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基于PSCAD-ANSYS的变压器绕组振动特性仿真研究
引用本文:杨贤,王丰华,何苗忠,林春耀.基于PSCAD-ANSYS的变压器绕组振动特性仿真研究[J].电工电能新技术,2017,36(11).
作者姓名:杨贤  王丰华  何苗忠  林春耀
作者单位:1. 广东电网公司电力科学研究院,广东广州,510080;2. 电力传输与功率变换控制教育部重点实验室,上海交通大学,上海200240
基金项目:国家自然科学基金项目,南方电网科技项目
摘    要:为进一步理解和掌握短路冲击下变压器绕组的振动特性,本文基于PSCAD-ANSYS联合仿真实现了变压器突发短路下振动响应的全过程分析,即根据PSCAD软件计算得到的变压器绕组短路电流,在ANSYS软件中使用电磁场和机械场模块计算了变压器绕组的电动力和振动响应。其中,两个软件之间的电流和时间等关键信息的交换通过数据通信接口方式实现。以某110k V变电站为例对变压器突发短路下的振动响应进行计算分析,结果表明,所提出的联合仿真方法能够有效计算突发短路时变压器绕组的振动特性。突发短路时,变压器振动响应与短路电流变化趋势类似,绕组振动在短路故障发生后先达到最大值,然后伴有一定的衰减分量,振动信号频谱分量更加丰富。

关 键 词:变压器绕组  突发短路  振动响应  联合仿真  PSCAD  ANSYS

Research on simulation of transformer vibration based on PSCAD and ANSYS
YANG Xian,WANG Feng-hua,HE Miao-zhong,LIN Chun-yao.Research on simulation of transformer vibration based on PSCAD and ANSYS[J].Advanced Technology of Electrical Engineering and Energy,2017,36(11).
Authors:YANG Xian  WANG Feng-hua  HE Miao-zhong  LIN Chun-yao
Abstract:To further understand the vibration mechanism of transformer winding,the whole simulation of winding vibration response under short circuit was made based on the co-simulation of PSCAD and ANSYS software.The short-circuit current was obtained based on the electro-magnetic transient analysis of PSCAD software under sudden short-circuit impact.Then the simulation of magnetic field and mechanical field excited by the short circuit current was achieved and the transformer vibration characteristics excited by the electro-dynamic force was acquired.The data communication mechanism has been elegantly designed and implemented to combine the electrical model and vibration model,which makes the co-simulation more intergratded and rigorous.With the developed simulation model,the vibration response of a power transformer in the 110kV substation was calculated and the effectiveness of the proposed simulation method was verified.When sudden short-circuit was occurred,the vibration response of transformer winding was increased greatly and then reduced gradually,which was similar to the variation trend of short-circuit current.The frequency component of vibration signals are more complicated.
Keywords:transformer winding  sudden short-circuit  vibration response  co-simulation  PSCAD  ANSYS
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