Everything in the water park equipment is supplied by the water circulation to supply lubrication, and the power source of the water circulation is directly supplied by the water pump! Then the water park computer room uses a variety of pumps and circulating pumps with different powers, ranging from tens of kilowatts to tens of kilowatts. Hundreds of kilowatts, plus the other equipment in the park, which brings a series of loads to the power grid is not small, resulting in large voltage fluctuations! Then our pump startup mode is particularly important, according to the starting load , starting torque, use environment, we are roughly divided into several types:
1. Direct start - When the pump power is less than 18.5KW, it can be started directly. This method is the most direct and economical way to start, there is no technology at all.
2. Step-down start--When the pump power is greater than or equal to 18.5KW, the voltage must be started according to the standard. The step-down can reduce the shock fluctuation of the instantaneous starting current of the high-power equipment to the power grid. Common buck start mode can be divided into: star triangle buck, auto-coupled buck, soft start buck. Because the buck start has its own advantages and costs, soft start is better than others and the most expensive.
3, frequency conversion start--the best starting mode of the electric equipment, there is no limit on the use of the power range, basically can adapt to the complex requirements of any place, the starting current small torque can also be adjusted! The only drawback is that the inverter cost is expensive, The electric control cabinet using the inverter is expensive. The inverter startup has the same phase as the step-down startup, but the inverter can also be frequency-modulated. The biggest difference here is their difference.
In summary, if the start-up requirement is high, it is best to use the variable frequency start. In general, you can choose the normal buck start. No matter which kind of startup method is in the end, it is to reduce the impact of the starting current of the electrical equipment on the power supply grid. It is the original intention of designing many startup methods!
1. Direct start - When the pump power is less than 18.5KW, it can be started directly. This method is the most direct and economical way to start, there is no technology at all.
2. Step-down start--When the pump power is greater than or equal to 18.5KW, the voltage must be started according to the standard. The step-down can reduce the shock fluctuation of the instantaneous starting current of the high-power equipment to the power grid. Common buck start mode can be divided into: star triangle buck, auto-coupled buck, soft start buck. Because the buck start has its own advantages and costs, soft start is better than others and the most expensive.
3, frequency conversion start--the best starting mode of the electric equipment, there is no limit on the use of the power range, basically can adapt to the complex requirements of any place, the starting current small torque can also be adjusted! The only drawback is that the inverter cost is expensive, The electric control cabinet using the inverter is expensive. The inverter startup has the same phase as the step-down startup, but the inverter can also be frequency-modulated. The biggest difference here is their difference.
In summary, if the start-up requirement is high, it is best to use the variable frequency start. In general, you can choose the normal buck start. No matter which kind of startup method is in the end, it is to reduce the impact of the starting current of the electrical equipment on the power supply grid. It is the original intention of designing many startup methods!
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