异步联网后的云南电网中PSS2B增益改进
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摘要
目前云南电网部分机组存在双输入型电力系统稳定器(PSS2B)高频段增益限制中低频段增益的问题,提出新型的PSS2B(New-PSS2B),目的是增大中低频段的增益,并减少高频段对中低频段增益的限制。在PSASP用户自定义模型(UDM)中搭建New-PSS2B自定义模型,通过研究分析改进前后PSS2B模型的增益,发现采用New-PSS2B有效提高了中低频段增益。基于PSASP仿真软件,在单机无穷大系统中调用NewPSS2B模块,通过仿真验证了New-PSS2B在中低频段各个频率点抑制低频振荡的效果都优于原有的PSS2B,说明了New-PSS2B具有在全频段都能提供合适阻尼的能力,也能满足电网抑制低频振荡的要求。
Currently,some units in Yunnan Power Grid have the problem that the high frequency gain of PSS2B(dualinput Power System Stabilizer) restricts the gain of the middle and low frequency band. A New-PSS2B(New structure of PSS2B) is proposed to increase the gain of middle and low frequency band and reduce the restriction of high frequency band on the gain of medium and low frequency band. New-PSS2B user-defined model is built in PSASP UDM(User-Defined Model). It can be found that the New-PSS2B can effectively improve the medium and low frequency gain by analyzing the gain of PSS2B and New-PSS2B model. Finally,the New-PSS2B model is implemented to single-machine infinite system on PSASP. Simulative results verify that the New-PSS2B is superior to the existing PSS2B in terms of suppressing low-frequency oscillation at each frequency point in both medium and low frequency band. These results indicate that the New-PSS2B provides sufficient damping in the whole frequency band and satisfies the requirements of low frequency oscillation suppression in power grid.
Currently,some units in Yunnan Power Grid have the problem that the high frequency gain of PSS2B(dualinput Power System Stabilizer) restricts the gain of the middle and low frequency band. A New-PSS2B(New structure of PSS2B) is proposed to increase the gain of middle and low frequency band and reduce the restriction of high frequency band on the gain of medium and low frequency band. New-PSS2B user-defined model is built in PSASP UDM(User-Defined Model). It can be found that the New-PSS2B can effectively improve the medium and low frequency gain by analyzing the gain of PSS2B and New-PSS2B model. Finally,the New-PSS2B model is implemented to single-machine infinite system on PSASP. Simulative results verify that the New-PSS2B is superior to the existing PSS2B in terms of suppressing low-frequency oscillation at each frequency point in both medium and low frequency band. These results indicate that the New-PSS2B provides sufficient damping in the whole frequency band and satisfies the requirements of low frequency oscillation suppression in power grid.
引文
[1]蔡葆锐,王兴刚,司大军.异步联网对云南电网安全稳定性的影响[J].云南电力技术,2015,43(1):83-86.CAI Baorui,WANG Xinggang,SI Dajun. Impact of asynchronous networking for Yunnan Power Grid security and stability[J]. Yunnan Electric Power,2015,43(1):83-86.
[2]张东辉,洪潮,周保荣,等.云南电网与南方电网主网异步联网系统方案研究[J].南方电网技术,2014,8(6):1-6.ZHANG Donghui,HONG Chao,ZHOU Baorong,et al. Asynchronous interconnection system scheme for Yunnan Power Grid and the main grid of China Southern Power Grid[J]. Southern Power System Technology,2014,8(6):1-6.
[3]李勇,刘子全,奚江惠,等.一种可用于监测调速系统对低频振荡影响的方法[J].电力自动化设备,2016,36(3):142-148.LI Yong,LIU Ziquan,XI Jianghui,et al. Way to identify influence of governor system on low frequency oscillation[J]. Electric Power Automation Equipment,2016,36(3):142-148.
[4]董久晨,王西田,刘明行,等.自并励静止励磁系统精细建模及仿真[J].电力自动化设备,2016,36(5):112-115,126.DONG Jiuchen,WANG Xitian,LIU Mingxing,et al. Precise model of bus-fed static excitation system and simulation[J]. Electric Power Automation Equipment,2016,36(5):112-115,126.
[5]吴跨宇,竺士章.发电机励磁系统调差对PSS参数整定的影响与对策[J].电力自动化设备,2010,30(9):67-71.WU Kuayu,ZHU Shizhang. Effect of reactive compensation for generator excitation system on PSS parameter setting and solution[J].Electric Power Automation Equipment,2010,30(9):67-71.
[6]毛晓明,蔡永智,赵勇.基于机组实测相频特性的PSS参数整定[J].电力自动化设备,2011,31(10):56-60.MAO Xiaoming,CAI Yongzhi,ZHAO Yong. PSS parameter tuning based on phase characteristics of site measurements[J]. Electric Power Automation Equipment,2011,31(10):56-60.
[7]霍承祥,刘增煌,朱方.运用电力系统稳定器对励磁系统进行相位补偿的理论与实践[J].中国电机工程学报,2015,35(12):2989-2997.HUO Chengxiang,LIU Zenghuang,ZHU Fang. Theory and field prac-tice of phase compensation on generator excitation system by utilizing power system stabilizer[J]. Proceedings of the CSEE,2015,35(12):2989-2997.
[8]康健,丁凯.加速功率型电力系统稳定器输入变量的获取[J].电力系统自动化,2008,32(11):87-88.KANG Jian,DING Kai. Discussion on input state variables of an improved rotational speed power system stabilizer[J]. Automation of Electric Power Systems,2008,32(11):87-88.
[9]KAMWA I,GRONDIN R,TRUDEL G. IEEE PSS2B versus PSS4B:the limits of performance of modern power system stabilizers[J].IEEE Transactions on Power Systems,2005,20(2):903-915.
[10]刘英超,王德林,康积涛,等.新型电力系统稳定器PSS4B参数优化整定方法[J].电工技术,2017(5):16-18.
[11] MISHRA S,TRIPATHY M,NANDA J. Multi-machine power system stabilizer design by rule based bacteria foraging[J].Electric Power Systems Research,2007,77(12):1595-1607.
[12]吴跨宇,吴龙,卢岑岑,等.一种改进型PSS4B电力系统稳定器的工程化应用研究[J].电力系统保护与控制,2015,43(14):113-119.WU Kuayu,WU Long,LU Chenchen,et al. Research on engineering application of an improved PSS4B power system stabilizer[J].Power System Protection and Control,2015,43(14):113-119.
[13]唐亮,高赫远,杨潇. PSASP用户自定义程序在励磁系统及PSS建模中的应用研究[J].河北电力技术,2010,29(5):13-15.TANG Liang,GAO Heyuan,YANG Xiao. Application research of PSASP user defined modeling in excitation system and PSS modeling[J]. Hebei Electric Power,2010,29(5):13-15.
[14]WU Z,ZHOU X. Power System Analysis Software Package(PSASP)-an integrated power system analysis tool[C]∥International Conference on Power System Technology. Beijing,China:IEEE,1998:7-11.
[2]张东辉,洪潮,周保荣,等.云南电网与南方电网主网异步联网系统方案研究[J].南方电网技术,2014,8(6):1-6.ZHANG Donghui,HONG Chao,ZHOU Baorong,et al. Asynchronous interconnection system scheme for Yunnan Power Grid and the main grid of China Southern Power Grid[J]. Southern Power System Technology,2014,8(6):1-6.
[3]李勇,刘子全,奚江惠,等.一种可用于监测调速系统对低频振荡影响的方法[J].电力自动化设备,2016,36(3):142-148.LI Yong,LIU Ziquan,XI Jianghui,et al. Way to identify influence of governor system on low frequency oscillation[J]. Electric Power Automation Equipment,2016,36(3):142-148.
[4]董久晨,王西田,刘明行,等.自并励静止励磁系统精细建模及仿真[J].电力自动化设备,2016,36(5):112-115,126.DONG Jiuchen,WANG Xitian,LIU Mingxing,et al. Precise model of bus-fed static excitation system and simulation[J]. Electric Power Automation Equipment,2016,36(5):112-115,126.
[5]吴跨宇,竺士章.发电机励磁系统调差对PSS参数整定的影响与对策[J].电力自动化设备,2010,30(9):67-71.WU Kuayu,ZHU Shizhang. Effect of reactive compensation for generator excitation system on PSS parameter setting and solution[J].Electric Power Automation Equipment,2010,30(9):67-71.
[6]毛晓明,蔡永智,赵勇.基于机组实测相频特性的PSS参数整定[J].电力自动化设备,2011,31(10):56-60.MAO Xiaoming,CAI Yongzhi,ZHAO Yong. PSS parameter tuning based on phase characteristics of site measurements[J]. Electric Power Automation Equipment,2011,31(10):56-60.
[7]霍承祥,刘增煌,朱方.运用电力系统稳定器对励磁系统进行相位补偿的理论与实践[J].中国电机工程学报,2015,35(12):2989-2997.HUO Chengxiang,LIU Zenghuang,ZHU Fang. Theory and field prac-tice of phase compensation on generator excitation system by utilizing power system stabilizer[J]. Proceedings of the CSEE,2015,35(12):2989-2997.
[8]康健,丁凯.加速功率型电力系统稳定器输入变量的获取[J].电力系统自动化,2008,32(11):87-88.KANG Jian,DING Kai. Discussion on input state variables of an improved rotational speed power system stabilizer[J]. Automation of Electric Power Systems,2008,32(11):87-88.
[9]KAMWA I,GRONDIN R,TRUDEL G. IEEE PSS2B versus PSS4B:the limits of performance of modern power system stabilizers[J].IEEE Transactions on Power Systems,2005,20(2):903-915.
[10]刘英超,王德林,康积涛,等.新型电力系统稳定器PSS4B参数优化整定方法[J].电工技术,2017(5):16-18.
[11] MISHRA S,TRIPATHY M,NANDA J. Multi-machine power system stabilizer design by rule based bacteria foraging[J].Electric Power Systems Research,2007,77(12):1595-1607.
[12]吴跨宇,吴龙,卢岑岑,等.一种改进型PSS4B电力系统稳定器的工程化应用研究[J].电力系统保护与控制,2015,43(14):113-119.WU Kuayu,WU Long,LU Chenchen,et al. Research on engineering application of an improved PSS4B power system stabilizer[J].Power System Protection and Control,2015,43(14):113-119.
[13]唐亮,高赫远,杨潇. PSASP用户自定义程序在励磁系统及PSS建模中的应用研究[J].河北电力技术,2010,29(5):13-15.TANG Liang,GAO Heyuan,YANG Xiao. Application research of PSASP user defined modeling in excitation system and PSS modeling[J]. Hebei Electric Power,2010,29(5):13-15.
[14]WU Z,ZHOU X. Power System Analysis Software Package(PSASP)-an integrated power system analysis tool[C]∥International Conference on Power System Technology. Beijing,China:IEEE,1998:7-11.