |
| 新能源并网逆变器的输出电流常存在谐波不能达标的问题，且各逆变器间谐波相互作用复杂，给谐波责任评估带来了新问题。首先对谐波责任定量评估模型进行介绍；然后对现有谐波阻抗估计方法进行归类，明确各方法的适用条件；进而讨论谐波电压评估指标及其他评估指标的合理性；基于现有方法的局限性，探讨了新能源并网条件下的谐波新特性和谐波责任评估面临的新问题及难点；最后，对未来谐波责任评估研究进行了展望。 |
| 关键词: 新能源并网 并网逆变器 谐波责任 谐波阻抗 评估指标 |
| DOI：10.16081/j.epae.202010012 |
| 分类号:TM72 |
| 基金项目:国家自然科学基金资助项目(51777066) |
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| Research status and prospect of harmonic responsibility quantitative evaluation method under grid-connection of new energy |
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LIU Ziteng, XU Yonghai, TAO Shun
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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
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| Abstract: |
| The output current of the grid-connected new energy inverter often has the problem that the harmonics cannot reach the standard, and the harmonic interaction among inverters is complex, which brings new problems to harmonic responsibility evaluation. Firstly, the quantitative evaluation model of harmonic res-ponsibility is introduced. Then, the existing harmonic impedance estimation methods are classified and the applicable conditions of each method are clarified. Then the rationality of harmonic voltage evaluation index and other evaluation index is discussed. Based on the limitations of existing methods, the new harmonic characteristics and the new problems and difficulties of harmonic responsibility evaluation are discussed. Finally, the research of harmonic responsibility evaluation in the future is prospected. |
| Key words: grid-connection of new energy grid-connected inverter harmonic responsibility harmonic impe-dance evaluation indicators |
