电压互感器试验用全自动工频谐振升压装置研究
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摘要
在220 k V电压互感器的现场误差试验中,通常存在着调谐升压效率偏低、试验电源容量要求高等问题。基于电压电感多阶导数和功率因数判断的优化算法、开口铁心双向调节改进设计,研究设计了全自动工频谐振升压装置,实现了对220 k V电压互感器一次回路的工频全自动谐振升压。现场应用表明,该装置可自动在工频条件下动态调节电感量,准确寻找谐振点实现升压,同时比现有设备更加轻便,满足现场人员组合搬运要求,提高试验效率和安全水平。
During the onsite error test on 220 kV voltage transformer,there are problems such as unreliability of tuning boost,low Q factor and high requirement for the test power capacity. In this paper,a fully automatic power frequency resonant boost device is designed to realize the power frequency voltage resonant boosting for the 220 k V voltage transformer primary circuit by using the optimization algorithm based on multi-order derivative and power factor judgment,and the two-way automatic adjustment of open iron core. The field applications show that the inductance can be dynamically adjusted in power frequency by the device,which could accurately find the resonant point and boost voltage automatically. On the other hand,the device which is less bulky and easier to be established and carried,can improve the efficiency and safety level.
During the onsite error test on 220 kV voltage transformer,there are problems such as unreliability of tuning boost,low Q factor and high requirement for the test power capacity. In this paper,a fully automatic power frequency resonant boost device is designed to realize the power frequency voltage resonant boosting for the 220 k V voltage transformer primary circuit by using the optimization algorithm based on multi-order derivative and power factor judgment,and the two-way automatic adjustment of open iron core. The field applications show that the inductance can be dynamically adjusted in power frequency by the device,which could accurately find the resonant point and boost voltage automatically. On the other hand,the device which is less bulky and easier to be established and carried,can improve the efficiency and safety level.
引文
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[8]徐敏锐,黄奇峰,卢树峰,等. GIS内电压互感器现场误差智能化校验系统设计与实现[J].电测与仪表,2014,51(8):15-18.
[9]孙冲,杨鹏,王永辉,等. GIS中电压互感器变频谐振升压自动测试方法[J].河北电力技术,2017,36(1):5-7.
[10]焦阳,黄嘉鹏,史强,等. 550 k V超长距离GIS电压互感器现场校验用工频谐振升压电源研究[J].电测与仪表,2016,53(4):74-78.
[11]樊斌,鲍清华,刘晓庄,等.串联谐振试验自动升压过程中的PID控制[J].仪表技术与传感器,2010(9):88-89.
[2]赵亮,张建军,梁东.干式带气隙铁心电抗器电感计算方法[J].高压电器,2012,48(6):61-64.
[3]龚禔.一般情况下两共轴圆线圈间互感系数的简便计算[J].大学物理,2011,30(4):46-48.
[4]李永清.串联互感线圈的等效自感系数[J].辽宁师专学报:自然科学版,2002,4(2):23-25.
[5]林鑫,严向坤,黄璀豪,等.可调感谐振升压在电压互感器误差测试中的应用[J].广东科技,2018,27(3):58-60.
[6]李振东,曹建安,余顺花.一种电容式电压互感器现场试验方法的研究[J].青海电力,2014,33(2):18-22.
[7]靳绍平.利用GIS母线寄生电容串联电抗器的谐振升压法[J].电测与仪表,2005,42(5):27-28.
[8]徐敏锐,黄奇峰,卢树峰,等. GIS内电压互感器现场误差智能化校验系统设计与实现[J].电测与仪表,2014,51(8):15-18.
[9]孙冲,杨鹏,王永辉,等. GIS中电压互感器变频谐振升压自动测试方法[J].河北电力技术,2017,36(1):5-7.
[10]焦阳,黄嘉鹏,史强,等. 550 k V超长距离GIS电压互感器现场校验用工频谐振升压电源研究[J].电测与仪表,2016,53(4):74-78.
[11]樊斌,鲍清华,刘晓庄,等.串联谐振试验自动升压过程中的PID控制[J].仪表技术与传感器,2010(9):88-89.