How to calculate the annual power consumption of the transformer?

The annual loss of the transformer is calculated in two parts: no-load loss and load loss.

The annual no-load loss is determined by the transformer.

The no-load loss of the device is multiplied by the annual operating hours; Load loss is related to current or load (apparent power.

in proportion to the square. The annual load loss of the transformer can be calculated by calculating the annual operating hours under various loads (depending on the power) through the statistics of the transformer's operating load.

The transformer converts the AC voltage and alternating current.

and impedance of the device, when the primary coil is passed.

When there is an alternating current, an alternating current is generated in the iron core (or core).

Causes a voltage (or current) to be induced in the secondary coil.

The transformer is composed of an iron core (or magnetic core) and a coil, the coil has two or more windings, of which the winding connected to the power supply is called the primary coil, and the rest of the windings are called secondary coils.

The power consumption of the transformer itself alone has 1

No-load loss. iron loss); 2.

Load loss. Copper loss), which has a lot to do with the manufacturer's manufacturing process and the materials used. At present, the commonly used 10kV energy-saving dry transformer SCB10 type or oil immersion type.

As far as the S11 type is concerned, its self-consumption is higher than that of its previous product, the SCB9 type.

The S9 type is much smaller. Because as long as the transformer is energized, there will be no-load loss, the transformer in the same model, the loss of large capacity is large, and the loss of small capacity is small (such as:

Hua Peng. The plant SCB10-800KVA changes its idle consumption to about 1520W, and the Wujiang plant S11-MR-800KVA changes to about 1053W); Load loss is the loss of the transformer at rated power, and its loss will change with the change of load, that is, it is proportional to the size of the load. (A primary investment and product selection are important.)

In addition to iron loss, other power consumption varies with the time of electricity consumption and the size of the load, which is a variable.

Iron loss calculations can be provided by the manufacturer.

No-load loss of transformer.

The amount is multiplied by 24 hours (days) and multiplied.

365 days. years).

The total electricity consumption of the transformer: no-load loss plus load loss plus actual electricity consumption.

The annual power consumption of the power transformer is composed of two parts: no-load power consumption and load actual power consumption.

The no-load power consumption is composed of: copper loss and iron loss of the power transformer, and the instructions of the copper loss and iron loss consumption transformer are marked.

The annual power consumption of the power transformer = (the consumption of copper and iron losses + the daily power consumption of the load) * the annual operation time (hours).

The above data is an average of the annual electricity consumption.

To achieve accurate data, it is recommended to install a watt-hour meter on the high voltage side to make the data accurate.

If you are a customer of Guangdong Power Grid Company, 1. If the basic electricity fee is charged according to the maximum demand of the contract, the actual maximum demand exceeds the approved value of the contract by 105, and the basic electricity charge of the part exceeding 105 is doubled. If it does not exceed the approved value of the contract 105, it will be charged according to the approved value of the contract, that is, 3232 yuan kilowatts multiplied by the approved value of the contract; When the approved value of the maximum demand is less than 40% of the total capacity of the transformer and the capacity of the high-voltage motor, the maximum demand of the contract shall be approved at 40% of the total capacity;

2. If the basic electricity fee is calculated according to the actual maximum demand, the actual maximum demand shall be approved by the power supply department every month, and the basic electricity fee shall be equal to the actual maximum demand of the month multiplied by 32 yuan kilowatts;

3. For users with two or more incoming lines who are billed according to the maximum demand, the maximum demand of each incoming line is calculated separately, and the basic electricity fee is cumulatively charged.

We hope you find ours helpful.

If you are a customer of Guangdong Power Grid and consult the details of the basic electricity charge. According to the relevant electricity price policies, industrial users with a transformer capacity of 315 kVA and above are required to charge basic electricity charges; At present, there are three basic electricity charge calculation methods: according to the transformer capacity, according to the maximum demand of the contract, and according to the actual maximum demand, and the following are the details of the three basic electricity charge calculation and collection methods:

Basic electricity charge calculated according to transformer capacity = 23 yuan kVA transformer capacity;

Basic electricity charge calculated according to the maximum demand of the contract = 32 yuan kW The maximum demand of the contract;

Basic electricity charge calculated according to the actual maximum demand = 32 yuan kW actual maximum demand;

You can choose the basic electricity charge calculation method according to your actual electricity demand.

We hope you find ours helpful. If you have any other questions, please call the 24-hour power supply service**95598.