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首页> 外文期刊>IEEE Transactions on Industry Applications >Impacts of Grounding Configurations on Responses of Ground Protective Devices for DFIG-Based WECSs—Part II: High-Impedance Ground Faults
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Impacts of Grounding Configurations on Responses of Ground Protective Devices for DFIG-Based WECSs—Part II: High-Impedance Ground Faults

机译：接地配置对基于DFIG的WECS的接地保护装置响应的影响-第二部分：高阻接地故障

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摘要

Ground faults are among the major causes of disrupting the safe, secure, stable, and profitable operation of doubly fed induction generator (DFIG) based wind energy conversion systems (WECSs). On one hand, minimizing the possible damage in a DFIG-based WESC, caused by ground faults, requires accurate detection and fast response of ground protective devices. On the other hand, the responses of ground protective devices are highly dependent on ground currents and potentials, especially during high-impedance ground faults. This paper investigates the influences of grounding configurations on the responses of ground protective devices used in DFIG-based WECSs during high-impedance ground faults. Investigated influences are observed through the ability of ground protective devices, used in DFIG-based WECSs, to quickly and accurately respond to high-impedance ground faults for different grounding configurations. In this paper, the solid, low-resistance, high-resistance, and open grounding configurations are tested for DFIG-based WECS in order to establish comprehensive investigations. The results of the investigations show that the responses of ground protective devices vary depending on ground fault currents, which can have different levels due to the grounding configuration. Moreover, the results of the investigations reveal that the frequency-selective grounding configuration can offer a minimum impact on the responses of ground protective devices used in DFIG-based WECSs.
机译：接地故障是破坏基于双馈感应发电机（DFIG）的风能转换系统（WECS）的安全，稳定，稳定且有利可图的运行的主要原因之一。一方面，要最大程度地减少基于DFIG的WESC由接地故障引起的损坏，需要对接地保护设备进行准确检测和快速响应。另一方面，接地保护装置的响应高度依赖于接地电流和电位，尤其是在高阻抗接地故障期间。本文研究了在高阻抗接地故障期间，接地配置对基于DFIG的WECS中使用的接地保护设备的响应的影响。通过基于DFIG的WECS中使用的接地保护装置的能力，可以快速，准确地响应不同接地配置的高阻抗接地故障，从而观察到了调查的影响。在本文中，对基于DFIG的WECS进行了坚固，低电阻，高电阻和开放式接地配置的测试，以进行全面的研究。调查结果表明，接地保护设备的响应随接地故障电流而变化，由于接地配置的不同，接地电流可能具有不同的电平。此外，调查结果表明，频率选择性接地配置可以对基于DFIG的WECS中使用的接地保护设备的响应产生最小的影响。

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