RESEARCH ON FAST RECOVERY OF LVRT AND ITS IMPACT ON MICROGRID FREQUENCY

Yan Xiangwu; Yang Ruojia; Shen Zhongyu; Jia Jiaoxin

doi:10.19912/j.0254-0096.tynxb.2024-0281

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (6) : 393-400. DOI: 10.19912/j.0254-0096.tynxb.2024-0281

RESEARCH ON FAST RECOVERY OF LVRT AND ITS IMPACT ON MICROGRID FREQUENCY

Yan Xiangwu¹, Yang Ruojia¹, Shen Zhongyu², Jia Jiaoxin¹

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Abstract

The article proposes an improved MPPT low voltage ride-through control strategy, which not only considers the influence of reactive power on voltage recovery, but also analyzes the influence of power change on the frequency of microgrid from the perspective of frequency recovery during LVRT. This strategy decouples the MPPT control, allowing the photovoltaic panels to quickly track the voltage corresponding to the maximum power point after a fault recovery. This enables faster attainment of the maximum power output, thereby facilitating the rapid restoration of grid frequency. Through experimental comparative analysis, the article examines the photovoltaic output voltage, inverter power output, and changes in grid frequency during the low voltage ride-through process under the improved MPPT strategy and traditional FPPT control. The results demonstrate the superiority of the improved strategy in supporting grid frequency.

Key words

electric inverters / photovoltaic power generation / frequency stability / low voltage ride-through / transient stability / maximum power point tracking control

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Yan Xiangwu, Yang Ruojia, Shen Zhongyu, Jia Jiaoxin. RESEARCH ON FAST RECOVERY OF LVRT AND ITS IMPACT ON MICROGRID FREQUENCY[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 393-400 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0281

References

[1] 贾焦心, 颜湘武, 杨鹏, 等. 多VSC系统有功功率-频率动态的电路建模方法[J]. 中国电机工程学报, 2022, 42(5): 1933-1945.
JIA J X, YAN X W, YANG P, et al.Circuit modeling method of active power-frequency dynamics for multiple-VSC systems[J]. Proceedings of the CSEE, 2022, 42(5): 1933-1945.
[2] 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 M, WANG W S, WANG X L, 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.
[3] 杨思为, 张兴, 毛旺, 等. 弱电网下级联H桥光伏并网逆变器稳定性分析[J]. 太阳能学报, 2022, 43(1): 398-405.
YANG S W, ZHANG X, MAO W, et al.Stability analysis of CHB photovoltaic grid-connected inverter in weak grid[J]. Acta energiae solaris sinica, 2022, 43(1): 398-405.
[4] GB/T 32892—2016, 光伏发电系统模型及参数测试规程[S].
GB/T 32892—2016, Model and parameter test regulation for photovoltaic power system[S].
[5] GB/T 19964—2012, 光伏发电站接入电力系统技术规定[S].
GB/T 19964—2012, Technical requirements for connecting photovoltaic power station to power system[S].
[6] KJAER S B, PEDERSEN J K, BLAABJERG F.A review of single-phase grid-connected inverters for photovoltaic modules[J]. IEEE transactions on industry applications, 2005, 41(5): 1292-1306.
[7] 张兴, 曹仁贤. 太阳能光伏并网发电及其逆变控制[M]. 2版. 北京: 机械工业出版社, 2018.
ZHANG X, CAO R X.Solar photovoltaic grid-connected power generation and its inverter control[M]. 2nd ed. Beijing: China Machine Press, 2018.
[8] 解吉蔷, 杨秀, 王巨波. 基于MPPT运行模式的光伏发电系统低电压穿越无功控制策略[J]. 太阳能学报, 2019, 40(12): 3426-3434.
XIE J Q, YANG X, WANG J B.A reactive power control strategy in low-voltage ride-through of photovoltaic generation system based on MPPT mode[J]. Acta energiae solaris sinica, 2019, 40(12): 3426-3434.
[9] MAGUEED F A, SANNINO A, SVENSSON J.Transient performance of voltage source converter under unbalanced voltage dips[C]//2004 IEEE 35th Annual Power Electronics Specialists Conference, Aachen, Germany, 2004: 1163-1168.
[10] 刘力, 于佳丽. 不对称电网电压下光伏并网逆变器控制策略研究[J]. 太阳能学报, 2017, 38(10): 2848-2856.
LIU L, YU J L.Research of control strategy of grid connected PV inverter under asymmetric grid voltage[J]. Acta energiae solaris sinica, 2017, 38(10): 2848-2856.
[11] 李光辉. 单级式光伏并网逆变器控制技术的研究[D]. 保定: 华北电力大学(河北), 2010.
LI G H.Research on control technology of single-stage photovoltaic grid-connected inverter[D]. Baoding: North China Electric Power University, 2010.
[12] 曹善康, 马啸, 汪光远, 等. 网侧故障下系统友好型直流微网协调控制策略[J]. 中国电机工程学报, 2021, 41(23): 7950-7962.
CAO S K, MA X, WANG G Y, et al.System-friendly DC microgrid coordination control strategy under AC grid fault[J]. Proceedings of the CSEE, 2021, 41(23): 7950-7962.
[13] 徐可寒, 张哲, 刘慧媛, 等. 光伏电源故障特性研究及影响因素分析[J]. 电工技术学报, 2020, 35(2): 359-371.
XU K H, ZHANG Z, LIU H Y, et al.Study on fault characteristics and its related impact factors of photovoltaic generator[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 359-371.
[14] 王书征, 李先允, 许峰. 不对称电网故障下级联型光伏并网逆变器的低电压穿越控制[J]. 电力系统保护与控制, 2019, 47(13): 84-91.
WANG S Z, LI X Y, XU F.Low voltage ride-through controlling of cascaded inverter for grid-connected photovoltaic systems under asymmetric grid fault[J]. Power system protection and control, 2019, 47(13): 84-91.
[15] 田雨果, 王彤, 邢其鹏, 等. 计及虚拟惯量控制与低电压穿越的光伏发电系统暂态稳定分析[J]. 电力系统保护与控制, 2022, 50(2): 52-59.
TIAN Y G, WANG T, XING Q P, et al.Transient stability analysis of a photovoltaic generation system considering virtual inertia control and low voltage ride-through[J]. Power system protection and control, 2022, 50(2): 52-59.
[16] 陈亚爱, 刘劲东, 周京华. 太阳能并网逆变器故障穿越控制策略[J]. 中国电机工程学报, 2014, 34(21): 3405-3412.
CHEN Y A, LIU J D, ZHOU J H.Fault ride-through control strategy for solar grid-connected inverters[J]. Proceedings of the CSEE, 2014, 34(21): 3405-3412.
[17] 贾利虎, 朱永强, 孙小燕, 等. 基于模型电流预测控制的光伏电站低电压穿越控制方法[J]. 电力系统自动化, 2015, 39(7): 68-74.
JIA L H, ZHU Y Q, SUN X Y, et al.A control method of low voltage ride through for photovoltaic plant based on model current predictive control[J]. Automation of electric power systems, 2015, 39(7): 68-74.
[18] 王蒙, 张文朝, 汪莹, 等. 高比例光伏接入的电力系统暂态过电压控制策略[J]. 太阳能学报, 2023, 44(10): 148-155.
WANG M, ZHANG W C, WANG Y, et al.Transient overvoltage control strategy of power system considering high proportion photovoltaic access[J]. Acta energiae solaris sinica, 2023, 44(10): 148-155.
[19] 廖志凌, 阮新波. 任意光强和温度下的硅太阳电池非线性工程简化数学模型[J]. 太阳能学报, 2009, 30(4): 430-435.
LIAO Z L, RUAN X B.Non-linear engineering simplification model of silicon solar cells in arbitrary solar radiation and temperature[J]. Acta energiae solaris sinica, 2009, 30(4): 430-435.
[20] 曹斌, 刘文焯, 原帅, 等. 基于低电压穿越试验的光伏发电系统建模研究[J]. 电力系统保护与控制, 2020, 48(18): 146-155.
CAO B, LIU W Z, YUAN S, et al.Modeling of photovoltaic power system based on low voltage ride-through test[J]. Power system protection and control, 2020, 48(18): 146-155.