Effect of the overshoot level in an alternative method for processing of tail chopped lightning impulses
نویسندگان
چکیده
The construction of new Ultra High Voltage laboratories requires more studies about standards for equipment as well as for testing and measurement techniques. Currently, the analysis of tail chopped lightning impulse waveforms is possible only by prior application of a full reference lightning impulse, creating difficulties for testing and processing of waveforms. A new method for evaluating the relevant parameters of tail chopped waveforms has been previously developed and this paper studies the effect of the overshoot in this alternative method.
منابع مشابه
Analysis of Full and Chopped Lightning Impulse Voltages from Transformer Tests Using the New K-factor Approach
The analysis of the lightning impulses is made graphical according to IEC 60060-1: 1989. A new algorithm has been proposed to analyse the parameters, front time, time to half, peak value, of full and chopped lightning impulses. The algorithm provides a procedure for obtaining the parameters of the impulse voltages from waveforms with varying degrees of distortions in the front part of the impul...
متن کاملA new adaptive exponential smoothing method for non-stationary time series with level shifts
Simple exponential smoothing (SES) methods are the most commonly used methods in forecasting and time series analysis. However, they are generally insensitive to non-stationary structural events such as level shifts, ramp shifts, and spikes or impulses. Similar to that of outliers in stationary time series, these non-stationary events will lead to increased level of errors in the forecasting pr...
متن کاملEffect of Processing of Sorghum Stover Based Diets on Performance, Values of Haematological and Biochemical Parameters and Immune Response in Growing Nellore Lamb
A complete diet (Total Mixed ration) with sorghum stover (40%) as sole roughage source was prepared and offered to animals under two forms: as mash or as expanded-extruded pellets (EEP). These two complete diets were compared with a conventional diet (ad libitum chopped sorghum stover fed separately with concentrate mixture to meet 80% of protein requirements). These three diets were randomly a...
متن کاملMeasuring Hospital Performance Using Mortality Rates: An Alternative to the RAMR
Background The risk-adjusted mortality rate (RAMR) is used widely by healthcare agencies to evaluate hospital performance. The RAMR is insensitive to case volume and requires a confidence interval for proper interpretation, which results in a hypothesis testing framework. Unfamiliarity with hypothesis testing can lead to erroneous interpretations by the public and other stakeholders. We argue t...
متن کاملRisk Assessment of Health Safety and Environmental of Samangan Combined Cycle Power Plant using FMEA&SAW Integrated Model
A power plant can be considered a workplace with a high level of risk.For this reason in order to ensure sustainable Performance in Power Plants risk management is essential. In this study the AHP method for Classification of risks And the FMEA method for risk Rating and SAW method was used to rank the risks. Finally, the ranking was done by FMEA&SAW method.According to the result s of the AHP...
متن کامل