含虚拟同步机光伏并网电力系统小干扰稳定约束最优潮流算法

李生虎; 宫俊伟; 夏伟健; 姚家伟

doi:10.19912/j.0254-0096.tynxb.2023-1331

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (12) : 146-153. DOI: 10.19912/j.0254-0096.tynxb.2023-1331

含虚拟同步机光伏并网电力系统小干扰稳定约束最优潮流算法

李生虎^1,2, 宫俊伟^1,2, 夏伟健^1,2, 姚家伟^1,2

作者信息 +

SMALL DISTURBANCE STABILITY CONSTRAINED OPTIMAL POWER FLOW ALGORITHM OF PHOTOVOLTAIC GRID-CONNECTED POWER SYSTEMS WITH VIRTUAL SYNCHRONOUS GENERATOR

Li Shenghu^1,2, Gong Junwei^1,2, Xia Weijian^1,2, Yao Jiawei^1,2

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摘要

为改善含虚拟同步机（VSG）光伏（PV）并网电力系统小干扰稳定性,根据特征值及其阻尼比,筛选电力系统弱阻尼振荡模式和邻近失稳模式。建立上述危险模式对PV-VSG控制参数灵敏度,进而以潮流雅克比矩阵为桥梁,提出危险模式对同步发电机（SG）出力灵敏度的解析表达。以控制参数和SG出力调整量最小为目标函数,以危险模式阈值为约束,提出PV-VSG并网电力系统稳定约束最优潮流（SC-OPF）算法。算例结果分析了对危险模式的优化控制效果,验证了所提算法的有效性。

Abstract

To improve the stability of the photovoltaic （PV） grid-connected power systems with virtual synchronous generator （VSG）, and the weakly damped modes and the marginal stable modes are screened according to the eigenvalues and the damping ratios. The sensitivities of these critical modes with respect to the control parameters of the PV-SVG are derived. With the help of the Jacobian matrix of the power flow equations, the sensitivities of the critical modes with respect to the active power of the synchronous generator （SG） is proposed. With the objective function of the minimum adjustment to the control parameters and the SGs' active power, and the constraints of the criterion of the critical modes, the stability constrained optimal power flow（SC-OPF） algorithm for the PV-VSG integrated power systems is proposed. The numerical results confirm the effect of the optimized control on the critical modes, and verify the effectiveness of the proposed algorithm.

导出引用

李生虎, 宫俊伟, 夏伟健, 姚家伟. 含虚拟同步机光伏并网电力系统小干扰稳定约束最优潮流算法[J]. 太阳能学报. 2024, 45(12): 146-153 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1331

Li Shenghu, Gong Junwei, Xia Weijian, Yao Jiawei. SMALL DISTURBANCE STABILITY CONSTRAINED OPTIMAL POWER FLOW ALGORITHM OF PHOTOVOLTAIC GRID-CONNECTED POWER SYSTEMS WITH VIRTUAL SYNCHRONOUS GENERATOR[J]. Acta Energiae Solaris Sinica. 2024, 45(12): 146-153 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1331

中图分类号： TM712

参考文献

[1] 刘辉, 高舜安, 孙大卫, 等. 光伏虚拟同步发电机并网小信号稳定性分析[J]. 太阳能学报, 2021, 42(2): 417-424.
LIU H, GAO S A, SUN D W, et al.Small signal stability analysis of grid-connected photovoltaic virtual synchronous generators[J]. Acta energiae solaris sinica, 2021, 42(2): 417-424.
[2] 石荣亮, 王斌, 黄冀, 等. 储能虚拟同步机的并网阻尼特性分析与改进策略[J]. 太阳能学报, 2023, 44(7): 30-38.
SHI R L, WANG B, HUANG J, et al.Analysis and improvement strtegy of grid-connected damping characteristic for energy storage VSG[J]. Acta energiae solaris sinica, 2023, 44(7): 30-38.
[3] 刘辉, 孙大卫, 宋鹏, 等. 电压环对光伏虚拟同步机系统稳定性的影响[J]. 太阳能学报, 2021, 42(3): 311-318.
LIU H, SUN D W, SONG P, et al.Influence of voltage loop on stability of photovoltaic virtual synchronous generators[J]. Acta energiae solaris sinica, 2021, 42(3): 311-318.
[4] 巩宇, 王阳, 李智, 等. 光伏虚拟同步发电机工程应用效果分析及优化[J]. 电力系统自动化, 2018, 42(9): 149-156.
GONG Y, WANG Y, LI Z, et al.Engineering application effect analysis and optimization of photovoltaic virtual synchronous generator[J]. Automation of electric power systems, 2018, 42(9): 149-156.
[5] 吕志鹏, 盛万兴, 刘海涛, 等. 虚拟同步机技术在电力系统中的应用与挑战[J]. 中国电机工程学报, 2017, 37(2): 349-360.
LYU Z P, SHENG W X, LIU H T, et al.Application and challenge of virtual synchronous machine technology in power system[J]. Proceedings of the CSEE, 2017, 37(2): 349-360.
[6] 巨云涛, 马雅蓉, 齐志男. 基于阻尼转矩分析的虚拟同步机对小干扰稳定的影响机理研究[J]. 中国电机工程学报, 2020, 40(增刊1): 98-107.
JU Y T, MA Y R, QI Z N.Research on the effect mechanism of virtual synchronous generator on small-signal stability based on damped torque analysis[J]. Proceedings of the CSEE, 2020, 40(Sup1): 98-107.
[7] LI B, ZHOU L, YU X R, et al.Improved power decoupling control strategy based on virtual synchronous generator[J]. IET power electronics, 2017, 10(4): 462-470.
[8] 任自盼, 鲁宝春, 赵亚龙, 等. 光伏虚拟同步发电机建模与仿真研究[J]. 电力系统保护与控制, 2019, 47(13): 92-99.
REN Z P, LU B C, ZHAO Y L, et al.Research on modeling and simulation of photovoltaic virtual synchronous generator[J]. Power system protection and control, 2019, 47(13): 92-99.
[9] 葛俊, 刘辉, 江浩, 等. 虚拟同步发电机并网运行适应性分析及探讨[J]. 电力系统自动化, 2018, 42(9): 26-35.
GE J, LIU H, JIANG H, et al.Analysis and investigation on grid-connected operation adaptability of virtual synchronous generators[J]. Automation of electric power systems, 2018, 42(9): 26-35.
[10] 孙大卫, 刘辉, 吴林林, 等. 虚拟同步发电机对低频振荡的影响建模与特性分析[J]. 电力系统自动化, 2020, 44(24): 134-144.
SUN D W, LIU H, WU L L, et al.Modeling and characteristic analysis on influence of virtual synchronous generator on low-frequency oscillation[J]. Automation of electric power systems, 2020, 44(24): 134-144.
[11] 晁凯云, 苗世洪, 刘子文, 等. 基于虚拟同步电机控制的微电网稳定性分析[J]. 电力系统保护与控制, 2019, 47(3): 9-16.
CHAO K Y, MIAO S H, LIU Z W, et al.Stability analysis of microgrid based on virtual synchronous generator control[J]. Power system protection and control, 2019, 47(3): 9-16.
[12] 张宝群, 胡长斌, 马龙飞, 等. 基于小信号稳定性分析的含VSG微电网电能质量主动控制[J]. 电力系统自动化, 2019, 43(23): 210-216.
ZHANG B Q, HU C B, MA L F, et al.Active power quality control for microgrid with virtual synchronous generator based on small-signal stability analysis[J]. Automation of electric power systems, 2019, 43(23): 210-216.
[13] WU T, LIU Z, LIU J J, et al.A unified virtual power decoupling method for droop-controlled parallel inverters in microgrids[J]. IEEE transactions on power electronics, 2016, 31(8): 5587-5603.
[14] WANG R, SUN Q Y, ZHANG P J, et al.Reduced-order transfer function model of the droop-controlled inverter via Jordan continued-fraction expansion[J]. IEEE transactions on energy conversion, 2020, 35(3): 1585-1595.
[15] LIU J, MIURA Y, BEVRANI H, et al.Enhanced virtual synchronous generator control for parallel inverters in microgrids[J]. IEEE transactions on smart grid, 2017, 8(5): 2268-2277.
[16] 曹炜, 钦焕乘, 陆建忠, 等. 新型电力系统下虚拟同步机的定位和应用前景展望[J]. 电力系统自动化, 2023, 47(4): 190-207.
CAO W, QIN H C, LU J Z, et al.Orientation and application prospect of virtual synchronous generator in new power system[J]. Automation of electric power systems, 2023, 47(4): 190-207.
[17] 王亚军, 杨立波, 马斌, 等. 虚拟同步机惯量及阻尼系数协调优化方法[J]. 电力系统保护与控制, 2022, 50(19): 88-98.
WANG Y J, YANG L B, MA B, et al.Coordination and optimization strategy of virtual inertia and damping coefficient of a virtual synchronous generator[J]. Power system protection and control, 2022, 50(19): 88-98.
[18] POURNAZARIAN B, SANGRODY R, LEHTONEN M, et al.Simultaneous optimization of virtual synchronous generators parameters and virtual impedances in islanded microgrids[J]. IEEE transactions on smart grid, 2022, 13(6): 4202-4217.
[19] 李生虎, 叶剑桥, 陈东. 基于无源控制的DFIG并网次同步控制相互作用抑制策略研究[J]. 电力系统保护与控制, 2023, 51(11): 77-85.
LI S H, YE J Q, CHEN D.Passive control strategy to mitigate sub-synchronous control interaction of DFIG-based integrated power systems[J]. Power system protection and control, 2023, 51(11): 77-85.
[20] 涂春鸣, 谢伟杰, 肖凡, 等. 多虚拟同步发电机并联系统控制参数对稳定性的影响分析[J]. 电力系统自动化, 2020, 44(15): 77-86.
TU C M, XIE W J, XIAO F, et al.Influence analysis of control parameters of parallel system with multiple virtual synchronous generators on stability[J]. Automation of electric power systems, 2020, 44(15): 77-86.
[21] 徐海珍, 张兴, 刘芳, 等. 基于超前滞后环节虚拟惯性的VSG控制策略[J]. 中国电机工程学报, 2017, 37(7): 1918-1927.
XU H Z, ZHANG X, LIU F, et al.Virtual synchronous generator control strategy based on lead-lag link virtual inertia[J]. Proceedings of the CSEE, 2017, 37(7): 1918-1927.
[22] 杨兴武, 鲍一鸣, 孟致丞, 等. 基于阻抗重塑的虚拟同步发电机次同步振荡抑制方法[J]. 中国电机工程学报, 2024, 44(14): 5538-5548.
YANG X W, BAO Y M, MENG Z C, et al.Restraining method of sub-synchronous oscillation in virtual synchronous generator based on impedance reshaping[J]. Proceedings of the CSEE, 2024, 44(14): 5538-5548.
[23] 李生虎, 张奥博, 夏伟健, 等. 并网DFIG多通道附加阻尼控制器设计及其控制参数整定[J]. 电力自动化设备, 2023, 43(7): 73-79.
LI S H, ZHANG A B, XIA W J, et al.Design and parameter setting for multi-band supplementary damping controller of system integrated DFIG[J]. Electric power automation equipment, 2023, 43(7): 73-79.
[24] 程子洋. 基于反馈线性化的虚拟同步机控制策略研究[D]. 无锡: 江南大学, 2022.
CHENG Z Y.Research on control strategy of virtual synchronous generator based on feedback linearization[D]. Wuxi: Jiangnan University, 2022.
[25] ZHONG Q C, WEISS G.Synchronverters: inverters that mimic synchronous generators[J]. IEEE transactions on industrial electronics, 2011, 58(4): 1259-1267.
[26] 颜湘武, 刘正男, 徐恒波, 等. 虚拟同步发电机特性的三相逆变器小信号建模及分析[J]. 华北电力大学学报(自然科学版), 2016, 43(3): 1-8.
YAN X W, LIU Z N, XU H B, et al.Small-signal modeling and analysis of three-phase characteristics of virtual synchronous generator[J]. Journal of North China Electric Power University(natural science edition), 2016, 43(3): 1-8.
[27] 孙焜, 姚伟, 周毅, 等. 基于SISO序阻抗的直驱风场经柔直输电系统中频振荡机理分析及抑制[J]. 中国电机工程学报, 2023, 43(2): 442-454.
SUN K, YAO W, ZHOU Y, et al.Mechanism analysis and suppression of medium-frequency oscillation based on the SISO impedance in a PMSG-based wind farm when connected to a VSC-HVDC[J]. Proceedings of the CSEE, 2023, 43(2): 442-454.
[28] 付强, 杜文娟, 王海风. 多虚拟同步发电机接入对电力系统机电振荡模式的影响[J]. 中国电机工程学报, 2018, 38(19): 5615-5624, 5919.
FU Q, DU W J, WANG H F.Influence of multi virtual synchronous generators on power system electromechanical oscillation mode[J]. Proceedings of the CSEE, 2018, 38(19): 5615-5624, 5919.
[29] 李生虎, 蒋以天. 基于无功优化的DFIG并网电力系统OSC-OPF算法[J]. 电力系统自动化, 2020, 44(15): 70-76.
LI S H, JIANG Y T.Oscillatory stability constrained optimal power flow algorithm based on reactive power optimization for DFIG integrated power system[J]. Automation of electric power systems, 2020, 44(15): 70-76.
[30] 袁敞, 毕嘉亮, 陈虎, 等. 多虚拟同步机系统的自适应滑模变结构控制方法[J]. 电力系统保护与控制, 2023, 51(8): 26-36.
YUAN C, BI J L, CHEN H, et al.Adaptive sliding mode variable structure control for multi virtual synchronous machine systems[J]. Power system protection and control, 2023, 51(8): 26-36.
[31] 李生虎, 于新钰, 华玉婷, 等. 基于DFIG无功出力灵敏度的电网弱阻尼模式抑制[J]. 高电压技术, 2022, 48(4): 1356-1364.
LI S H, YU X Y, HUA Y T, et al.Suppression to power system in weakly damped modes based on sensitivity to reactive output of DFIG[J]. High voltage engineering, 2022, 48(4): 1356-1364.
[32] 陶亮, 程军照, 王文玺, 等. 虚拟同步发电机参数设计及优化方法[J]. 电力系统保护与控制, 2018, 46(12): 128-135.
TAO L, CHENG J Z, WANG W X, et al.Methods of parameter design and optimization in virtual synchronous generator technology[J]. Power system protection and control, 2018, 46(12): 128-135.
[33] 张林, 张海波, 蒋维勇, 等. 基于自适应动态虚拟同步阻抗的虚拟同步机功率解耦策略[J]. 中国电机工程学报, 2024, 44(15): 6010-6023.
ZHANG L, ZHANG H B, JIANG W Y, et al.Power decoupling strategy for virtual synchronous generator based on adaptive dynamic virtual synchronous impedance[J]. Proceedings of the CSEE, 2024, 44(15): 6010-6023.