Reactive power compensation capacitors are now widely used in enterprises, transmission and distribution networks, urban buildings and other places, in order to improve the efficiency of power utilization, reduce electricity costs, ......
However, when selecting reactive power compensation capacitors, some key principles and factors need to be considered
1. Choose according to the demand for reactive power compensation
It is required when selecting reactive power compensation capacitorsDepending on the power factor and load factorto determine the reactive power compensationThe capacity and number of capacitors。When the power factor is low and the load factor is high, a capacitor with a larger capacitance is required.
Second, the power grid situation needs to be considered
power systemLoad changes, harmonic pollutionand other situations may be on the capacitorOperation and actual service lifeTherefore, the power quality requirements should also be considered when selecting capacitors.
Case in point: forThere are harmonicsis recommendedAnti-harmonic capacitors；ForThe overvoltage of the power grid is largeIt is recommended to chooseThe withstand voltage rating is highcapacitors.
3. Consider the operating environment
Capacitor pairs installed indoors or outdoorsAmbient temperature, humidityand other requirements will be different, so it needs to be based on the selectionSelect the appropriate capacitor for the actual operating environmentand pay attention to its dailyMaintenance
Fourth, consider the safety performance of the capacitor
Reactive power compensation capacitors may suffer from overcurrent and overvoltage in actual operation, so the capacitor itself needs to be considered when selecting the capacitorWithstand voltage capacity, over-voltage protection measures, over-current protection measuresand what can happenCapacitor failureand other factors.
It is recommended to select Yes when selecting a modelOver-temperature, over-current, over-voltage protection deviceThe operation of capacitor products will be safer and more stable.
5. Other factors
In addition to the above-mentioned parts, compensation capacitors also need to be considered when selecting -Capacitor size, mounting method, connection methodand other problems to avoid the situation that you can't use it when you buy it.