Energy management system for hybrid solar and wind based micro smart grid

An efficient energy management system for a small-scale hybrid wind-solar-battery based microgrid. The wind and solar energy conversion systems and battery storage systems have been developed along with power electronic converters, control algorithms, and controllers to test the operation of the hyb

Project Title

Energy management system for hybrid solar and wind based micro smart grid

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

An efficient energy management system for a small-scale hybrid wind-solar-battery based microgrid. The wind and solar energy conversion systems and battery storage systems have been developed along with power electronic converters, control algorithms, and controllers to test the operation of the hybrid microgrid. The power balance is maintained by an energy management system for the variations of renewable energy power generation and also for the load demand variations. This microgrid provides a testing platform for different control algorithms, energy management systems, and test conditions. Real-time control is performed by rapid control prototyping to test and validate the control algorithms of the microgrid system experimentally. The proposed small-scale renewable energy-based microgrid can be used as a test bench for research and testing of algorithms in smart grid applications.

Project Objectives

• To develop Energy Management System(EMS) for small-scale hybrid wind and solar battery-based micro smart grid. 
• To operate the microgrid in a way to Meet Energy Demand.
• Distribution of Power according to our Demand and types of Loads.
• Ensure system stability at peaks hours.
   

Project Implementation Method

It can be divided into three parts; i)  solar and wind-based renewable energy sources supported by a battery storage system along with their converters connected to the DC bus, ii) the load side inverter and single-phase load, iii) a real-time controller implementing the energy management system. The wind energy conversion system consists of a permanent magnet synchronous generator (PMSG)  based wind turbine. The solar photovoltaic (PV) panel is operated with maximum power point tracking (MPPT) when the power generated by both PV and wind is less than the load demand.  When the power generated is more than the demand, the excess power is supplied to the battery and when it is no longer safe for the battery to be charged, the MPPT is turned off. The battery storage system is used to maintain the energy balance in the system.  An energy management system is used to control the power flow under different conditions to supply the load through a single-phase inverter.

Benefits of the Project

• Demand peaks are reduced.
• Transmission line losses are minimized.
• Remote controlling enables better management of billing. 
• Automated and remote meter reading. 
• Electric systems are monitored more quickly. 
• Enabling more efficient use of power resources.
• Power outages are reduced. 
• Enabling dynamic pricing.

Technical Details of Final Deliverable

First of all, we will use solar during day time for small and medium load type while wind turbine during night time. For heavy load, we will use a conventional source as its prototype of bench test and cannot handle a heavy load. Meanwhile, if there are no sources available at a time, the battery will be used to sustain the system which would be charged by either renewable sources i.e. solar or wind turbine. As the energy won't be utilized the whole day so the extra energy generated will charge the battery and hence would act as a backup in hour of need. A small-scale experimental hybrid solar-wind-battery renewable energy-based microgrid with an energy management system is developed and implemented. Experiments were conducted to test the effectiveness of the proposed energy management system for different variations in renewable energy sources and different variations in load demand. The energy management system and control algorithms were implemented using rapid control prototyping in the DSPACE controller. The experimental results show that the system is flexible and accommodates the different variations in the renewable energy sources and the load. The controller allows the effective implementation of the energy management system. This test bench provides a platform in which future tests can be performed for different case scenarios and control algorithms for research in the field of hybrid renewable energy microgrid systems.

Final Deliverable of the Project

HW/SW integrated system

Core Industry

Energy

Other Industries

Core Technology

Clean Tech

Other Technologies

Sustainable Development Goals

Affordable and Clean Energy, Decent Work and Economic Growth, Industry, Innovation and Infrastructure, Responsible Consumption and Production

Required Resources

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