Автоматизація процесу пошуку пошкоджень в електричних мережах з повітряними лініями електропередачі напругою 10 кВ

Abstract

The essence of solving the problem is to automate the process of determining the location of damage (VMP) and increasing accuracy based on the combined use of static and dynamic characteristics of normal and emergency modes of the SEP. The dynamic characteristics of the emergency mode were studied and the existing methods and means of emergency response were analyzed. More accurate methods of calculating the primary parameters of overhead power lines (PL) and loads of individual 6-10/0.4 kV TPs are proposed. The remote method of determining the location of an interphase short circuit in overhead power lines with a voltage of 10 kV has been improved, taking into account their heterogeneity and structural ramifications, which allows to increase the accuracy of VMP. The remote method of determining the location of a single-phase ground fault, taking into account the heterogeneity and structural branching of the PL, has received further development, according to which the location of the damage is determined even in the presence of significant transient resistance. The system for remote determination of the location of phase-to-phase short-circuit or single-phase to ground fault provides an absolute accuracy of 5% of the total length of the trunk line for lines not exceeding 20 km in length.