Analysis of the

Czech Power

System's Harmony:

System's

Harmony:

Power is a necessary component of life in the modern day. We are always surrounded by things that use power in some capacity. We need to use the most cutting-edge power technologies to provide affordable and dependable electricity. A variety of problems with the power system have been caused by harmonics, which increase the RMS of the current flow in the circuit and cause an increase in loss. Both the loads and the entire distribution system may be impacted by harmonics. Delicate appliances and equipment in your industrial or commercial firm might be harmed by harmonics. In certain cases, a harmonic breakdown is not immediately apparent and cannot be distinguished from the appliance’s normal ageing.

Harmonic Distortion:

If harmonic issues arise, the dependability of the power supply may be slightly impacted. Issues with the electrical current and voltage are mostly brought on by harmonics. Power systems with high harmonic levels run the risk of destroying or damaging equipment. Harmonics, or distortion of the current waveform, are frequently increased in an electrical system by a nonlinear load. Examples of 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).

Why Analyzing Harmonics Is Important:

Electric system performance and quality are negatively impacted by harmonics. The reliability of the system will increase when harmonics inside the power system are located via harmonic analysis. Currents with nonlinear behavior are routinely produced while using contemporary power electronics equipment. Therefore, the system stresses led to the production of harmonics. All equipment must comply with criteria for energy-saving and efficiency.

When Was Harmonic Analysis Required?

The harmonic constraints must be validated if a circuit’s load measurements are greater than 25% of the circuit’s total load or bus system.
Handling issues with harmonics such equipment damage and failure.
The timing and number of non-linear loads will increase when the facility is enlarged.
When an additional capacitor bank is introduced to the electrical systems, harmonic analysis is required.

Classification of the apparatus	Harmonic conclusion
Rotating machinery	Power loss, increased cable resistance, overheating, and torque pulsing.
The setting up of transformers, switch equipment, and power wires.	Overheating, increased consumption, neutral overload, and power loss are all results of neutral overload.
Batteries containing capacitors	A breakdown with a significant current
Electrical power	Failures and inefficiency
Defending relays	Negligence and irritating stumbling

A sinusoidal waveform interacts with a nonlinear load to produce distortion and harmonics in the system. Harmonic analysis is often essential to determine whether a system has harmonics.

Power System Harmonics Abatement Benefits Include:

Harmonic analysis lowers operational costs by reducing the power losses of cables, switch gears, and safety devices. Additionally, it aids in lowering power system losses.
Having less demand for cable, switchgear, and busbars lowers capital costs since it minimizes transformer oversizing and lowers the RMS current of the power system.
Losses are reduced, which naturally improves business performance and lowers the RMS current value. Increased losses, a larger current RMS value, and overheating of cables, transformers, motors, and capacitors are all effects of harmonics. If the results are bad, you can decide not to have the operation, which would cost you money.

Techniques for Assessing Power Quality

Obtain the one-line graphic to highlight the nonlinear loads.
Keep an eye out for the shared connection point (PCC).
The plant buses that harmonics may impair are the focus of the discussion.
Assemble all previous data on the utility provider’s harmonic performance and nonlinear load characteristics.
Using the ETAP software and the electrical system’s performance, create a model.
Analyze and investigate harmonics and gauge the degree of voltage and current distortion.
Identify a method for reducing harmonic distortion if it is too much.
Rerun the harmonic analysis after using the mitigation strategy to verify CEC compliance.

CareLabs provides its staff with the newest technologies to guarantee the security of your electrical equipment and provide you with a trustworthy working environment. Request a quote to learn more about CareLabs‘ harmonic research and analysis services.