Analytical Surveys of Transient and Frequency-Dependent Grounding Characteristics of a Wind Turbine Generator System on the Basis of Field Tests

Yamamoto, Kazuo; Yanagawa, Shunichi; Yamabuki, Koichi; Sekioka, Shozo; Yokoyama, Shigeru

doi:10.1109/tpwrd.2010.2043748

Cited by 93 publications

(26 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Only a few papers on applications to WT-LPS have been reported since the start of 2000. Yamamoto investigated the state of surge propagation in a wind turbine including blades, down-conductors, the nacelle, the tower, and an earthing system, comparing actual measurements using a downsized WT model and FDTD calculations (Yamamoto 2009, Yamamoto 2010). An investigation group of Doshisha University, Japan, calculated the surge propagation from a turbine when struck by lightning, to another turbine via a buried interconnecting earthing wire (Nagao 2009).…”

Section: Applications Of the Fdtd Methods For Lightning Protection Of mentioning

confidence: 99%

Electromagnetic Calculation of a Wind Turbine Earthing System

Yasuda¹,

Fujii²

2011

Wind Turbines

View full text Add to dashboard Cite

Section: Applications Of the Fdtd Methods For Lightning Protection Of mentioning

confidence: 99%

Electromagnetic Calculation of a Wind Turbine Earthing System

Yasuda¹,

Fujii²

2011

Wind Turbines

View full text Add to dashboard Cite

“…A hybrid model based on circuit theory and the method of moments is another approach to increasing the reliability of the grounding system in a frequency domain [17]. The method presented in [18] is based on measuring and analyzing the Ground Potential Rise (GPR) around a wind turbine caused by different types of lightning strikes. The important parts of the simulated wind turbine grounding system are grounding mesh and foundation feet.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the High Frequency Behavior of the Modified Grounding Scheme in Wind Farms

et al. 2017

View full text Add to dashboard Cite

Wind generators are exposed to numerous destructive forces such as lightning and are therefore vulnerable to these phenomena. To evaluate the transient behavior of a wind power plant during direct and indirect strikes, modeling of all relevant components is required. Among the protective and control components of wind turbines, the grounding system is the most important element for protection against lightning strikes. This paper examines the impact of nonlinear soil ionization behavior and frequency dependency on a wind turbine in order to model a sufficient protection scheme to reduce overvoltage and make the system tolerable against transitions. The high frequency models of other equipment such as transformers, horizontal conductors, vertical rods, surge arresters and underground cables must also be taken into account to design the grounding system. Our Proposed Modified Grounding Scheme (PMGS) is to reduce the maximum transient overvoltages. We simulate the model in a restructured version of the Electromagnetic Transient Program (EMTP-RV) software to examine the effectiveness of the system. We then apply the simulated results to pair of turbines that are interconnected with a frequency-dependent cable. We carry out the simulation for direct and indirect lightning strikes. The results indicate that the MGS can lead to considerably more than a 50% reduction in transient voltages for lightning and thus leads to more reliable networks.

show abstract

“…In order to solve these problems, it is necessary to clarify the transient grounding characteristics of wind turbine generator systems [5,6] and the shunt lightning current flowing inside and outside the wind turbine generator systems.…”

Section: Introductionmentioning

confidence: 99%