| 引用本文: | 李子恒,王康,李琦,李立,辛焕海.基于转速-电压坐标平面的暂态电压稳定分析[J].电力自动化设备,2023,43(1): |
| LI Ziheng,WANG Kang,LI Qi,LI Li,XIN Huanhai.Transient voltage stability analysis based on speed-voltage coordinate plane[J].Electric Power Automation Equipment,2023,43(1): |
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| 摘要: |
| 针对感应电机类动态负荷引起的暂态电压稳定问题，提出了一种基于转速-电压坐标平面的暂态电压稳定问题的分析方法，描述了感应电机类动态负荷在转速-电压坐标平面上的稳定边界。通过转速-电压坐标平面上电机运行点与稳定边界间的关系，可直观判断感应电机的加减速状态，并可清晰地解释感应电机类动态负荷在受到扰动后的暂态过程中引发电压失稳的机理。通过对比感应电机在转速-电压坐标平面上的工作点与所提的稳定边界间的关系，可以判断系统是否会出现电压失稳。通过单机无穷大系统及两区四机系统的仿真算例验证了所提分析方法的有效性。 |
| 关键词: 暂态电压稳定 稳定边界 感应电机 稳定分析 转速-电压坐标平面 |
| DOI：10.16081/j.epae.202204054 |
| 分类号:TM712 |
| 基金项目:国家电网公司科技项目(4000?202255071A?1?1?ZN) |
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| Transient voltage stability analysis based on speed-voltage coordinate plane |
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LI Ziheng1, WANG Kang1, LI Qi1, LI Li1, XIN Huanhai2
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1.State Grid Shaanxi Electric Power Co.,Ltd.,Xi’an 710048, China;2.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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| Abstract: |
| As for the transient voltage stability problem caused by the induction motor type dynamic load, an analytical method for transient voltage stability problem based on speed-voltage coordinate plane is proposed. The stability boundary of the induction motor type dynamic load on the speed-voltage coordinate plane is described. The accelerating and decelerating state of induction motor can be directly judged according to the relationship between the operating point of motor and the stability boundary on the speed-voltage plane, and the voltage instability mechanism of the induction motor type dynamic load caused by the transient process after the disturbance can be well explained. By comparing the relationship between the operating point of the induction motor and the proposed stability boundary on the speed-voltage coordinate plane, whether the system voltage is stable can be judged. The simulation examples of the single-machine infinite-bus system and the two-area four-machine system verify the effectiveness of the proposed analytical method. |
| Key words: transient voltage stability stability boundary induction motor stability analysis speed-voltage coor-dinate plane |
