Harmonic Studies

What is Harmonics? Harmonics can cause power quality problems. It is the electric voltage and current on an electric system. This will cause abnormality in the power quality. Electrical machinery will fail or malfunction. When harmonic voltage and current levels are high values, the harmonic distortion will occure. Harmonics has become a growing concern for facilities, plants using automation equipment. OILMARK is a provider of Electrical Installation’s Study, Power Quality and Harmonic study and Analysis in UAE, and also offer harmonic study and harmonic analysis services.

Harmonics can cause:

Harmonics is responsible for circulating high voltage and currents caused by harmonic resonance. This causes the equipment’s to fail or malfunction. The main reason is voltage and current distortion. The internal energy of the electrical equipment will be lost at rapid pace. This results in failure and lower lifetime. There are chances of errors in the meter reading. In many cases Harmonic distortion can cause tripping of branch circuit breaker and also hazardous fire in the wiring and distribution systems. Usually the power factor of the system with harmonic distortion will be lower.

Need for Harmonic study and analysis

Harmonics can lead to reduction in the reliability of electrical power system. Harmonics lowers the power quality of the electrical power system in a commercial building or industry. Most of the issues due to Harmonic distortion can be avoided during the electrical design stages. OILMARK provides Harmonic studies and Harmonic analysis in UAE.

IEEE recommends practices for Commercial and Industrial sectors. Once analysis is done, Harmonics must be within acceptable limits when the subject electrical power system supports more than one customer.

Only when the non-linear power become a major part of the overall load, OILMARK’s harmonic study and analysis is preferred to identify the harmonic levels and detect Harmonic resonance problems regardless of the industrial rectifier pulse in the system. Usually most of the buildings can support non linear loads of up to 17% of the total electrical system capacity without concern. If the loads exceed 17%, it can result in big issues at site.

In the following cases harmonic study need to be performed:

During the electrical design stage the non linear loads go above 25% of the total loads on a system, OILMARK provides harmonic study in UAE and is necessary to verify the values with the recommended harmonic value
OILMARK provides Harmonic studies and Harmonic analysis in UAE to solve harmonic distortions that cause failure of electrical equipment and relays.
In case the building or industrial plant is revamping and there is possibility of inserting more non linear loads, then a harmonic analysis study will be conducted by OILMARK to confirm whether the plant will smoothly function even after adding additional loads.
Whenever the client adds a capacitor bank in the electrical system with many nonlinear loads, then a harmonic study and analysis is necessary to verify the probability of harmonic resonance.

How is Harmonic studies performed

Harmonic analysis or harmonic study is a technical method of preventive maintenance that helps to predict harmonic resonances and harmonic distortion in the electrical power system. OILMARK provides Harmonic studies by using computer and analyzer to perform studies. The analyzer has a software for reading the harmonics. Electrical Equipments like capacitors, relays, transformers, system impedance and non-linear loads are shown by different frequency harmonic currents. Harmonic studies by OILMARK will indicate if harmonic levels are within the recommended limits.