含高密度光伏电源的受端电网暂态电压有理分式拟合分析
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摘要
高密度的光伏发电系统从源荷端接入大型交直流混联电网,大幅度改变电网暂态响应特性,对电网的控制与运行提出了新的要求。该文提出利用有理分式拟合算法研究高密度分布式光伏电源接入对受端电网暂态电压的影响。首先,通过隐式梯形积分、Cramer法则等证明将有理分式拟合引入电网暂态分析的适用性。之后,建立含高密度分布式光伏电源的受端电网场景,对故障期间和恢复阶段的光伏出口电压值与逆变器控制参数间的关系进行有理分式拟合,验证方法的有效性。
The high level penetration of photovoltaic(PV)power generation into large-scale AC-DC power grid from the sending and receiving area significantly changes the transient response characteristics of the power grid, and puts forward new requirements for the control and operation of the power grid. In this paper, the influence of high level PV penetration on transient voltage of receiving grid was studied based on rational fraction fitting method. Firstly, the feasibility of introducing rational fraction fitting method into power grid transient analysis was proved, based on trapezoidal integration and Cramer's rule. Then, a simulation scenario for a receiving system with high level PV penetration was established, the parametric relationship between the PV terminal voltage and the control parameters of the inverter during the fault-on and recovery stage was studied by rational fraction method, which showed the effectiveness of the proposed method.
The high level penetration of photovoltaic(PV)power generation into large-scale AC-DC power grid from the sending and receiving area significantly changes the transient response characteristics of the power grid, and puts forward new requirements for the control and operation of the power grid. In this paper, the influence of high level PV penetration on transient voltage of receiving grid was studied based on rational fraction fitting method. Firstly, the feasibility of introducing rational fraction fitting method into power grid transient analysis was proved, based on trapezoidal integration and Cramer's rule. Then, a simulation scenario for a receiving system with high level PV penetration was established, the parametric relationship between the PV terminal voltage and the control parameters of the inverter during the fault-on and recovery stage was studied by rational fraction method, which showed the effectiveness of the proposed method.
引文
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[17]Zhou Yongzhi,Wu Hao,Gu Chenghong,et al.A novel method of polynomial approximation for parametric problems in power systems[J].IEEE Transactions on Power Systems,2017,32(4):3298-3307.
[18]Shi Peng,Zhou Jinghao,Gan Deqiang,et al.A rational fractional representation method for wind power integrated power system parametric stability analysis[J].IEEE Transactions on Power Systems,2018,33(6):7122-7131.
[19]郑超,林俊杰,赵健,等.规模化光伏并网系统暂态功率特性及电压控制[J].中国电机工程学报,2015,35(5):1059-1071.Zheng Chao,Lin Junjie,Zhao Jian,et al.Transient power characteristic of scaled photovoltaic grid-connected system and its voltage control[J].Proceedings of the CSEE,2015,35(5):1059-1071(in Chinese).
[20]Gan D,Thomas R J,Zimmerman R D.Stabilityconstrained optimal power flow[J].IEEE Transactions on Power Systems,2000,15(2):535-540.
[21]Bhattacharyya S P,Keel L H,Mohsenizadeh D N.Linear systems[M].New Delhi:Springer,2014.
[22]赵洪山,宋国维,江全元.利用平衡理论进行电力系统模型降阶[J].电工技术学报,2010,25(2):127-133.Zhao Hongshan,Song Guowei,Jiang Quanyuan.Reduction of power system model using balanced realization method[J].Transactions of China Electrotechnical Society,2010,25(2):127-133(in Chinese).
[2]李明节.大规模特高压交直流混联电网特性分析与运行控制[J].电网技术,2016,40(4):985-991.Li Mingjie.Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids[J]Power System Technology,2016,40(4):985-991(in Chinese).
[3]李琼慧,王彩霞.从电力发展“十三五”规划看新能源发展[J].中国电力,2017,50(1):30-36.Li Qionghui,Wang Caixia.Analysis on new energy development based on the 13th five-year electric power planning[J].Electric Power,2017,50(1):30-36(in Chinese).
[4]郑超,汤涌,马世英,等.直流参与稳定控制的典型场景及技术需求[J].中国电机工程学报,2014,34(22):3750-3759.Zheng Chao,Tang Yong,Ma Shiying,et al.A survey on typical scenarios and technology needs for HVDCparticipated into stability control[J].Proceedings of the CSEE,2014,34(22):3750-3759(in Chinese).
[5]丁明,王伟胜,王秀丽,等.大规模光伏发电对电力系统影响综述[J].中国电机工程学报,2014,34(1):1-14.Ding Ming,Wang Weisheng,Wang Xiuli,et al.A review on the effect of large-scale PV generation on power systems[J].Proceedings of the CSEE,2014,34(1):1-14(in Chinese).
[6]Ari G K,Baghzouz Y.Impact of high PV penetration on voltage regulation in electrical distribution systems[C]//Proceedings of 2011 International Conference on Clean Electrical Power.Ischia,Italy:IEEE,2011:744-748.
[7]Tan Y T,Kirschen D S.Impact on the power system of a large penetration of photovoltaic generation[C]//Proceedings of 2007 IEEE Power Engineering Society General Meeting.Tampa,FL,USA:IEEE,2007:1-8.
[8]Alquthami T,Ravindra H,Faruque M O,et al.Study of photovoltaic integration impact on system stability using custom model of PV arrays integrated with PSS/E[C]//Proceedings of the North American Power Symposium.Arlington,TX,USA:IEEE,2010:1-8.
[9]汤涌.电力系统电压稳定性分析[M].北京:科学出版社,2011.Tang Yong.Voltage stability analysis in power system[M].Beijing:Science Press,2011(in Chinese).
[10]Xin Huanhai,Gan Deqiang,Huang Zhilong,et al.Applications of stability-constrained optimal power flow in the east china system[J].IEEE Transactions on Power Systems,2010,25(3):1423-1433.
[11]Chiang H D.Direct methods for stability analysis of electric power systems:theoretical foundation,BCUmethodologies,and applications[M].Hoboken,NJ:John Wiley&Sons,2011.
[12]Xin H,Can D,Li Y,et al.Transient stability preventive control and optimization via power system stability region analysis[C]//Proceedings of 2006 IEEE Power Engineering Society General Meeting.Montreal,Que.,Canada:IEEE,2006:8.
[13]Pang C K,Prabhakara F S,El-Abiad A H,et al.Security evaluation in power systems using pattern recognition[J].IEEE Transactions on Power Apparatus and Systems,1974,PAS-93(3):969-976.
[14]Hockenberry J R,Lesieutre B C.Evaluation of uncertainty in dynamic simulations of power system models:the probabilistic collocation method[J].IEEE Transactions on Power Systems,2004,19(3):1483-1491.
[15]Zhou Jinghao,Shi Peng,Gan Deqiang,et al.Large-scale power system robust stability analysis based on value set approach[J].IEEE Transactions on Power Systems,2017,32(5):4012-4023.
[16]周永智.电力系统参数化问题的多项式逼近方法及其在交直流受端系统分析中的应用[D].杭州:浙江大学,2017.Zhou Yongzhi.Polynomial approximation method for parametric problems of power systems and its applications to the analyses of AC/DC receiving-end system[D].Hangzhou:Zhejiang University,2017(in Chinese).
[17]Zhou Yongzhi,Wu Hao,Gu Chenghong,et al.A novel method of polynomial approximation for parametric problems in power systems[J].IEEE Transactions on Power Systems,2017,32(4):3298-3307.
[18]Shi Peng,Zhou Jinghao,Gan Deqiang,et al.A rational fractional representation method for wind power integrated power system parametric stability analysis[J].IEEE Transactions on Power Systems,2018,33(6):7122-7131.
[19]郑超,林俊杰,赵健,等.规模化光伏并网系统暂态功率特性及电压控制[J].中国电机工程学报,2015,35(5):1059-1071.Zheng Chao,Lin Junjie,Zhao Jian,et al.Transient power characteristic of scaled photovoltaic grid-connected system and its voltage control[J].Proceedings of the CSEE,2015,35(5):1059-1071(in Chinese).
[20]Gan D,Thomas R J,Zimmerman R D.Stabilityconstrained optimal power flow[J].IEEE Transactions on Power Systems,2000,15(2):535-540.
[21]Bhattacharyya S P,Keel L H,Mohsenizadeh D N.Linear systems[M].New Delhi:Springer,2014.
[22]赵洪山,宋国维,江全元.利用平衡理论进行电力系统模型降阶[J].电工技术学报,2010,25(2):127-133.Zhao Hongshan,Song Guowei,Jiang Quanyuan.Reduction of power system model using balanced realization method[J].Transactions of China Electrotechnical Society,2010,25(2):127-133(in Chinese).