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1.天津大学电气自动化与信息工程学院,天津市 300072
2.国网山东综合能源服务有限公司,山东省济南市 250021
3.国网山东省电力公司济宁供电公司,山东省济宁市 272113
何晋伟(1983—),男,通信作者,博士,教授,博士生导师,东南大学电气工程学院2001级校友,主要研究方向:微电网、分布式发电、电能质量、大功率电力电子变流器技术。E-mail:jinwei.he@tju.edu.cn
王坤放(1998—),男,硕士研究生,主要研究方向:大功率电流源变流器技术。E-mail:kf_wang@tju.edu.cn
王瑞琪(1986—),男,高级工程师,主要研究方向:综合能源技术、清洁能源技术、双碳节能技术。E-mail:13698622826@163.com
收稿:2023-07-27,
修回:2023-10-27,
网络出版:2023-11-10,
纸质出版:2023-12-10
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何晋伟,王坤放,王瑞琪等.电流源-电压源变流器混合并联独立供电系统的分布式功率控制[J].电力系统自动化,2023,47(23):12-22.
HE Jinwei,WANG Kunfang,WANG Ruiqi,et al.Distributed Power Control for Hybrid Parallel Independent Power Supply System with Current Source and Voltage Source Converters[J].Automation of Electric Power Systems,2023,47(23):12-22.
何晋伟,王坤放,王瑞琪等.电流源-电压源变流器混合并联独立供电系统的分布式功率控制[J].电力系统自动化,2023,47(23):12-22. DOI: 10.7500/AEPS20230727010.
HE Jinwei,WANG Kunfang,WANG Ruiqi,et al.Distributed Power Control for Hybrid Parallel Independent Power Supply System with Current Source and Voltage Source Converters[J].Automation of Electric Power Systems,2023,47(23):12-22. DOI: 10.7500/AEPS20230727010.
针对电流源型变流器和电压源型变流器共同支撑的混合型独立微电网,提出了一种适用于电流源-电压源变流器混合系统支撑独立微电网功率控制的新型下垂控制策略。其中,电压源型变流器仍采用传统的
P
-
f
、
Q
-
V
下垂控制,而电流源型变流器通过虚拟电流矢量在电压定向轴方向的投影来模拟有功电流的大小;无功电流是基于电压源无功下垂控制的对偶性,结合
dq
轴物理量之间的耦合特性,通过
d
轴电压计算得到,在不需要检测无功功率的基础上实现了无功功率的分布式控制。电流源仅通过电流环路便可实现和电压源之间合理的功率分配。通过建立小信号模型,对系统的稳定性进行了分析。最后,通过仿真验证了所提控制策略和参数设计的有效性。
Aiming at the hybrid independent microgrid supported by current source and voltage source converters
a novel droop control strategy is proposed
which is suitable for the power control of independent microgrids supported by hybrid systems with current source and voltage source converters. Among them
the voltage source converter still adopts traditional
P
-
f
and
Q
-
V
droop control
while the current source converter simulates the magnitude of active current by projecting a virtual current vector in the voltage directional axis direction. Based on the duality of voltage source reactive power droop control
combined with the coupling characteristics between
dq
-axis physical quantities
the reactive current is calculated by
d
-axis voltage
which realizes the distributed control of reactive power without detecting reactive power. The current source can realize reasonable power distribution with the voltage source only through the current loop. The stability of the system is analyzed by establishing a small-signal model. Finally
the effectiveness of the control strategy and parameter design proposed in this paper is verified through simulations.
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