Power Quality Analysis

Power quality analysis is the foundation of effective electrical system improvement. Before any corrective action can be taken, the actual behaviour of the electrical system must be measured, recorded, and understood. Technical Solutions provides professional power quality analysis services using Class-A network analysers and structured engineering methodology.

Measurement

Technical Solutions deploys professional-grade power quality instruments at strategic points in the electrical network:

• IEC 61000-4-30 Class A analysers — the highest accuracy class for power quality measurement, ensuring legally defensible and technically reliable data
• Multi-point deployment — instruments installed simultaneously at multiple locations to capture system-wide behaviour
• Extended recording periods — typically 7 to 14 days of continuous recording to capture intermittent events and load cycle variations
• All electrical parameters — voltage, current, frequency, power, power factor, harmonics, flicker, unbalance, transients, and events

Analysis

Raw measurement data is analysed by our engineering team to identify:

• Harmonic distortion — total harmonic distortion (THD) levels and individual harmonic magnitudes, identifying polluting loads and affected circuits
• Voltage events — sags, swells, interruptions, and transients with timestamps, durations, and severity
• Power factor and reactive power — displacement and distortion power factor, identifying opportunities for correction
• Frequency stability — particularly relevant for generator-supplied or weak grid installations
• Phase unbalance — voltage and current unbalance that can cause motor overheating and equipment stress
• Flicker — rapid voltage fluctuations caused by intermittent loads such as arc furnaces or large motor starts

Event Capture

Power quality events — transients, sags, and disturbances — are often brief and unpredictable. Our instruments capture:

• Waveform recordings — detailed voltage and current waveforms during disturbance events
• RMS event recording — half-cycle RMS measurements for event characterisation
• Triggered captures — automatic recording when parameter thresholds are exceeded
• Time correlation — synchronised timestamps across multiple measurement points for cause-and-effect analysis

Reporting

Technical Solutions delivers comprehensive engineering reports that translate measurement data into actionable information:

• Executive summary — key findings, risk assessment, and recommended actions
• Detailed measurements — tabulated and graphed parameter values with standards comparison
• Event analysis — characterisation of captured disturbances with probable causes
• Compliance assessment — comparison against IEC 61000, IEEE 519, and relevant utility standards
• Recommendations — specific engineering measures to address identified issues, with estimated costs and benefits
• Supporting data — raw measurement files for client reference

Practical Problem Solving

Power quality analysis from Technical Solutions is not an academic exercise. Our reports are designed to lead directly to practical solutions:

• Harmonic sources are identified with specific corrective measures (active filters, passive filters, isolation transformers)
• Voltage issues are traced to root causes with recommended mitigation (stabilisers, tap changers, network reinforcement)
• Protection settings are reviewed against actual fault and load conditions
• Energy waste from poor power factor is quantified with correction equipment recommendations

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