Hybrid Power Dispatch Using BESS to Cover Combustion Startup Delay
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Solution Overview
Problem
Hybrid electrical power generation systems face challenges in ensuring continuous electrical demand supply when intermittent renewable energy sources fail to meet demand, and traditional power generation technologies are unavailable or offline, due to startup delays and energy storage limitations.
Innovation Solution
A method and system that utilize a battery energy storage system (BESS) in conjunction with renewable energy power plants and combustion power plants, where a controller dynamically dispatches energy between these components based on state of charge and operational status to ensure stable power supply, including scheduling and charging operations to manage energy storage and generation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional combustion power plants are used to cover shortfall when renewable energy is insufficient, then electrical demand can be supplied, but startup delay prevents timely response when renewable energy fails
Solution Approach 1:
The battery energy storage system is pre-charged during periods when renewable energy generation exceeds demand, so that stored energy is available immediately when renewable generation becomes insufficient, eliminating the need to wait for combustion plant startup
Solution Approach 2:
The battery energy storage system acts as an intermediary between renewable energy sources and the electrical load, providing immediate power supplementation during transitions and eliminating the time delay associated with combustion plant startup
2Reliability
If battery energy storage system capacity is increased to bridge gaps during renewable fluctuations, then electrical demand supply reliability improves, but system complexity and cost increase
Solution Approach 1:
The system dynamically adjusts the charging and discharging of the battery based on real-time conditions including renewable generation levels, electrical demand, and state of charge, optimizing performance without requiring excessive battery capacity
Solution Approach 2:
The controller continuously monitors system state including renewable generation output, electrical demand, and battery state of charge, using this feedback to make real-time dispatch decisions that maintain reliability while managing system complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures reliable electrical demand supply by optimizing energy dispatch between renewable and combustion sources, leveraging BESS to bridge gaps during renewable energy fluctuations and startup delays, thereby enhancing the overall efficiency and reliability of hybrid power generation.
Implementation Method 1
a battery energy storage system (BESS)... determining a state of charge of the BESS... dispatching the RE power plant to charge the BESS
Data Source
AI summary
A method of operating a hybrid electrical power generation system (100) to supply an electrical demand, the hybrid electrical power generation system (100) having a battery energy storage system (BESS) (170), a renewable energy RE power plant (120), and a combustion power plant (160) having a supply delay, the supply delay being a time associated with signalling the combustion power plant (160) to start-up to the combustion power plant (160) being capable of supplying the electrical demand, the method comprising: determining a state of charge of the BESS (170); in response to determining that the RE power plant (120) is generating electrical power and the state of charge of the BESS (170) is at least at a secure level (176) capable of supplying the electrical demand during the supply delay: dispatching the RE power plant (120) to supply at least some of the electrical demand: and in response to determining that the RE power plant (120) is generating electrical power and the state of charge of the BESS (170) is at an insecure level that is incapable of supplying the electrical demand during the supply delay: dispatching the RE power plant (120) to charge the BESS (170).