A Simulator for Calculating Normal Induced Voltage on Communication Line

Abstract

-The current flowing through the overhead transmission lines causes induced voltage on the communication lines, which can be prevented by calculating the induced voltage at the planning stage for overhead transmission line installment through an agreement between the communication and electric power companies. The procedures to calculate the induced voltages, however, are complicated due to the variety of parameters and tower types of the overhead transmission lines. The difficulty necessitates the development of a simulator to measure the induced voltage on the communication lines. This paper presents two simulators developed for this purpose; one using the Data Base (DB) index method and the other using the Graphic User Interface (GUI) method. The simulators described in this paper have been implemented by the EMTP (Electromagnetic Transient Program).

Specificity of induced voltage calculation in the disconnected circuit of a double-circuit overhead transmission line

“…Объектом исследования выбрана двухцепная ВЛ 220 кВ. Первая цепь в работе (провода 1,2,3), вторая цепь выведена в ремонт (провода 4,5,6). Длина ВЛ 180 км, число опор 680, преобладающий тип опор 2П220-2-5,0.…”

“…При наличии большого числа неоднородных участков значительно усложняется расчет токов и напряжений в интересующих нас точках ВЛ. В работах [6,7] используется метод симметричных составляющих для определения магнитного влияния одной ВЛ на другую. Заземление в нескольких местах одной, двух или трех фаз на отключенной ВЛ рассматривают как соответствующие виды короткого замыкания, имеющего магнитную связь с действующей ВЛ.…”

Analysis of Induced Voltage on Pipeline Located Close to Parallel Distribution System

“…Energies 2021, 14, 8536 2 of 13 There are many reports on the electromagnetic interference (EM) of the induced voltage using the Electromagnetic Transient Program (EMTP) [14][15][16][17]. A practical calculation method using EMTP is presented in [14], which assumes multi-conductor power lines with a variety of tower types (complex approximation layouts), and multilayered soil models are parallel to a nearby pipeline.…”

“…A practical calculation method using EMTP is presented in [14], which assumes multi-conductor power lines with a variety of tower types (complex approximation layouts), and multilayered soil models are parallel to a nearby pipeline. Heo et al [15] analyzed the induced voltage generated by overhead transmission lines under normal cases using the line and cable constant (LCC) module. Isogai and Ametani [16] analyzed the effect of induced voltages to the pipeline on power lines.…”

“…Previous research on induced voltage is mainly focused on overhead transmission lines [8][9][10][11][12][13][14][15][16]. The induced voltage on the pipeline is critical because the unbalanced current flow in the distribution system can increase the induced voltage on the pipeline.…”