Study on half-wave and full-wave active power injection damping technology for photovoltaic power stations

doi:10.3969/j.issn.1674-1951.2021.09.004

Abstract

Abstract:

A half-wave and full-wave active power injection damping control method for photovoltaic power stations is proposed to suppress the low-frequency oscillation of the power systems. Based on the basic principle of half-wave and full-wave damping injection control for photovoltaic power stations,the low frequency oscillation of power system is suppressed under load shedding and maximum power tracking operation conditions of photovoltaic power station.A cascaded damping control composed of "gain,filtering and phase compensation" is put forward,and the design principles and value ranges of the main parameters are given.The influences of the control gain of half-wave and full-wave active power injection damping control branch,electrical distance between photovoltaic generator and traditional power supply and other parameters on damping effect are studied.Taking a four-machine two-area power system with photovoltaic generators as an example,the suppression effect of half-wave and full-wave active power injection damping control on power system frequency oscillation is studied.The control structure and parameter design principle proposed show good robustness when the oscillation frequency changes.

Key words: photovoltaic power station, low-frequency oscillation, damping control, half-wave active power injection, full-wave active power injection, structure of cascaded damping control

CLC Number:

TM715

WANG Zongheng, XIONG Hongtao, SHANG Lei. Study on half-wave and full-wave active power injection damping technology for photovoltaic power stations[J]. Huadian Technology, 2021, 43(9): 31-36.

Figures/Tables 13

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Tab.1

Fig.6

Tab.2

Fig.7

Fig.8

Tab.3

Fig.9

Tab.4

References 18

[1]	陈露洁, 徐式蕴, 孙华东, 等. 高比例电力电子电力系统宽频带振荡研究综述[J]. 中国电机工程学报, 2021, 41(7):2297-2310.
	CHEN Lujie, XU Shiyun, SUN Huadong, et al. A survey on wide-frequency oscillation for power systems with high penetration of power electronics[J]. Proceedings of the CSEE, 2021, 41(7):2297-2310.
[2]	高贺, 杨朋威, 石海鹏, 等. 一起光伏电站电压振荡事故分析和解决措施[J]. 东北电力技术, 2021, 42(2):39-43.
	GAO He, YANG Pengwei, SHI Haipeng, et al. Analysis and solution of voltage oscillation accident in PV power station[J]. Northeast Electric Power Technology, 2021, 42(2):39-43.
[3]	SHAH R, MITHULANANTHAN N, LEE K Y, et al. Large-scale PV plant with a robust controller considering power oscillation damping[J]. IEEE Transactions on Energy Conversion, 2013, 28(1):106-116. doi: 10.1109/TEC.2012.2230328
[4]	DU W J, WANG H F, XIAO L Y. Power system small‐signal stability as affected by grid‐connected photovoltaic generation[J]. European Transactions on Electrical Power, 2012, 22(5):688-703. doi: 10.1002/etep.v22.5
[5]	ZHANG Y, ZHU S Z, SPARKS R, et al. Impacts of solar PV generators on power system stability and voltage performance [C]// 2012 IEEE Power and Energy Society General Meeting, 2012, USA: San Diego.
[6]	SHAH R, NADARAJAH M, LEE K Y. Assessment and choice of input for wide-area damping controller in large-scale PV taking time delay into consideration [C]// Australasian Universities Power Engineering Conference(AUPEC), 2012, Indonesia: Bali.
[7]	唐震, 郝捷, 刘新元, 等. 光伏发电系统抑制电网机电振荡的机理与策略[J]. 电源学报, 2020, 18(2):113-121.
	TANG Zhen, HAO Jie, LIU Xinyuan, et al. Mechanism and strategy of electromechanical oscillation suppression for power grid by PV power generation system[J]. Journal of Power Supply, 2020, 18(2):113-121.
[8]	高本锋, 姚磊, 李忍, 等. 大规模光伏电站并网的振荡模式分析[J]. 电力自动化设备, 2017, 37(8):123-130.
	GAO Benfeng, YAO Lei, LI Ren, et al. Analysis on oscillation modes of large-scale grid-connected PV power plant[J]. Electric Power Automation Equipment, 2017, 37(8):123-130.
[9]	柴华, 张学军, 李明贤, 等. 光伏发电系统抑制电力系统功率振荡的机理[J]. 电网技术, 2021, 45(5):1809-1818.
	CHAI Hua, ZHANG Xuejun, LI Mingxian, et al. Mechanism for photovoltaic generation system suppressing power system oscillations[J]. Power System Technology, 2021, 45(5):1809-1818.
[10]	LI M X, XIONG L S, CHAI H, et al. Mechanism of PV generation system damping electromechanical oscillations [J/OL]. IEEE Access, 2020.（2020-07-23）[2021-08-20]. https://ieeexplore.ieee.org/document/9146562 .
[11]	付媛, 李浩, 张祥宇. 基于振荡状态反馈的直流微网储能换流器的有源阻尼控制技术[J]. 高电压技术, 2021, 47(3):927-937.
	FU Yuan, LI Hao, ZHANG Xiangyu. Active damping control of energy storage converter in DC microgrid based on oscillatory state feedback[J]. High Voltage Engineering, 2021, 47(3):927-937.
[12]	刘会强, 慕腾, 邢华栋, 等. 基于解耦自抗扰控制的光伏并网稳定研究及应用[J]. 华电技术, 2021, 43(8):11-19.
	LIU Huiqiang, MU Teng, XING Huadong, et al. Research on PV power grid connection stability based on decoupled active disturbance rejection control[J]. Huadian Technology, 2021, 43(8):11-19.
[13]	刘金豆, 成杰, 俞高伟. 基于低压直流配电网并网的并离网一体光储发电系统研究[J]. 华电技术, 2021, 43(4):63-70.
	LIU Jindou, CHENG Jie, YU Gaowei. Research on a PV-energy storage system with integration of grid-connection and disconnection modes based on low-pressure DC distribution network[J]. Huadian Technology, 2021, 43(4):63-70.
[14]	聂永辉, 李兵兵, 高磊, 等. 考虑饱和影响的电力系统广域阻尼控制器设计[J]. 电力自动化设备, 2020, 40(9):95-102.
	NIE Yonghui, LI Bingbing, GAO Lei, et al. Design of wide-area damping controller for power system considering saturation[J]. Electric Power Automation Equipment, 2020, 40(9):95-102.
[15]	周林, 任伟, 余希瑞. 大型光伏电站抑制低频振荡的有功阻尼控制策略[J]. 中国电机工程学报, 2016, 36(11):2987-2995.
	ZHOU Lin, REN Wei, YU Xirui. Active damping control strategy in the large-scale photovoltaic plants restraining low-frequency oscillations[J]. Proceedings of the CSEE, 2016, 36(11):2987-2995.
[16]	龙源, 李国杰, 程林, 等. 利用光伏发电系统抑制电网功率振荡的研究[J]. 电网技术, 2006(24):44-49.
	LONG Yuan, LI Guojie, CHENG Lin, et al. A study on damping power system oscillations based on photovoltaic system[J]. Power System Technology, 2006(24):44-49.
[17]	LI G J, RUAN S Y, CHOI S S. A photo-voltaic damping system for suppressing power system oscillation[C]// 2009 IEEE International Conference on Control and Automation. IEEE, 2009:1681-1686.
[18]	ABOUL-ELA M E, SALLAM A A, MCCALLEY J D, et al. Damping controller design for power system oscillations using global signals[J]. IEEE Transactions on Power Systems, 1996, 11(2):767-773. doi: 10.1109/59.496152

电气距离/km	阻尼比		变化量
电气距离/km	无阻尼控制	有功阻尼控制	变化量
1	0.054 6	0.070 9	0.016 3
30	0.059 8	0.072 2	0.013 8
60	0.065 7	0.074 3	0.008 6
80	0.071 7	0.079 9	0.008 2

场景	场景描述
1	光伏电站无阻尼控制
2	光伏电站附加储能,加入全波阻尼控制
3	光伏电站无储能、无备用,加入半波阻尼控制

场景	特征根	阻尼比
1	-0.241 1±4.958i	0.048 6
2	-0.288 9±4.908i	0.058 8
3	-0.276 2±4.952i	0.055 7

场景	特征根	振荡频率/Hz	阻尼比
1	-0.158±6.056i	0.964	0.026 1
2	-0.248±5.979i	0.952	0.041 4
3	-0.233±6.032i	0.961	0.038 7