Test #1. Overview of microgrid concept

Microgrid is

• A network that connects power plants, substations and transformers by means of transmission and distribution lines that carries electricity sometimes over hundreds of miles to local communities, homes, schools and offices.

• A distribution system, containing distributed generators, storage devices, or controllable loads, and operating either connected to the main power network or islanded

• A group of interconnected generators

• A group of interconnected loads

The main segments of the Microgrid are

• Phase A, Phase B, Phase C

• Measurement, logic, control

• Generation, Transmission & Consumption

• Generation, Transmission, Distribution & Consumption

To ensure a reliable and economical operation, Microgrid have to include

• own generating units (renewables, diesel, microturbine, fuel cell)

• storage system (batteries, pumped-storage hydroelectricity, supercapacitors)

• smart management system (to ensure the continuous balance between electricity generation and demand)

• all of the above

Microgrids are classified based on

• Operation, structure, types of source

• Types of source, scenario and size

• Operation, scenario and size

• All of the above

The main types of sources in Microgrid are

• only renewables

• only diesel generators

• renewables and diesel generators

• renewables, diesel generators, microturbine, fuel cell

Which sentence is not correct

• Microgrid can be considered as a small-scale version of the traditional utility grid

• Microgrid can coordinate unique community energy needs with generation resources

• Microgrid have to operate with utility grid

• Microgrid enables ‘intelligent sharing’ of energy loads and resources

What is the need of energy management in microgrid?

• To manage the renewable sources, storages and loads

• To reduce the stress on grid during peak hours

• To obtain energy balance in an islanded operation

• All of the above

The economic option of microgrid operation objective involves

• Minimization of total costs regardless of network impact/performance

• Optimization of network operation (minimizing power losses, voltage variation and equipment loading)

• Decreasing the emission levels

• All of the above

The technical option of microgrid operation objective involves

• Minimization of total costs regardless of network impact/performance

• Optimization of network operation (minimizing power losses, voltage variation and equipment loading)

• Decreasing the emission levels

• All of the above

Which statement is not true?

• Virtual power plant comparing with the microgrid can stretch over much wider geography

• Virtual power plant comparing with the microgrid can grow or shrink depending upon real-time market conditions

• Virtual power plant comparing with the microgrid can be created using software to control and optimize a network of generation and demand side storage

• Virtual power plant comparing with the microgrid can disconnect from the larger grid to create a power island