All electrical studies should be well-documented for use in plant modifications. These studies will be of great value in evaluating plant problems.
LOAD FLOW
A load flow study should be performed as early in the design as possible even if the exact equipment is not known. The load flow study will help in getting an idea of transformer size and potential voltage drop problems.
A final load flow study should be performed to document the final design and will be very helpful if modifications are required in the future.
SHORT CIRCUIT ANALYSIS
Short circuit studies must be performed to determine the requirements for circuit breaker interrupting capability. Relay coordination should be studied as well.
SURGE PROTECTION
Surge protection may be required to limit transient overvoltage caused by lightning and circuit switching. A surge study should be performed to determine the needs of each plant configuration. Surge arrestors and/or capacitors may be required to limit transient voltages to acceptable levels.
PHASING
A phasing diagram should be made to determine correct transformer connections. An error here could prevent
