基于PSCAD-ANSYS的变压器绕组振动特性仿真研究

发布时间：2018-01-24 15:23

本文关键词： 变压器绕组突发短路振动响应联合仿真 PSCAD ANSYS　出处：《电工电能新技术》2017年11期 　论文类型：期刊论文

【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。
[Abstract]:In order to further understand and master the vibration characteristics of transformer windings under short circuit impact, this paper realizes the whole process analysis of transformer vibration response under sudden short circuit based on PSCAD-ANSYS simulation. According to the short circuit current of transformer windings calculated by PSCAD software, the electric force and vibration response of transformer windings are calculated by using electromagnetic field and mechanical field module in ANSYS software. The exchange of key information such as current and time between the two software is realized by means of data communication interface. Taking a 110kV substation as an example, the vibration response of transformer under sudden short circuit is calculated and analyzed. The results show that the proposed joint simulation method can effectively calculate the vibration characteristics of transformer windings during sudden short circuit. The winding vibration first reaches the maximum value after the short circuit fault occurs, then accompanied by a certain attenuation component, and the frequency spectrum component of the vibration signal is more abundant.
【作者单位】：广东电网公司电力科学研究院;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;
【基金】：国家自然科学基金项目(51207090) 南方电网科技项目(K-GD2014-170)
【分类号】：TM41
【正文快照】： 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)1引言变压器是电力系统中的关键设备之一,其运行可靠性与稳定性直接关系到电力系统的安全运行。据统计表明[1],因突发短路引发的绕组变形问题是变压器故障的主要原因。突发短路时,变压器振动主要由绕组振动

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