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Do you know the main output and standby output of diesel generator set?

In China, diesel generator sets are generally marked with the main power; in the world, the standby power (maximum power) is generally used.
In China, the main power is the nominal rating of diesel generator sets. The continuous power of a generator set refers to the maximum power that can be used continuously within 24 hours; the maximum power standard is: within a certain period of time, every 12 hours can be overloaded by 10% on the basis of continuous power for 1 hour, The unit power at this time is the maximum power, that is, the standby power.
For example, if you buy a 400kw main unit, you can run to 440kw in 1 hour within 12 hours. If you buy a spare 400kw unit, if you don’t overload it, you usually run it at 400kw. The unit has been operating in an overload state (because the actual rated power of the unit is only 360KW), which is very unfavorable to the unit, which will shorten the service life of the unit and increase the failure rate.
1) The unit of apparent power is KVA, which is used to express the capacity of transformers and UPS in our country.
2) The active power is 0.8 times the apparent power, and the unit is KW. Our country is used to power generation equipment and electrical equipment.
3) The rated power of a diesel generator set refers to the power that can be operated continuously for 12 hours.
4) The maximum power is 1.1 times the rated power, but only 1 hour is allowed within 12 hours.
5) The economic power is 0.5~0.75 times the rated power, which is the output power that the diesel generator set can run for a long time without time limit. When running at this power, the fuel is the least and the failure rate is the lowest.
Main power 1000KW diesel generator parameters and technical requirements
1. Electrical performance index of diesel generator set
1. Rated voltage 400/230 V (load voltage 380/220V), when the unit is at 95%～100% rated voltage, the following electrical performance indicators must be met. Main power / standby power 1000KW/1100KW
2, rated frequency 50Hz rated power factor 0.8 (lagging)
3, wiring method 3-phase 4-wire voltage regulator (%)
4, steady state≤±1 transient state≤+20∽-15
5, frequency regulator (%) steady state≤3 (0∽5) transient state≤+10∽-7
6, rated speed 1500r/min, recovery time≤6s, voltage fluctuation rate (%)≤0.5 frequency fluctuation rate (%)≤0.5
7. Load mutation voltage stabilization time (S)≤3 Load mutation frequency stabilization time (S)≤5
8. Waveform distortion rate (%) ≤ 5
9. Suppression of no red electricity interference meets the requirements of GB2820 and VDE0875-N

2. Technical requirements for diesel generating sets
1. The engine must be suitable for use with BS2869A1 or A2 and light diesel as fuel, water-cooled, four-stroke, direct injection, natural or pressure aeration, and meet the requirements of BS5514. The rated capacity of the engine must meet the requirements of BS5514 for continuous operation and generate electricity The rated capacity of the machine continues to operate.
2. The engine rated speed is 1500r/min, and its normal rotation direction must be counterclockwise.
3. Equipped with electronic speed regulation and speed stabilization device and overspeed trip mechanism, cut off the fuel when the speed exceeds 15%.
4. The cooling system is forced closed circulation water cooling.
5. The engine should be equipped with a manual parking lever.
6. The engine water jacket is equipped with an electric heater controlled by a thermostatic controller, and the water temperature is kept at about 20°C (or the temperature recommended by the manufacturer) to ensure that the engine is easy to start when needed; when the engine is put into operation, the heater should be immediately Cut off, there is a switch for manual control on and off on the control screen.

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