| 引用本文: | 方伟,刘怀东,秦婷,王锦桥,冯志强.含大型光伏电站的动态安全域[J].电力自动化设备,2019,39(3): |
| FANG Wei,LIU Huaidong,QIN Ting,WANG Jinqiao,FENG Zhiqiang.Dynamic security region with large-scale photovoltaic plant[J].Electric Power Automation Equipment,2019,39(3): |
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| 摘要: |
| 从域的角度研究大型光伏电站对电力系统暂态稳定性的影响，用等容量的光伏电站替换常规发电机，计算含大型光伏电站的动态安全域(LPV-DSR)。通过对典型电力系统的大量仿真发现LPV-DSR边界仍可以用超平面拟合。通过与接入光伏电站前系统的DSR进行比较，得出3条经验规律：LVP-DSR边界与接入光伏电站前系统的DSR边界近似平行；从利于系统暂态稳定性的角度看，光伏电站换流器的最佳控制策略为定有功功率控制和定交流电压控制；同一种控制策略下，DSR范围随着接入系统光伏容量的增大而单调变化。 |
| 关键词: 大型光伏电站 暂态 稳定性 动态安全域 拟合法 时域仿真 换流器控制策略 |
| DOI：10.16081/j.issn.1006-6047.2019.03.030 |
| 分类号:TM712;TM615 |
| 基金项目: |
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| Dynamic security region with large-scale photovoltaic plant |
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FANG Wei1, LIU Huaidong2, QIN Ting1, WANG Jinqiao3, FENG Zhiqiang4
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1.Department of Electrical Engineering, Tianjin University, Tianjin 300072, China;2.Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;3.State Grid Suzhou Power Supply Company, Suzhou 215004, China;4.State Grid Qinhuangdao Power Supply Company, Qinhuangdao 066000, China
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| Abstract: |
| The influence of large-scale photovoltaic plant on transient stability of power system is researched from the perspective of domain, and the conventional generator is replaced by the photovoltaic plant with equal capacity to calculate the LPV-DSR(Dynamic Security Region with Large-scale PhotoVoltaic plant). Extensive simulations of typical power system show that the boundary of LPV-DSR can still be fitted by hyperplane. Three conclusions are obtained by the comparison with DSR of the system before the connection of photovoltaic plant: the boundary of LPV-DSR is approximately parallel to the DSR boundary of the system before the photovoltaic plant connected; from the perspective of system transient stability, the optimal control strategy of photovoltaic converter is constant active power control and constant AC voltage control; the DSR range changes monotonously with the increase of grid-connected photovoltaic capacity under the same control strategy. |
| Key words: large-scale photovoltaic plant transients stability dynamic security region fitting method time-domain simulation converter control strategy |
