Power System Analysis & Planning
How does your electric power plant align with your business’s key priorities such as:
- capital expenditure,
- ongoing costs,
- process reliability or
- ease of extension, maintenance and operation?
AEE is committed to understanding the role that electrical power plays in the business of every one of its clients.
Our experience of power system planning is that most customers know what they want. What they actually want to know is whether or not their plans will work. That is where AEE can help. The tasks described below are typical for power planning projects undertaken by AEE.
Typically, we start with load flow studies to determine:
- the adequacy of the power supply, be it local generation or a connection to a utility grid,
- the equipment ratings necessary to meet maximum demands without risking thermal damage,
- the voltage regulation that will avoid stressing insulation and maintain voltages within safe and efficient operating limits.
Short circuit studies to AS3851 quantify the following prospective short-circuit currents required for the correct specification of switchgear to Australian Standards:
- Rated short-time withstand current
- initial symmetrical rms short-circuit current
- short circuit making current, &
- short circuit breaking current.
Harmonic distortion is an ever present problem for the electricity supply industry which is exacerbated by the proliferation of devices incorporating power electronics. AEE will arrange and supervise the monitoring of harmonic current and voltage distortion at your site then conduct a harmonic load flow analysis to examine and reduce harmonic disturbances.
Synchronous generators or synchronous motors are costly investments that need to be operated with care to ensure their continued reliability. Both of these machine types are susceptible to pole slipping, the phenomenon by which machines pull out of synchronism with each other. Pole slipping can damage bearings, loosen windings or destroy entire machines. AEE’s transient stability studies identify machines at risk of pole slipping and provide solutions ranging from the specification of critical fault clearing times to the installation of pole slipping protection relays.
AEE also conducts transient simulations of:
- motor starting to identify acceptable and unacceptable starting options,
- under frequency load shedding schemes to ensure that they will trip the required amounts of load at the right times to preserve system integrity.