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CDegs2010加拿大学习.rar （18个子文件）

CDegs2010加拿大学习

SESENVIRO_UG2004.pdf 788KB

ModernComputation.pdf 1.11MB

MultiFields_Vs_ROW.pdf 131KB

150_Application of the Electromagnetic Field Method To Study A Communication Satellite Site Damaged By Lightning.pdf 851KB

SESTLC_UG2004.pdf 2.34MB

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2009 CDEGS UG Meeting Minutes.pdf 232KB

171_Application of Electromagnetic Field Theory to Measure Correct Grounding System Impedance.pdf 375KB

178_Steel Casing Overheating Analysis of Operating Power Pipe-Type Cables.pdf 1.13MB

Comparison_TLC_ROW_HIFREQ.pdf 1.01MB

156_Theory of Mag-Simple.pdf 481KB

User2000_A.pdf 1.39MB

164_Accurate Simulation of AC Interference Caused by Electrical Power Lines_A Parametric Analysis.pdf 1MB

CDEGS CONSTITUTION (Revised 6-18-09).pdf 133KB

SES-AGD[1].pdf 1.64MB

AutoTransient_UG2004.pdf 1016KB

179_Integrated Method in Electromagnetic Interference Studies.pdf 881KB

LowHighFreqGrounding.pdf 1.15MB

4 – Using SESTLC: A Simplified AC Induction and Field Calculation Program

4 Using SESTLC: A Simplified AC Induction and Field Calculation

Program

Dr. Jinxi Ma, Dr. Yixin Yang, Zhiqiong Luo and Sharon Tee

4.1 Introduction

The TLC software package is a Transmission (and distribution) Line Calculator for rapid EMF, line

parameter, and induced voltage estimates. It can be used to quickly estimate line parameters, electric fields,

and magnetic fields associated with arbitrary configurations of parallel transmission and distribution lines. It

also estimates induced voltages and currents on other parallel metallic utilities, such as pipelines and railways.

TLC has been designed with simplicity in mind, providing much useful information with minimal data entry,

when applied to simple system configurations. This can be very helpful for preliminary analyses of more

complex systems. Keep in mind that for more complex systems or more detailed studies, the Right-of-Way

software package or the HIFREQ engineering module are recommended.

The main functions of TLC are summarized as follows:

(1) Line parameter calculation;

(2) Electric field calculation;

(3) Magnetic field calculation;

(4) Steady-state condition inductive interference calculation;

(5) Fault condition inductive interference calculation.

A typical example is given below to demonstrate how to use SESTLC to compute various quantities

mentioned above.

4.2 A Typical Example

Figure 4-1 shows a typical configuration of a transmission system with a pipeline (refered to as the victim

line in TLC instead of pipeline because it can be a communication line or a rail) parallel to the transmission

line. The parallel length of the pipeline with the transmission line is 10 km. Both the left and right continuous

lengths are 5 km. The cross section of the transmission line and pipeline configuration is illustrated in Figure

4-2. Each of the phase wires consists of four solid copper conductors bundled together in a rectangular shape.

The conductor radius is 0.01 meter, and the size of the rectangle is 1 meter by 1 meter. The cross section and

physical dimensions of the transmission line are shown in Figure 4-2.

Figure 4-1 A Typical Transmission Line System with Pipeline.

PART I

Figure 4-2 The Cross-Section of the Transmission Line Configuration.

4.3 SESTLC Interface Overview

Let’s start TLC now. A Start Page screen will appear as shown in Figure 4-3. There are several ways to start a

new project. Please refer to the SESTLC on-line help for more information. The simplest way is to click on

the

(New Project) icon on the toolbar. The New Project Wizard will be invoked as shown in Figure 4-4.

Let’s start with the Steady State Induction computation. Now the New Project Wizard will walk us through

the whole process of data entry. At any time you can interrupt the data entry session on the New Project

Wizard dialog screen by clicking on the Finish button. This will bring you back to the standard screen,

General page in this case, as shown in Figure 4-5. We can see that the standard screen offers a menu bar, a

toolbar and a status bar. Below the toolbar, there are two panels. The left panel gives quick access to the

various computation types that can be selected from the dropdown menu. The data items (pages)

corresponding to each computation type is refreshed when you switch from one type to another. The right

panel displays the input data pertaining to the page you have selected (by clicking on the Select Page item).

Figure 4-3 The TLC Start Page.

4 – Using SESTLC: A Simplified AC Induction and Field Calculation Program

Figure 4-4 The TLC New Project Wizard.

Figure 4-5 TLC Standard Screen: General.

Let’s now go through all the standard screens (pages). The General page allows you to define the common

general project information such as Case Description, System Frequency and System of Units.

4.4 Steady State Induction Computations

In this section, the steady-state induction computation using TLC is presented. The cross section of the

transmission line with the pipeline is shown in Figure 4-2. The 3D view is similar to that shown in Figure 4-1.

The Victim Circuit Page is shown in Figure 4-6. Here we specify the parallel length, left continuous length,

and right continuous length of the pipeline as defined in the figure in the screen. The pipe coating resistance,

left and right ground impedances of the pipe are also specified here.

The Cross Section Page is shown in Figure 4-7. Cross section of the common corridor of the transmission line

and the parallel pipeline is specified here. Line characteristics such as relative resistivity and permeability as

well as inner and outer radius of phase conductors, neutral wires, and pipeline are also specified here. The

PART I

neutral conductor in this case is 1/2 EHS-AG steel conductor. The pipeline radius is 0.127 m (10”) and its

thickness is 7 mm. The pipeline is buried at a depth of 1.5 m.

Figure 4-8 shows the Energization Page where the energization currents of the phase conductors are specified.

Figure 4-9 shows the Soil Type Page where the soil resistivity is specified.

The Advanced Page is shown in Figure 4-10. Note that ‘Show Plots’ here requests that the plots be displayed

on screen immediately after the computations have been performed rather than be saved in files which can be

displayed later. TLC presents computation plots using the Array Visualizer application.

To run TLC, simply click Process in any standard screen. In this case, induced pipe potential will be

displayed on screen as shown in Figure 4-11. The two peaks in the potential curve correspond to the two

locations where the pipe deviates from the transmission line (the two ends of the Parallel Length). The lowest

potential in the middle of the curve corresponds to the middle point of the pipeline, which is as expected.

Figure 4-12 shows the induced current flowing in the pipeline. It can be seen that the maximum current

appears at the middle point of the pipe, as expected.

Figure 4-6 TLC Standard Screen: Victim Circuit.

4 – Using SESTLC: A Simplified AC Induction and Field Calculation Program

Figure 4-7 TLC Standard Screen: Cross Section.

Figure 4-8 TLC Standard Screen: Energization.

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鲸阮

2023-07-24

通过阅读这个文件，我发现它的相关内容非常实用，能够帮助解决很多CDEGS软件使用过程中的问题。
陌陌的日记

2023-07-24

这个文件收集了许多与CDEGS软件相关的资料，很全面，非常适合学习和使用。
顾露

2023-07-24

这个文件很有用，对于使用CDEGS软件的人来说，是一份很好的资料。
西门镜湖

2023-07-24

阅读这个文件后，我对CDEGS软件有了更深入的了解，其中的详细解释和示例非常有帮助。
深层动力

2023-07-24

这份文件提供了很多实用的技巧和技术，对于我理解和应用CDEGS软件起到了很大的帮助。

Excalibur_Guo

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