基于ETAP的光伏电站并网的谐波分析
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摘要
由于光伏电站接入电网数量的增多,对电力系统的影响也随之增大,成为电网谐波的主要来源之一。首先介绍了谐波来源、危害,然后针对系统内谐波的主要来源-光伏电站进行分析,合理地在ETAP中建立其数学模型,验证能否真实反映真实系统的谐波情况。最后在ETAP模型并仿真进行模型校验,通过与实测值的比较,验证了所采用模型的正确性。
As the number of photovoltaic(PV)power stations connected to the grid increasing,the impact on the power system also increases. PV becomes one of the main sources of power grid harmonics. First of all,the sources and harms of harmonicsare introduced. Then,photovoltaic power station which is the main source of hamonic in the system is analyzed and the mathematical model is established reasonably in power system analysis software(ETAP)to verify whether it can reflect the harmonic of real system. Finally,in ETAP,a complete simulation model of power system is built according to a regional high-voltage grid system. Themeasured data is input into the model and the model is verified by simulation. The correctness of the model is verified by comparingwith the measured values.
As the number of photovoltaic(PV)power stations connected to the grid increasing,the impact on the power system also increases. PV becomes one of the main sources of power grid harmonics. First of all,the sources and harms of harmonicsare introduced. Then,photovoltaic power station which is the main source of hamonic in the system is analyzed and the mathematical model is established reasonably in power system analysis software(ETAP)to verify whether it can reflect the harmonic of real system. Finally,in ETAP,a complete simulation model of power system is built according to a regional high-voltage grid system. Themeasured data is input into the model and the model is verified by simulation. The correctness of the model is verified by comparingwith the measured values.
引文
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[14]孙巍巍,曾江,俞家良.谐波国标中95%概率值评价方式的探讨[J].电力系统保护与控制,2012,40(18):7-11.SUN Weiwei,ZENG Jiang,YU Jialiang. Research on theevalution mode of 95%probability value in the nationalstandard GB/T 14549-93[J]. Power System Protectionand Control,2012,40(18):7-11.
[15]常帅,郭昆丽,王建波.电气化铁路谐波对地区电网的影响西[J].西安工程学报,2016,30(3):327-332.CHANG Shuai,GUO Kunli,WANG Jianbo. The influence of electrified railway harmonics on regional powergrid[J]. Journal of Xi'an Polytechnic University,2016,30(3):327-332.
[16]丁换换,刘毅力,田华明,等.高压电力系统的建模及仿真分析[J].国外电子测量技术,2017,36(12):32-35.DING Huanhuan,LIU Yili,TIAN Huaming,et al. Modeling and simulation analysis of high voltage power system[J]. Foreign Electronic Measurement Technology,2017,36(12):32-35.
[2]赵杰.光伏发电并网系统的相关技术研究[D].天津:天津大学,2012.ZHANG Jie. Research on the related technology of gridconnected system of photovoltaic power generation[D].Tianjin:Tianjin University,2012.
[3]张燕涛,黄伦,高红杰,等.电网的谐波危害、监测和治理[J].陕西电力,2007(9):45-48.ZHANG Yantao,HUAN Lun,GAO Hongjie,et al. Harmfulness, Monitoring&Treatment of Network Harmonic[J]. Shaanxi Electric Power,2007(9):45-48.
[4]陈炜,艾欣,吴涛,等.光伏并网发电系统对电网的影响研究综述[J].电力自动化设备,2013,33(2):26-33.CHEN Wei,AI Xin,WU Tao,et al. Influence of grid-connected photovoltaic system on power network[J]. ElectricPower Automation Equipment,2013,33(2):26-33.
[5]韩晓娟,李建林,等.风光储系统容量优化配置及经济性评估[M].北京:中国电力出版社,2016.HAN Xiaojuan,LI Jianlin,et al. Optimal allocation andeconomic evaluation of wind and solar storage system capacity[M]. Beijing:China Electric Power Press,2016.
[6]王长贵,崔荣强,等.新能源发电技术[M].北京:中国电力出版社,2003.WANG Changgui,CUI Rongqiang,et al. New Energy Generation Technology[M]. Beijing:China Electric PowerPress,2003.
[7]ISHIKAWA T. Grid-connected photovoltaic power systems:Survey of inverter and related protection quipmcnts[R]. Tokyo,Japan:Report IEA-PVPS Task,2002.
[8]谢宁,罗安,陈燕东,等.大型光伏电站动态建模及谐波特性分析[J].中国电机工程学报,2013,33(36):10-16.XIE Ning,LUO An,CHEN Yandong,et al. Dynamic Modeling and Characteristic Analysis on Harmonics of Photovoltaic Power Stations[J]. Proceedings of the CSEE,2013,33(36):10-16.
[9]林涛,王思源,郑杰.基于ETAP的电力系统电能质量问题研究与分析[J].电力科学与技术学报,2010,25(1):27-34.LIN Tao,WANG Siyuan,ZHENG Jie. Power quality analysis based on ETAP software[J]. Journal of Electric PowerScience and Technology,2010,25(1):27-34.
[10]郑杰,林涛,毕玥,等.基于电力系统分析软件ETAP的电网谐波分析[J].电网与清洁源,2011,27(7):7-12.ZHENG Jie,LIN Tao,BI Yue,et al. Harmonic analysisof power grid based on power system analysis softwareETAP[J]. Power System and Clean Energy,2011,27(7):7-12.
[11]刘路,宁文辉,黄东山.应用ETAP软件对用户谐波影响进行评估[J].广西电力,2008(1):1-4.LIU Lu,NING Wenhui,HUANG Dongshan. Applicationof ETAP Software on Assessment of Power Consumers'Harmonic Influences[J]. Guangxi Electric Power,2008(1):1-4.
[12]冯煜珵,王雷,陈陈.电力系统分析软件ETAP的特点与功能简介[J].供用电,2005,22(5):23-26.FENG Yucheng,WANG Lei,CHEN Chen. An introduction to the features and functions of the power system simulation software ETAP[J]. Distribution&Utilization,2005,22(5):23-26.
[13]王皓怀,汤涌,侯俊贤,等.风光储联合发电系统的组合建模与等值[J].中国电机工程学报,2011,31(34):1-9.WANG Haohuai,TANG Yong,HOU Junxian,et al. Composition Modeling and Equivalence of an Integrated Power Generation System of Wind,Photovoltaic and EnergyStorage Unit[J]. Proceedings of the CSEE,2011,31(34):1-9.
[14]孙巍巍,曾江,俞家良.谐波国标中95%概率值评价方式的探讨[J].电力系统保护与控制,2012,40(18):7-11.SUN Weiwei,ZENG Jiang,YU Jialiang. Research on theevalution mode of 95%probability value in the nationalstandard GB/T 14549-93[J]. Power System Protectionand Control,2012,40(18):7-11.
[15]常帅,郭昆丽,王建波.电气化铁路谐波对地区电网的影响西[J].西安工程学报,2016,30(3):327-332.CHANG Shuai,GUO Kunli,WANG Jianbo. The influence of electrified railway harmonics on regional powergrid[J]. Journal of Xi'an Polytechnic University,2016,30(3):327-332.
[16]丁换换,刘毅力,田华明,等.高压电力系统的建模及仿真分析[J].国外电子测量技术,2017,36(12):32-35.DING Huanhuan,LIU Yili,TIAN Huaming,et al. Modeling and simulation analysis of high voltage power system[J]. Foreign Electronic Measurement Technology,2017,36(12):32-35.