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Philippines Power System Harmonic Analysis
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In the present world, power is an essential part of daily life. Most daily-use things are powered in some form. To provide people with electricity in a safe and reasonable manner, we must use the most advanced power technologies available. Harmonics increase the RMS of the circuit’s current flow, hence increasing the loss. This has caused several problems with the electrical systems. Harmonics can influence the whole distribution system, including the loads. Harmonics can also damage delicate offices and manufacturing gadgets and equipment. Harmonic flaws may not always be apparent at once, and it can be difficult to differentiate from normal wear and tear.
Definition of Harmonic Distortion
Due to their small size, harmonic issues may make the power supply less reliable. In power systems, electric current and voltage harmonics generate issues. When there are several harmonics in the power supply, equipment may malfunction or fail. A nonlinear load often induces harmonics, or fluctuations in the shape of the current waveform, in an electrical system. Personal computers, variable speed motors, driven motors, fax machines, laser printers, Switch-mode power supplies (SMPS), batteries, and uninterruptible power supplies generate nonlinear loads and harmonics in power systems (UPS (Uninterruptible Power Supplies)).
Why is Harmonic Analysis Necessary?
Harmonic reduces the reliability and efficiency of electrical systems. If you use harmonic analysis to name harmonics in your power system, your power system’s reliability will increase. As the use of power electronics equipment increases, non-linear currents are produced. Harmonics were generated because of the system’s demands. Equipment must use less electricity and meet energy efficiency requirements.
When Did the Importance of Harmonic Analysis Begin?
- If the total load or bus system measurements surpass 25% of the total load, the harmonic restrictions must be checked.
- To resolve harmonic-related issues, such as equipment damage or failure.
- When will the plant be extended, and by how many non-linear loads?
- Harmonic analysis must be performed when an extra capacitor bank is added to the electrical systems.
When a sinusoidal waveform hits a nonlinear load, the system experiences distortion and harmonic production. Harmonic analysis is commonly needed for finding the presence or absence of harmonics in a system.
Advantages of Eliminating Harmonics in the Power System
- Harmonic analysis reduces operating costs by decreasing the amount of energy lost through cables, switch gears, and safety systems. Additionally, it helps reduce power system losses.
- It decreases the RMS current in the power system and helps the elimination of oversized transformers, hence reducing the amount of cable, switchgear, and busbars needed.
- When losses are eliminated and the RMS current value is decreased, performance automatically improves. Harmonics increase losses, elevate the RMS value of current, and result in overheating of cables, transformers, motors, and capacitors. You may be compelled to stop a procedure or lose money as a result of the unsatisfactory results.
Method for Conducting an Analysis of Power Quality:
- To show non-linear loads, create a single-line graphic.
- Keep an eye out for the point of common link (PCC (Point of Common Coupling)).
- Bring to light the buses inside the facility that may be affected by harmonics.
- Collect as much information as possible on non-linear loads and the utility provider’s prior harmonics performance.
- Create a model using ETAP (Electrical Transient Analysis Program) software and the performance of the electrical system.
- Analyze the voltage and current distortion levels, as well as the harmonics.
- If the degree of harmonic distortion is excessive, select a remedy.
- Repeat the harmonic analysis after adopting the mitigation approach to verify CEC compliance.
CareLabs equips its personnel with cutting-edge technology so that they can assure the safety of your electrical equipment and give you a secure working environment. Learn more about the research and analysis services for harmonics offered by CareLabs and receive a quote now.
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