调容式消弧线圈自动跟踪补偿系统的研究
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摘要
本文首先针对中性点不接地电网正常运行和发生单相接地故障时的主要特点进行了理论分析,由此进一步介绍了经消弧线圈接地电网的运行特点以及单相接地时消弧线圈的补偿原理。
其次,详细列举了当前相对比较成熟的电网对地电容电流的检测方法,并对这些检测方法的原理、精确度和可行性进行了分析。
在以上研究工作的基础上,本课题研究设计了以单片机为核心具有自动跟踪补偿功能的调容式消弧装置。该装置由扫频信号装置、控制器和调容控制柜组成。它的本体电抗器部分在电感的铁芯上增加一个二次绕组,二次侧绕组上并联有不同容量的电容器组。采用“注入变频信号”的算法来跟踪计算电容电流,计算简单、精度高,而且特别适合调容式消弧线圈自动补偿系统;采用“随调式”的调节方法给,可省去有载多档开关和相对薄弱的阻尼电阻箱,简化了一次设备,降低成本且故障率低。
最后,利用PSCAD/EMTDC软件对中性点经消弧线圈接地系统的各种状态进行仿真,对本文的设计进行了验证,证明了其可行性与可靠性。
Firstly,this article aiming at the conditon and characteristic of Non-grouding network has carried on the therical analysis. From this it draws out normal operation status in arc suppression coil grouding neutral system ,as well as compensation principle of arc suppression coil when single-phase earth.
Secondly,this paper has in detail enumerated the relative mature capacitance curreent examination method of network ,has carried on the principle analysis of the equation development to these examination methods,and has carried on the analysis to their precise degree and the feasibility.
In above fundamental research, this topic successfully developed the auto arc suppression coil with switched capacitors which takes the single-chip as the core.This equipment is composed by signal generator、the controller and the combination control tank. The reactor increases two windings on the inductance core. On secondary windings has the different capacity of capacitors. The method using the“injecting variable frequency“to complete capacitive current is simple to compute, high precision moreover is suitable to arc suppression coil with switched capacitors; Using "following adjustment" can omit the on一load switch and the damping resistance box to simplify the equipment, reduce the cost and reduce the failure rate.
Then author uses PSCAD/EMTDC to simulate all kinds of the conditions of the electric power system with neutral grounding through the arc suppression coil. The practicality experiment was done to validate the reliability of our set to quench grounding current. All of the results of these simulations demonstrate the function of this set.
其次,详细列举了当前相对比较成熟的电网对地电容电流的检测方法,并对这些检测方法的原理、精确度和可行性进行了分析。
在以上研究工作的基础上,本课题研究设计了以单片机为核心具有自动跟踪补偿功能的调容式消弧装置。该装置由扫频信号装置、控制器和调容控制柜组成。它的本体电抗器部分在电感的铁芯上增加一个二次绕组,二次侧绕组上并联有不同容量的电容器组。采用“注入变频信号”的算法来跟踪计算电容电流,计算简单、精度高,而且特别适合调容式消弧线圈自动补偿系统;采用“随调式”的调节方法给,可省去有载多档开关和相对薄弱的阻尼电阻箱,简化了一次设备,降低成本且故障率低。
最后,利用PSCAD/EMTDC软件对中性点经消弧线圈接地系统的各种状态进行仿真,对本文的设计进行了验证,证明了其可行性与可靠性。
Firstly,this article aiming at the conditon and characteristic of Non-grouding network has carried on the therical analysis. From this it draws out normal operation status in arc suppression coil grouding neutral system ,as well as compensation principle of arc suppression coil when single-phase earth.
Secondly,this paper has in detail enumerated the relative mature capacitance curreent examination method of network ,has carried on the principle analysis of the equation development to these examination methods,and has carried on the analysis to their precise degree and the feasibility.
In above fundamental research, this topic successfully developed the auto arc suppression coil with switched capacitors which takes the single-chip as the core.This equipment is composed by signal generator、the controller and the combination control tank. The reactor increases two windings on the inductance core. On secondary windings has the different capacity of capacitors. The method using the“injecting variable frequency“to complete capacitive current is simple to compute, high precision moreover is suitable to arc suppression coil with switched capacitors; Using "following adjustment" can omit the on一load switch and the damping resistance box to simplify the equipment, reduce the cost and reduce the failure rate.
Then author uses PSCAD/EMTDC to simulate all kinds of the conditions of the electric power system with neutral grounding through the arc suppression coil. The practicality experiment was done to validate the reliability of our set to quench grounding current. All of the results of these simulations demonstrate the function of this set.
引文
[1]要焕年,曹梅月.电力系统谐振接地[M].北京:中国电力出版社,2000
[2] 李福寿. 中性点非有效接地电网的运行[M].北京:中国电力出版社,1993
[3] 解广润. 电力系统接地技术[M].北京:水利电力出版时,1991
[4] Caixu.A new arc-suppression coil with magnetic bias and its characteristics analysis[C].Electrical Machines and Systems,2003.ICEMS 2003.Sixth International Conference on Volume 21 Nov.2003.903～906
[5] Zeng Guohui,Zhang Xiubin,Zhang Feng.Study on a New Resonant Grounding System[C].Power Electronics and Motion Control Conference, 2004 IPEMC 2004. The 4th International,Volume 3.2004:1717～1721
[6] Liu Yancun,Fu Chuang. Application of thyristor in auto-tuning arc suppression coils[C].Applied Power Electronics Conference and Exposition, 2005 APEC 2005. Twentieth Annual IEEE Volume 3. 2005:1811～1816
[7] 陈恒,蔡旭,汪军.相控式消弧线圈补偿特性[J].电力系统自动化,2007,31(11):81～86.
[8] Liu Yancun,Lu Tiecheng,Fu Chuang.Automatic Arc Suppression Equipmentwith Fast Response Based on TSC Control Technology[C].The 30th Annual Conference of the IEEE Industrial Electronics Society.Korea:Busan,2004.520~523
[9] Xu Yuqin,Chen Zhiye.The method for automatic compensation and detection of earth faults in distribution network[C] . Power System Technology , POWERCON 2002.International Conference on Volume 3, 13-17.2002,1753~1757.
[10] 江渝,刘和平,冉立等.连续调节消弧线圈接地系统单相接地故障谐振状态在线检测的研究[J].中国电机工程学报,2005,25(13):35～40
[11] Zhang Jianhua,Dai Guanping,Xiao Gang,et.Design of the control system for thyristor switched capacitor devices[J].Transmission and DistributionConference and Exposition 2003 IEEE PES Volume,2003:606 - 610
[12] 邵剑.谐振接地系统电容电流测量方法的研究[D].北京:华北电力大学,2003.13～15
[13] 赵牧函,纪延超.消弧线圈自动调谐原理的研究[J].电力系统及其自动化学报.2002,14(4):50～54
[14] 王新宽, 魏殿杰, 王鑫.新型消弧消谐选线综合装置的研制[J].电气制造. 2005 年第 1 期。
[15] 严干贵,李果雪等基于扫频法电容电流的测量装置研制[J].电力自动化设备.2007,27(3):64～68
[16] Zeng Xiangjun,Li K.K,Chan W.L.,Yin Xianggen.Some Novel Techniques for Improving Power Quality in Distribution Networks[J].2004 IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies :306～310
[17]朱彩虹,李玲玲,杨屹等.补偿电网脱谐度的自动测量系统[J].中国仪器仪表,2001(3):14～15
[18] 李玲玲,高长举,赵久林等.实现补偿电网脱谐度自动调谐的新方法[J].基础自动化,2002,9(2):32～34
[19] 李玲玲,孙鹤旭,王晓宏等.谐振接地电力网自动调谐的新方法[J].中国电机工程学报,2003,23(6):77～80
[20] 陈忠仁,吴维宁,陈家宏.配电网自动跟踪消弧装置的测量跟踪问题[J].电力系统自动化,2004,28(10):84～87
[21] 汤放奇,李景禄,曾祥君等.补偿电网中性点位移电压异常的原因及对策[J].高电压技术,2005,31(4):12～13
[22] 董翠玲,佘艳,陈忠仁.自动补偿消弧装置跟踪测量问题探讨[J].高电压技术,2005,31(4):29-31.
[23] 陈安伟.基于快速调节消弧线圈的新型接地故障保护方法研究[D].重庆:重庆大学,2002.24～29
[24] 褚聪闻,王军.线圈交错排列的曲折形接线接地变压器零序阻抗的计算.高师理科刊,2000,20(2):21～23
[25] 范钧伟.谈曲折接线变压器在城区变电所的应用及本体和配套线圈的设计[J].电气开关,2000,3:18～21
[26] 都洪基,叶婷.基于单片机的新型消弧装置设计[J].电力自动化设备.2005,25(5):74～76
[27] 闫静,马志瀛.自动补偿消弧装置新型测控方法的研究与实现[J].高压电器.2007,43(3):165～168
[28] 常思哲,杨学昌,闫兴中.查表式可控硅投切消弧线圈的研制[J].高电压技术,2004,30(4):11～13
[29] 严干贵,车晓涛等.基于高速 SOC 单片机新型调容式消弧调谐控制器[J].电力自动化设备 2006,26(9):68～71
[30] 胡鸿才,贺贵明.基于 C8051F 的电量测量与传输系统[J] .现代电力电子技术.2006,9:83～85
[31]陈卫兵.从系统结构看 Cygnal C8051 FXXX 系列单片机[M].微电子技术.2003,31(6):40～41
[32] Detjen, E.R,Shah, K.R..Grounding Transformer Applications and Associated Protection Schemes[J].Industry Applications Society Annual Meeting,1990, Conference Record of the 1990 IEEE 7-12 Oct.1990 :1981～1988
[33] 周明宝,瞿文龙.电力电子技术[M] .北京:机械工业出版社,2001
[34] 唐小平,唐恭富,蒋晓辉.基于 C8051F020 控制的液晶显示屏设计[J] .测控技术.2005,24(1):72 ～75
[2] 李福寿. 中性点非有效接地电网的运行[M].北京:中国电力出版社,1993
[3] 解广润. 电力系统接地技术[M].北京:水利电力出版时,1991
[4] Caixu.A new arc-suppression coil with magnetic bias and its characteristics analysis[C].Electrical Machines and Systems,2003.ICEMS 2003.Sixth International Conference on Volume 21 Nov.2003.903～906
[5] Zeng Guohui,Zhang Xiubin,Zhang Feng.Study on a New Resonant Grounding System[C].Power Electronics and Motion Control Conference, 2004 IPEMC 2004. The 4th International,Volume 3.2004:1717～1721
[6] Liu Yancun,Fu Chuang. Application of thyristor in auto-tuning arc suppression coils[C].Applied Power Electronics Conference and Exposition, 2005 APEC 2005. Twentieth Annual IEEE Volume 3. 2005:1811～1816
[7] 陈恒,蔡旭,汪军.相控式消弧线圈补偿特性[J].电力系统自动化,2007,31(11):81～86.
[8] Liu Yancun,Lu Tiecheng,Fu Chuang.Automatic Arc Suppression Equipmentwith Fast Response Based on TSC Control Technology[C].The 30th Annual Conference of the IEEE Industrial Electronics Society.Korea:Busan,2004.520~523
[9] Xu Yuqin,Chen Zhiye.The method for automatic compensation and detection of earth faults in distribution network[C] . Power System Technology , POWERCON 2002.International Conference on Volume 3, 13-17.2002,1753~1757.
[10] 江渝,刘和平,冉立等.连续调节消弧线圈接地系统单相接地故障谐振状态在线检测的研究[J].中国电机工程学报,2005,25(13):35～40
[11] Zhang Jianhua,Dai Guanping,Xiao Gang,et.Design of the control system for thyristor switched capacitor devices[J].Transmission and DistributionConference and Exposition 2003 IEEE PES Volume,2003:606 - 610
[12] 邵剑.谐振接地系统电容电流测量方法的研究[D].北京:华北电力大学,2003.13～15
[13] 赵牧函,纪延超.消弧线圈自动调谐原理的研究[J].电力系统及其自动化学报.2002,14(4):50～54
[14] 王新宽, 魏殿杰, 王鑫.新型消弧消谐选线综合装置的研制[J].电气制造. 2005 年第 1 期。
[15] 严干贵,李果雪等基于扫频法电容电流的测量装置研制[J].电力自动化设备.2007,27(3):64～68
[16] Zeng Xiangjun,Li K.K,Chan W.L.,Yin Xianggen.Some Novel Techniques for Improving Power Quality in Distribution Networks[J].2004 IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies :306～310
[17]朱彩虹,李玲玲,杨屹等.补偿电网脱谐度的自动测量系统[J].中国仪器仪表,2001(3):14～15
[18] 李玲玲,高长举,赵久林等.实现补偿电网脱谐度自动调谐的新方法[J].基础自动化,2002,9(2):32～34
[19] 李玲玲,孙鹤旭,王晓宏等.谐振接地电力网自动调谐的新方法[J].中国电机工程学报,2003,23(6):77～80
[20] 陈忠仁,吴维宁,陈家宏.配电网自动跟踪消弧装置的测量跟踪问题[J].电力系统自动化,2004,28(10):84～87
[21] 汤放奇,李景禄,曾祥君等.补偿电网中性点位移电压异常的原因及对策[J].高电压技术,2005,31(4):12～13
[22] 董翠玲,佘艳,陈忠仁.自动补偿消弧装置跟踪测量问题探讨[J].高电压技术,2005,31(4):29-31.
[23] 陈安伟.基于快速调节消弧线圈的新型接地故障保护方法研究[D].重庆:重庆大学,2002.24～29
[24] 褚聪闻,王军.线圈交错排列的曲折形接线接地变压器零序阻抗的计算.高师理科刊,2000,20(2):21～23
[25] 范钧伟.谈曲折接线变压器在城区变电所的应用及本体和配套线圈的设计[J].电气开关,2000,3:18～21
[26] 都洪基,叶婷.基于单片机的新型消弧装置设计[J].电力自动化设备.2005,25(5):74～76
[27] 闫静,马志瀛.自动补偿消弧装置新型测控方法的研究与实现[J].高压电器.2007,43(3):165～168
[28] 常思哲,杨学昌,闫兴中.查表式可控硅投切消弧线圈的研制[J].高电压技术,2004,30(4):11～13
[29] 严干贵,车晓涛等.基于高速 SOC 单片机新型调容式消弧调谐控制器[J].电力自动化设备 2006,26(9):68～71
[30] 胡鸿才,贺贵明.基于 C8051F 的电量测量与传输系统[J] .现代电力电子技术.2006,9:83～85
[31]陈卫兵.从系统结构看 Cygnal C8051 FXXX 系列单片机[M].微电子技术.2003,31(6):40～41
[32] Detjen, E.R,Shah, K.R..Grounding Transformer Applications and Associated Protection Schemes[J].Industry Applications Society Annual Meeting,1990, Conference Record of the 1990 IEEE 7-12 Oct.1990 :1981～1988
[33] 周明宝,瞿文龙.电力电子技术[M] .北京:机械工业出版社,2001
[34] 唐小平,唐恭富,蒋晓辉.基于 C8051F020 控制的液晶显示屏设计[J] .测控技术.2005,24(1):72 ～75