考虑带泵类负载感应电动机影响的静态电压稳定性分析
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摘要
为了更准确计及泵类负载机械特性对配电网静态电压稳定的影响,建立了一种将感应电动机T型等效电路与泵类负载机械特性相结合的感应电动机负荷模型。将其用于配电网潮流计算,采用前推回代法求解。进而将其用于连续潮流计算,建立了带泵类负载多台相同感应电动机的等效负荷模型,分析负荷连续增长对配电网静态电压稳定的影响。采用IEEE33节点算例对提出的模型与方法进行仿真验证,并与负荷按恒功率因数增加模型的连续潮流进行了对比。仿真计算验证了所提方法的合理性和有效性,表明采用该模型所得的静态电压稳定裕度要小于采用恒功率因数负荷计算结果,更接近工程实际情况。
In order to consider the influences of induction motors with pump loads on the static voltage stability of distribution networks more accurately, a load model of an induction motor is established, which combines the T-type equivalent circuit of induction motors with the mechanical characteristics of pump loads. The model is incorporated into the power flow computation of distribution networks, then the back/forward sweep method is used to solve the power flow. Furthermore, the proposed load model is adapted for Continuation Power Flow(CPF), and an equivalent load model of a number of identical induction motors with pump loads is deduced, the load model is used to analyze the effect of continuous load growth on the static voltage stability of the distribution networks. IEEE 33-bus test system is used to verify the proposed model and method, and the results are compared with the ones acquired with the CPF method with constant power factor load mode. The simulations verify the validity and effectiveness of the proposed method, and show that the static voltage stability margin with the load model proposed in this paper is less than that with the constant power factor load model, the proposed load model is more approximate to actual engineering conditions.
In order to consider the influences of induction motors with pump loads on the static voltage stability of distribution networks more accurately, a load model of an induction motor is established, which combines the T-type equivalent circuit of induction motors with the mechanical characteristics of pump loads. The model is incorporated into the power flow computation of distribution networks, then the back/forward sweep method is used to solve the power flow. Furthermore, the proposed load model is adapted for Continuation Power Flow(CPF), and an equivalent load model of a number of identical induction motors with pump loads is deduced, the load model is used to analyze the effect of continuous load growth on the static voltage stability of the distribution networks. IEEE 33-bus test system is used to verify the proposed model and method, and the results are compared with the ones acquired with the CPF method with constant power factor load mode. The simulations verify the validity and effectiveness of the proposed method, and show that the static voltage stability margin with the load model proposed in this paper is less than that with the constant power factor load model, the proposed load model is more approximate to actual engineering conditions.
引文
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[7]朱永强,刘光晔,廖庭坚,等.计及负荷电压静态特性的电力系统最小负荷裕度的快速评估[J].电力系统保护与控制,2016,44(6):23-28.ZHU Yongqiang,LIU Guangye,LIAO Tingjian,et al.Rapid assessment of power system minimum load margin considering load voltage static characteristics[J].Power System Protection and Control,2016,44(6):23-28.
[8]ZHANG Baohui,HAO Zhiguo,BO Zhiqian,et al.New development in relay protection for smart grid[J].Protection and Control of Modern Power Systems,2016,1(1):121-127.DOI:10.1186/s41601-016-0025-x.
[9]张玮亚,王紫钰.智能配电系统分区电压控制技术研究综述[J].电力系统保护与控制,2017,45(1):146-154.ZHANG Weiya,WANG Ziyu.Review of zonal-voltage control techniques of smart distribution system[J].Power System Protection and Control,2017,45(1):146-154.
[10]薛晗光,刘聪睿,赵轩,等.智能电站工作票移动办理的设计与实现[J].热力发电,2017,46(12):40-43.XUE Hanguang,LIU Congrui,ZHAO Xuan,et al.Design and implementation of work order mobile management:practice of intelligent power plant[J].Thermal Power Generation,2017,46(12):40-43.
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[13]马汀山,茅义军,何胜,等.超超临界二次再热机组给水泵小汽轮机优化选型[J].热力发电,2017,46(8):127-130.MA Tingshan,MAO Yijun,HE Sheng,et al.Optimized selection of feedwater pump turbine for ultra-supercritical double-reheat unit[J].Thermal Power Generation,2017,46(8):127-130.
[14]郑欣,陈文炜,林舜江,等.考虑泵类负荷特性的低压配电网潮流计算[J].电力系统保护与控制,2014,42(20):25-31.ZHENG Xin,CHEN Wenwei,LIN Shunjiang,et al.Power flow calculation of low voltage distribution network including pump loads[J].Power System Protection and Control,2014,42(20):25-31.
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[17]周双喜.电力系统电压稳定性及其控制[M].北京:中国电力出版社,2004.
[18]刘天琪,邱晓燕,李华强.现代电力系统分析理论与方法[M].北京:中国电力出版社,2007.
[19]周杨珺,高立克,欧阳健娜.基于改进微分进化算法的配电网故障定位计算分析方法[J].智慧电力,2017,45(10):56-60.ZHOU Yangjun,GAO Like,OUYANG Jianna.Calculation and analysis method for distribution network fault location based on improved differential evolution algorithm[J].Smart Power,2017,45(10):56-60.
[20]孙健,江道灼,刘志华.基于前推回代的配电网潮流改进算法[J].电力自动化设备,2004,24(3):81-84.SUN Jian,JIANG Daozhuo,LIU Zhihua.Modified power flow algorithm of distribution network based on forward/backward sweep method[J].Electric Power Automation Equipment,2004,24(3):81-84.
[21]冷华,童莹,李欣然,等.配电网运行状态综合评估方法研究[J].电力系统保护与控制,2017,45(1):53-59.LENG Hua,TONG Ying,LI Xinran,et al.Comprehensive evaluation method research of the operation state in distributed network[J].Power System Protection and Control,2017,45(1):53-59.
[22]刘国威,孙秋野,张化光.配电系统非恒功率负荷潮流计算方法[J].中国电机工程学报,2008,28(16):22-27.LIU Guowei,SUN Qiuye,ZHANG Huaguang.Unconstant power load model flow calculation in distribution system[J].Proceedings of the CSEE,2008,28(16):22-27.
[23]林城,袁峥,李桂源,等.基于系统静态调节特性的故障后潮流计算[J].智慧电力,2017,45(12):50-54.LIN Cheng,YUAN Zheng,LI Guiyuan.Post-fault power flow calculation based on system static characteristics Unconstant[J].Smart Power,2017,45(12):50-54.
[24]张曦,张宁,龙飞,等.分布式电源接入配网对其静态电压稳定性影响多角度研究[J].电力系统保护与控制,2017,45(6):120-125.ZHANG Xi,ZHANG Ning,LONG Fei,et al.Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects[J].Power System Protection and Control,2017,45(6):120-125.
[25]孙华东,周孝信,李若梅.计及感应电动机负荷的静态电压稳定性分析[J].中国电机工程学报,2005,25(24):1-7.SUN Huadong,ZHOU Xiaoxin,LI Ruomei.Static voltage stability analysis considering induction motor loads[J].Proceedings of the CSEE,2005,25(24):1-7.
[26]AMAN M M,JASMON G B,BAKAR A H A,et al.Anew approach for optimum simultaneous multi-DGdistributed generation units placement and sizing based on maximization of system load ability using HPSO(hybrid particle swarm optimization)algorithm[J].Energy,2014,66(4):202-215.
[27]丁明,郭学凤.含多种分布式电源的弱环配电网三相潮流计算[J].中国电机工程学报,2009,29(13):35-40.DING Ming,GUO Xuefeng.Three-phase power flow for the weakly meshed distribution network with the distributed generation[J].Proceedings of the CSEE,2009,29(13):35-40.
[28]王艳松,孙桂龙,曹明志.基于动态规划法的配电网联络线优化规划研究[J].电力系统保护与控制,2016,44(10):30-36.WANG Yansong,SUN Guilong,CAO Mingzhi.Research on the optimization of the tie lines based on dynamic programming for distribution network[J].Power System Protection and Control,2016,44(10):30-36.
[2]周雪松,侯明,马幼捷,等.不同负荷模型在电压稳定分析中的分岔研究[J].天津理工大学学报,2008,24(2):70-72.ZHOU Xuesong,HOU Ming,MA Youjie,et al.Bifurcation research about different load model used in voltage stability[J].Journal of Tianjin University of Technology,2008,24(2):70-72.
[3]汤涌,林伟芳,孙华东,等.考虑负荷变化特性的电压稳定判据分析[J].中国电机工程学报,2010,30(16):12-18.TANG Yong,LIN Weifang,SUN Huadong,et al.Analysis of voltage stability criterion considering load characteristics[J].Proceedings of the CSEE,2010,30(16):12-18.
[4]李欣然,贺仁睦,章健,等.负荷特性对电力系统静态电压稳定性的影响及静态电压稳定性广义实用判据[J].中国电机工程学报,1999,19(4):26-30.LI Xinran,HE Renmu,ZHANG Jian,et al.Effect of load characteristics on power system stead-state voltage stability and the practical criterion of voltage stability[J].Proceedings of the CSEE,1999,19(4):26-30.
[5]杜正春,周佃民,董继民.考虑负荷电压静特性的最佳乘子牛顿潮流算法[J].中国电机工程学报,2002,22(1):102-105.DU Zhengchun,ZHOU Dianmin,DONG Jimin.Optimal multiplier Newton method of load flow with static load characteristics[J].Proceedings of the CSEE,2002,22(1):102-105.
[6]周家南,苏宏升.计及负荷电压静特性的含分布式电源的前推回代潮流计算[J].电力系统保护与控制,2015,43(24):26-32.ZHOU Jianan,SU Hongsheng.Back/forward sweep power flow calculation with distributed generation considering static load characteristics[J].Power System Protection and Control,2015,43(24):26-32.
[7]朱永强,刘光晔,廖庭坚,等.计及负荷电压静态特性的电力系统最小负荷裕度的快速评估[J].电力系统保护与控制,2016,44(6):23-28.ZHU Yongqiang,LIU Guangye,LIAO Tingjian,et al.Rapid assessment of power system minimum load margin considering load voltage static characteristics[J].Power System Protection and Control,2016,44(6):23-28.
[8]ZHANG Baohui,HAO Zhiguo,BO Zhiqian,et al.New development in relay protection for smart grid[J].Protection and Control of Modern Power Systems,2016,1(1):121-127.DOI:10.1186/s41601-016-0025-x.
[9]张玮亚,王紫钰.智能配电系统分区电压控制技术研究综述[J].电力系统保护与控制,2017,45(1):146-154.ZHANG Weiya,WANG Ziyu.Review of zonal-voltage control techniques of smart distribution system[J].Power System Protection and Control,2017,45(1):146-154.
[10]薛晗光,刘聪睿,赵轩,等.智能电站工作票移动办理的设计与实现[J].热力发电,2017,46(12):40-43.XUE Hanguang,LIU Congrui,ZHAO Xuan,et al.Design and implementation of work order mobile management:practice of intelligent power plant[J].Thermal Power Generation,2017,46(12):40-43.
[11]LI S H,CHIANG H D,LIU S.Analysis of composite load models on load margin of voltage stability[C]//2006IEEE International Conference on Power System Technology,October 22-26,2006,Chongqing,China:1-7.
[12]赵勇.感应电动机负荷模型的静态特性分析[J].电力系统及其自动化学报,2010,22(2):86-92.ZHAO Yong.Analysis on static characteristics of induction motor models[J].Proceedings of the CSU-EPSA,2010,22(2):86-92.
[13]马汀山,茅义军,何胜,等.超超临界二次再热机组给水泵小汽轮机优化选型[J].热力发电,2017,46(8):127-130.MA Tingshan,MAO Yijun,HE Sheng,et al.Optimized selection of feedwater pump turbine for ultra-supercritical double-reheat unit[J].Thermal Power Generation,2017,46(8):127-130.
[14]郑欣,陈文炜,林舜江,等.考虑泵类负荷特性的低压配电网潮流计算[J].电力系统保护与控制,2014,42(20):25-31.ZHENG Xin,CHEN Wenwei,LIN Shunjiang,et al.Power flow calculation of low voltage distribution network including pump loads[J].Power System Protection and Control,2014,42(20):25-31.
[15]刘慧娟,范瑜.电机学[M].北京:机械工业出版社,2014.
[16]陈白宁,段智敏.机电传动控制[M].沈阳:东北大学出版社,2015.
[17]周双喜.电力系统电压稳定性及其控制[M].北京:中国电力出版社,2004.
[18]刘天琪,邱晓燕,李华强.现代电力系统分析理论与方法[M].北京:中国电力出版社,2007.
[19]周杨珺,高立克,欧阳健娜.基于改进微分进化算法的配电网故障定位计算分析方法[J].智慧电力,2017,45(10):56-60.ZHOU Yangjun,GAO Like,OUYANG Jianna.Calculation and analysis method for distribution network fault location based on improved differential evolution algorithm[J].Smart Power,2017,45(10):56-60.
[20]孙健,江道灼,刘志华.基于前推回代的配电网潮流改进算法[J].电力自动化设备,2004,24(3):81-84.SUN Jian,JIANG Daozhuo,LIU Zhihua.Modified power flow algorithm of distribution network based on forward/backward sweep method[J].Electric Power Automation Equipment,2004,24(3):81-84.
[21]冷华,童莹,李欣然,等.配电网运行状态综合评估方法研究[J].电力系统保护与控制,2017,45(1):53-59.LENG Hua,TONG Ying,LI Xinran,et al.Comprehensive evaluation method research of the operation state in distributed network[J].Power System Protection and Control,2017,45(1):53-59.
[22]刘国威,孙秋野,张化光.配电系统非恒功率负荷潮流计算方法[J].中国电机工程学报,2008,28(16):22-27.LIU Guowei,SUN Qiuye,ZHANG Huaguang.Unconstant power load model flow calculation in distribution system[J].Proceedings of the CSEE,2008,28(16):22-27.
[23]林城,袁峥,李桂源,等.基于系统静态调节特性的故障后潮流计算[J].智慧电力,2017,45(12):50-54.LIN Cheng,YUAN Zheng,LI Guiyuan.Post-fault power flow calculation based on system static characteristics Unconstant[J].Smart Power,2017,45(12):50-54.
[24]张曦,张宁,龙飞,等.分布式电源接入配网对其静态电压稳定性影响多角度研究[J].电力系统保护与控制,2017,45(6):120-125.ZHANG Xi,ZHANG Ning,LONG Fei,et al.Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects[J].Power System Protection and Control,2017,45(6):120-125.
[25]孙华东,周孝信,李若梅.计及感应电动机负荷的静态电压稳定性分析[J].中国电机工程学报,2005,25(24):1-7.SUN Huadong,ZHOU Xiaoxin,LI Ruomei.Static voltage stability analysis considering induction motor loads[J].Proceedings of the CSEE,2005,25(24):1-7.
[26]AMAN M M,JASMON G B,BAKAR A H A,et al.Anew approach for optimum simultaneous multi-DGdistributed generation units placement and sizing based on maximization of system load ability using HPSO(hybrid particle swarm optimization)algorithm[J].Energy,2014,66(4):202-215.
[27]丁明,郭学凤.含多种分布式电源的弱环配电网三相潮流计算[J].中国电机工程学报,2009,29(13):35-40.DING Ming,GUO Xuefeng.Three-phase power flow for the weakly meshed distribution network with the distributed generation[J].Proceedings of the CSEE,2009,29(13):35-40.
[28]王艳松,孙桂龙,曹明志.基于动态规划法的配电网联络线优化规划研究[J].电力系统保护与控制,2016,44(10):30-36.WANG Yansong,SUN Guilong,CAO Mingzhi.Research on the optimization of the tie lines based on dynamic programming for distribution network[J].Power System Protection and Control,2016,44(10):30-36.
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