The Safety And Function Of Reactors

1. Reduce the surge multiple, surge current, and frequency of a capacitor bank.
By reducing or decreasing the surge multiple and frequency of a capacitor group, the function of protecting capacitors can be achieved. By adding a series reactor, the closing inrush current can be suppressed below the square root of the reciprocal of the 1+reactance rate. The national standard GB50227-2008 requires that the excitation inrush current should be limited to within 20 times the rated current of the capacitor (usually around 10 times). In order to avoid harmonic amplification (harmonic traction), the volt ampere characteristics of the series reactor should be as linear as possible.
2. Improve the quality of electrical energy
The resonant circuit is composed of a full capacitor bank for harmonic filtering. Afterwards, a series of filtering reactors and inductors are combined with tuning capacitors and capacitors, characterized by harmonic AC filters, in which a specific harmonic is filtered out, thereby reducing the high-order harmonic distortion of the voltage on the bus and reducing the harmonic current of the secondary line elements, thus achieving the effect of improving power quality.
3. Suppress characteristic subharmonics.
The premise is to have a clear understanding of the harmonic situation in the power grid, whether there are large rectification equipment, electric arc furnaces, rolling mills and other harmonic generating loads in the surrounding power users, whether there are high-performance high-voltage transformers and motors, and try to measure the actual value of the harmonic reduction in the power grid as much as possible, and then configure appropriate reactors based on the actual harmonic components.
4. Protecting electrical systems:
To reduce the discharge current of capacitor bank faults and protect power capacitors.
In order to ensure personal and equipment safety, there are the following requirements for electrical equipment in terms of safety technology:
1. Reliable protective measures should be taken for live equipment that is exposed to the ground and easily accessible to people.
2. The live parts of the equipment should maintain a certain safe distance from the ground and other live parts.
3. Power systems that are prone to overvoltage should have process voltage protection devices such as lightning rods, lightning conductors, lightning arresters, and protective gaps.
4. Low voltage power systems should have grounding and neutral protection devices.
5. Different types of protective measures such as installing high-voltage fuses and circuit breakers should be taken for various high-voltage electrical equipment; Corresponding low voltage electrical protection measures should be taken to protect low-voltage electrical equipment.
6. Safety signs should be installed at the installation site of electrical equipment.
7. According to the characteristics and requirements of certain electrical equipment, special safety measures should be taken.