EMS Power Market Control for Microgrid Transaction Planning
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Solution Overview
Problem
Existing power control methods in energy communities, such as microgrids, face inefficiencies due to reliance on inaccurate power price patterns, leading to suboptimal economic efficiency in electric power transmission and reception from external power systems.
Innovation Solution
A power control device and method that determine the amount of electric power to transmit or receive based on market unit prices and the operating situation of power instruments, including predicted or planned demand values, and adjust operations accordingly, with the ability to compare market prices to set values for improved economic efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power control is performed based on scheduled power price patterns, then operation planning of distributed power supply devices and energy storage devices can be prepared, but transmission and reception of electric power may occur at prices different from actual transactional prices, reducing economic efficiency
Solution Approach 1:
The system performs preliminary determination of transmitted/received electric power amounts based on scheduled power price patterns before actual power transactions. This allows operation planning to be prepared in advance while the final control uses actual transactional prices to execute the planned amounts, ensuring both operational efficiency and economic efficiency are maintained
Solution Approach 2:
The system introduces feedback by using actual transactional prices to adjust and determine the final transmitted/received electric power amounts. The control device continuously monitors actual prices and adjusts power transaction amounts accordingly, creating a closed-loop system that improves economic efficiency while maintaining operational planning benefits
Data Source
AI summary
Economic efficiency in power control including transmission and reception of electric power to and from an external power market is improved. An EMS serving as a power control device that is able to transmit and receive electric power to and from a power market and controls operations of one or more power instruments includes: a host control unit serving as a transmitted/received electric power determining unit configured to determine an amount of transmitted/received electric power which is an amount of electric power transmitted to and received from the power market based on a power-market unit price in the power market and information related to an operating situation of the one or more power instruments; and an intra-grid control unit serving as an operation instruction determining unit configured to determine an operation instruction for the one or more power instruments based on the determined amount of transmitted/received electric power.