High Voltage Busbar Protection

Course Highlights

The protection arrangement for an electrical system should cover the whole system against all possible faults. Line protection concepts, such as overcurrent and distance arrangements, satisfy this requirement, even though short circuits in the busbar zone are cleared after certain time delay. But in the case, unit protection is used for feeders and plants, the busbars are not inherently protected.

It is a fact that the risk of a short circuit happening on modern metal clad equipment is insignificant, but it cannot be completely dismissed. Nevertheless, the damage resulting from one short circuit may be huge, up to the overall loss of the substation by fire. Severe damage or destruction would possibly end in widespread and prolonged supply disruption.

This course is suitable for electrical engineers with a desire to understand the fundamentals of high voltage busbar protection. Presented details cover key technical concepts, design arrangements and protection types. Upon successful completion engineers will be able to address the most important high voltage busbar protection arrangements and principles and appropriate application.

Learning Objectives

This continuing education course is intended to provide you with the following specific knowledge and skills:

System protection schemes including frame-earth protection

Differential protection principles

High impedance differential protection

Low impedance differential protection

Arrangement of CT connections

Interlocked overcurrent busbar schemes