| 引用本文: | 王耀函,张扬帆,蔡 光,等.计及电流限幅的构网型双馈风机暂态模型建模及适用性分析[J].电力系统保护与控制,2024,52(21):92-102.[点击复制] |
| WANG Yaohan,ZHANG Yangfan,CAI Guang,et al.Transient modeling and applicability analysis of a grid-forming doubly-fed inductiongenerator taking into account current limitation[J].Power System Protection and Control,2024,52(21):92-102[点击复制] |
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| 摘要: |
| 在构网型双馈风机(grid-forming doubly-fed induction generator, GFM-DFIG)暂态研究过程中，通常保留时间尺度较大的同步控制及外环控制环节进行暂态建模。为了适用于暂态能量函数法等传统暂态稳定分析方法，需要忽略暂态变化过程中外环的积分环节动态，进一步降为二阶模型，如此会带来一定的误差。针对忽略积分动态带来的误差问题，建立了考虑电流限幅环节的GFM-DFIG二阶暂态模型，通过暂态能量函数法计算暂态极限电压(transient stability limit voltage, TSLV)和极限切除时间(critical clear time, CCT)。然后，基于以上指标分析忽略积分动态对二阶暂态模型的误差影响。最后，将二阶系统与全阶模型仿真结果进行误差对比，基于CCT误差开展定量分析，揭示系统参数对相对误差的影响规律，并总结二阶模型的适用性范围。 |
| 关键词: 构网型双馈风机 电流限幅 暂态建模 暂态稳定分析 误差分析 |
| DOI：10.19783/j.cnki.pspc.240104 |
| 投稿时间：2024-01-22修订日期：2024-08-20 |
| 基金项目:国家电网总部科技项目资助(4000-202414073A- 1-1-ZN) |
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| Transient modeling and applicability analysis of a grid-forming doubly-fed inductiongenerator taking into account current limitation |
| WANG Yaohan1,ZHANG Yangfan1,CAI Guang2,LIANG Kai1,FU Xuejiao1,ZHANG Shurui2 |
| (1. State Grid Jibei Electric Power Research Institute, Beijing 100034, China; 2. Hebei Provincial Key Laboratory of
Distributed Energy Storage and Microgrid (North China Electric Power University), Baoding 071003, China) |
| Abstract: |
| In the study of transients in a grid-forming doubly-fed induction generator (GFM-DFIG), synchronous control and outer loop control over a large time scale are usually retained for transient modeling. To be suitable for the traditional transient stability analysis methods such as the transient energy function method, it is necessary to ignore the dynamic of the integral links of the external ring during the transient change process and to further reduce to the second-order model. This will create some errors. To solve the error problem caused by ignoring integral dynamics, a second order transient model of a GFM-DFIG considering current limiting is established. The transient energy function method is used to calculate the transient limiting voltage (TSLV) and critical clear time (CCT). Then, based on the above indices, the influence of integral dynamics on the error of the second-order transient model is ignored. Finally, an error comparison is made between the simulation results of the second-order system and the full-order model, and quantitative analysis is carried out based on the CCT error to reveal the influence law of system parameters on the relative error, and the applicability range of the second-order model is summarized. |
| Key words: GFM-DFIG current limitation transient modeling transient stability analysis error analysis |
