In our production and life electricity, we often hear the term power quality. It is an important indicator of the operating status of the power system, representing the stability and reliability of the power supply, and is closely related to the safety and efficiency of power equipment.

Under ideal conditions, the power system should provide a specified voltage level with a constant frequency and sinusoidal waveform. However, in actual production, a series of factors such as non-ideal component parameters, random changes in loads, imperfect control methods, faults and interference often lead to changes in power quality.

Generally speaking, the following three aspects affect the quality of power supply:

1. Natural factors: Lightning strikes, storms, rain and snow and other weather conditions cause damage to power equipment. This factor is usually unpredictable, and we need to conduct regular inspections and maintenance to reduce losses.

2. Operation of power equipment and devices: The start-up and shutdown of power equipment will cause instantaneous changes in grid voltage and current. The tripping and reclosing operations of automatic switches will also cause voltage fluctuations, which will also have a negative impact on the power quality of the grid. We need to operate in accordance with regulations and select power supply equipment from regular manufacturers.

3. Non-linear loads and impact loads: The operation of non-linear loads (such as frequency converters, arc furnaces, etc.) and impact loads (such as electrified locomotives, welding machines, etc.) will generate harmonic currents and harmonic voltages, which will pollute the power grid and affect the power quality of other users. In addition, the sudden start and stop of these loads will also cause fluctuations and flickers in the power grid voltage, affecting the power quality.

Not paying attention to the hazards caused by power quality will lead to production interruptions, equipment damage, and even personal safety risks. Especially some precision instruments with high requirements for voltage and harmonics, such as machine tools, medical equipment, and precision laboratory equipment.

To improve power quality, take the following measures

1. Improve the detection and management level of the power system, install relevant detection equipment, monitor the power status in real time, inspect and repair it on schedule to ensure its normal operation and avoid power quality problems caused by equipment failure.

2. Reasonably use power quality control equipment, such as reactive compensation devices, harmonic filters, voltage stabilizers, etc., to reduce voltage fluctuations, flickers, harmonics and other problems.

3. Optimize the design of the power system, optimize the circuits of each link such as power generation, transmission, transformation and distribution, and minimize the fluctuation of electric energy as much as possible.

4. Improve the awareness of power quality, improve the understanding of the importance of power quality through education and publicity, and use power resources reasonably.

Leilang Electric: Power Quality Improvement Program

As a power supply and power solution provider, how to improve the quality of power supply and improve the efficiency of power supply is our focus. For this, we have relevant mature product solutions. Here we select several representative products for introduction.

1. Reactor

Leilang reactor has passed ISO9001-2008 system certification/CE certification and other certifications, product quality assurance, complete specifications, suitable for photovoltaic, high-voltage starting, reactive power compensation and other multi-purpose occasions.

2. Rectifier transformer

The function of Leilang rectifier transformer is to provide AC power to the rectifier, and the rectifier then converts AC power into DC power, so as to provide DC power supply, with energy saving, low loss, low noise, strong impact resistance and short circuit resistance. It has the advantages of strong overload capacity, compact structure, small size, and reliable power supply.

3. Voltage stabilizer

Lei Lang voltage stabilizer can be used for any load, with the characteristics of large capacity, high efficiency, wide voltage stabilization range, high precision, strong protection function, no waveform distortion, and easy maintenance.