Whether an electrical installation runs safely and efficiently can only be proven with numerical analysis. Short-circuit calculations, load flow analyses, harmonic measurements, and protection coordination underpin every critical decision from equipment selection to operational safety. The power systems analysis service reveals the facility's electrical behaviour through engineering calculations and makes the risks visible.
Miratek performs analysis work with internationally accepted methods: IEC 60909 is the basis for short-circuit calculations and IEEE 519 for harmonic assessments. Analyses are modelled in power system software such as ETAP, and the results are presented not merely as a report but together with actionable improvement recommendations.
This service is used both at the design stage of new investments and for assessing the current state of operating facilities. Chronic problems such as selectivity issues, harmonic-driven heating, and inadequate reactive power compensation are resolved permanently on the strength of the analysis results.
Analysis Scope Summary
| Analysis Types | Short circuit, load flow, harmonic, selectivity, and arc flash analysis |
| Reference Standards | IEC 60909 (short circuit), IEEE 519 (harmonics) |
| Modelling Environment | ETAP and comparable power system analysis software |
| Application Areas | Industrial facilities, power plants, MV and LV distribution systems |
| Deliverables | Analysis report, coordination curves, relay setting table, improvement recommendations |
| Field Work | Power quality and harmonic measurements with data collection |
How We Work
Data Collection and Site Survey
Single-line diagrams, equipment nameplate data, and — where needed — field measurements provide the data for an up-to-date electrical model of the facility.
System Modelling
The facility is modelled in power system analysis software with transformer, cable, busbar, and load details.
Running the Analyses
Short-circuit, load flow, harmonic, and selectivity analyses are run scenario by scenario.
Evaluation and Reporting
Results are compared against the standard limit values; risks and non-conformities are prioritized and reported.
Improvement and Implementation
Corrective works such as relay settings, filter, or compensation revisions are designed and, on request, implemented.
Scope of Work
- IEC 60909-based short-circuit calculations
- Load flow and voltage drop analyses
- Harmonic measurement and IEEE 519 compliance assessment
- Protection coordination (selectivity) study and relay settings
- Arc flash risk analysis
- Reactive power compensation system assessment
- Analysis report and improvement roadmap
Frequently Asked Questions
Why is harmonic analysis needed?
Drives, UPS units, and power electronic loads create harmonic distortion in the network, which leads to transformer and cable heating, compensation failures, and faults in sensitive devices. Harmonic analysis pinpoints the source and level of the distortion; a filter or system revision is then designed on that data.
What does a selectivity (protection coordination) study deliver?
In poorly coordinated protection schemes, a minor fault can black out the entire facility. The selectivity study sets the relay and breaker settings so that a fault disconnects only the affected zone. The result is minimal downtime and fast intervention when a fault occurs.
Can analysis be performed at an existing, operating facility?
Yes — a substantial part of the analysis is carried out without stopping the operation. Power quality measurements are taken while the facility runs; the modelling work is done from existing drawings and nameplate data. Checks that require field verification are aligned with planned maintenance shutdowns.
