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The regulator is a device that, by measuring the power factor of the load, adds the required amount of capacitor to the circuit. In fact, this device detects how much capacitor should be connected to the circuit in order to obtain the desired power factor.
The working principles of the regulator:
Step 1) Measurement of active and reactive power
Step 2) Calculate the power factor using the COSQ=P/PS relationship
Step 3) Calculate the reactive power needed to reach the desired power factor
Step 4) injecting reactive Q kilovar into the circuit
Capacitive regulators are divided into two categories, smart and simple. The number of steps in the structure of the regulator indicates the number of capacitors needed to correct the power factor, which is available in the market from 4 to 12 steps.
Important points in adjusting the capacitor bank network regulator
1: The voltage intended for the regulator by the manufacturer should be the same as the mains voltage.
2: The current transformer to feed the regulator must be placed in the main power input to measure both the capacitor current and the load current.
3: The value of C/K should not be greater than the set value, otherwise the error rate will increase.
4: The value of C/k should not be lower than the set value, otherwise the error rate will decrease, but there is a possibility of fluctuation (switching on and off) of one step.
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Q: The capacity of the smallest step of the capacitor bank in terms of VARA reactive volts
V: grid voltage
K1: Current transformer conversion ratio
K2: Transformer voltage conversion ratio
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