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中文摘要：
到2010年，南方电网将出现大规模交直流混联的局面，系统的动态特性也将成为关注的焦点。全过程动态仿真是把机电暂态过程、中期过程和长期过程有机地统一的仿真．所考虑的中长期过程中系统元件的动态模型，非常适用于电压稳定问题的研究。基于2010年南方电网基础数据．采用全过程动态仿真软件对云南电网出现严重故障情况下的电压稳定问题进行仿真研究。分析了不同负荷模型及有载调压变压器（0LTC）模型对电压稳定的影响．确定了对电压稳定性影响较大的故障扰动因素。
英文摘要：
A complexion of large scale hybrid AC/DC power transmission system of Southern power grid will appear and a group of dynamic stability problems concerned with it become the focus by the year of 2010. Full process dynamic simulation is such a method in which the electric-mechanical transient, mid- and long term dynamic simulations are organically unified and the feature of this method is to implement dynamic models of power systems in mid- and long term process which is suitable for the study of voltage dynamic stability. Based on the fundamental data of Southern power grid, the voltage dynamic stability under sever fault was simulated and studied by mean of full process dynamic simulation. The influence of different load models and OLTC upon voltage stability was analyzed by the simulation results and the disturbance factors which affect the voltage stability were also determined.
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