Overview What's is micro grid Over view of electric grid Why Micro grid IDSM(Integrated Demand Side Management ) Transmission and Distribution Lines Managed Grids Compared Micro grids vs. ZNE Technical and Operational Considerations Summary www.engineersportal.in

What is Micro grid Means a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid and that connects and disconnects from such grid to enable it to operate in both grid- connected or Island Mode. www.engineersportal.in

Definition www.engineersportal.in

The Electric Grid Step up Above 50,000 V to 1,000,000 V (50 kV to 1,000 kV) Transmission Sub-station 10,000 V (10 kV) Step down Distribution 120V – 240V 12,000 V (12 kV) Generation Step down 480V Home Business www.engineersportal.in

Simple Micro grid Diagram www.engineersportal.in

Why Micro grids? Generate electricity close to end-use Generate electricity ‘behind the meter’ Natural gas hydrogen fuel cells Produce base load power Energy storage for load shape/shift IDSM and Demand Response (DR) www.engineersportal.in

Integrated Demand Side Management (IDSM) The Strategic Plan recognizes the integration of demand-side management (DSM) options including energy efficiency (EE), demand response (DR), and distributed generation (DG) as fundamental to achieving California’s strategic energy goals. www.engineersportal.in

Anatomy of a Micro grid Generation Reliable and cost effective renewables Fuels cells with waste heat recovery and optimization Bi-directional inverter Short and effective transmission. Energy Storage by small loads. Project finance and execution. Simple Operation and maintenance. www.engineersportal.in

Technical Considerations Proper control of voltage/frequency /power quality Protection schemes and modifications Changes in power-flow magnitude and direction Steady state and transient conditions Reserve margins, load shedding, demand response, and cold load pickup www.engineersportal.in

Operational Considerations Safety Protection coordination Load to generation matching Load (phase) imbalance Micro grid communications, monitoring and dispatch (mini EDC) Ongoing maintenance www.engineersportal.in

Economic Considerations Geographic dispersion of critical loads Initial cost to install required facilities Life of installed system may vary and is important Monitoring and control of installed system Maintenance and troubleshooting of installed system Generation must be capable of continuous operation Non-Micro grid and Micro grid customer impacts www.engineersportal.in

Transmission and Distribution Lines Typical transmission land distribution structures for electric power systems. 500KV and 230KV are part of the transmission system, 138KV, 69KV, and 7-13KV are part of the distribution system. www.engineersportal.in

Micro grids vs. ZNE MG => self-contained energy Never run out, excess is stored ZNE is over production, balancing Fuel cells can cover base load PV can cover peak demand energy NOTE :-ZNE() is a model for distributed generation and emissions reduction www.engineersportal.in

Energy Management Energy Management Is a System In Which Generation, Transmission, Distribution are include and also their Voltage. In Generation normally voltage is 11KV,33KV. In Transmission normally voltage is 132kv,220kv,66kv,33kv. In Distribution voltage is 11kv,400volt,230volt. www.engineersportal.in

Summary Micro grids provide a measure of energy control and autonomy from the grid Running a micro grid is a large financial investment, and requires technical skills Distributed Generation, energy storage, and active load management => IDSM An emerging electricity model blends the best of micro grids, DG, and active IDSM www.engineersportal.in

Thanks for your attention! sir www.engineersportal.in

Your queries please !!! www.engineersportal.in