IEEE 1584 · Engineering
Power System Study and Analysis in Portugal | Carelabs
Power system study and analysis solves the power flow equations that govern your electrical network — confirming that generators, lines, transformers, and shunt elements perform as intended, withstand expected stress, and are protected against failures. For a Portuguese facility, Carelabs brings load flow analysis, short-circuit and fault analysis, and relay coordination together into one connected study, performed in ETAP, and delivers findings aligned with RTIEBT.
Free ConsultationHow much capacity do you actually need
Contracted power is a standing cost. Contracting too much is money paid every month for headroom you never use; contracting too little constrains the site. Both are decided from a number most plants have never calculated.
What We Deliver
Demand established from measurement
Real demand is determined from metered data rather than from connected load. The difference between those two figures is where most over-contracting originates, because connected load assumes everything runs simultaneously and it never does.
WHY IT MATTERS
Paying monthly for the wrong number
Contracted power is frequently set at connection and never revisited, derived from connected load rather than measured demand. It then persists for years as a standing cost nobody has tested against what the site actually draws.
- Metered demand analysed across a full operating cycle, including seasonal variation, rather than taken from a single peak reading.
- Diversity between loads established from measurement, since the assumption that everything runs together is what inflates a connected-load estimate.
- Growth modelled as its own case, so a contract is sized for the plant that is planned rather than only the plant that exists.
- Fault duty rechecked where capacity increases, because a stronger supply raises the current your switchgear must interrupt.
- Power factor assessed as part of the position, since reactive demand consumes contracted capacity that could otherwise carry useful load.
DELIVERABLES
What you receive
Issued against RTIEBT and IEC 60909, with the load basis and modelling assumptions stated so the conclusions can be audited.
- 1Measured demand profile across the operating cycle, with diversity quantified
- 2Branch and transformer loading per scenario, naming the element that binds first
- 3Spare capacity in kVA at the constraining element, for contract and expansion decisions
- 4Fault duty per bus with pass or fail against installed equipment ratings
- 5The calibrated ETAP model, so a future capacity question is a re-run rather than a new engagement
How the study runs
Frame the decision
We establish what is being decided: a contracted power review, a connection application, or how much load can be added before reinforcement becomes unavoidable.
Analyse real demand
Metered data is collected across a representative cycle and reconciled against connected load, since the gap between them is usually the finding.
Build the model
The network is modelled in ETAP from site-verified data, with transformer and cable parameters from certificates and schedules rather than defaults.
Solve the scenarios
Present operation, maximum demand, alternative switching arrangements and planned growth are each solved as separate cases.
Name the constraint and the duty
The first binding element is identified for each case, and fault duties are checked so a capacity change does not create an equipment adequacy problem.
Report and support the decision
Findings are issued with the capacity position stated plainly, in the terms needed for a commercial conversation as well as a technical one.
Frequently asked questions
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