/EPT-PRJ-TX-Line-Design

A simple, browser based interface for the electromechanical design of 10 different transmission line geometries.

Primary LanguageHTML

EPT-PRJ-TX-Line-Design

A simple, browser-based interface for calculating electromechanical characteristics of 10 different power transmission line geometries.

Built as an end-of-semester Complex Engineering Problem-based project for the EE-352 Electrical Power Transmission course as part of BE-Electrical Engineering at NEDUET.

Group

TE-EE 16-17 Section D, Spring 2019

Roll Number Name Roles
EE-16163 Saad Siddiqui Web frontend, JS programming, research, report
EE-16164 Faiq Siddiqui MATLAB prototyping, research, report
EE-16168 Rehman Gul Research, report
EE-16084 Aymen Amir Research, report

Workflow

Inputs - Presets

The app first rovides the user the option to select one of 10 practical power transmission (TX) line geometries with the following preset parameters

  • TX Voltage in kV
  • Horizontal, vertical, and inter-bundle spacing of conductors.
  • Number of conductors per bundle (if applicable)

Inputs - User-defined

It then asks the user to specify the following input parameters

  • TX line length (in m)
  • Average temperature along TX line (in degrees Celsius)
  • Average pressure along TX line (in mm Hg)
  • ACSR Conductor Code
    • This is used to implicitly specify the Resistance, Capacitance, and Inductance per unit length of the conductor.
    • Available ACSR conductors
      • Curlew
      • Drake
      • Dove
      • Martin
      • Rail

Outputs

The app then calculates and displays the following output parameters

  • Line Inductance (in Henries/meter)
  • Line Capacitance (in Farads/meter)
  • Surge Impedance Loading (in MW)
  • Resistive Losses (as a %age of the total power losses)
  • Disruptive Critical Voltage (in kV)
  • Coronal Losses (in kW/km/phase)

Line inducatance and capacitance are not simply the conductor's per unit length L/C values multiplied by the user-specified transmission line length. These values are derived using the relative positioning of conductors with respect to each other, both inside and outside bundles, and the transmission tower's ground wire.

Interface

  • The interface is designed using HTML, CSS, ES5/6, jQuery, and Bootstrap.
  • Decided to use a web-based interface as a personal challenge to apply to hone existing web design and development skills.
  • Other alternatives explored included a MATLAB app designer-based app and a Java GUI.
  • To keep things as simple as possible, I did not use Express, Node.js, or any server/backend framerwork.
  • JS is loaded as modules that requires CORS to be enabled.

Improvements

Electrical Stuff

  • Add more geometries for the user to choose from.
  • Allow the user to specify a load and calculate the line current. This may also lead to a more accurate estimate of the resistive losses.
  • Add more ACSR conductors for the user to choose from.
  • Could also add a report generator that downloads the JS object with presets, inputs, and calculated parameters as a simple JSON tree (or equivalent format).

JS and OOP

  • Implement stronger JS OOP principles. OOP is used sparingly in this application (with the exception of the ACSRConductor class).
  • For instance, a class can be defined for TX_Line that is extended by subclasses for lines with bundled or unbundled conductors, or single, double, multiple circuits, etc.
  • Common functions such as getResistiveLosses(), getSIL can be added to the prototype of the TX_Line class for inheritance.

BuiLding a Backend

  • Could use MongoDB to store names, descriptions, conductor spacing, voltages, and other preset parameters.
  • Could also use Express with EJS to dynamically generate transmission line geometry forms with a single HTML file (as opposed to a separate form page for each file).