WBB series of high voltage reactive power compensation cabinet

WBB series high voltage reactive power compensator

â… . General

WBB series high voltage reactive power compensator is a capacitive reactive power compensator for improving the power factor, adjusting the voltage and lowering the consumption of the network, which is mainly applicable to the electric power system of voltage class 6KV to *0KV.

Because most of the loads in the electric power system are perceptual and more and more power electron equipments are used in industrial and mining enterprises, the power factor of the electric network is quite low. The lower power factor reduces the use factor of the equipment, while increases the investment of the power supply and the line loss, as well as harms the quality of the voltage and shortens the service life of the equipment.

To improve the factors unbeneficial to the production caused by quite low power factor of the electric network, must improve efficiently the power factor of the electric network. Obviously, if these reactive power are all supplied by the generator and transmitted by distant is not reasonable, also impossible in usual. The reasonable method is to produce the reactive power where it is required. Most of the loads are asynchronous motors in the actual electric power system. Its equivalent circuit can be taken as the series circuit of the resistance and the inductance, while its phase position of the voltage and the current is bigger with lower power factor. After parallel connecting the capacitor, the phase position of the voltage and the current become smaller in order to improve the power factor.

WBB series high voltage reactive power compensator is widely used in metallurgy，mining, construction, petrochemical industrial and mechanism and so on for local compensation for large power high voltage motors and for the centralized compensation for the distribution system.  

 

â…¡. The problems can be solved by WBB

When you meet the following problems, WBB series high voltage reactive power compensator produced by our company can effectively solve the problems for you to get you satisfactory results.

1. The power factor of the enterprise electric network is low and the enterprise has even been punished by the power supply bureau. The power factor needs to be improved.

2. The voltage of the enterprise substation is low, and the voltage of the electric network needs to be increased.

3. The line loss of the transmission circuit is too large. It needs to be reduced to save the cost on the transmission circuit and the consumption of the transformer needs to be reduced to save the electric energy.

4. Electrical equipments put to use lately, the compensation of reactive power needs complement.

5. The output power of the equipment can not reach the rated power because of the low power factor.

6. The quondam compensator is too old to meet the techniques requirement

7. The load increased, but the quondam capacity of the transformer or the quondam distribution circuit can not meet the requirement because of the over consumption of the reactive power. The apparent output of the power supply needs to be reduced to increase the supply capacity.

8. The voltage of the electric network is sometimes high and sometimes low, which affects the operation of the equipment.

9. The perceptual loads (like motor) in the output system of the transformer are many, while the compensation units are required.

*0. The power factor of the enterprise electric network is low. The power factor needs to be improved and the circuit current needs to be reduced to prolong the service life of the electrical equipments. And the section specification of the conducting wire needs to be reduced to save the investment.

 

â…¢. Performance characteristics

1. Adopting high quality brand elements and advanced design, long service life of the products

2. Reasonable arrangement and humanization design, with convenient operation, usage and maintenance

3. Own discharging unit protects the safety of the human body and the equipment.

4. With the functions of open triangle, over current and over load protection and so on make the operation safe and reliable.

5. Adopting vacuum electroplating film metal polypropylene film parallel connecting capacitor, with low self-consumption because of the high service field density, low medium consumption, small volume, large capacity, low consumption and light weight and so on features of the polypropylene film

6. The deviation of the actual measuring capacity from the rated value does not exceed **0ï¼…to *5% of the rated value.

7. The series reactor can be added to limit the impulse in switching-on process of the capacitor bank and to limit the operation over voltage as well as to suppress the influence of the upper harmonic on the capacitor in the electric network.

8. Obvious energy saving results: Improve the power factor to more than 0.*5, and reduce the current to *0％～*0％，as well as reduce the line loss efficiently.

9. Low own consumption: The capacitor used in this device is with extreme little energy loss which is less than one fifth of the usual oil low capacitor.

*0. With mature consideration of the actual condition for the user, the capacitor bank of the local compensator and the relative control unit are placed in the same cabinet for the convenient installation and usage of the single machine of the high voltage motor local compensating.

 

â…£. Quick type-selecting

WBB series compensator supplies you with two different types and *6 specifiations. The matching units can be muli-chosen. Speciall requirement can be back-attached.

 

WBB  

 

                                       Scheme type：1、standard type 2、withreactor

                                       Rated capacity (Kvar)

                                       Rated voltage (KV)

                                       Compensation type：1 in situ 2 centralized

                                       Product code

 

 

Tips: the aboveitemshave to beclearly identified in type selecting, so that the equipment we supplied can satisfy you best.

 

â…¤. Capacity determination

Determine the compensation capacity first before selecting the type, and then determine the type of the compensator according to the electric network voltage on site.

The followings are the determination methods for the compensation capacity:

1. Theoretical calculation

Determine the compensation capacity by theoretical calculation according to the rated parameter of the motor or the actual measured data. Due to the compensating principle: the compensation capacity can be calculated as the following formula:

hereinto：

P- the rated power or the actual measured power of the motor

COSΦ*- the rated power factor or the actual measured power factor of the motor

COSΦ*- the power factor the motor needs to reach after compensating

E.g. one YRl*3／****4 high voltage motor, of rated power **0KW, rated power factor 0.*4. If the required power factor after compensating is 0.*6, what is the compensating capacity?

The required compensating capacity is:

Thus WBB*****0 is the proper type of the compensator.

2. Coefficient method

the compensation capacity can be determined by coefficient method：