Development of Cost Effective Energy Management Strategy for Microgrid

Microgrids are essential components to increase the reliability and efficiency of the power system. One of the critical issue in isolated microgrid is the energy demand balance. However, due to high installation cost of storage system, their sizing is essential for optimized operation of microgrid.

Project Title

Development of Cost Effective Energy Management Strategy for Microgrid

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

Microgrids are essential components to increase the reliability and efficiency of the power system. One of the critical issue in isolated microgrid is the energy demand balance. However, due to high installation cost of storage system, their sizing is essential for optimized operation of microgrid.

In this project, a microgrid comprised of solar energy, energy storage and generator (serving as grid) are utilized to balance the load. The optimization algorithm will decide the size of energy storage and provide the energy scheduling mechanism to reduce the operating cost.

Moreover, the system will evaluate the cost of the microgrid by taking the cost of each component and compare the energy cost with the grid considering the lifetime of energy storage. The lifetime of energy storage is an essential factor in the cost analysis and optimum scheduling minimizes the cost of microgrid.

Project Objectives

The main objectives of the research project has been summarized as:

1. To develop the optimal battery sizing model for the economic scheduling of microgrid.
2. To solve the economic dispatch optimization problem in microgrid.
3. To perform the cost analysis for the lifetime of energy storage in microgrid.

Project Implementation Method

1. A microgrid is setup by installing solar panel, energy storage (battery) and diesel generator (acting as grid).
2. The optimization algorithm decides the proper sizing of each equipment in the microgrid based on the load.
3. The economic dispatch is performed for the load of microgrid such that load curtailment can be avoided.
4. The cost analysis of microgrid is evaluated considering battery lifetime and degradation impact so that electricity can be supplied with minimal cost.

Benefits of the Project

• Energy consumption through renewable energy
• Energy saving
• Alternative energy for K-Electric
• Clean and efficient energy
• Reduced power losses

Technical Details of Final Deliverable

The challenging issue of today’s modern power system is the reliable and optimal generation of distributed sources. The complexity of the network increases when energy demand is subjected to non-linear load profile. Hence, energy management strategies are introduced to improve the stability and performance of the microgrid. The economic operation of distributed sources is essential for microgrid cost optimization.

The objective of this research is to optimize the power dispatch from the generation sources by considering the power fluctuations of renewable sources, battery state of charge constraints, battery lifetime and capital cost. Thus, effective energy management strategies will be developed to dispatch the power at the least cost, ensuring the reliability of the microgrid. The proposed method will also evaluate the optimal size of energy storage for the economic operation of microgrid.

Final Deliverable of the Project

HW/SW integrated system

Core Industry

Energy

Other Industries

IT

Core Technology

Others

Other Technologies

Clean Tech

Sustainable Development Goals

Industry, Innovation and Infrastructure

Required Resources

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