Method for designing drop-of-wire recognition systems on sections of undistorted two-wire power transmission lines

Abstract

In this work a general statement of the problem of designing distributive electrical systems that recognize breakage of wires on sections of power lines using a multifunctional wire with an isolated residential wire is formulated. The use of overhead wires with the proposed construction of the housing will make it possible to solve many electrical problems very easily and cheaply without the use of expensive equipment. The correspondence table of the information current values of the power supply unit I 0 and of the wire breakdowns on the sections in the two-wire transmission line is obtained by simulation. The proposed method of diagnostics and monitoring of the state of power lines is not expensive and allows the maintenance staff, being at the substation, to detect rapidly and remotely the breakage of wires on the parts of the network and the distance to it, In order to ensure that the repair crew is sent to the exact location of the damage, this will improve the reliability of the electrical supply to consumers. This is achieved by the fact that the information wire has an independent power supply and thus allows for control of the network at any time.

Power Flows and Losses Calculation in Radial Networks by Representing the Network Topology in the Hierarchical Structure Form

“…Unlike [2,6,22], this work considers electrical networks with different nominal voltages, i.e., networks with two subnets: a subnetwork with nominal voltage U nom ≤ 35 kV and a subnetwork with U nom > 35 kV. To calculate the power flow of subnet with U nom > 35 kV a two-stage iterative method is used [11,21], where the "bottom-up" and "top-down" stages are repeated until the required calculation accuracy is obtained.…”

“…Therefore, in [2,6,22], a structured hierarchical-multilevel approach was applied when solving the following problems:…”