Analysis of fulfillment of LVRT requirements under unbalanced operating conditions

机译：在不平衡的工作条件下分析LVRT要求的实现情况

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As the wind power penetration continues to increase, wind turbines are required to provide Low Voltage Ride-Through (LVRT) capability, thus new grid codes for wind turbines are established. Most grid codes provide the LVRT curve only for the connection to the transmission system. Only few of them include the distribution system and yet the measuring of the terminal voltage do not consider unbalanced operating conditions. This paper analyses the fulfillment of LVRT requirements under unbalanced voltage conditions for doubly-fed induction generator (DFIG) wind turbines connected to the distribution system. Three different terminal voltage measurement schemes are used and analyzed. The simulations are carried out in EMTP-RV software and the results indicate that for highly imbalanced systems all three phases must be independently analyzed.

机译：随着风力渗透率的不断提高，要求风力涡轮机提供低压穿越（LVRT）功能，因此建立了新的风力涡轮机电网规范。大多数电网代码仅提供LVRT曲线用于连接到传输系统。其中只有少数几个包括配电系统，但是端子电压的测量并未考虑不平衡的工作条件。本文分析了与配电系统连接的双馈感应发电机（DFIG）风力发电机在不平衡电压条件下LVRT要求的实现情况。使用和分析了三种不同的端子电压测量方案。仿真是在EMTP-RV软件中进行的，结果表明，对于高度不平衡的系统，必须独立分析所有三相。

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来源
《2016 IEEE PES Transmission amp; Distribution Conference and Exposition -Latin America》|2016年|1-6|共6页
会议地点 Morelia(MX)
作者
Rafael C. Borges; Rodrigo A. Ramos; Romeu Reginatto;
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作者单位

School of Engineering of Sao Carlos, University of Sao Paulo (USP), Sao Carlos, Brazil;

School of Engineering of Sao Carlos, University of Sao Paulo (USP), Sao Carlos, Brazil;

Center for Engineering and Exact Sciences, Western Paraná State University (UNIOESTE), Foz do Iguaçu, Brazil;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Voltage measurement; Generators; Wind turbines; Voltage control; Mathematical model; Load modeling; Voltage fluctuations;

机译：电压测量;发电机;风力发电机;电压控制;数学模型;负荷建模;电压波动;

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Analysis of fulfillment of LVRT requirements under unbalanced operating conditions

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