The requirements of safety, minimisation of damage to faulted plant, minimisation of consequential damage to healthy plant and maintenance of a stable and secure supply of electricity are paramount to all protection designs. A generator may be exposed to three types of occurrence (Generator Fault, Generator Event, External Fault) which require protection schemes to operate effectively and efficiently but in vastly different time frames.
In this seminar we will consider the application of protection to generators, considering the three occurrences mentioned above. This will facilitate an appreciation of generator protection, the coordination aspects of these protection schemes, and the information required to determine protection settings.
But, beyond the generator itself, the power station engineers and technicians need an intimate understanding of the protection schemes associated with the remaining plant, including busbars, transformers and the many large induction motors. Thus the task, not only for the protection engineer, but for all engineers and technicians associated with the power station, is to ensure that planning, design, coordination, implementation, commissioning, operation and maintenance of protection systems optimises both the dependability and security of these schemes.