Wuhan UHV specializes in producing series resonance (also known as variable frequency series resonance). Today, we will share with you why the component reactor in series resonance needs to be connected in series with a capacitor. Some customers often ask why reactors should be connected in series. It feels expensive and takes up a lot of space. In fact, the function of the reactor is very important. Reactors are also known as inductors. Reactors are mainly used to limit short-circuit currents. In addition, it can also be connected in series or parallel with power capacitors in the filter to limit high-order harmonics in the power grid.
In fact, the main function of series reactors is to suppress high-order harmonics or limit switch surges, prevent harmonic hazards to capacitors, and avoid excessive amplification and resonance when capacitors are connected to the power supply. Harmonics in the power grid. For the increasingly automated life, the harmonic problem in the power system is becoming more and more serious. We must take measures to deal with harmonics, as too high harmonics can seriously affect the normal operation of equipment and electrical systems.
For ultra-high voltage and long-distance transmission lines, the charging power of line capacitors is very high when unloaded or lightly loaded. Usually, the charging power will increase sharply. The enormous charging power not only causes an increase in the power frequency voltage mentioned above, but also increases the power and energy loss of the wires, and causes self excitation, as well as difficulties and other problems.
For example, electric arc furnaces, heavy-duty rolling mills, electric locomotives, etc. not only generate a large number of high-order harmonics during operation, but also cause voltage fluctuations and flicker. The three-phase imbalance is more severe. This not only reduces the safety of power equipment, but also seriously weakens and interferes with the economic operation of the power grid, posing a "public hazard" to the power grid. At this point, a series reactor is required to effectively resist the influence of harmonics.
When the ATO reactor is connected in series with the power capacitor, it can not only effectively absorb grid harmonics, but also improve the power factor of the system. In fact, for electrical environments with low harmonic content, connecting power capacitors and reactors in series is the most effective and economical way to improve power quality.
