ISLANDING DETECTION METHOD BASED ON CHARACTERISTIC FREQUENCY HARMONIC VOLTAGE

Gao Shuping; Guo Fangbin; Song Guobing; Li Xiaofang; Yu Kun

doi:10.19912/j.0254-0096.tynxb.2023-1931

PDF(2472 KB)

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 254-262. DOI: 10.19912/j.0254-0096.tynxb.2023-1931

ISLANDING DETECTION METHOD BASED ON CHARACTERISTIC FREQUENCY HARMONIC VOLTAGE

Gao Shuping^1,2, Guo Fangbin^1,2, Song Guobing³, Li Xiaofang^1,2, Yu Kun^1,2

Author information +

History +

Abstract

When the distributed power supply is disconnected from the main grid, the power supply to the local load should be cut off. In order to quickly and reliably detect this state and ensure the safe and stable operation of the system, this paper focuses on the islanding detection technology for three-phase grid-connected inverters in distributed power systems and proposes a novel passive islanding detection method based on the characteristic frequency harmonic voltages at the distributed generation （DG） side and the power grid side. Firstly, the harmonic responsibility of both sides at the common connection point is divided. According to the result of harmonic responsibility division, the characteristic frequency harmonics that have the greatest influence on the harmonic voltage at the common connection point are selected for islanding detection, and the setting criterion is given. Secondly, the theoretical value of the harmonic voltage ratio at point of common coupling before and after the island is deduced. When the variation of characteristic frequency harmonic voltage parameters on both sides of the islanding exceeds the setting threshold, the islanding is judged to occur. Finally, the proposed method is verified according to IEEE Std.1547.1 islanding detection standard. The simulation results show that this method can detect occurrence of islanding operation quickly, accurately and effectively. This method uses double criteria to reduce the possibility of misjudgment and improve the reliability of islanding detection. Compared with traditional passive islanding detection methods based on harmonic domain, this method can avoid the problems of difficulty in detecting frequency harmonics, difficulty in determining the threshold and being affected by background harmonics.

Key words

renewable energy / distributed power generation / threshold voltage / islanding detection / harmonic contribution / background harmonic

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Gao Shuping, Guo Fangbin, Song Guobing, Li Xiaofang, Yu Kun. ISLANDING DETECTION METHOD BASED ON CHARACTERISTIC FREQUENCY HARMONIC VOLTAGE[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 254-262 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1931

References

[1] 周林, 谢星宇, 郝高锋, 等. 一种新型的无功功率扰动孤岛检测方法[J]. 太阳能学报, 2020, 41(2): 275-283.
ZHOU L, XIE X Y, HAO G F, et al.A novel reactive power disturbance islanding detection method[J]. Acta energiae solaris sinica, 2020, 41(2): 275-283.
[2] 张军, 张新慧, 黄超艺, 等. 基于逆变器定频率控制的多分布式电源孤岛检测方法[J]. 电力系统自动化, 2022, 46(4): 123-131.
ZHANG J, ZHANG X H, HUANG C Y, et al.Islanding detection method for multiple distributed generators based on fixed frequency control of inverter[J]. Automation of electric power systems, 2022, 46(4): 123-131.
[3] 高淑萍, 汪凯昌, 李文浩. 基于谐波阻抗的光伏并网孤岛检测新方法[J]. 太阳能学报, 2018, 39(5): 1335-1341.
GAO S P, WANG K C, LI W H.A new islanding detection method for grid-connected photovoltaic system based on harmonic impedance component[J]. Acta energiae solaris sinica, 2018, 39(5): 1335-1341.
[4] 吴云亚, 阚加荣, 谢少军, 等. 三种频率偏移孤岛检测方法的性能比较[J]. 电网技术, 2016, 40(3): 964-971.
WU Y Y, KAN J R, XIE S J, et al.Performance comparison for three different frequency shift IDMs[J]. Power system technology, 2016, 40(3): 964-971.
[5] 吴盛军, 徐青山, 袁晓冬, 等. 光伏防孤岛保护检测标准及试验影响因素分析[J]. 电网技术, 2015, 39(4): 924-931.
WU S J, XU Q S, YUAN X D, et al.Anti-islanding detection standards for distributed PV power generations and analysis on factors influencing non-detection zone of islanded PV generation[J]. Power system technology, 2015, 39(4): 924-931.
[6] 戴志辉, 何静远, 于礼瑞, 等. 基于谐波电压突变的无功功率扰动孤岛检测法[J]. 电机与控制学报, 2023, 27(3): 10-20.
DAI Z H, HE J Y, YU L R, et al.Island detection method of reactive power disturbance based on harmonic voltage mutation[J]. Electric machines and control, 2023, 27(3): 10-20.
[7] 袁精,丁浩,魏艳君, 等. 基于有功电流扰动孤岛检测方法研究[J]. 电力电子技术, 2017, 51(1): 45-48.
YUAN J, DING H, WEI Y J, et al.Research on islanding detection method based on active current disturbance[J]. Power electronics, 2017, 51(1): 45-48.
[8] 唐忠, 朱瑞婷, 张合栋, 等. 基于无功电流扰动的孤岛与扰动辨识的研究[J]. 电力系统保护与控制, 2016, 44(22): 159-165.
TANG Z, ZHU R T, ZHANG H D, et al.Identification research of the island and the disturbance based on reactive current disturbance[J]. Power system protection and control, 2016, 44(22): 159-165.
[9] 杨恢东, 吴浪, 李心茹, 等. 改进的周期主动频移式孤岛检测方法[J]. 电力系统保护与控制, 2016, 44(16): 50-55.
YANG H D, WU L, LI X R, et al.An improved islanding detection method based on alternate active frequency drift[J]. Power system protection and control, 2016, 44(16): 50-55.
[10] 高淑萍, 郭芳宾, 邵美阳, 等. 基于电阻变化率和有功功率的混合孤岛检测方法[J]. 太阳能学报, 2024, 45(5): 324-332.
GAO S P, GUO F B, SHAO M Y, et al.Hybrid islanding detection method based on rate of change of resistance and active power[J]. Acta energiae solaris sinica, 2024, 45(5): 324-332.
[11] LIU N, DIDUCH C, CHANG L C, et al.A reference impedance-based passive islanding detection method for inverter-based distributed generation system[J]. IEEE journal of emerging and selected topics in power electronics, 2015, 3(4): 1205-1217.
[12] JANG S I, KIM K H.An islanding detection method for distributed generations using voltage unbalance and total harmonic distortion of current[J]. IEEE transactions on power delivery, 2004, 19(2): 745-752.
[13] XU W, ZHANG G B, LI C, et al.A power line signaling based technique for anti-islanding protection of distributed generators: Part I: scheme and analysis[J]. IEEE transactions on power delivery, 2007, 22(3): 1758-1766.
[14] 贾科, 朱正轩, 方煜, 等. 基于谐波阻抗量测的多端口光伏直流配电网孤岛检测法[J]. 电网技术, 2020, 44(4): 1229-1238.
JIA K, ZHU Z X, FANG Y, et al.Islanding detection method of multi-port photovoltaic DC distribution network based on harmonic impedance measurement[J]. Power system technology, 2020, 44(4): 1229-1238.
[15] SEYEDI M, TAHER S A, GANJI B, et al.A hybrid islanding detection method based on the rates of changes in voltage and active power for the multi-inverter systems[J]. IEEE transactions on smart grid, 2021, 12(4): 2800-2811.
[16] 孔祥瑞, 严正, 徐潇源, 等. 计及高阶统计量和深度学习的抗噪孤岛检测方法[J]. 电力系统自动化, 2019, 43(1): 58-64, 185.
KONG X R, YAN Z, XU X Y, et al.Anti-noise islanding detection approach based on high-order statistics and deep learning[J]. Automation of electric power systems, 2019, 43(1): 58-64, 185.
[17] 唐婷, 谢少军, 焦鑫艳. 基于电网阻抗测量的新型主动式孤岛检测法[J]. 电源学报, 2012, 10(6): 60-64.
TANG T, XIE S J, JIAO X Y.A new active islanding detection method based on specific frequency impedance measurement[J]. Journal of power supply, 2012, 10(6): 60-64.
[18] 陈巧地, 张兴, 李明, 等. 基于阻抗辨识的下垂控制并网逆变器孤岛检测方法[J]. 电力系统自动化, 2020, 44(7): 123-129.
CHEN Q D, ZHANG X, LI M, et al.Impedance identification based islanding detection method for grid-connected inverter with droop control[J]. Automation of electric power systems, 2020, 44(7): 123-129.
[19] 高淑萍, 汪凯昌, 贠保记, 等. 基于综合阻抗的孤岛检测新方法[J]. 太阳能学报, 2019, 40(2): 556-562.
GAO S P, WANG K C, YUN B J, et al.A novel islanding detection method based on integrated impedance[J]. Acta energiae solaris sinica, 2019, 40(2): 556-562.
[20] 陈永华, 唐冠军, 王森, 等. 基于谐波电压与基波频率的被动式孤岛检测方法[J]. 电力系统自动化, 2019, 43(14): 200-206.
CHEN Y H, TANG G J, WANG S, et al.Passive islanding detection method based on harmonic voltage and fundamental frequency[J]. Automation of electric power systems, 2019, 43(14): 200-206.
[21] 白洪山, 王鲁杨, 柏扬, 等. 基于定位d轴谐波电压偏移的孤岛检测新方法[J]. 电气传动, 2022, 52(6): 73-80.
BAI H S, WANG L Y, BAI Y, et al.A new islanding detection method based on the locating d-axis harmonic voltage offset[J]. Electric drive, 2022, 52(6): 73-80.
[22] 吕干云, 吴启宇, 吴晨媛, 等. 基于双向谐波电压变动的光伏并网孤岛检测[J]. 电力自动化设备, 2019, 39(3): 194-199.
LYU G Y, WU Q Y, WU C Y, et al.Islanding detection of grid-connected PV system based on bi-direction voltage harmonic variation[J]. Electric power automation equipment, 2019, 39(3): 194-199.
[23] 王行亚, 肖先勇, 吴俊, 等. 基于线性度校验的二元线性回归系统谐波阻抗估计方法[J]. 中国电机工程学报, 2020, 40(9): 2826-2835.
WANG H Y, XIAO X Y, WU J, et al.Utility harmonic impedance estimation based on binary linear regression with linearity calibration[J]. Proceedings of the CSEE, 2020, 40(9): 2826-2835.
[24] 龚华麟, 肖先勇, 刘亚梅, 等. 基于主导波动量筛选原理的用户谐波发射水平估计方法[J]. 中国电机工程学报, 2010, 30(4): 22-27.
GONG H L, XIAO X Y, LIU Y M, et al.A method for assessing customer harmonic emission level based on the dominant fluctuation filtering principle[J]. Proceedings of the CSEE, 2010, 30(4): 22-27.
[25] 宋晓庆, 徐永海, 陶顺, 等. 考虑背景波动与量测数据相位缺失的系统侧谐波阻抗估计方法[J]. 电力自动化设备, 2023, 43(6): 168-174, 210.
SONG X Q, XU Y H, TAO S, et al.System side harmonic impedance estimation method considering background fluctuation and phase angle missing of measurement data[J]. Electric power automation equipment, 2023, 43(6): 168-174, 210.
[26] 刘子腾, 徐永海, 丁一博, 等. 考虑背景谐波电压波动和阻抗变化的多谐波责任划分[J]. 电力电容器与无功补偿, 2021, 42(3): 84-91.
LIU Z T, XU Y H, DING Y B, et al.Multi-harmonic responsibility division considering background harmonic voltage fluctuation and impedance variation[J]. Power capacitor & reactive power compensation, 2021, 42(3): 84-91.
[27] 邓聪, 江亚群, 黄纯. 基于不同次数谐波下品质因数一致性的孤岛检测方法[J]. 电力自动化设备, 2020, 40(12): 204-210, 224.
DENG C, JIANG Y Q, HUANG C.Islanding detection method based on consistency of quality factor under different harmonic orders[J]. Electric power automation equipment, 2020, 40(12): 204-210, 224.
[28] 任昭重. 基于并网点特征谐波测量的分布式发电孤岛检测研究[D]. 合肥: 安徽大学, 2015.
REN Z Z.Research on distributed generation islanding detection based on characteristic harmonic measurement of parallel nodes[D]. Hefei: Anhui University, 2015.
[29] IEEE1547.1—2005, IEEE Standard conformance test procedures for equipment interconnecting distributed resources with electric power systems[S].