双馈风机附加频率控制对系统调频动态的影响

doi:10.12204/j.issn.1000-7229.2021.10.010

电力建设 ›› 2021, Vol. 42 ›› Issue (10): 89-100.doi: 10.12204/j.issn.1000-7229.2021.10.010

双馈风机附加频率控制对系统调频动态的影响

张政¹, 彭晓涛¹(), 李少林², 梁恺¹, 许饶琪¹, 张锐³

1.武汉大学电气与自动化学院,武汉市430072
2.中国电力科学研究院有限公司,北京市 100192
3.合肥阳光智维科技有限公司,合肥市 230088

收稿日期:2021-01-31 出版日期:2021-10-01 发布日期:2021-09-30
通讯作者: 彭晓涛 E-mail:pengxiaotao@whu.edu.cn
作者简介:张政(1996),男,硕士研究生,主要研究方向为新能源并网的控制与优化。
李少林(1984),男,高级工程师,主要研究方向为风力发电系统并网仿真与试验检测技术、电力电子与电力传动。
梁恺(1996),男,硕士研究生,主要研究方向为新能源并网电力系统运行与控制。
许饶琪(1998),男,硕士研究生,主要研究方向为新能源并网电力系统运行与控制。
张锐(1991),男,工程师,主要研究方向为新能源电站智慧运维技术。
基金资助:
国家重点研发计划资助(2018YFB0904000)

Influence of Additional Frequency Control of DFIG on Frequency-Regulation Dynamic Characteristics of Power System

ZHANG Zheng¹, PENG Xiaotao¹(), LI Shaolin², LIANG Kai¹, XU Raoqi¹, ZHANG Rui³

1. School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
2. China Electric Power Research Institute, Beijing 100192, China
3. Sungrow Hefei Smart Maintenance Technology, Hefei 230088, China

Received:2021-01-31 Online:2021-10-01 Published:2021-09-30
Contact: PENG Xiaotao E-mail:pengxiaotao@whu.edu.cn
Supported by:
National Key R&D Program of China(2018YFB0904000)

摘要/Abstract

摘要：

针对双馈风机附加频率控制对系统调频动态特性产生的影响,通过建立双馈风机多物理控制环节耦合特性数学模型、互联电力系统考虑风机接入的负荷-频率控制动态特性数学模型,以风机采用惯性支撑与下垂控制结合的附加频率控制为研究对象,利用小干扰稳定分析研究了风机参与系统调频的动态特性,以及各控制环节的运动模态耦合特性。分析结果表明,双馈风机附加频率控制对系统调频动态的小干扰稳定性不会产生明显影响,但惯量支撑控制使系统的调频动态增加一种模态,并使负荷-频率控制的调频动态环节与风机的多物理控制环节在部分振荡和非振荡模态上发生耦合作用。进一步利用阻尼比和振荡频率研究了附加频率控制参数对振荡模态动态特性的影响,并通过时域仿真验证了理论分析的合理性。

关键词: 双馈风电机组(DFIG), 频率支撑, 小干扰稳定, 特征值分析, 调频动态

Abstract:

In response to the fact that additional frequency control of doubly-fed induction generator (DFIG) in wind farms can have an impact on the frequency-regulation dynamic characteristics of power system. By developing the mathematical model of the coupling characteristics of multi-physical control links of DFIG, and the mathematical model of the dynamic characteristics of load-frequency control of interconnected power system considering DFIG access, taking the frequency-support control strategy with a combination of inertial support and droop control for wind power as the object of study, the dynamic characteristics of the DFIG involving the load-frequency control of the interconnected system using frequency support and the motion-mode coupling characteristics of the physical control link are investigated using small disturbance stability analysis. The analysis results show that the additional frequency control of DFIG does not significantly affect the small-disturbance stability of the system frequency-regulation dynamics. However, the inertia support control adds one more mode to the frequency-regulation dynamic characteristics of the power system, and results in the coupling of the frequency-regulation dynamic link of load-frequency control with the multiphysics control link of DFIG on partial oscillation and non-oscillation modes. The effects of additional frequency-control parameters on the dynamic characteristics of the oscillating modes are further investigated using damping ratio and oscillation frequency, and the rationality of the theoretical analysis is verified by time-domain simulation.

Key words: doubly-fed induction generator (DFIG), frequency support, small-disturbance stability, eigenvalue analysis, frequency-regulation dynamics

中图分类号:

TM614

张政, 彭晓涛, 李少林, 梁恺, 许饶琪, 张锐. 双馈风机附加频率控制对系统调频动态的影响[J]. 电力建设, 2021, 42(10): 89-100.

ZHANG Zheng, PENG Xiaotao, LI Shaolin, LIANG Kai, XU Raoqi, ZHANG Rui. Influence of Additional Frequency Control of DFIG on Frequency-Regulation Dynamic Characteristics of Power System[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(10): 89-100.

图/表 18

图1 双馈风电机组结构图

Fig.1 Structure diagram of a DFIG-WT

图2 双馈风电机组附加频率控制原理图

Fig.2 Additional frequency control scheme of DFIG-WT

图3 含风电互联电力系统调频控制原理图

Fig.3 Frequency-regulation scheme of interconnected power system with wind power generator

表1 无附加频率控制时系统调频动态的状态变量

Table 1 State variables of power system frequency-regulation dynamic without additional frequency-support control

表2 无附加频率控制时系统调频动态的模态分析结果

Table 2 Modal analysis results of frequency-regulation dynamic of power system without additional frequency control

图4 振荡模态参与因子分析

Fig.4 Participation factor analysis of oscillation modes

表3 非振荡模态的参与因子分析结果

Table 3 Participation factor analysis of non-oscillation modes

表4 DFIG各组成环节对系统调频动态耦合作用的情况对比

Table 4 Comparison of the dynamic coupling effect of each DFIG component on the system frequency regulation

图5 DFIG-WT采用附加频率控制前后的系统频率响应

Fig.5 System frequency response when DFIG-WT with or without additional frequency control

图6 DFIG-WT采用附加频率控前后的有功输出

Fig.6 Output power of DFIG-WT with or without additional frequency control

表5 有附加频率控制时系统调频动态的模态分析

Table 5 Mode analysis results of frequency-regulation dynamic of power system with additional frequency control

图7 λ31、 λ7,8和λ17的参与因子分析

Fig.7 Participation factor analysis of λ31, λ7,8 and λ17

图8 临界稳定附近的模态阻尼比和振荡频率变化

Fig.8 Modal damping ratio and oscillation frequency variation near critical stability

图9 λ1-14振荡频率和阻尼比随kd的变化

Fig.9 Affection of oscillation frequency and damping ratio of λ1-14 with kd change

图10 部分非振荡模态特征值随kd的变化

Fig.10 Affection of eigenvalues of part of non-oscillation modes with kd change

图11 λ1-14振荡频率和阻尼比随kp的变化

Fig.11 Affection of oscillation frequency and damping ratio of λ1-14with kp change

图12 部分非振荡模态特征值随kp的变化

Fig.12 Affection of eigenvalues of part of non-oscillation modes with kp change

图13 风机输出功率动态响应

Fig.13 Dynamic response of the output of DFIG

参考文献 21

[1]	刘巨, 姚伟, 文劲宇, 等. 大规模风电参与系统频率调整的技术展望[J]. 电网技术, 2014, 38(3): 638-646.
	LIU Ju, YAO Wei, WEN Jinyu, et al. Prospect of technology for large-scale wind farm participating into power grid frequency regulation[J]. Power System Technology, 2014, 38(3): 638-646.
[2]	文云峰, 杨伟峰, 林晓煌. 低惯量电力系统频率稳定分析与控制研究综述及展望[J]. 电力自动化设备, 2020, 40(9): 211-222.
	WEN Yunfeng, YANG Weifeng, LIN Xiaohuang. Review and prospect of frequency stability analysis and control of low-inertia power systems[J]. Electric Power Automation Equipment, 2020, 40(9): 211-222.
[3]	彭晓涛, 贾继超, 周际城, 等. 优化风电惯性响应的变比例系数调速策略[J]. 中国电机工程学报, 2018, 38(19): 5625-5635.
	PENG Xiaotao, JIA Jichao, ZHOU Jicheng, et al. Speed regulation strategy based on variable proportion coefficient for optimizing inertial response of wind generator[J]. Proceedings of the CSEE, 2018, 38(19): 5625-5635.
[4]	FU Y, WANG Y, ZHANG X Y. Integrated wind turbine controller with virtual inertia and primary frequency responses for grid dynamic frequency support[J]. IET Renewable Power Generation, 2017, 11(8): 1129-1137. doi: 10.1049/iet-rpg.2016.0465 URL
[5]	林清明, 胡旭, 边晓燕, 等. 基于尾流效应的海上风电场多机等值调频控制[J]. 电力建设, 2018, 39(2): 116-123.
	LIN Qingming, HU Xu, BIAN Xiaoyan, et al. Multi-turbine equivalent frequency control considering wake effect of offshore wind farms[J]. Electric Power Construction, 2018, 39(2): 116-123.
[6]	王哲. 惯量可控发电机组对电力系统动态特性影响分析[D]. 北京: 华北电力大学(北京), 2019.
	WANG Zhe. Dynamic characteristics analysis of power system with controllable inertia generators[D]. Beijing: North China Electric Power University, 2019.
[7]	徐筱倩, 黄林彬, 汪震, 等. 双馈风电机组虚拟惯量控制对电力系统机电振荡的影响分析[J]. 电力系统自动化, 2019, 43(12): 11-17.
	XU Xiaoqian, HUANG Linbin, WANG Zhen, et al. Analysis on impact of virtual inertia control of DFIG-based wind turbine on electromechanical oscillation of power system[J]. Automation of Electric Power Systems, 2019, 43(12): 11-17.
[8]	潘尔生, 王智冬, 王栋, 等. 基于锁相环同步控制的双馈风机弱电网接入稳定性分析[J]. 高电压技术, 2020, 46(1): 170-178.
	PAN Ersheng, WANG Zhidong, WANG Dong, et al. Stability analysis of phase-locked loop synchronized DFIGs in weak grids[J]. High Voltage Engineering, 2020, 46(1): 170-178.
[9]	ARANI M F M, EL-SAADANY E F. Implementing virtual inertia in DFIG-based wind power generation[J]. IEEE Transactions on Power Systems, 2013, 28(2): 1373-1384. doi: 10.1109/TPWRS.2012.2207972 URL
[10]	王清, 薛安成, 张晓佳, 等. 双馈风机下垂控制对系统小扰动功角稳定的影响机理分析[J]. 电网技术, 2017, 41(4): 1091-1099.
	WANG Qing, XUE Ancheng, ZHANG Xiaojia, et al. Mechanism analysis of droop control of DFIG influence on system small-signal dynamic stability based on damping torque analysis[J]. Power System Technology, 2017, 41(4): 1091-1099.
[11]	石佳莹, 沈沉, 刘锋. 双馈风电机组动力学特性对电力系统小干扰稳定的影响分析[J]. 电力系统自动化, 2013, 37(18): 7-13.
	SHI Jiaying, SHEN Chen, LIU Feng. Analysis on impact of DFIG wind turbines dynamic characteristics on power system small signal stability[J]. Automation of Electric Power Systems, 2013, 37(18): 7-13.
[12]	陈润泽, 吴文传, 孙宏斌, 等. 双馈风电机组惯量控制对系统小干扰稳定的影响[J]. 电力系统自动化, 2014, 38(23): 6-12.
	CHEN Runze, WU Wenchuan, SUN Hongbin, et al. Impact of inertia control of DFIG wind turbines on system small-signal stability[J]. Automation of Electric Power Systems, 2014, 38(23): 6-12.
[13]	马静, 李益楠, 邱扬, 等. 双馈风电机组虚拟惯量控制对系统小干扰稳定性的影响[J]. 电力系统自动化, 2016, 40(16): 1-7.
	MA Jing, LI Yinan, QIU Yang, et al. Impact of virtual inertia control of DFIG wind turbines on system small-signal stability[J]. Automation of Electric Power Systems, 2016, 40(16): 1-7.
[14]	王旭斌, 杜文娟, 王海风. 考虑锁相环动态的直驱风电机组虚拟惯性控制对电力系统小干扰稳定性影响[J]. 中国电机工程学报, 2018, 38(8): 2239-2252.
	WANG Xubin, DU Wenjuan, WANG Haifeng. Small-signal stability of power systems as affected by D-PMSG virtual inertia control considering PLL dynamics[J]. Proceedings of the CSEE, 2018, 38(8): 2239-2252.
[15]	李军军, 吴政球. 风电参与一次调频的小扰动稳定性分析[J]. 中国电机工程学报, 2011, 31(13): 1-9.
	LI Junjun, WU Zhengqiu. Small signal stability analysis of wind power generation participating in primary frequency regulation[J]. Proceedings of the CSEE, 2011, 31(13): 1-9.
[16]	赵书强, 李忍, 高本锋, 等. 双馈风电机组经串补并网的振荡模式分析[J]. 高电压技术, 2016, 42(10): 3263-3273.
	ZHAO Shuqiang, LI Ren, GAO Benfeng, et al. Modal analysis of doubly-fed induction generator integrated to compensated grid[J]. High Voltage Engineering, 2016, 42(10): 3263-3273.
[17]	王瑞琳. 风力发电机与电网之间扭振相互作用的研究[D]. 上海: 上海交通大学, 2012.
	WANG Ruilin. The study of torsional vibration between wind turbines and grid[D]. Shanghai: Shanghai Jiaotong University, 2012.
[18]	FAN L L, KAVASSERI R, MIAO Z L, et al. Modeling of DFIG-based wind farms for SSR analysis[J]. IEEE Transactions on Power Delivery, 2010, 25(4): 2073-2082. doi: 10.1109/TPWRD.2010.2050912 URL
[19]	尹明, 李庚银, 周明, 等. 双馈感应风力发电机组动态模型的分析与比较(英文)[J]. 电力系统自动化, 2006, 30(13):22-27.
	YIN Ming, LI Gengyin, ZHOU Ming, et al. Analysis and comparison of dynamic models for the doubly fed induction generator wind turbine[J]. Automation of Electric Power Systems, 2006, 30(13): 22-27.
[20]	刘东霖. 双馈风力发电机频率控制及小干扰稳定性分析[D]. 成都: 西南交通大学, 2016.
	LIU Donglin. The frequency regulation of doubly-fed induction generator and its impacts on small signal stability[D]. Chengdu: Southwest Jiaotong University, 2016.
[21]	苏勋文, 米增强, 王毅. 风电场常用等值方法的适用性及其改进研究[J]. 电网技术, 2010, 34(6): 175-180.
	SU Xunwen, MI Zengqiang, WANG Yi. Applicability and improvement of common-used equivalent methods for wind farms[J]. Power System Technology, 2010, 34(6): 175-180.

双馈风机附加频率控制对系统调频动态的影响

Influence of Additional Frequency Control of DFIG on Frequency-Regulation Dynamic Characteristics of Power System

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