Harmonic Analysis of the Chile Power System:
Power is an indispensable aspect of existence in the modern world. Most commonplace objects are powered in some way.
To provide energy that is both cost-effective and safe, we must employ the most efficient power systems. Harmonics have been associated with a variety of power system issues due to the fact that they increase power loss by increasing the RMS of the circuit’s current flow. Harmonics may have an effect on the masses and the distribution system as a whole. Harmonics may cause damage to delicate appliances and apparatus in your industrial or commercial facility. In other instances, the existence of a harmonic breakdown is not readily apparent and cannot be distinguished from the appliance’s normal aging.
Harmonic Distortion Definition:
If harmonic issues arise, they may have a minimal effect on the dependability of the power supply. Harmonics in the electric current and voltage are the root cause of power system issues. High harmonic levels in electrical systems can cause equipment damage or destruction. A nonlinear load frequently contributes to harmonics or distortion of the current waveform in an electrical system. In power systems, personal computers, variable speed motors, driven motors, fax machines, laser printers, Switch-mode power supplies (SMPS), batteries, and uninterruptible power supplies (UPS) are examples of non-linear loads and harmonically produced loads.
Harmonic Analysis Is Essential:
Harmonics have a negative impact on the performance and integrity of electric systems. Using harmonic analysis to identify harmonics within the power system will increase the system’s dependability. Modern power electronics equipment generates nonlinear currents as a consequence of normal use. Harmonics are produced because of the system stresses. Energy-efficient and energy-saving criteria must be met by all equipment.
When Did Harmonic Analysis Become Necessary?
- If a circuit’s load measurements exceed 25 percent of its total load or bus system, the harmonic restrictions must be verified.
- To address problems associated with harmonics, such as equipment failure and damage.
- When the facility is expanded, the timing and volume of non-linear burdens will be introduced.
- When additional capacitor banks are added to electrical systems, a harmonic analysis is required.
| Classification of the apparatus | A successful conclusion. |
|---|---|
Rotating apparatus |
Loss of power, increased cable resistance, overheating, and pulsation of torque. |
The installation of power lines, switch gear, and transformers. |
Neutral overload causes overheating, increased consumption, neutral overload, and power loss. |
Batteries containing capacitors |
A significant current breakdown |
Electric force |
Blunders and ineffectiveness |
Protecting relays |
Misbehavior and irksome stumbling |
A nonlinear load interacts with a sinusoidal waveform, causing distortion and harmonics in the system. When it is necessary to determine whether a system contains harmonics, harmonic analysis is frequently required.
Power System Harmonics Mitigation Benefits:
- By decreasing the power losses of cables, switch mechanisms, and safety devices, harmonic analysis reduces operating expenses. In addition, it helps reduce power system losses.
- It aids in reducing transformer oversizing and RMS current in the power system, thereby reducing the need for cable, switchgear, and busbars and capital costs.
- Harmonics result in increased losses, a higher RMS current value, and overheating of cables, transformers, motors, and capacitors. The unfavorable results may force you to abandon the procedure and incur financial loss.
Methods for Evaluating Power Quality:
- Obtain the one-line figure to highlight the non-linear burdens.
- Observe the PCC or point of common connection.
- Concentrates on the plant vehicles that may be affected by harmonics.
- Gather all historical information regarding nonlinear loads and harmonic performance of the utility provider.
- Create a model using the performance data of the electrical system and the ETAP (Electrical Transient Analysis Program) software.
- Conduct harmonic analysis and research and verify voltage and current distortion levels.
- Determine a strategy for mitigating harmonic distortion if it is excessive.
- After implementing the mitigation strategy, the harmonic analysis should be reapplied to ensure CEC compliance.
To ensure the safety of your electrical equipment and provide you with a reliable working environment, CareLabs equips its professionals with the latest technology. Learn more about CareLabs’ harmonic research and analysis services by requesting a quote.
