Software Techniques for Interactive Optimization of Complex Grounding Arrangements for Protection against Effects of Lightning
نویسندگان
چکیده
Paper describes application of recently developed software based on electromagnetic field theory approach to the analysis of high frequency and transient behavior of spacious and complex grounding systems. Examples of analysis are presented that illustrates possibilities of the utilization of such software in the grounding system design process, to optimize the grounding electrode arrangement for better high frequency and transient behavior.
منابع مشابه
Sensitivity Assessment of Lightning Protection Device Aging Effect on Distribution Substation Insulation
Insufficient electrical endurance of equipment and insulation failure against overvoltage is one of the most effective reasons for failure the power line. Lightening, switching or other disruptive parameters can cause line outage or distribution substation failure. There are different devices used to improve the safety, reliability, and power quality of the system. Surge arresters are one of t...
متن کاملبررسی جامع اضافه‌ولتاژهای صاعقه در مزارع بادی با پیکربندی‌های متفاوت به همراه تاثیر سیستم زمین
This paper is treated with major risks applied by lightning strikes to wind farms. The risks illustrated in this research include overvoltage caused by direct and indirect effects of lightning strikes on any components of wind farm. As demands for electrical energy throughout our world is increased more and more nowadays, wind power plants are extended in every possible locations correspondingl...
متن کاملBack-flashover Investigation of HV Transmission Lines Using Transient Modeling of the Grounding Systems
The article presents the transients analysis of the substation grounding systems and transmission line tower footing resistances which can affect to the back-flashover (BF) or overvoltage across insulator chain in an HV power systems by using EMTP-RV software. The related transient modeling of the grounding systems is based on a transmission line (TL) model with considering the soil ionization....
متن کاملEvaluating the High Frequency Behavior of the Modified Grounding Scheme in Wind Farms
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 a...
متن کاملارائۀ یک روش نوین به‌منظور مدل‌سازی جامع سیستم زمین دکل‌های فشار قوی و برج توربین‌های بادی با استفاده از روش برازش برداری
In the past, grounding systems usually were modeled by an individual Resistor. This estimation is useful only at low frequencies, while in high frequencies, the inductance of the grounding system plays the main role to identify the phase and amplitude of that. In recent years, as wind farms grow rapidly throughout the world, the grounding system and ground impedance of wind turbine towers under...
متن کامل