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:1ã€standard
type 2ã€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*3ï¼****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:
the required compensator kilovar
which improves the power factor from it in COSΦ1to it in COSΦ2 per
KW load can be got from table 4. The compensation capacity can be
got by the kilovar multiplying the power of the motor.