Equivalent modeling of LVRT and current limiting links for distributed photovoltaic and wind turbine generators

被引：0
|
作者：
Chen H. [1 ]
Pan X. [1 ]
Huang H. [2 ]
Sun X. [1 ]
He D. [1 ]
Yong C. [1 ]
机构：
[1] College of Energy and Electrical Engineering, Hohai University, Nanjing
[2] School of Electrical Engineering, Nanjing Institute of Technology, Nanjing
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2022年 / 42卷 / 07期
基金：
中国国家自然科学基金;
关键词：
active distribution network; distributed new energy units; dynamic characteristics; equivalent modeling; low voltage ride-through; nonlinear links;
D O I：
10.16081/j.epae.202205063
中图分类号：
学科分类号：
摘要：
With the increasing integration of distributed new energy units，the dynamic characteristics of power load have significantly changed，it is necessary to study a new equivalent modeling method for active distribution networks. The types of distributed new energy units in the active distribution network are diversified，and the controller has nonlinear links such as switching and limiting. For this reason，with the common characteristics of model structure of doubly-fed induction generator-based wind turbines，direct drive permanent magnet synchronous generator-based wind turbines，and photovoltaic generation，a general model of distributed new energy units is constructed. On this basis，a new non-mechanistic equivalent modeling method for nonlinear links under effect of multi-excitations is proposed，and the results are verified by a simple simulation example. An actual active distribution network is simulated and the results demonstrate that when combines the equivalent model and the classical load model in paralleled，it can accurately describe the dynamic characteristics of the active distribution network considering LVRT（Low Voltage Ride-Through）and current limiting links of the distributed new energy units. © 2022 Electric Power Automation Equipment Press. All rights reserved.
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页码：25 / 32+39
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