Harmonic Analysis of Finnish Power System

Power is a vital part of life in the modern world. The great majority of the goods we use every day are powered in some way. We must use optimal power systems to provide electricity that is both affordable and secure. Several issues have been identified with power systems because of harmonics, which elevate the RMS of the current flow in the circuit and so increase loss. Harmonics can have an impact on the whole distribution system, right down to the loads. Harmonics can also harm sensitive appliances and equipment in your industrial or commercial structure. In other cases, the existence of a harmonic breakdown is not immediately apparent and cannot be distinguished from the appliance’s normal ageing.

Defines Harmonic Distortion:

If harmonic problems arise, their restricted scope may have an impact on the power supply’s dependability. Problems in power systems are caused by electric current and voltage harmonics. In power systems, high harmonic levels can cause equipment failure or damage. A non-linear load in an electrical system frequently causes harmonics, or distortion of the current waveform. Non-linear loads and harmonically produced loads in power systems include personal computers, variable speed motors, driven motors, fax machines, laser printers, Switch-mode power supplies (SMPS), batteries, and uninterruptible power supplies (UPS).

Harmonic Analysis' Importance:

Harmonic reduces the performance and quality of power systems. The use of harmonic analysis to detect harmonics inside the power system will improve system reliability. The frequent use of modern power electronics equipment results in nonlinear currents. As a result, harmonics are generated as a function of system loads. Equipment and equipment must be energy-efficient and meet energy-saving standards.

When Did Harmonics Analysis Become Necessary?

Harmonic restrictions must be reviewed if load measurements exceed 25% of a circuit’s total load or bus system.
To deal with harmonics-related issues including equipment damage and malfunction.
The date when the plant will be enlarged and the number of non-linear loads that will be added.
When an additional capacitor bank is introduced to the electrical systems, harmonic analysis is required.

THE CATEGORIZATION OF THE EQUIPMENT	A HARMONIOUS CONCLUSION
Equipment that rotates	Power loss, overheating, and torque pulsation are all reduced.
Power wires, switchgear, and a transformer are installed.	Neutral circuit overload causes overheating, higher consumption, neutral overload, and power losses.
Capacitors electriques	A high current failure
Electronic energy	Inefficiencies and flaws
Relay security	Misbehavior and vexing tripping

When a sinusoidal waveform interacts with a nonlinear load, the system experiences distortion and harmonic generation. Harmonic analysis is frequently required when it is necessary to determine the presence of harmonics in a system.

Benefits of Power System Harmonics Mitigation:

Harmonic analysis lowers power losses in cables, switch gears, and safety devices, resulting in lower operational costs. It also aids in the reduction of power system losses.
It minimizes RMS current in the power system and aids in the elimination of transformer oversizing, resulting in cheaper capital costs for cable, switchgear, and busbars.
It automatically improves business performance after minimizing losses and lowering the RMS current value. Increased losses, current RMS value, and overheating of cables, transformers, motors, and capacitors are all caused by harmonics. Unfavorable outcomes may result in a process halt and monetary loss for you.

Methods for Conducting a Power Quality Analysis:

Obtain a one-line diagram to highlight the non-linear loads.
Keep an eye out for the common connecting point (PCC (Point of Common Coupling)).
Highlights the plant buses that may be impacted by harmonics.
Compile all nonlinear load statistics and the utility provider’s prior harmonic performance.
Create a model of the electrical system’s performance using ETAP (Electrical Transient Analysis Program) software.
Conduct the harmonic analysis and inquiry after verifying the voltage and current distortion levels.
Choose a mitigation strategy if the harmonic distortion exceeds the allowable level.
Rerun the harmonic analysis after employing the mitigation approach to confirm CEC compliance.

CareLabs provides its personnel with innovative equipment to secure the safety of your electrical equipment and provide you with a stable operating environment. Learn more about the harmonic research and analysis services offered by CareLabs and get a quote right away.