Ch-16 PLS CADD

05/07/2013

POWER TRANSMISSION LIMITED, GANDHINAGAR, GUJARAT, INDIA

www.kalpatarupower.com

POWER TRANSMISSION LIMITED,

Training Programme on Design of of Transmission Transmission Lines, Structures and Foundations in Sri Lanka from 01 to 05 July 2013 for CEB Engineers

GANDHINAGAR, GUJARAT, INDIA


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TRAINING PROGRAMME ON DESIGN OF TRANSMISSION LINES,

CEB ENGINEERS By

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BRIEF ON TOWER TOWER SPOTTING SPOTTING IN PLS - CADD

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E D G N I R E E N I G N E

BRIEF ON TOWER


PLS-CADD

POWER TRANSMISSION LIMITED ENGINEERING DEPARTMENT



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TOWER SPOTTING IN PLS-CADD

Steps are required to perform tower spotting using PLS CADD • • • • • •

So twar tware e inst insta a atio ation n Setting preferences Defining Feature codes Generating cable files Generating criteria files Generating structure files

• • • • • •

Defining line alignment Adding structures Adding section (stringing wire) Plotting files Generating stringing files





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Software installation


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Training Programme on Design of Transmission Lines, Structures and Foundations in Sri Lanka from 01 to 05 July 2013 for CEB Engineers




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T N E M T R A

Setting Preferences



Defining feature codes •


•

Before generating a terrain file, one should decide on broad categories of terrain or obstacle points which have unique requirements. These requirements include minimum code clearances to be met above or to the side of the points as well as symbols to be used to display these points on the screen or on the final drawings.


•

conductors. A separate feature code must be created for each category of terrain or obstacle points. •



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•


Terrain / Feature Code Data / Edit command or loaded from existing feature code tables with Terrain / Feature Code Data / Load FEA File. The feature code used to define the ground clearance line is specified in the Terrain / Feature Code Data / Ground Clearance Feature Code dialog.



Defining feature codes •

These feature codes must be defined in the project feature code file before they can be used in a terrain file. Feature code files use the “.fea” extension.




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Creating or editing cable files •

•

This is done in the Cable Data dialog box (see Figure 97 and 9.10) which you reach with Sections / Edit Cable Data. For


example,

the

conductor is permanently stored in the file named Drake.


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Cables in bundles



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Criteria file can be developed in standard libraries to be shared among various projects.

A set of criteria can be saved , “.cri” extension.

or they can be developed only for a specific project. When you save a project, the criteria in use at the time of saving are saved in the file “Project.cri”. If standard criteria already exist in a file “Standard.cri”, all you need to do to use them in a new project is to load Stan ar .cr w t Cr ter a Loa CRI. This action will copy all the data in “Standard.cri” into the new project criteria file “project.cri”. If, after having developed some criteria, you want to save them to become part of a permanent library; you can do so with the Criteria / Save CRI command.



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Weather cases


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The design criteria are selected in the Criteria menus.




Many strength and serviceability (clearances) criteria assume that the line is subjected to a given combination of wind, ice (or . Such a combination is defined herein as a "weather case". In PLS-CADD, all cable sags and tensions calculations, and consequently all loads and clearance calculations, are made for designated weather cases. All weather cases which will be used in a particular design must be described in the Weather Cases table which you reach with Criteria / Weather.

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Design criteria that can be used and checked with PLSCADD.


Design criteria •


Design criteria





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PLAN & PROFILE DRAWINGS •

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•

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Our connection with CAD systems is exclusively through the DXF format. To export your drawing to a CAD system, select File / Export / DXF. After specifying a file name, you will be asked about your destination CAD system (AutoCAD (R) or Micro station (R)) and about whether you want to export a 2- dimensional or a 3dimensional file.



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T H A N K S

A 3-d file export is only applicable to a 3-d view or a structure view. Therefore you should select 2-dimensional. You will also be asked whether to include all sheets in a single CAD drawing or to have one separate CAD drawing for each sheet.

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T N E M T R A

B. B. SHAH

[email protected]

SUJAL SHAH

[email protected]

KAUSHAL

[email protected]

Ch-16 PLS CADD

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