Learn 132kV Line Protection Setting and Calculations

Dear All,

A distance protection relay is one of the most important and artistic. A distance relay is a type of protection relay most often used for transmission line protection. Distance relays measure the impedance from the installation side to the fault location and operate in response to changes in the ratio of measured current and voltage.

Distance protection schemes are commonly employed for providing the primary protection and backup protection for AC transmission lines and distribution lines against three-phase faults, phase-to-phase faults, and phase-to-ground faults.

ITrainer Introduction:

Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.

His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.

The following topics are covered in this course.

• Single Line Diagram of Substation

  • Course will start with explanation of single line diagram of substation

  • Understand substation configuration

• Getting required data of transmission line

  • How line impedance is gathered

• Selection of adjacent line, shortest & longest

• How to set zone reaches for Z1,Z2 & Z3

• Current and voltage transformers

• Primary and secondary values

• What is transformation factor & how to calculate it

• Positive and zero sequence impedances

• Phase to ground compensation factor

• How to calculate Ko for composite lines

• What is Line angle and load angle

• What is line impedance

• How to select relay characteristics Mho or Quad

• How to do Zone 1, 2 & 3 calculations

• How to set non-homogeneous angle

• What is load encroachment and how to avoid it

• Power swing blocking

• Out of step tripping

• Stable and unstable power swing

• Switch on to fault

• Seal in time

• Loss of potential

Best Regards