自适应涌流抑制技术在高压内置结构高阻抗变压器投切中的应用
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摘要
针对高压内置结构的高阻抗变压器目前尚缺乏有效的励磁涌流抑制技术,导致设备经常报警,严重影响到变压器投运的问题,提出了一种自适应算法的涌流抑制技术。该技术在充分考虑多种外界干扰因素影响的基础上,对合闸时间进行自适应修正补偿,实现变压器合闸时的励磁涌流抑制。在南方电网直流输电工程进行试验的结果,验证了该技术的可行性。
For high-impedance transformer with high voltage built-in structure,there is no effective technology to suppress inrush current,which causes equipment to alarm frequently and seriously affects the operation of transformer.To solve this problem,an adaptive algorithm for inrush suppression is proposed in this paper.On basis of fully considering the influence of various external disturbance factors,the technology carries out self-adaptive correction compensation for closing time to realize the suppression of inrush current when transformer closes.The method is tested the HVDC transmission project in the southern power grid,and the experimental results verify the feasibility of this technology.
For high-impedance transformer with high voltage built-in structure,there is no effective technology to suppress inrush current,which causes equipment to alarm frequently and seriously affects the operation of transformer.To solve this problem,an adaptive algorithm for inrush suppression is proposed in this paper.On basis of fully considering the influence of various external disturbance factors,the technology carries out self-adaptive correction compensation for closing time to realize the suppression of inrush current when transformer closes.The method is tested the HVDC transmission project in the southern power grid,and the experimental results verify the feasibility of this technology.
引文
[1]Vazquez E,Mijares I I,Chacon O L,et al."Transformer Differential Protection Using Principal Component Analysis,"[J]in IEEE Transactions on Power Delivery,2008,25(1):67-72.
[2]Rui Li,et al."A simulation study of the influence of magnetizing inrush current and sympathetic inrush current of converter transformers,"[C]2016IEEE PES Asia-Pacific Power and Energy Engineering Conference(APPEEC),Xi′an,2016,2282-2286.
[3]Wang Y,Abdulsalam S G,Xu W."Analytical Formula to Estimate the Maximum Inrush Current"[J]in IEEE Transactions on Power Delivery,2008,23(2):1266-1268.
[4]Heo J H,Kim S I,Kim J H,et al."Voltage drop calculation considering transformer inrush current with EDG operation"[C].2015 3rd International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST),Busan,2015:455-458.
[5]Zendehdel M H,Sanaye-Pasand M."Development of a data compression index for discrimination between transformer internal faults and inrush currents"[C].2009IEEE Power&Energy Society General Meeting,Calgary,AB,2009:1-7.
[6]Dolgicers A,Kozadajevs J,Zalitis I."Usage of inrush current surge for early detection of inter-winding faults"[C].Proceedings of the 2014 15th International Scientific Conference on Electric Power Engineering(EPE),Brno,2014:457-462.
[7]LU Z,TANG W H,JI T Y,et al."A Morphological Scheme for Inrush Identification in Transformer Protection"[J].IEEE Transactions on Power Delivery,2009,24(2):560-568.
[8]李琥,周海洋,施围.断路器合闸电阻对变压器励磁涌流的影响[J].高压电器,2003,39(1):16-18.
[9]吴佐民,全恒立,杜永红,等.串联合闸电阻的变压器励磁涌流抑制策略研究[J].电气应用,2011(15):56-60.
[10]沃建栋,郑涛,万磊,等.基于合闸控制策略的变压器励磁涌流抑制措施研究[J].电力系统保护与控制,2010,38(22):32-36.
[11]CIGRE Working Group A3.07,"Controlled switching of HVAC circuit breakers:guidance for further applications including unloaded transformer switching,load and fault interruption and circuit-breaker uprating"[C].International Council on Large Electric systems(CIGRE),Paris,2004:765-771.
[12]Jing M,Zengping W,Yan X,et al."A Novel Adaptive Algorithm to Identify Inrush Using Mathematical Morphology"[C].2006IEEE PES Power Systems Conference and Exposition,Atlanta,GA,2006:1020-1028.
[2]Rui Li,et al."A simulation study of the influence of magnetizing inrush current and sympathetic inrush current of converter transformers,"[C]2016IEEE PES Asia-Pacific Power and Energy Engineering Conference(APPEEC),Xi′an,2016,2282-2286.
[3]Wang Y,Abdulsalam S G,Xu W."Analytical Formula to Estimate the Maximum Inrush Current"[J]in IEEE Transactions on Power Delivery,2008,23(2):1266-1268.
[4]Heo J H,Kim S I,Kim J H,et al."Voltage drop calculation considering transformer inrush current with EDG operation"[C].2015 3rd International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST),Busan,2015:455-458.
[5]Zendehdel M H,Sanaye-Pasand M."Development of a data compression index for discrimination between transformer internal faults and inrush currents"[C].2009IEEE Power&Energy Society General Meeting,Calgary,AB,2009:1-7.
[6]Dolgicers A,Kozadajevs J,Zalitis I."Usage of inrush current surge for early detection of inter-winding faults"[C].Proceedings of the 2014 15th International Scientific Conference on Electric Power Engineering(EPE),Brno,2014:457-462.
[7]LU Z,TANG W H,JI T Y,et al."A Morphological Scheme for Inrush Identification in Transformer Protection"[J].IEEE Transactions on Power Delivery,2009,24(2):560-568.
[8]李琥,周海洋,施围.断路器合闸电阻对变压器励磁涌流的影响[J].高压电器,2003,39(1):16-18.
[9]吴佐民,全恒立,杜永红,等.串联合闸电阻的变压器励磁涌流抑制策略研究[J].电气应用,2011(15):56-60.
[10]沃建栋,郑涛,万磊,等.基于合闸控制策略的变压器励磁涌流抑制措施研究[J].电力系统保护与控制,2010,38(22):32-36.
[11]CIGRE Working Group A3.07,"Controlled switching of HVAC circuit breakers:guidance for further applications including unloaded transformer switching,load and fault interruption and circuit-breaker uprating"[C].International Council on Large Electric systems(CIGRE),Paris,2004:765-771.
[12]Jing M,Zengping W,Yan X,et al."A Novel Adaptive Algorithm to Identify Inrush Using Mathematical Morphology"[C].2006IEEE PES Power Systems Conference and Exposition,Atlanta,GA,2006:1020-1028.