温度变化对磁饱和式可控电抗器特性的影响
|
摘要
磁饱和式可控电抗器运行中,损耗或工作环境造成的温度变化会导致其本体结构材料特性变化,从而改变其工作特性.基于磁饱和度计算理论,提出分析温度变化对磁饱和度和工作电流影响的方法.首先,根据磁饱和度的计算公式以及磁饱和度与工作电流之间的关系,分析磁饱和度、工作电流随饱和磁密和绕组电阻变化的趋势;然后,根据材料的温度特性,得到饱和磁通密度和绕组电阻关于温度的表达式;最终获得温度变化对磁饱和度和工作电流影响的基本规律.理论分析和计算结果表明:饱和磁密和绕组电阻随温度变化的趋势相反;并且相同的温度变化对绕组电阻的影响程度较大,同样其对磁饱和度和工作电流的影响程度也不同.因此,在设计计算和运行性能评估中,要充分考虑温度变化的影响.
In the operation of magnetically saturated controllable reactor(MSCR),the change of temperature caused by loss or working environment will lead to the change of material characteristics of its body structure,thus changing its working characteristics.Based on the calculation theory of magnetic saturation degree,a method is proposed to analyze the effect of temperature on magnetic saturation degree and working current.First,according to the formula of magnetic saturation and the relationship between magnetic saturation and working current,the paper analyzes the trend both of magnetic saturation degree and working current changing with saturation flux density or winding resistance.Second,the expressions of saturation flux density and winding resistance with respect to temperature are derived on the basis of the temperature characteristics of the material.Finally,the basic law of the influence of temperature change on magnetic saturation and working current is obtained.The theory and calculation results show that the trend of saturation flux density and winding resistance changing with temperature is opposite,and the influence of same temperature change on winding resistance is greater and similarly its influence on magnetic saturation degree and working current is also different.The effect of temperature variation should be considered in design calculation and operation performance evaluation.
In the operation of magnetically saturated controllable reactor(MSCR),the change of temperature caused by loss or working environment will lead to the change of material characteristics of its body structure,thus changing its working characteristics.Based on the calculation theory of magnetic saturation degree,a method is proposed to analyze the effect of temperature on magnetic saturation degree and working current.First,according to the formula of magnetic saturation and the relationship between magnetic saturation and working current,the paper analyzes the trend both of magnetic saturation degree and working current changing with saturation flux density or winding resistance.Second,the expressions of saturation flux density and winding resistance with respect to temperature are derived on the basis of the temperature characteristics of the material.Finally,the basic law of the influence of temperature change on magnetic saturation and working current is obtained.The theory and calculation results show that the trend of saturation flux density and winding resistance changing with temperature is opposite,and the influence of same temperature change on winding resistance is greater and similarly its influence on magnetic saturation degree and working current is also different.The effect of temperature variation should be considered in design calculation and operation performance evaluation.
引文
[1] 王子强,尹忠东,周丽霞.基于ANSYS的可控电抗器磁路结构与损耗分析[J].电网技术,2010,34(4):168-172.
[2] 谢鹏康,陈恒林,陈国柱.并联磁阀三相六柱式磁阀式可控电抗器磁损特性[J].浙江大学学报(工学版),2015,49(12):2418-2424.
[3] 朱可晴.可控电抗器的附加损耗计算[D].沈阳:沈阳工业大学,2012.
[4] 许晖,尹忠东.新型磁控电抗器的损耗温升分析[J].电力科技,2014(16):154.
[5] 欧振国.磁控电抗器的损耗研究[D].广州:广东工业大学,2014.
[6] 顾生杰,张帆,田铭兴,等.带并联电抗器补偿的长距离输电线路的功率损耗[J].兰州交通大学学报,2014,33(4):12-15.
[7] 石鹏太.磁阀式可控电抗器结构与运行性能关系研究[D].兰州:兰州交通大学,2016.
[8] 陈柏超.新型可控饱和电抗器理论及应用[M].武汉:武汉水利水电大学出版社,1999.
[9] 耿学斌.磁饱和电抗器最小输出电流的确定及最大输出电流的可靠获得[J].变压器,2017,54(3):9-12.
[10] 章宝歌,田铭兴.具有低谐波的三相双级磁控电抗器特性研究[J].兰州交通大学学报,2016,35(4):56-59.
[11] 尹忠东.磁阀式可控电抗器的理论研究及应用[D].武汉:武汉水利电力大学,1997.
[12] 田铭兴,杨雪凇,顾生杰,等.基于MATLAB的磁饱和式可控电抗器的仿真模型参数及过渡时间分析[J].电力自动化设备,2013,33(6):47-51.
[13] 马西奎.电磁场理论及应用[M].西安:西安交通大学出版社,2000.
[14] 李超,徐启峰.J-A模型误差修正和温度特性仿真[J].电工技术学报,2014,29(9):232-238.
[15] LADIMI A,MEKIDECHE M.Modeling of thermal effects on magnetic hysteresis using the Jiles-Atherton model[J].Przeglad Elektrotechniczny,2012,88(4):253-256.
[16] 中国国家标准化管理委员会.电缆的导体:GB/T 3956-2008[S].北京:中国标准出版社,2009.
[17] 曾铁.硅钢片的若干问题[J].职大学报,2012(4):65-68.
[18] 武卫革,刘涛,范亚娜,等.温度对取向硅钢磁性能的影响[J].黑龙江电力,2015,7(2):172-174.
[2] 谢鹏康,陈恒林,陈国柱.并联磁阀三相六柱式磁阀式可控电抗器磁损特性[J].浙江大学学报(工学版),2015,49(12):2418-2424.
[3] 朱可晴.可控电抗器的附加损耗计算[D].沈阳:沈阳工业大学,2012.
[4] 许晖,尹忠东.新型磁控电抗器的损耗温升分析[J].电力科技,2014(16):154.
[5] 欧振国.磁控电抗器的损耗研究[D].广州:广东工业大学,2014.
[6] 顾生杰,张帆,田铭兴,等.带并联电抗器补偿的长距离输电线路的功率损耗[J].兰州交通大学学报,2014,33(4):12-15.
[7] 石鹏太.磁阀式可控电抗器结构与运行性能关系研究[D].兰州:兰州交通大学,2016.
[8] 陈柏超.新型可控饱和电抗器理论及应用[M].武汉:武汉水利水电大学出版社,1999.
[9] 耿学斌.磁饱和电抗器最小输出电流的确定及最大输出电流的可靠获得[J].变压器,2017,54(3):9-12.
[10] 章宝歌,田铭兴.具有低谐波的三相双级磁控电抗器特性研究[J].兰州交通大学学报,2016,35(4):56-59.
[11] 尹忠东.磁阀式可控电抗器的理论研究及应用[D].武汉:武汉水利电力大学,1997.
[12] 田铭兴,杨雪凇,顾生杰,等.基于MATLAB的磁饱和式可控电抗器的仿真模型参数及过渡时间分析[J].电力自动化设备,2013,33(6):47-51.
[13] 马西奎.电磁场理论及应用[M].西安:西安交通大学出版社,2000.
[14] 李超,徐启峰.J-A模型误差修正和温度特性仿真[J].电工技术学报,2014,29(9):232-238.
[15] LADIMI A,MEKIDECHE M.Modeling of thermal effects on magnetic hysteresis using the Jiles-Atherton model[J].Przeglad Elektrotechniczny,2012,88(4):253-256.
[16] 中国国家标准化管理委员会.电缆的导体:GB/T 3956-2008[S].北京:中国标准出版社,2009.
[17] 曾铁.硅钢片的若干问题[J].职大学报,2012(4):65-68.
[18] 武卫革,刘涛,范亚娜,等.温度对取向硅钢磁性能的影响[J].黑龙江电力,2015,7(2):172-174.