Harmonics Dangers

Power quality degradation
Harmonic currents interfere with the sine wave patterns in the power grid, leading to distorted voltage and current waveforms, thereby reducing the quality of electrical energy. This can have adverse effects on the user's electrical equipment, potentially leading to damage.
Equipment wear and tear is on the rise.
Harmonic currents generate additional losses in equipment within the power grid, which can lead to increased temperatures and affect the lifespan and performance of the equipment.
Heat Effect
Harmonic currents also produce additional heat within conductors, leading to increased conductor temperatures. Under high-temperature conditions, the insulation performance of conductors deteriorates, making electrical faults more likely to occur.
Noise Pollution
Harmonic currents produce electromagnetic noise in the power grid, affecting the tranquility of the surrounding environment. Prolonged exposure to a noisy polluted environment can have adverse effects on people's physical and mental health.
5. Impact on Stable Operation of the Line
Power lines and transformers in power supply and distribution systems are typically protected by electromagnetic relays, inductive relays, or transistor relays for detection, but these relays are susceptible to harmonic interference, leading to incorrect operation or failure of relay protection, posing a serious threat to the stable and safe operation of the power supply and distribution system.
6. Impact on Grid Quality
Harmonics can distort the voltage and current waveforms of power grids. In civil distribution systems, the neutral line can generate a large amount of odd-order harmonics. In three-phase distribution lines, harmonics that are multiples of 3 on the phase lines will superimpose on the neutral line, potentially causing the neutral line current to exceed the phase line current. Additionally, harmonics of the same frequency can produce active and reactive power of the same order as harmonic voltage and current, thereby reducing the grid voltage and wasting grid capacity.