Why harmonics analysis?

When a voltage and/or current waveform is distorted, it causes abnormal operating conditions in a power system such as:

1. Voltage Harmonics can cause additional heating in induction and synchronous motors and generators.
2. Voltage Harmonics with high peak values can weaken insulation in cables, windings, and capacitors.
3. Voltage Harmonics can cause malfunction of different electronic components and circuits that utilize the voltage waveform for synchronization or timing.
4. Current Harmonics in motor windings can create Electromagnetic Interference (EMI).
5. Current Harmonics flowing through cables can cause higher heating over and above the heating that is created from the fundamental component.
6. Current Harmonics flowing through a transformer can cause higher heating over and above the heating that is created by the fundamental component.
7. Current Harmonics flowing through circuit breakers and switch-gear can increase their heating losses.
8. RESONANT CURRENTS which are created by current harmonics and the different filtering topologies of the power system can cause capacitor failures and/or fuse failures in the capacitor or other electrical equipment.
9. False tripping of circuit breakers ad protective relays.

ZDDQ harmonics solution

1. Low voltage passive harmonic filter
2. Low voltage active harmonic filter
3. Medium voltage passive harmonic filter