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The formula for calculating the electricity bill is:
Electricity Charges, Basic Electricity Charges, Electricity Charges, Power Factor Adjustment Charges;
Basic electricity cost Equipment operating capacity Basic electricity price, with months as the settlement cycle, your transformer is 315kva, in Beijing, the basic electricity price at this stage is 20 yuan per thousand volt ampere per month, then you should pay the basic electricity fee = 315 20 = 6300 yuan per month;
The smaller your electricity consumption, the less this electricity bill;
If you are an industrial user, the assessment standard for power factor adjustment electricity charges is; If your power factor is higher or lower than the assessment standard, the monthly electricity fee will be calculated according to the prescribed electricity price, and then the electricity fee will be increased or decreased according to the percentage specified in the "Power Factor Adjustment Electricity Tariff Table" stipulated by the state; For details on how to adjust electricity tariffs, please refer to the following sections.
The "fine" you are talking about may refer to the power factor adjustment, because the power factor is less than the increase in electricity expenses, in this case, you can install power capacitors for manual compensation to improve the power factor value.
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The state stipulates that the power factor shall not be lower than the lag, that is, 315kva*, if the power factor is lagging 07, the power of the transformer is: 315kva*, which shows how much influence the power factor has on the output power of the transformer, the power factor is lower than the lag, the use of the transformer efficiency decreases, and the use of too much reactive power affects the efficiency of the entire power grid. It will be fined, and the reactive power will be used to compensate the reactive power system if the reactive power rises to within the lag.
If the power factor is ahead, the transformer voltage will increase, and the threat to the grid will also be fined, and the best thing is to control it within the lag.
The power of the transformer (apparent work, also known as performance work) = the sum of reactive power + active power. The basic electricity tariff is the amount of active power. No reactive power is charged for domestic electricity.
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Summary. The basic electricity fee can be calculated according to the capacity of the transformer, or according to the maximum demand, and the specific calculation method is chosen by the user. Calculation formula:
The basic electricity fee calculated according to the transformer capacity = 23 yuan kVA transformer capacity.
Basic electricity charge calculated according to the maximum demand = 32 yuan kW maximum demand.
How is the basic fee of 315 transformer calculated.
The basic electricity fee can be calculated according to the capacity of the transformer, or according to the maximum demand, and the specific calculation method is chosen by the user. Calculation formula:
The basic electricity fee calculated according to the transformer capacity = 23 yuan kVA transformer capacity.
Basic electricity charge calculated according to the maximum demand = 32 yuan kW maximum demand.
There are two billing methods for basic electricity charges: 1. According to the maximum demand; 2. According to the transformer capacity. The standards for collecting and transporting auspicious fees are different in each province, please go to the local power supply business hall to understand (there are brochures in the side of the company that can be obtained by yourself).
The standards of Jiangsu Province are: 1. According to the maximum demand, 40 yuan per kW per month; 2. According to the amount of transformer capacity, 30 yuan per KVA per month.
Treat each case on a case-by-case basis.
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How many kilowatts of power of 315 transformer how to calculate. Hello:
KVA's three-phase transformer has a rated output current of 315kVA (. The output voltage of the power transformer is standard.
2. If the load is resistive (such as electric heating device), then the 315kVA transformer can output 315kw of power; If it is a motor-driven device, the 315kVA transformer can load 315 power factor efficiency of the output power.
3. The output of the transformer is the apparent power, which cannot be directly converted into active power. Therefore, the nameplate of the transformer is marked with the output current, not the active power (W)!
How to calculate transformer powertransformer power = output voltage x output current.
EG: A transformer with an output voltage of 36V and a current of 2A according to the circuit requirements, 36Vx2A = 72W (transformer power).
How to calculate the power of transformer iron is proportional to the cross-sectional area of the iron core, proportional to the area of the window, proportional to the "copper capacity coefficient of the window" of the winding process, proportional to the maximum magnetic flux density b, and proportional to the working frequency f.
For the GEI core series of standard windows, the traditional winding process, and the small power transformer under the power frequency voltage of 50Hz, the formula S= is used to estimate the required core cross-sectional area.
How many kilowatts of power can be used for a 500kva transformer. 500kVA transformer:
At a load power factor of 1, the rated load capacity is 500 kW.
When the load power factor is , the rated load capacity is 500* kW.
When the load power factor is , the rated load capacity is 500* kW.
And so on. How much power does the transformer of 48 kilowatts use a step-down no-load or light-load starting motor, which can be used with a capacity of 50kva, and if it is started with load, it needs to be equipped with at least 100kva.
How many kilowatts can a 315 transformer carry when the power factor is 315kva=315kw, and when the power factor is 315kva=.
309kw1, the power factor of the transformer itself: the transformer is a kind of stationary motor with a high power factor, and its power factor can generally be reached. According to the power formula p=scos there is p=scos =315
2. The power factor required by the power supply department: the power supply department requires the user to reach the power factor of the line after reactive power compensation.
3. The internal power supply of the factory: At this time, the power factor of the transformer is most affected by the main electrical motor of the factory, and the power factor of the motor is low.
In the case of a purely resistive load, then the 315 transformer can carry 315 kW. In fact, there is an inductive (motor-like) load in the circuit, so the line power factor is less than 1. Then, the 315 transformer can carry a load of (315*power factor) kilowatts.
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Why do you need to charge the basic electricity fee for transformers above 315kva for power supply is to make up for the loss of the power supply company, hello dear, transformers above 315kva charge basic electricity charges. The basic electricity charge refers to the electricity charge calculated according to the customer's electricity capacity, which is applicable to large industrial customers. The basic electricity charge can be based on the transformer capacity or the maximum demand.
Where the utilization rate of the transformer reaches 67% or more, regardless of the size of the capacity, the basic electricity fee shall be calculated according to the maximum demand, and when it is less than 67%, the basic electricity fee shall be calculated according to the capacity of the transformer. Customers with a tentative transformer utilization rate of 67% and plus or minus 10% can choose their own billing method. According to the business rules of power supply, generally speaking, users of 315kVA and above charge the basic electricity fee, also known as the capacity electricity fee.
It is charged according to the capacity of the transformer, 10 (hypothetical) yuan per kva, no matter how much you actually use, the basic electricity fee remains the same, and the actual electricity consumption is calculated and charged according to the billable electricity price. Regardless of the capacity of the utility transformer, there is no basic electricity charge. Hope it helps.
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There are two billing methods for basic electricity charges: 1. According to the maximum demand; 2. According to the transformer capacity.
The charging standards vary from province to province, please go to the local power supply business office to understand (there are brochures that can be obtained by yourself).
The standards of Jiangsu Province are:
1. According to the maximum demand, 40 yuan per kW per month; 2. According to the transformer capacity, 30 yuan per KVA per month.
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315kVA three-phase transformer, rated output current: 315kVA (. The output voltage of the power transformer is standard 400V).
1. If the load is resistive (such as electric heating equipment), then the 315kva variable voltage changer can output 315kw of power.
2. If it is a device driven by a motor, the 315kva transformer can load the output power of 315 power factor efficiency.
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KVA's three-phase transformer with a rated output current of 315 kva kv) a[The output voltage of the power transformer is the standard kV (400 V)]—2, if the negative spike is resistive (such as electric heating equipment), then 315....
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Summary. Hello This is a very good question, I need a little time to answer, please be patient.
Hello This is a very good question, I need a little time to answer, please be patient.
315 kVA three-phase transformer with a rated output current of 315 kVA (kV) a[The output voltage of the power transformer is the standard kV (400 V) of the excavation and seepage standard
How it came. It's the formula oh.
The calculation method in the electricity bill is as follows: first calculate the total active electricity in this month and subtract the total active code in the previous month to get the number of codes in this month, and then multiply it by the metering multiplier to calculate the total electricity number p in this month; In the same way, the reactive power Q1 and the reverse reactive power Q2 are calculated. >>>More
The power factor is a further measure of the circuit on this basis, power factor = active power apparent power. Therefore, the maximum value of the power factor is 1. China also has strict regulations on power factor, transformers above 100kva, power factor shall not be lower; The power factor of agricultural users shall not be less than; The power factor of other electricity users shall not be less than. >>>More
If you are using an automatic reactive power compensator, you can see if the capacitance compensation display is fully invested when the power factor is used, if not, the compensator is broken, or the compensator parameter setting is wrong. >>>More
Hehe. If you already have an off-the-shelf power distribution device that also has a compensation device, then you should set the power factor removal point of the compensation device at it. That is to say, when compensating, when the power factor is exceeded, the capacitor will not be invested, and the capacitor will be cut off if it is higher. >>>More
It is the ratio of the input power of the transformer to the nominal capacity, see the calculation method in the annex for details. >>>More