Research on GSNSC Based Fault Ride Through Capability of Wind Power System

doi:10.16628/j.cnki.2095-8188.2022.09.004

Abstract

Abstract:

In order to improve the fault ride through capacity of wind power system,a nine-switch converter is adopted to replace the traditional grid side converter.Based on the theoretical analysis of the mathematical model,control strategy and zero-sequence component injection sinusoidal pulse width modulation strategy of grid side nine-switch converter (GSNSC),a simulation model of the system is established.The operation characteristics of GSNSC are analyzed in depth by simulating a variety of the grid connection point voltage fault conditions.GSNSC can flexibly inject compensation voltage into the power grid under the voltage fault condition to maintain the output voltage stability of the wind power system,and quickly inject reactive current into the power grid to realize the flexible fault crossing of the wind power system.The simulation results verify the effectiveness of GSNSC in improving the fault through capacity of wind power system.

Key words: grid side nine-switch converter (GSNSC), zero-sequence component injection, compensation voltage, reactive current

CLC Number:

TM614

CHEN Shuo, TANG Binwei, GUO Jiangtao, HUANG Liling. Research on GSNSC Based Fault Ride Through Capability of Wind Power System[J]. LOW VOLTAGE APPARATUS, 2022, 0(9): 26-31.

Figures/Tables 9

References 16

[1]	刘广忱, 王生铁, 张鸿, 等. 半直驱风电系统最大功率跟踪和变桨距集成控制[J]. 微特电机, 2012, 40(11):50-54.
[2]	王海鑫, 杨俊友, 李欣, 等. 电网故障下直驱永磁风力发电机组机侧变流器改进控制策略[J]. 可再生能源, 2015, 33(11):1632-1639.
[3]	杨艺云, 肖静, 张阁, 等. 永磁直驱风机低电压穿越协调控制策略[J]. 电气传动, 2017, 7(40):43-49.
[4]	刘忠义, 刘崇茹, 李庚银. 提高直驱永磁风机低电压穿越能力的功率协调控制方法[J]. 电力系统自动化, 2015, 39(3):23-29.
[5]	任永峰, 胡宏彬, 薛宇, 等. 基于卸荷电路和无功优先控制的永磁同步风力发电机组低电压穿越研究[J]. 高电压技术, 2016, 42(1):11-18.
[6]	赵静, 万瑞妮, 郭敏, 等. 电池储能系统在并网风电场运行中的协调控制研究[J]. 电器与能效管理技术, 2020(10):71-76.
[7]	王树军, 刘健, 赵国良, 等. 用于提高双馈风力机低电压穿越能力的超级电容储能容量配置及控制策略研究[J]. 电器与能效管理技术, 2019(9):65-70.
[8]	任永峰, 孙伟, 韩俊飞, 等. 采用全钒液流电池储能的UDVR提升DFIG-LVRT能力研究[J]. 高电压技术, 2015, 41(10):3185-3192.
[9]	HEYDARI M, VARJANI A Y, MOHAMADIAN M, et al. A novel variable-speed wind energy system using permanent-magnet synchronous generator and nine-switch AC/AC converter:2011 2nd Power Electronics,Drive Systems & Technologies Conference[C]. 2011.
[10]	KIRAKOSYAN A, MOURSI M, KANJIYA P, et al. A nine switch converter-based fault ride through topology for wind turbine applications[J]. IEEE Transactions on Power Delivery, 2016, 31(4):1757-1766. doi: 10.1109/TPWRD.2016.2547942
[11]	AMBATI B B, KANJIYA P, KHADKIKAR V. A low component count Series voltage compensation scheme for DFIG WTs to enhance fault ride-through capability[J]. IEEE Transactions on Energy Conversion, 2015, 30(1):208-217. doi: 10.1109/TEC.2014.2351799
[12]	任永峰, 云平平, 薛宇, 等. NSC改善DFIG电能质量与故障穿越研究[J]. 中国电机工程学报, 2018, 38(17):5052-5062,5302.
[13]	LOUIS J R, SHANMUGHAM S, JEROME J. Encompassing nine switch converter approach in wind-hydro hybrid power system feeding three phase three wire dynamic loads[J]. International Journal of Electrical Power & Energy Systems, 2016(79):66-74.
[14]	李楠, 高峰, 田昊, 等. 九开关变换器脉宽调制策略[J]. 电力系统自动化, 2014, 38(3):83-88.
[15]	田昊, 高峰, 李楠. 九开关变换器无死区调制策略[J]. 电工技术学报, 2013, 28(12):215-221.
[16]	JARUTUS N, KUMSUWAN Y. A Carrier-based Phase-shift Space Vector Modulation Strategy for a Nine-switch Inverter[J]. IEEE Transactions on Power Electronics, 2017, 32(5):3425-3441. doi: 10.1109/TPEL.2016.2587811

名称	参数
风机额定容量/MW	4
机组额定电流/A	4 211
额定风速/(m·s^-1)	11.4
齿轮箱传动比	21
PMSG直轴电感/mH	0.2
PMSG交轴电感/mH	0.5
定子电压/V	690
直流侧电压/V	2 400

工况	响应时间/ms	无功电流值/p.u.	与理论偏差/p.u
3ph20FL	15	1.119	0.001
3ph35FL	12	0.880	0
3ph50FL	14	0.639	0.001
3ph75FL	13	0.240	0
3ph90FL	11	0.032	0
3ph120FL	12	0.160	0
3ph125FL	15	0.238	0.002
3ph130FL	15	0.319	0.001