Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units
The penetration rate of wind power in the power grid has been increasing year by year. A lot of contributions have been made to optimize the power supply structure, energy conservation and emission reduction, however, due to the natural fluctuation and uncertainty of wind speed, grid integration wit...
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| Format: | Article |
| Language: | zho |
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State Grid Energy Research Institute
2021-05-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202003163 |
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| author | Lei YANG Zhichao WANG Xin ZHOU Shengnan LI Peng HE Chuan XIANG Jie ZHANG Delin WANG |
| author_facet | Lei YANG Zhichao WANG Xin ZHOU Shengnan LI Peng HE Chuan XIANG Jie ZHANG Delin WANG |
| author_sort | Lei YANG |
| collection | DOAJ |
| description | The penetration rate of wind power in the power grid has been increasing year by year. A lot of contributions have been made to optimize the power supply structure, energy conservation and emission reduction, however, due to the natural fluctuation and uncertainty of wind speed, grid integration with large-scale wind power is bound to impact the frequency stability of the power grid. With regard to this problem, the doubly-fed induction generator (DFIG) control system was studied in this paper and then the primary frequency modulation control strategy following large-scale DFIG connection was established. On the basis of the existing droop control and virtual inertia control strategy, the droop control part is implemented by virtue of variable coefficient according to the input wind speed and the frequency fluctuation of grid side, as to improve the droop control characteristics. Additionally, the operating conditions of DFIG are classified, and the load reduction coefficient is used to reduce the curtailment of wind while the DFIG is running at limited power level. The effectiveness of the proposed primary frequency modulation control strategy is verified by means of the simulation of an actual power grid model with large-scale wind power grid connection. |
| format | Article |
| id | doaj-art-fd60d3b757be47d6ab8f356d060465e7 |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2021-05-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-fd60d3b757be47d6ab8f356d060465e72025-08-20T02:53:03ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492021-05-0154518619410.11930/j.issn.1004-9649.202003163zgdl-54-3-yangleiFrequency Stability Control Strategy for Large-scale Grid Connections with DFIG UnitsLei YANG0Zhichao WANG1Xin ZHOU2Shengnan LI3Peng HE4Chuan XIANG5Jie ZHANG6Delin WANG7Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, ChinaYunnan Power Dispatch Center, Kunming 650011, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, ChinaThe penetration rate of wind power in the power grid has been increasing year by year. A lot of contributions have been made to optimize the power supply structure, energy conservation and emission reduction, however, due to the natural fluctuation and uncertainty of wind speed, grid integration with large-scale wind power is bound to impact the frequency stability of the power grid. With regard to this problem, the doubly-fed induction generator (DFIG) control system was studied in this paper and then the primary frequency modulation control strategy following large-scale DFIG connection was established. On the basis of the existing droop control and virtual inertia control strategy, the droop control part is implemented by virtue of variable coefficient according to the input wind speed and the frequency fluctuation of grid side, as to improve the droop control characteristics. Additionally, the operating conditions of DFIG are classified, and the load reduction coefficient is used to reduce the curtailment of wind while the DFIG is running at limited power level. The effectiveness of the proposed primary frequency modulation control strategy is verified by means of the simulation of an actual power grid model with large-scale wind power grid connection.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202003163dfigfrequency stabilityvariable coefficient droop controlvirtual inertia controlvariable load reduction coefficientlarge-scale wind power grid connection |
| spellingShingle | Lei YANG Zhichao WANG Xin ZHOU Shengnan LI Peng HE Chuan XIANG Jie ZHANG Delin WANG Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units Zhongguo dianli dfig frequency stability variable coefficient droop control virtual inertia control variable load reduction coefficient large-scale wind power grid connection |
| title | Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units |
| title_full | Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units |
| title_fullStr | Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units |
| title_full_unstemmed | Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units |
| title_short | Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units |
| title_sort | frequency stability control strategy for large scale grid connections with dfig units |
| topic | dfig frequency stability variable coefficient droop control virtual inertia control variable load reduction coefficient large-scale wind power grid connection |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202003163 |
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