光伏电站半波与全波有功注入阻尼技术研究

doi:10.3969/j.issn.1674-1951.2021.09.004

华电技术 ›› 2021, Vol. 43 ›› Issue (9): 31-36.doi: 10.3969/j.issn.1674-1951.2021.09.004

光伏电站半波与全波有功注入阻尼技术研究

汪宗恒¹, 熊鸿韬², 尚磊³^,^*()

1.青海大学 a.水利电力学院;b.新能源光伏产业研究中心,西宁 810016
2.国网青海省电力公司,西宁 810008
3.武汉大学电气与自动化学院,武汉 430072

收稿日期:2021-08-20 修回日期:2021-08-31 出版日期:2021-09-25
通讯作者: * 尚磊（1986—）,男,辽宁海城人,讲师,博士,从事新能源发电技术、配电网与微电网技术方面的研究工作（E-mail： shanglei@whu.edu.cn）。
作者简介:汪宗恒（1985—）,男,浙江开化人,高级工程师,从事电力系统稳定控制方面的研究工作。
熊鸿韬（1984—）,男,湖北嘉鱼人,高级工程师,工学硕士,从事电力系统网源协调及励磁控制方面的研究工作。
基金资助:
杭州意能电力技术有限公司科技项目(HZYN-2021-0014-308)

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

WANG Zongheng¹, XIONG Hongtao², SHANG Lei³^,^*()

1. a.School of Water Resources and Electric Power;b.New Energy （Photovoltaic） Industry Research Center,New Energy （Photovoltaic） Industry Research Center,Qinghai University,Xining 810016,China
2. State Grid Qinghai Electric Power Company,Xining 810008,China
3. School of Electrical and Automation,Wuhan University,Wuhan 430072,China

Received:2021-08-20 Revised:2021-08-31 Published:2021-09-25

摘要/Abstract

摘要：

提出一种光伏发电系统半波与全波有功注入阻尼控制方法,以抑制电力系统低频振荡。介绍了光伏电站半波与全波阻尼注入控制的基本原理,在光伏电站减载和最大功率跟踪运行工况下抑制电力系统低频振荡,提出“增益+滤波+相位补偿”的链式阻尼控制结构,并给出各主要参数的设计原则和取值范围。研究了半波与全波有功注入阻尼控制支路控制增益、光伏与传统电源的电气距离等参数对阻尼效果的影响机理和规律。以含光伏发电的2区4机系统为例,研究半波与全波有功注入阻尼控制对电力系统频率振荡的抑制效果,当振荡频率变化时,系统的控制结构和参数设计原则具有良好的鲁棒性。

关键词: 光伏电站, 低频振荡, 阻尼控制, 半波有功注入, 全波有功注入, 链式阻尼控制结构

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

中图分类号:

TM715

汪宗恒, 熊鸿韬, 尚磊. 光伏电站半波与全波有功注入阻尼技术研究[J]. 华电技术, 2021, 43(9): 31-36.

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.

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参考文献 18

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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

光伏电站半波与全波有功注入阻尼技术研究

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

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