The power distribution problem is urgent!
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This post was last edited by Zeng Hong1986 at 2010-3-20 14:34. A company’s power distribution system diagram: There are 2 30KW cooling water tower pumps, 2 18.5KW liquid alkali pumps, 37KW fire water pumps, 7.5KW water pumps, 7.5KW cooling water tower pumps, and 2 7.5KW paraffin pumps. Two 5.5KW hydrochloric acid pumps, one 5.5KW well water pump, and two 4KW hydrochloric acid circulating pumps. The mobile air compressor is 7.5KW, the driving power supply is 5.5KW, the total equipment power is calculated to be 236.5KW, the calculated power is 139.5KW, and the calculated current is 265. Reactive power compensation 6 * 15KVA. How do you calculate the current and power? Dear friends, please help me. I hope there is a specific description of the algorithm
It is load calculation. It can be found in any design manual. Search and download "Industrial and Civil Power Distribution Design Manual" on the site. Please refer to the third page of Chapter 1.
I made a reference, but I can’t figure out the number above? please advise
The result of my calculation is that the total installed capacity is 201.5KW and the operating capacity: 164.5KW, active power: About 131.6KW, calculated current: 250A，4x16kva。 I don't know if I can meet your request.
I don’t know about the 2 cold water pumps, 2 hydrochloric acid pumps, etc. mentioned above by the poster. One of them is a spare one, or it must be used in the process. If one is on and one is on standby, only one of the motors needs to be counted.
Calculate the active power = the sum of the actual power used, and then multiply it by the simultaneous use coefficient. Excludes backup and fire protection. Calculate the current according to the formula I=S/square root 3.
Two of the devices should be used one for use and the other for backup.
When calculating, consider the operating mode and coefficients of the equipment. For example, when one is in use and one is in standby, you can only calculate the capacity of one unit to ensure economy.
4# laura-hy How to calculate operating capacity and active power? Are my results always different? please advise
4# laura-hy Just use the need coefficient method to find it, right? When calculating the computing load, one of the two units is counted as one running and one in standby. The demand coefficient of the pump is multiplied by 0.8, but not for driving. Then find the active power and reactive power. Can you describe the calculation process to me? Many thanks! Thank you! Thank you so much