Question

(C) True or false: 1. DG is always owned by utilities but can be operated by utilities and customers; 2. All the generators connected to the grid must be dispachable for control goals of the system operator 3. Electric vehicles is seen by the grid as an additional load and therefore will always bring stress to the control center 4. Microgrid can be considered as a fraction of the grid with the ability to operate either autonomously or connected to the main grid.

please solve it very quick please

Answer 1

1. False.

Distributed generation (DG) is any electricity generating technology (e.g. solar panel) independently installed by a customer at their home, business, or other privately owned property. It is owned and operated by the customer who installed it.

2. False.

Generators connected to electric grids are a combination of unvarying power plants, dispatchable generators and intermittent energy sources(e.g. solar, wind etc) selected to optimize the cost, availability and reliability. Dispatchable generators can reach full output in a very short timespan of order of seconds, hence they are required for frequency control. However all generators connected to grid need not be dispatchable.

3. True.

From the perspective of the electrical grid, the electric vehicles connected for charging are seen as additional load.

4. True.

A microgrid generally operates connected to the main grid and while connected, can be considered a fraction of the main grid. However, it can disconnect from the main grid and operate autonomously using local energy generation (e.g. distributed generation, batteries etc) in times of crisis like natural disasters (e.g. storms) or power outages, or for other reasons.