How to calculate the amount of power charge
transformer type: such as S7, S9, S11...
transformer capacity: such as 100kVA, 125kva, 315KVA...
transformer loss quick calculation table
power factor adjustment table
total active power of the current month
total reactive power of the current month
with the above conditions, it can be calculated manually, Now it's basically computer generated by the power supply company
the specific calculation method is as follows:
1. Divide the total reactive power of this month by the total active power, and calculate the power ratio
2. According to the power rate, check the transformer loss quick calculation table. Here, find out the value of copper loss and iron loss according to the transformer model, capacity and electricity of this month
3. Use the active power and reactive power of this month, plus copper loss and iron loss respectively
4. Divide the total reactive power by the total active power to calculate the actual power rate
5. According to the actual power rate, check the power factor adjustment table to calculate the percentage value of the power adjustment fee
6. Multiply the "percentage value" found by the catalog tariff, the positive number is the tariff to be increased, and the negative number is the tariff to be decreased
hope to help you.
type of transformer: such as S7, S9, S11...
capacity of transformer: such as 100kVA, 125kva, 315KVA...
transformer loss quick calculation table
power factor adjustment table
total active power of the current month
total reactive power of the current month
manual calculation can be made only when the above conditions are met, Now it's basically computer generated by the power supply company
the specific calculation method is as follows:
1. Divide the total reactive power of this month by the total active power, and calculate the power ratio
2. According to the power rate, check the transformer loss quick calculation table. Here, find out the value of copper loss and iron loss according to the transformer model, capacity and electricity of this month
3. Use the active power and reactive power of this month, plus copper loss and iron loss respectively
4. Divide the total reactive power by the total active power to calculate the actual power rate
5. According to the actual power rate, check the power factor adjustment table to calculate the percentage value of the power adjustment fee
6. Multiply the "percentage value" found by the catalog tariff, the positive number is the tariff to be increased, and the negative number is the tariff to be decreased
hope to help you.
Suppose that the active power is a, the reactive power is B, and the power factor is cos φ， Then
monthly average power factor: cos φ= A / root sign (square of a + square of B)
the power factor standard requires 0.9
power factor reward and penalty regulations: when the power factor is lower than the standard by 0.01, the penalty will be increased by 0.5% from the total electricity charge, which will be increased to 1% for each level lower than 0.7 and 2% for each level lower than 0.65; For every 0.01 higher than the standard, 0.15% of the total electricity charge will be awarded, and so on, the top will be 0.75%
the power factor adjustment meter with 0.90 as the standard value in Table 1 reces electricity charges and increases electricity charges actual power factor monthly electricity charges decrease% actual power factor monthly electricity charges increase% actual power factor monthly electricity charges increase% 0.900.00 0.89 0.5 0.76 7.0 0 0.91 0.15 0.88 1.0 0 0.75 7.5 0.92 0.30 0.87 1.5 0.74 8.0 0 0 0.93 0.45 0.86 2.0 0 0 0.73 8.5 0.94 0.6 0.85 2.5 0.72 9.0 0.95 ~ 1.00 0.75 0.84 3.0 0.71 9.5 0.83 3.5 0.70 10.0 0 0.82 4.0 0 0.69 11.0 0 0.81 4.5 0.68 12.0 0 0.80 5.0 0 0.67 13.0 0 0.79 5.5 0.66 14.0 0 0 0 0.78 6.0 0 0 0.65 15.0 0 0 0 0 0.77 6.5 power factor from 0.64 or below, each decrease of 0.01, the electricity charge increases by 2%. According to relevant regulations, the percentage of total electricity charge penalty is 19%
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