Selection of main wiring for 110kV prefabricated substation

Basic requirements for electrical main wiring:

The main principles for the selection of the main wiring of the substation are as follows:

1. Power supply reliability:

How to ensure the reliable (continuous) supply of electric energy with quality and quantity to users is the primary task of power plants and prefabricated substations, which is the first basic requirement.

2. Flexibility:

Its meaning is that the electrical main wiring can adapt to various operation modes (including normal, accident and maintenance operation modes) and can easily realize the operation mode change through operation. When the basic circuit is overhauled, it does not affect the continued operation of other circuits, and the flexibility is also high. The possibility of future expansion should be included;

3. Easy to operate and safe:

The main wiring should also be concise and clear, easy to operate and maintain, less operation steps required for equipment switching, and try to avoid using the isolation switch to operate the power supply;

4. Economy:

That is to say, under the premise of satisfying the three basic requirements of reliability, flexibility, convenient and safe operation, we should strive for investment saving, small footprint, low power loss, low operation and maintenance costs, small number of electrical appliances, and the selection of light electrical appliances is to save investment. important measures.

Select the main wiring according to the above basic requirements.