• Product Name
  • Product Keyword
  • Product Model
  • Product Summary
  • Product Description
  • Multi Field Search
You are here: Home / News / Technical news / 4 Sets 2750KVA MTU Diesel Generator for Water Treatment Plant

4 Sets 2750KVA MTU Diesel Generator for Water Treatment Plant

Views:8     Author:Site Editor     Publish Time: 2019-11-29      Origin:Site

4 Sets 2750KVA MTU Diesel Generator for Water Treatment Plant Capacity Caculation

 

Conclusion SG max=6074.169KVA=4860KW, that means it requires the generator set capacity reaches or exceeds 4860KW,

and so the voltage drop will be 22.68%.  So 2*2750KVA/2200KW (4400KW) can’t drive 130MLD pumps.

Specification

1. Driven: 130MLD ONE SET  booster pump &basic load of the station.

   Booster pump power: 2850KW, voltage &frequency: 6.6KV&50HZ,

   Start motor current = 2.5 times higher

   Block Load = Transformer load (no.6, 3 & 4)

                      = 300kVA + 500kVA + 500kVA

                      = 1300kVA

2. Herein considering drive the pump first and then basic load, all the loads will be started by sequentially,

   the basic load is not considered for the capacity requires here. Please check Form1.2.3.4

 

Generator Capacity Calculation & selected model notes.

This Calculation is made by Hiersun Group( Engineering dept.) by theory only.

1) Weather it can drive the motor also depended by the motor’s efficiency, power factor, heat lost, allowable voltage drop, starting current time, start times, starting process and so on. So for sizing up the diesel generator capacity requires the motor manufacturer and projector to work together. Also different starting mode will impact the result. For example the frequency conversion, the equipment will has nonlinear harmonics surge. So when a  variable-frequency drive connected, we advise the 2 times current base on the rated capacity. The above calculation mode is the experienced method for sizing up a diesel generator capacity.

2) When motor starting, the bus voltage drop is related to the motor’s max power, we need to calculate he voltage drop for controlling the power system voltage drop when starting.

3) This calculation counts the single load starting capacity only, but actually if the interval between each load is too short, they impact each other.

4) Diesel generator operation is advised under about 80% power output based on the prime nominal power to keep a well running situation.

 

 

Emergency Load List

NO.1

Name


  Equipment
  Count


  Volt
  (KV)

Rated
  Power
  (kW)


  Efficient
  η

Demand
  Factor
  K

Power Factor cosΦ

tgΦ

Pjs
  (kW)

Qjs
   (kvar)

Sjs
   (kVA)

Starting Order

1

For booster Pump

Continuous

6

2850

0.92

1

0.85

0.619744

3097.826

1919.86

3644.501

1

2

For High-Pressure Fuel Pump

Continuous

0.38

1040

0.8

1

0.8

0.75

1300

975

1625

2

 

Load Specification

Rated Capacity
   Pe(kW)

VOL.Ve(kV)

Efficient  η

Power Factor cosΦ

Starting Power factor cosΦq

Starting Current timesβ

Starting current factor Ki

Demand Factor Kd

Active Power P(kW)

Reactive Power Q(kvar)

Apparent
  Power S(kVA)

Start Active Power Pq(kW)

Start Reactive
  Power Qq(kvar)

Start
  Apparent
  Power Sq(kVA)

2850

6

0.92

0.85

0.4

2.5

1

1

3097.826087

1919.8602

3644.501279

3644.501

8350.601

9111.253

1040

0.4

0.8

0.8

0.4

1

1

1

1300

975

1625

650

1489.337

1625

 

 

FORM1&FORM2

 

 

 

DIESEL GENERATRO PARAMETER

TYPE

Mode

Rated Capacity

Voltage

Power Factor

x'd

xd

x"d

Summited Voltage



SG(KVA)

V(kV)

cosQG

ΔV(%)


Emergency

6000


0.8

0.25

2.39

0.15

0.25

 

FORM3

 

NO

Starting order

S1

S2

S3

S4

Smax

ΔV

1

0

0

0

0

0

0

0

2

1

3644.501279

6074.168798

5466.751918

4141.479

6074.169

0.232957332

3

2

5265.082121

3377.627469

975

4258.893

5265.082

0.051383399

4

3

5265.082121

3510.054748

0

4997.53

5265.082

#DIV/0!

5

4

5265.082121

3510.054748

0

4997.53

5265.082

#DIV/0!

 

 

FORM4 ( Contact us for more information)


 

 


PRODUCTS

INDUSTRIES

SUPPORT

Copyright © 2019 Guangzhou Hiersun Power Generation Limited. All rights reserved
粤ICP备17064060号 广州市恒至莱信机械设备有限公司
--------------------------------------------------->