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High voltage circuit breaker automatic switching and reactive power capacitor compensation equipment

The HZS-BKS high voltage vacuum circuit breaker reactive power capacitor compensation equipment can automatically switch on or switch off the capacitor banks in accordance with the voltage and reactive power of the power supply bus, and carry out the reactive power compensation through tracking the changes in the load. In this way, the equipment is able to provide the power factor, improve the power supply quality and reduce the power loss.
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Product review

The HZS-BKS high voltage vacuum circuit breaker reactive power capacitor compensation equipment can automatically switch on or switch off the capacitor banks in accordance with the voltage and reactive power of the power supply bus, and carry out the reactive power compensation through tracking the changes in the load. In this way, the equipment is able to provide the power factor, improve the power supply quality and reduce the power loss. It shall be installed on the bus side of a 35kv substation or a 110kv substation. It is also can be installed in a substation pot of 6, 10, 22 or 35kv. In addition, it is also often installed in front of the control cabinet of a high voltage motor in the industrial and mining enterprise for performing the local reactive power compensation.

The equipment has the functions such as: the reactive power automatic compensation, the automatic tracking of changes in the reactive load, switching on or switching off the capacitor banks, improving the power factor, improving power quality; it has the suppression harmonic function: It shall be possible for the equipment to be equipped with the series reactors depending on the harmonic situation available in the field, so as to form a LC circuit to suppress the harmonics; the equipment has the perfect capacitor bank protection: it has the protections such as: the overvoltage protection, the undervoltage protection, the over-current protection, the zero-sequence voltage protection, the capacitor branch unbalanced voltage protection.

Demonstration of the type

Product model

The ambient conditions for uses

a. The outdoor ambient air temperature: -35℃ ~ +45℃

b. The relative humidity in the ambient air: 20% ~ 90% at 40℃;

c. The atmospheric pressure: 2000 m above sea level and below.

The requirements for the surrounding environmental

a. Strong vibrations and shocks shall not be allowed;

b. No corrosive and destructive gases, conductive media, media which contain any explosive dangerous shall be allowed, and serious mold shall not be allowed.

Product features

1. The equipment is able to perform the automatic compensation of reactive power and the automatic tracking of changes in reactive power of the load. The cycle coding of multiple capacitor bank (1 - 6 banks) is used to automatically perform the switch on and switching off of the capacitor banks, so the purposes of improving the power factor and improving the power quality can be realized.

2. The equipment has the function of suppressing the harmonic amplification. The series reactors shall be arranged according to the harmonic of the field, so as to form a LC series loop. In this way, the purpose of effectively suppressing the harmonic of the system can be realized.

3. The equipment has the four remote functions (the remote communications, the remote detection, the remote control and the remote regulation) and the communication networking functions. RS232 and RS485 interfaces are provided to realize the local control and management of the background machine.

4. Multiple protection functions are also available on the equipment, i.e., the over-voltage protection, the under-voltage protection, the over-current protection, the zero-sequence voltage protection, and the capacitor branch unbalanced voltage protection.

The main technical parameters

1. The rated voltage level: 6, 10, 22, 35 kv; the rated frequency: 50 Hz.

2. The parameters of the electric reactor are as follows: after the suppression of closing inrush has been performed, the reactance rate shall be generally 1%; after suppression of harmonics has been performed for 5 and more times, the reactance rate shall be 6%; after suppression of harmonics has been performed for 3 and more time, the reactance shall be rate 12%.

3. The device can carry out operation for a long period of time at a voltage which is 1.1 times as high as the rated working voltage.

4. The device can perform running continuously under an over-current whose square mean root does not exceed 1.3 times the rated current of the capacitor.

5. Each capacitor is equipped with a discharge coil, which can reduce the remaining voltage to below 50 V in 30 seconds.

6. The rated capacity is 600 - 9000kvar.

7. The anti-interference performance: It can withstand the attenuation shock wave pulse interference test, the frequency 1MHz, the voltage amplitude of working mode is 2500V and the voltage amplitude of differential mode is 1000v.

8. The mechanical service life: 50000 times.

Table of type selection

Equipment type

Compensation capacity (kvar)

Number of banks

Capacity per capacitor bank (kvar)

Number of cabinets

Cabinet dimensions Width * Depth * Height

HZS-BKS6-600/3-10

600

3

100+200+300

3

3000*1500*2650

HZS-BKS6-700/3-10

700

3

100+200+400

3

3000*1500*2650

HZS-BKS6-800/3-10

800

3

100+250+450

3

3000*1500*2650

HZS-BKS6-900/3-10

900

3

150+300+450

3

3000*1500*2650

HZS-BKS6-1000/3-10

1000

3

200+300+500

3

3000*1500*2650

HZS-BKS6-1100/3-10

1100

3

200+400+500

3

3000*1500*2650

HZS-BKS6-1200/3-10

1200

3

200+400+600

3

3000*1500*2650

HZS-BKS6-1300/3-10

1300

3

200+450+650

3

3000*1500*2650

HZS-BKS6-1400/3-10

1400

3

200+400+800

3

3000*1500*2650

HZS-BKS6-1500/3-10

1500

3

250+500+750

3

3000*1500*2650

HZS-BKS6-1600/3-10

1600

3

200+600+800

3

3000*1500*2650

HZS-BKS6-1700/3-10

1700

3

200+600+900

3

3000*1500*2650

HZS-BKS6-1800/3-10

1800

3

300+600+900

3

3000*1500*2650

HZS-BKS6-1900/4-10

1900

4

200+400+600+700

4

4000*1500*2650

HZS-BKS6-2000/4-10

2000

4

200+400+600+800

4

4000*1500*2650

HZS-BKS6-2100/3-10

2100

4

150+300+600+1050

4

4000*1500*2650

HZS-BKS6-2400/4-10

2400

4

200+400+800+1000

4

4000*1500*2650

HZS-BKS6-2700/4-10

2700

4

200+400+800+1300

4

4000*1500*2650

HZS-BKS6-3000/4-10

3000

4

200+400+800+1600

4

4000*1500*2650

HZS-BKS6-3600/5-10

3600

5

200+400+800+1000+1200

5

6000*1500*2650

HZS-BKS6-4200/5-10

4200

5

200+400+800+1200+1600

5

6000*1500*2650

HZS-BKS6-4800/5-10

4800

5

200+400+800+1600+1800

5

6000*1500*2650

HZS-BKS6-5400/5-10

5400

5

300+900+900+1500+1800

5

6000*1500*2650

HZS-BKS6-6000/5-10

6000

5

600+900+1500+1800+1800

5

6000*1500*2650

HZS-BKS6-6600/5-10

6600

5

900+1200+1200+1500+1800

5

6000*1500*2650

HZS-BKS6-7200/5-10

7200

5

900+1200+1500+1800+1800

5

6000*1500*2650

HZS-BKS6-7800/5-10

7800

5

1000+1200+1600+2000+2000

5

6000*1500*2650

HZS-BKS6-8400/5-10

8400

5

1000+1600+1800+2000+2000

5

6000*1500*2650

HZS-BKS6-9000/5-10

9000

5

1000+2000+2000+2000+2000

5

6000*1500*2650

Note:

a) The compensation capacities and the number of the compensation passages stated in the above shall be subjected to modifications depending on the customer needs.

b) For the capacity, only 9000kvar is listed in the above table. The excessive compensation capacities and the excessive number of the compensation passages can be customized according to the customer needs

A diagram of the system

A diagram of the system

The automatic switching high voltage vacuum contactor reactive power compensation capacitor equipment is mainly composed of the reactive power compensation controller (PFC) and the microcomputer capacitance protector (CXB), the current transformer (CT), the drop out fuse (FV), the thunder arrestor (FV), the discharge coil (TV), the high voltage AC vacuum contactor (KM), the electric reactor (L), the capacitor protection high voltage fuse (the configuration shall be made according to the capacitor banks) and the power capacitor bank (C) (the configuration shall be made according to the user’s load of power distribution) .

Installation mode:

Most of the equipment are to be installed indoors. The control cabinets and the capacitor cabinets are to be arranged in parallel. Generally. the control cabinets and the capacitor cabinets are to be arranged in parallel and connected through the main bus bar cabinets. The incoming lines of the control cabinets are to be connected to the bus bar of the cable and the bus bar where the load equipment are located.

In the case that the equipment is to be installed outdoor, the interconnection between cabinets is achieved generally through laying the cables in the cable trenches.

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