Time: 2022-08-01 Author: 铧正 Click: 341 Time
Where are power quality analyzers generally used. It can be seen from the literal meaning that power quality refers to the quality of alternating current provided to users through the public grid. Generally speaking, it refers to the power quality of power grid lines. Power quality problems are mainly caused by the terminal load side. For example, the impact of reactive load will make the grid voltage fluctuate greatly and reduce the quality of power supply.
Where are power quality analyzers generally used? With the development of power electronic technology, it has not only brought positive aspects of energy conservation and energy conversion to modern industry, but also brought new and more serious damage to power quality due to the wide application of power electronic devices in all walks of life, and has become the main harmonic pollution source of power grid. Rectifiers, frequency converters, electric arc furnaces, electrified railways and various types of power and electronic equipment are increasingly used in the distribution network of individual users in the power grid system.
Affect or pollute the power grid. Cause voltage instability, overvoltage, harmonic generation, etc. Harmonics reduce the efficiency of power production, transmission and utilization, resulting in electrical equipment overheating, vibration and noise, insulation aging, shortening service life, and even failure or burning. Harmonics may also cause local parallel resonance or series resonance of the power system, so that the harmonic content is amplified, resulting in the burning of capacitors and other equipment.
The nonlinear, impact and unbalanced power consumption characteristics of these loads have caused serious pollution to the power supply quality. Therefore, eliminating high-order harmonics in power supply and distribution system is of great significance to improve power quality and ensure the safety, stability and economic operation of power system. On the other hand, modern industrial and commercial and residential users' electrical equipment is more sensitive to power quality, and puts forward higher requirements for power supply quality. At present, harmonics, electromagnetic interference and reducing power factor have been listed as the three major public hazards of power system.
When the power quality of the power grid is disturbed or polluted and cannot meet the relevant standards of China's development, we must improve the technical level of power quality management of the power grid. Where are power quality analyzers generally used? In order to understand the actual working situation of power quality in the power grid, corresponding equipment is needed for control and test data analysis, which requires the use of power quality analyzer.