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Use Cases Microgrid

Microgrid

A microgrid is a localized group of electricity sources and loads that normally operates connected to and synchronous with the traditional wide area synchronous grid (macrogrid), but can also disconnect to "island mode"  and function autonomously as physical or economic conditions dictate.

In this way, a microgrid can effectively integrate various sources of distributed generation (DG), especially Renewable Energy Sources (RES) - renewable electricity, and can supply emergency power, changing between island and connected modes.

Microgrids are typically supported by generators or renewable wind and solar energy resources and are often used to provide backup power or supplement the main power grid during periods of heavy demand. A microgrid strategy that integrates local wind or solar resources can provide redundancy for essential services and make the main grid less susceptible to localized disaster.

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The microgrid market is expected to grow from USD 19.22 billion in 2017 to USD 39.10 billion by 2023, at a CAGR of 11.97% during the forecast period.

Source: Markets and Markets

The global microgrid market is expected to reach USD 17.51 billion by 2025,growing at a CAGR of 17.0%

Source: Grand View Research

 

What is the business value of this IoT use case and how is it measured?
Your Answer

What are the business value of Microgrids?

- It improves electric reliability: microgrids keep the power flowing by disconnecting – or islanding – from the central grid when it begins to fail. The microgrid’s generators, and possibly batteries, then serve the microgrid’s customers until power is restored on the central grid.

- It enhances resilience/recovery: it immediately restores power to an entire building or operation, leaving occupants barely aware a disturbance occurred. It also is programmed to restore only critical services within a facility.

- A microgrid can lower energy costs for consumers and businesses: it reduces costs through the efficient management of energy supply. Microgrids can earn revenue by providing ancillary services to the central grid. Ancillary services provide support functions for the grid, such as frequency control and spinning reserve.

- It improves the environment and promotes clean energy: microgrids can employ a wide range of green power production technologies. These include solar, wind, fuel cells, combined heat and power (CHP) plants, and energy storage technologies. Natural gas generators, used in many CHP plants, fall on the cleaner side of fossil fuels.

What are its benefits even those outside its footprint?

- A microgrid strengthens the central grid

-  It bolsters cybersecurity 

- It  brings economic value to society

- It improves community well-being

    Who is involved in purchasing decisions, and who are the primary system users?
    Your Answer

    Who is the target audience?

    • Microgrid providers
    • IT service providers
    • Cloud service providers
    • Original equipment manufacturers (OEMs)
    • System integrators and third-party vendors
    • Software solution providers
    • Government bodies
    • Technology investors
    • Enterprise data center professionals
    • Research institutes and organizations
    • Market research and consulting firms
    What business, integration, or regulatory challenges could impact deployment?
    Your Answer

    What are the challenges of Microgrids in electricity system?

    - Voltage and frequency control: active and reactive power generated has to be in balanced condition with the power consumed by the loads including the losses in the lines. 

    In operation of the microgrid, a challenging task is to operate more than one distributed generation on the island; it is no possible to use the active and reactive power control. It is necessary to regulate the voltage during microgrid operation by using a voltage versus reactive power droop controller for local reliability and stability.

    - Islanding: it is a small-scale representation of the future interconnected grid with a high density of distributed generations.  The microgrid provides a benchmark between island and the interconeected grid. It is can be used in the large interconnected grid with the high penetration of distributed generation. The islanding control strategies are very important for the operation of a microgrid in autonomous mode.

    - Protection: once a microgrid is formed, it is important to assure the loads, lines and the distributed generations on the island are protected. The two alternative current limiting algorithms to prevent the flow of large line currents and protection of microgrid during utility-voltage sags. There are as resistance-inductance feedforward and flux- charge-model feedback algorithms, for use with a voltage- source inverter (VSI) connected in series between the microsource and utility grids

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