Battery Energy Storage Power Scheduling for Multi-Service Allocation
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Solution Overview
Problem
Energy storage systems face challenges in providing functional services effectively due to unreasonable power and capacity allocation, leading to inefficiencies and potential failures when multiple functions are required simultaneously, as existing methods lack the ability to ensure independence between different users or functions and often result in energy being consumed by high-priority functions, disrupting other services.
Innovation Solution
An energy storage system comprising battery packs, a converter, and a controller that communicates with user equipment to determine actual user scheduling powers and control the converter to allocate power accordingly, ensuring reasonable power scheduling by revising requested charging and discharging powers within user-defined ranges and updating remaining chargeable and dischargeable energy at intervals, thereby optimizing energy distribution across multiple user equipment and functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the energy storage system serves multiple functional services simultaneously, then the system can provide comprehensive power supply services, but the power and capacity allocation becomes unreasonable leading to system failure
Solution Approach 1:
The patent segments the energy storage system into multiple independent function modules, each responsible for a specific function (frequency regulation, voltage support, peak load regulation, etc.). Each module independently manages its own power and capacity allocation, preventing conflicts between functions and ensuring reliable operation of individual services while maintaining system versatility.
2Reliability
If high-priority functions consume energy, then critical services are maintained, but other services are disrupted due to insufficient energy allocation
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors the power and energy status of each function module, as well as the overall system state. Based on real-time feedback, the controller dynamically adjusts power and capacity allocation among different functions, ensuring that critical services receive necessary energy while maintaining adequate supply for other services, thus preventing disruption.
3Ease of operation
If the energy storage system allocates power without considering user equipment information, then the system operation is simple, but the power scheduling is unreasonable leading to inefficiency
Solution Approach 1:
The patent implements preliminary action by having user equipment submit power scheduling requests in advance, specifying their power needs and preferences. The controller pre-processes these requests and establishes power allocation plans before actual power delivery. This allows the system to operate efficiently with optimized power scheduling while maintaining ease of operation through a straightforward request-fulfillment interface.
Data Source
AI summary
An example energy storage system and a related method are disclosed. In the energy storage system, a controller obtains information about user equipment, and then controls a converter and a battery group based on the information about the user equipment, to supply electric energy to an electric device or receive electric energy from a power sourcing device. In this way, the energy storage system can provide reasonable power scheduling, thereby improving utilization of the energy storage system.