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For the operation of the equipment may need supplies of water, gas, steam, but no unit without connection to the power grid will not work. Numerous types of electrical equipment operating in industrial enterprises serve to automate production operations and technological processes. Electrical energy supplied to electrical devices and machines is converted into kinetic, thermal and other forms of energy.
Taking into account the special requirements for power and parameters of the energy supplied to the electrical equipment, the design of power supply systems requires an analysis of the situation and an accurate calculation.
As with the reconstruction of electrical installations, when developing a power supply project, it is necessary to consider its impact on:
- The possibility of developing the entire power system, and the electric one in particular, subject to the construction and commissioning of a new facility;
- The need to put new power grids into operation and their optimal combination with existing ones regardless of differences in voltage classes;
- supply of electricity to consumers of all business forms and accessories falling into the service area of electric networks;
- Reduced electrical loss.
A reasonable combination of both external and internal energy supply with technological redundancy, taking into account its economic and technological necessity.
Calculation of electrical loads should be performed at the initial, design stage of construction of an industrial enterprise or workshop. Immediately you need to determine the possible loads at the facility, which will allow you to choose the right parameters of the power supply system. The calculation is based on the assumption of simultaneous loading of all the receivers, which almost never happens in reality. Usually, the loading of SES is not complete. Some consumers connect, others, on the contrary, disconnect. The calculation should be carried out at maximum load, which will ensure the continuous supply of energy and the operation of all electrical receivers. Negative effects can have both a decrease in the calculation of loads and an increase.
If the planned loads are overstated, the cost of construction can be unreasonably high. Internal electrical networks will be designed with a large margin, which will cause an increase in the cost of too powerful transformers and substations, wires and other types of electrical equipment.
Significantly large problems will cause underestimation of loads expected at the facility. Electrical networks will not be able to pass the energy consumers need. The power of transformers, cables, wires will not be enough for all consumers. All equipment will work at the limit, overheat, which will lead to frequent breakdowns and soon failure.
Only rationally selected electrical equipment will ensure stable operation of the power grid at optimal costs.