Question

What is Single line
Explain briefly.​

Answer 1

Answer:

Definition: Single line diagram is the representation of a power system using the simple symbol for each component. ... Generator and transformer connections, star, delta and neutral earthing are indicated by symbols drawn by the side of the representation of these elements

Answer 2

Definition: Single line diagram is the representation of a power system using the simple symbol for each component. The single line diagram of a power system is the network which shows the main connections and arrangement of the system components along with their data (such as output rating, voltage, resistance and reactance, etc.).

It is not necessary to show all the components of the system on a single line diagram, e.g., circuit breaker need not be shown in the load flow study but are the must for a protection study. In the single line diagram, the system component is usually drawn in the form of their symbols. Generator and transformer connections, star, delta and neutral earthing are indicated by symbols drawn by the side of the representation of these elements.

Circuit breakers are represented by rectangular blocks. The figure shown below represents the single line diagram of a typical block system. It is difficult to draw the line diagram of the few components. So for simplification, the impedance diagram is used for representing the power system components.

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