Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction
With the large-scale uncertain renewable energy connected to the grid, the frequency characteristics of the power grid are increasingly complex. Plagued by long response times and the inability to accurately track frequency regulation commands, traditional thermal power units call for urgent improve...
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| Format: | Article |
| Language: | zho |
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State Grid Energy Research Institute
2024-03-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202303041 |
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| author | Yibin WANG Feixiong CHEN Zhenguo SHAO Shuling ZHANG Weijun ZHANG Zhicheng LI |
| author_facet | Yibin WANG Feixiong CHEN Zhenguo SHAO Shuling ZHANG Weijun ZHANG Zhicheng LI |
| author_sort | Yibin WANG |
| collection | DOAJ |
| description | With the large-scale uncertain renewable energy connected to the grid, the frequency characteristics of the power grid are increasingly complex. Plagued by long response times and the inability to accurately track frequency regulation commands, traditional thermal power units call for urgent improvement in the performance of its participation in frequency regulation of automatic generation control (AGC) of thermal power by use of energy storage. Therefore, firstly, the mathematical model of frequency regulation performance index is established according to frequency regulation assessment rules. Besides, considering the output characteristics of the energy storage system, combined with the improved analytic hierarchy process to correct the weight coefficient of the frequency regulation sub index, the first-stage optimization model aiming at the optimal AGC performance is constructed. On this basis, in order to reduce the limit crossing and storage depth charging & discharging cases at the state of charge (SOC), the second-stage optimization model is constructed in order to minimize the SOC deviation. The simulation verification shows that the two-stage frequency regulation method proposed in this paper can improve the frequency regulation performance and benefits of the system of energy storage coordinated with thermal power unit, while reducing the energy storage in-depth charging & discharging cases and working life loss, thus improving the sustainability of frequency regulation auxiliary service of energy storage. |
| format | Article |
| id | doaj-art-b1a32a90edb74e54891b2265c10aad67 |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2024-03-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-b1a32a90edb74e54891b2265c10aad672025-08-20T02:58:50ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492024-03-01573839410.11930/j.issn.1004-9649.202303041zgdl-57-2-wangyibinTwo-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient CorrectionYibin WANG0Feixiong CHEN1Zhenguo SHAO2Shuling ZHANG3Weijun ZHANG4Zhicheng LI5College of Electrical Engineering and Automation, Fuzhou University(Fujian Smart Electrical Engineering Technology Research Center), Fuzhou 350108, ChinaCollege of Electrical Engineering and Automation, Fuzhou University(Fujian Smart Electrical Engineering Technology Research Center), Fuzhou 350108, ChinaCollege of Electrical Engineering and Automation, Fuzhou University(Fujian Smart Electrical Engineering Technology Research Center), Fuzhou 350108, ChinaState Grid Fujian Electric Power Research Institute, Fuzhou 350007, ChinaState Grid Fujian Electric Power Research Institute, Fuzhou 350007, ChinaState Grid Fujian Electric Power Research Institute, Fuzhou 350007, ChinaWith the large-scale uncertain renewable energy connected to the grid, the frequency characteristics of the power grid are increasingly complex. Plagued by long response times and the inability to accurately track frequency regulation commands, traditional thermal power units call for urgent improvement in the performance of its participation in frequency regulation of automatic generation control (AGC) of thermal power by use of energy storage. Therefore, firstly, the mathematical model of frequency regulation performance index is established according to frequency regulation assessment rules. Besides, considering the output characteristics of the energy storage system, combined with the improved analytic hierarchy process to correct the weight coefficient of the frequency regulation sub index, the first-stage optimization model aiming at the optimal AGC performance is constructed. On this basis, in order to reduce the limit crossing and storage depth charging & discharging cases at the state of charge (SOC), the second-stage optimization model is constructed in order to minimize the SOC deviation. The simulation verification shows that the two-stage frequency regulation method proposed in this paper can improve the frequency regulation performance and benefits of the system of energy storage coordinated with thermal power unit, while reducing the energy storage in-depth charging & discharging cases and working life loss, thus improving the sustainability of frequency regulation auxiliary service of energy storage.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202303041frequency regulation auxiliary serviceenergy storageautomatic generation controlimproved analytic hierarchy processtwo-stage frequency regulation |
| spellingShingle | Yibin WANG Feixiong CHEN Zhenguo SHAO Shuling ZHANG Weijun ZHANG Zhicheng LI Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction Zhongguo dianli frequency regulation auxiliary service energy storage automatic generation control improved analytic hierarchy process two-stage frequency regulation |
| title | Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction |
| title_full | Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction |
| title_fullStr | Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction |
| title_full_unstemmed | Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction |
| title_short | Two-stage Frequency Regulation Method for Energy Storage Coordinated with Thermal Power Unit Based on Weight Coefficient Correction |
| title_sort | two stage frequency regulation method for energy storage coordinated with thermal power unit based on weight coefficient correction |
| topic | frequency regulation auxiliary service energy storage automatic generation control improved analytic hierarchy process two-stage frequency regulation |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202303041 |
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