Harmonic Analysis of the Brazil Power System:
Power is an important aspect of existence in the contemporary world. Most products we use daily are powered in some way. We must utilize optimal power systems to deliver electricity that is both inexpensive and secure.
Several concerns with the power systems have been noticed because of harmonics, which raise the RMS of the current flow in the circuit and hence increase loss. Harmonics may affect the whole distribution system, right down to the loads. Harmonics can also cause damage to delicate appliances and equipment in your industrial or commercial building. In certain instances, the presence of a harmonic failure is not immediately obvious and cannot be separated from the appliance’s regular ageing.
Harmonic Distortion Definition:
If harmonic difficulties emerge, their limited scope might affect the reliability of the power supply. It is the electric current and voltage harmonics in the power systems that cause problems. High harmonic levels in power systems can cause equipment failure or damage. Harmonics, or distortion of the current waveform, are often caused by a non-linear load in an electrical system. Personal computers, variable speed motors, driven motors, fax machines, laser printers, Switch-mode power supplies (SMPS), batteries, and uninterruptible power supply (UPS) are examples of non-linear loads and harmonically generated loads in power systems.
The Importance of Harmonic Analysis:
Harmonic decreases the performance and quality of electricity systems. Using harmonic analysis to detect harmonics inside the power system will boost the system’s dependability. Frequent usage of contemporary power electronics equipment leads to nonlinear currents. As a result, harmonics are produced as a function of the system loads. Equipment and equipment must be energy-efficient and comply with energy-saving requirements.
When Was Harmonics Analysis Required?
- If load readings surpass 25 percent of a circuit’s total load or bus system, the harmonic limitations must be checked.
- To handle harmonics-related concerns such as equipment damage and malfunction.
- The date the plant will be expanded and the quantity of non-linear loads to be added.
- Harmonic analysis is necessary when the extra capacitor bank is added to the electrical systems.
| The equipment's classification | A harmonious outcome. |
|---|---|
Rotating apparatus |
Enhanced cable resistance, power loss, overheating, and torque pulsation. |
The installation of power wires, switchgear, and a transformer. |
Overheating, increased consumption, neutral overload, and power losses result from neutral circuit overload. |
Electric capacitors |
A high current breakdown |
Electronic power |
Inefficiency and failings |
Protecting relays |
Misconduct and annoying tripping |
When a sinusoidal waveform interacts with a nonlinear load, distortion and harmonic production are produced in the system. Harmonic analysis is often required whenever it is essential to discover the presence of harmonics in a system.
Power System Harmonics Mitigation Benefits:
- Harmonic analysis reduces the power losses of cables, switch gears, and safety devices, hence lowering operational expenses. In addition, it helps reduce power system losses.
- It minimizes the RMS current in the power system and helps eliminate transformer oversizing, which in turn reduces the requirement for cable, switchgear, and busbars, resulting in lower capital expenditures.
- Increased losses, a higher current RMS value, and overheating of cables, transformers, motors, and capacitors are all effects of harmonics. The undesirable outcomes may result in a process stoppage and monetary loss for you.
Methods for Conducting an Analysis of Power Quality:
- Obtain the one-line figure to emphasize the non-linear loads.
- Pay close attention to the common connection point (PCC).
- Draws attention to the plant buses that may be affected by harmonics.
- Compile all information pertaining to nonlinear loads and the utility provider’s past harmonic performance.
- Create a model using ETAP (Electrical Transient Analysis Program) software and the performance of the electrical system.
- Verify the voltage and current distortion levels and conduct harmonic analysis and investigation.
- If the harmonic distortion exceeds the permissible level, choose a mitigation approach.
- After using the mitigation method, rerun the harmonic analysis to ensure CEC compliance.
CareLabs equips its professionals with the most modern gear to ensure the security of your electrical equipment and offer you a dependable operating environment. Learn more about CareLabs’ harmonic research and analysis services and request a price right away.
