Gaoyun electric filter capacitor

Ningbo Gaoyun Electric Co., Ltd. is located in Ningbo, a modern port city of China. It is a member of China Electrical Industry Association, specializing in the production of 0.25-2kv medium and low voltage metallized power capacitors. The company has more than 70 employees, 12 professional and technical personnel, more than 30 sets of advanced production power capacitor equipment for filter capacitors, and 3800000 kvar self-healing power capacitors for cylindrical capacitors. Gaoyun company, which grew up with the power capacitor Committee of China electronic technology society, has gone through 20 years of ups and downs. Intelligent capacitors have formed a complete set of scientific management system through entrepreneurship and hard work.

{1} Filter capacitor is mainly used in iron and steel, metallurgy, chemical industry and places where harmonic current is generated. It can absorb the harmonic current generated by the nearby harmonic source, restrain the wipe wave and eliminate the "pollution" of power harmonic. This power filter device is a "passive" filter device, that is, the filter capacitor, filter reactor and resistor are properly combined to make the filter after precise tuning The device has low impedance to the high-order harmonic current of a certain frequency, so it can absorb the harmonic current locally. In the operation of the power filtering device, the harmonic source is connected in parallel, which not only plays the role of filtering, but also serves as the purpose of reactive power compensation.

{2} How it works

Filter capacitor http://www.nbdne.com is mainly composed of filter capacitor, filter reactor and other appropriate combinations into LC filter device. The filter not only functions as filter, but also as reactive power compensation. LC filter mainly includes tuning and filter, double tuning and filter, high pass filter, C-type filter, etc. In practical application, several groups of filters are designed according to the distribution and size of harmonic current and the demand of reactive power. Each group of filters has a low impedance corresponding to a harmonic wave. The high pass filter has a low impedance for the harmonic wave above the cut-off frequency. The C-type filter has the characteristics of wide modulation frequency band and low loss. The grouping of the filter needs to be calculated precisely, not only to filter out the main harmonic current, but also to meet the requirements of reactive power compensation. At the same time, it is necessary to prevent the harmonic current amplification caused by parallel shielding vibration between the filter and the system impedance at a certain integer frequency. The successful filter design software developed by our company can provide accurate filter scheme quickly and reasonably according to the specific characteristics of each user.

{3} Device features

1. Completeness

1.1 the company not only produces capacitors, but also reactors, so it has a strong advantage in the complete set of supporting facilities.

1.2 in the factory test of filter reactor, in addition to measuring the inductance and Q value of a single reactor at different frequencies, the actual tuning and effect of the whole set of device can be measured after connection, and the optimal state of the reactor's inductance tuning position can be adjusted to reduce the field work load.

1.3 the complete supply of filter device generally includes isolation Tianguan, grounding switch, lightning arrester, discharge loop, filter capacitor, filter reactor, resistor (as required), fuse, etc. High voltage switchgear and auxiliary facilities can also be supplied as required by users.

2. Capacitor

2.1 it is composed of more than one capacitor unit. The capacity of a single filter capacitor unit is generally 100, 200, 334 kvar single-phase structure to facilitate split phase tuning. If you have high requirements, you can also design according to other capacity.

2. 2 for 6-kV class, the capacitor can be installed in cabinet or fence type; for 35kV and above class, fence type installation is recommended. During cabinet installation, the capacitor is installed in the capacitor cabinet with good appearance; during fence installation, the capacitor and reactor resistor are all installed open, the capacitor is installed on the bracket, and the whole set of device is isolated by fence.

2.3 for the protection of 6-kV capacitor, the open triangle protection or neutral point unbalanced current protection is generally adopted, and the differential pressure protection is adopted for 35kV and above. In addition, each capacitor is connected in series with a spray type fuse for short circuit fault.

Ningbo Gaoyun Electric Co., Ltd. is located in Ningbo, a modern port city of China. It is a member of China Electrical Industry Association, specializing in the production of 0.25-2kv medium and low voltage metallized power capacitors. The company has more than 70 employees, 12 professional and technical personnel, more than 30 sets of advanced production power capacitor equipment for filter capacitors, and 3800000 kvar self-healing power capacitors for cylindrical capacitors. Gaoyun company, which grew up with the power capacitor Committee of China electronic technology society, has gone through 20 years of ups and downs. Intelligent capacitors have formed a complete set of scientific management system through entrepreneurship and hard work.