中国电机工程学报2018，Vol.38Issue(4)：999-1005,后插4,8.DOI:10.13334/j.0258-8013.pcsee.170397
含双馈风力发电场的多机系统暂态 功角稳定性分析方法
A Method to Analyze the Transient Angle Stability of Multi-machine System With DFIG-based Wind Farm
摘要
Abstract
In the wake of increasing capacity of wind power, the impact of wind farms on transient stability of power system becomes no longer negligible. In this paper, a method for analyzing transient angle stability of multi-machine system with DFIG-based wind farm was proposed. Based on the theoretical analysis of the influence of wind farms' active and reactive power output on transient stability of power system, the power external characteristic of wind farm is equivalent to grounding admittance. By contracting the bus admittance matrix, the grounding admittance which contains active and reactive power information was melted into the bus admittance matrix of synchronous machines, and the influence of wind farm on power angle was transformed into the influence of electrical distances between synchronous machines which refer to the self and mutual admittances. The change of each synchronous machine's electromagnetic power was derived by using the nodal power equation. The influence of wind on the mutual synchronization and transient angle stability of system was analyzed, overcoming the difficulties of quantifying the transient stability. A three-machine nine-bus system with DFIG was used to calculate the changes of synchronous machine nodes' self and mutual admittances. By simulating and comparing the transient stability of the system under two different DFIG low voltage ride through schemes in case of short circuit fault, validity of the method is verified.关键词
双馈风力发电机/多机系统/暂态稳定性/低电压穿越/节点导纳矩阵Key words
doubly-fed induction generator(DFIG)/multi-machine system/transient stability/low voltage ride through/bus admittance matrix分类
信息技术与安全科学引用本文复制引用
姜惠兰,吴玉璋,周照清,李天鹏..含双馈风力发电场的多机系统暂态 功角稳定性分析方法[J].中国电机工程学报,2018,38(4):999-1005,后插4,8.基金项目
国家自然科学基金项目(51477115). Project Supported by National Natural Science Foundation of China (51477115). （51477115）
