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POWER QUALITY · INDIA

Power Quality Analysis for Indian Industrial Plant

In India power quality is enforced from both directions. The distribution licensee sets what you may inject back into its network, and your own process sets what it can tolerate. Harmonic limits are assessed at the point of common coupling with the DISCOM, usually against IEEE 519, while the CEA Regulations 2023 govern the installation itself.

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CEA Regulations 2010IEEE 1584CEA / DGMS CompliantCEA Regulations Standards

What an Indian Power Quality Study Has to Establish

Two different obligations meet at the same meter: what the DISCOM will accept, and what your plant can survive.

What We Deliver

Harmonic limits at the DISCOM boundary

Distortion is assessed at the point of common coupling with the distribution licensee. IEEE 519 is the usual reference, and the DISCOM's own supply code may impose more. The study fixes the measurement point before anything is recorded.

WHAT GOES WRONG

Where Indian Power Quality Studies Fall Short

The common failure is attributing a problem to the wrong side of the meter, and then spending capital on mitigation that was never going to fix it.

  • Distortion measured downstream of the actual DISCOM point of common coupling.
  • Upstream supply disturbance recorded as if the plant had generated it.
  • Only one supply configuration measured on a site that alternates grid and captive generation.
  • Furnace and drive loads assessed at part load rather than across the duty cycle.
  • Mitigation specified without confirming the dominant harmonic orders.
  • No re-measurement after a capacitor bank or filter changed the resonance picture.
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THE OUTCOMES

What the Report Contains

The report separates what the plant injects from what it receives, because that distinction decides whether the remedy is yours to install or a matter to raise with the distribution licensee.

  1. 1Measurement point fixed on the single line diagram
  2. 2Voltage and current distortion against IEEE 519 at the PCC
  3. 3Individual harmonic orders and resonance risk
  4. 4Sags, unbalance and interruptions with likely origin
  5. 5Results for grid and captive supply where both apply
  6. 6Mitigation options with expected effect and assumptions
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How We Run an Indian Power Quality Study

01

Fix the measurement boundary

Identify the point of common coupling with the distribution licensee and confirm which limits apply, including any state supply code requirement beyond IEEE 519.

02

Characterise the supply

Establish the DISCOM fault level and the normal supply configuration, including whether the site runs on captive generation for part of the duty cycle.

03

Measure across the duty cycle

Record at the agreed points for long enough to capture furnace cycles, drive loading and any switchover between grid and captive supply.

04

Separate injection from reception

Distinguish distortion the plant generates from disturbance arriving upstream, and identify the dominant harmonic orders and any resonance.

05

Report and recommend

Findings against the governing limits, mitigation options with expected effect, and documentation suited to CEIG review or a buyer audit.

Frequently Asked Questions

IEEE 519 is the usual reference for distortion at the point of common coupling with your distribution licensee, and the state supply code issued by the relevant regulatory commission may impose additional conditions. The CEA Measures Relating to Safety and Electric Supply Regulations 2023 govern the installation itself. The study states which limits each result is judged against.
By measuring at the point of common coupling and separating what the plant injects from what arrives on the supply. Indian industrial sites commonly see sags, unbalance and interruptions originating upstream. That distinction matters commercially, because mitigation installed on your side will not fix a disturbance that is being delivered to you.
Substantially. Distortion behaves differently on a captive set than on a grid supply, because the source impedance and the available fault level are different. A site that alternates between the two needs measurement in both configurations. Assessing only whichever supply was running on the survey day is a common reason results do not reproduce.
Long enough to cover the real duty cycle. Sites with induction furnaces, large variable speed drive populations or batch processes need a window that includes the heaviest conditions and any supply switchover. A short recording taken during light load understates distortion and leads to mitigation sized for the wrong problem.

Find Out Which Side of the Meter the Problem Is On

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