388-14 Generator Operations for Maintaining Network Voltage Schedules VAR (1 CEH)
Learning objectives
- Explain the impact to system voltage when a high voltage transmission line is either placed into or taken out of service.
- Identify why the Generator Operator must operate each generator connected to the interconnected transmission system in the automatic voltage control mode
- Unless exempted, recall why the Generator Operator shall maintain the generator voltage or Reactive Power schedule
- Identify the responsibilities of the Generator Owner in regards to the tap settings on step-up transformers
- Recall why a Generator Operator must keep the Transmission Operator continuously informed of all significant changes in generator voltage
Course overview
The electric generator is the primary source of reactive power and a dynamic source of reactive power when its AVR is in service. The AVR is designed to maintain a constant voltage. When in service, it immediately increases or decreases the amount of reactive power on the transmission system in response to changing conditions. When a generator trips off-line, its cannot supply or absorb MVAR. This event also changes the MW flow on the transmission system, affecting the transmission line load. Transmission Operators must recognize generator voltage regulators that might have to operate on manual or when the generator reactive capabilities are limited. The Generation Operation for Maintaining Network Voltages training course ensures generators provide reactive support and voltage control within generating facility capabilities to protect reactive equipment and maintain reliable operation of the Interconnection. This online training course is part of the Active and Reactive Power training series.
The individuals involved in the development and promotion of this course do not receive any compensation or financial benefits outside of their regular employment for their work on this course.
