Measuring pollution level generated on electrical insulators after a strong storm

Prediction of critical flashover voltage of polluted insulators under sec and rain conditions using least squares support vector machines (LS-SVM)

“…Depending on the number of training data set either direct solvers can be used or an iterative solver such as conjugate gradients methods (for large data sets), in both cases with numerically reliable methods. In applications involving nonlinear regression it is enough to change the inner product of (x i ), (y i ) (7) by a kernel function and the ij th element of matrix K equals to (5) This leads to the following nonlinear regression function:…”

“…In these cases, the behavior of pollution level is very dynamic, coming to have in a same year highest and lowest pollution levels. Typical cases are the coasts [5]. A variety of prediction models have been proposed in the literature that include time-series models, regression models, artificial neural network (ANN) models, adaptive Neuro-fuzzy inference system (ANFIS) and support vector machine (SVM) models.…”

“…The application of genetic algorithms enables the definition of the arc constants, resulting also in the calculation of the critical conditions at the beginning of the pollution flashover mechanism. A mathematical model has been established, which simulates accurately the experimental results [1,[5][6][7]. A new method like SVMs has been introduced for pattern recognition and regression [2].…”

Study on the difference of chemical composition of insulator contamination on UHV‐AC and ‐DC transmission lines

“…It also shows the characteristics of insulator contamination are different at low altitude and heavily polluted environment. In addition, the insulator polluted level is easily influenced by weather, landform, pollution resources, and other factors [8][9][10]. The contamination characteristics of different types of insulators are different in natural environment [11,12].…”

Διερεύνηση Της Συμπεριφοράς Μονωτήρων Πορσελάνης Και Υλικών RTV SIR Σε Πραγματικές Και Εργαστηριακές Συνθήκες Με Μετρήσεις Του Ρεύματος Διαρροής

“…Έτσι σε ερευνητικό επίπεδο, η εξέλιξη των συσκευών προχώρησε προς την κατεύθυνση της αύξησης δυνατοτήτων όπως ο ρυθμός δειγματοληψίας, το ελάχιστο και το μέγιστο ανιχνευόμενο ρεύμα, η δυνατότητα καταγραφής της κυματομορφής του ρεύματος κτλ. Τέτοιες διατάξεις έχουν χρησιμοποιηθεί από πολλούς ερευνητές [225][226][227][228] .…”