陈少伟,林坤杰,陈碧琳
CHEN Shaowei,LIN Kunjie,CHEN Bilin

• 1:国网福建省漳州供电有限公司

摘要(Abstract)：

为解决大量分布式光伏接入配电网带来的电能质量问题，基于分布式光伏发电系统的工作原理，分析了双极性SPWM（正弦脉冲宽度调制）控制算法对逆变器谐波特性的影响，以及恒功率控制策略对控制器控制算法的影响。通过分析光伏电源的发电功率与调制信号幅值的机理关系，推导出发电功率与并网谐波电压的函数表达式，建立光伏电源的谐波源机理模型。采用PSCAD搭建光伏电源模型，在发电功率不确定与波动的情况下，测量注入电网的谐波电流和并网的谐波电压，与谐波源机理模型计算的理论值进行比较，验证了谐波源机理模型的合理性。
To resolve problems of power quality given rise to by the integration of large-scale distributed photovoltaic power generation,the paper analyzes the influence of bipolar SPWM control algorithm on the harmonic characteristics of inverters as well as the influence of constant power control strategy on control algorithm of controllers. The relationship between mechanisms of the power of the photovoltaic power supply and the amplitude of the modulated signal is analyzed to derive a function expression between power of power generation and post-integration harmonic voltage. Moreover,a harmonic source mechanism model of photovoltaic power generation is established. PSCAD is used to build a photovoltaic power generation model. Under the condition of power uncertainties and fluctuations of power generation,the harmonic current injected into the grid and the harmonic voltage connected to the grid are measured and compared with the theoretical values calculated by the harmonic source mechanism model. The rationality of the harmonic source mechanism model is verified.

关键词(KeyWords)： 电能质量;机理建模;双极性SPWM控制;谐波源
power quality;mechanism modeling;bipolar SPWM control;harmonic source

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈少伟,林坤杰,陈碧琳
CHEN Shaowei,LIN Kunjie,CHEN Bilin

参考文献(References)：

• [1]邵振国，许昊铂，肖颂勇，等.新能源电网中的谐波问题[J].电力系统保护与控制，2021,49(4):178-187.
• [2]周琪琪，邵振国，林韩.基于秩和比综合评价法的用户谐波危害分级评估[J].电力电容器与无功补偿，2018,39(5):116-122.
• [3]王攸然，张逸，邵振国，等.谐波责任划分研究现状及在分布式电源并网条件下的展望[J].电工电能新技术，2019,38(1):61-69.
• [4] XU W.Component modeling issues for power quality assessment[J].IEEE Power Engineering Review,2001,21(11):12-17.
• [5] HIYAMA T,HAMMAM MSAA,ORTMEYER TH.Distribution system modeling with distributed harmonic sources[J].IEEE Transactions on Power Delivery,1989,4(2):1297-1304.
• [6] YE Y,KAZERANI M,QUINTANA V H. Modeling,control and implementation of three-phase PWM converters[J].IEEE Transactions on Power Electronics,2003,18(3):857-864.
• [7] THUNBERG E,S?DER L.A harmonic norton model of a real distribution network[C]//8th International Conference on Harmonics and Quality of Power.Athens,Greece.IEEE,1998:279-284.
• [8] THUNBERG E,SODER L.A Norton approach to distribution network modeling for harmonic studies[J]. IEEE Transactions on Power Delivery,1999,14(1):272-277.
• [9] ABDELKADER S,ABDEL-RAHMAN MH,OSMAN MG.A Norton equivalent model for nonlinear loads[C]//Large Engineering System Canference oon Power Engineering.Canad.IEEE:63-67.
• [10] THUNBERG E,SODER L.On the performance of a distribution network harmonic Norton model[C]//Ninth International Conference on Harmonics and Quality of Power.USA.IEEE,2000:932-937.
• [11] YONG J,CHEN L,NASSIF AB,et al. A Frequencydomain harmonic model for compact fluorescent lamps[J].IEEE Transactions on Power Delivery.2010,25(2):1182-1189.
• [12] SUN Y,ZHANG G,XU W,et al.A harmonically coupled admittance matrix model for AC/DC converters[J].IEEE Transactions on Power Systems.2007,22(4):1574-1582.
• [13] YONG J,CHEN L,CHEN S. Modeling of home appliances for power distribution system harmonic analysis[J].IEEE Transactions on Power Delivery,2010,25(4):3147-3155.
• [14] SUN Y,WANG X,YIN Z.Non-iterative harmonic power flow analysis for power systems with multiple harmonic sources[J].Proceedings of the Csee,2012,32(7):83-90.
• [15]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):10-17.
• [16]吴文进，苏建徽，汪海宁，等.光伏并网逆变器受控源等效模型与谐振机理分析[J].太阳能学报，2020,41(1):92-100.
• [17]沈阳武，刘佳润，张斌，等.光伏逆变器动态谐波等效建模及其影响因素研究[J].电力系统及其自动化学报，2019,31(8):126-132.
• [18]王成山.微电网分析与仿真理论（智能电网研究与应用丛书）（精）[M].科学出版社，2013.
• [19]林渭勋.现代电力电子技术（研究生教学用书）[M].北京：机械工业出版社，2006.
• [20]吴忠，李红，左鹏，等.自然采样SPWM逆变电源的谐波分析及抑制策略[J].电网技术，2001,25(4):17-20.
• [21] HOLMES,GRAHAME D. Pulse width modulation for power converters:principles and practice[J]. Wiley&Sons,2003,45(1):71-77.
• [22]张军龙.微电网中分布式电源控制策略研究[D].武汉：华中科技大学，2014.
• [23]温烨婷，戴瑜兴，毕大强，等.一种电网友好型光储分布式电源控制策略[J].中国电机工程学报，2017,37(2):464-476.
• [24]邓元实，张睿，宁鑫，等.基于LC滤波的10 kV配电变压器低压侧整流融冰谐波抑制研究[J].电力电容器与无功补偿，2021(5):64-70.
• [25]毕会静，马燕峰，秦科源，等.不同配置模式下分布式光伏发电并网接纳仿真[J].电力电容器与无功补偿，2021(4):236-241.