Local Energy Management Control for Multi-Asset Grid Service Dispatch
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Solution Overview
Problem
There is a need for localized systems and methods to manage, control, and leverage a plurality or mixture of power generating systems at one or more local sites to expand power and revenue capabilities while offering grid services at the local site level.
Innovation Solution
A local energy management system (LEMS) communicatively coupled to an external entity, which receives a mixture of local power generating assets and a power grid, processes incoming raw data, generates set points to meet energy objectives, and conveys these set points to the local power generating assets to perform grid services and transfer power between the assets and the power grid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed energy storage systems are deployed as single power sources for specific services, then the system can provide dedicated service capability, but the system cannot expand power and revenue capabilities through multiple services
Solution Approach 1:
The patent applies multi-functionality by enabling fixed energy storage systems to perform multiple grid services simultaneously. The system allows a single FES to provide frequency regulation, energy arbitrage, capacity reservation, and other grid services through a unified control platform, transforming single-purpose storage into multi-functional assets that expand both service capability and revenue potential
Solution Approach 2:
The patent segments the control of energy storage systems into independent service modules. Each grid service is controlled as a separate functional unit that can be activated or deactivated independently, allowing the FES to switch between different services or provide multiple services concurrently, thereby increasing adaptability without compromising productivity
2Reliability
If local sites use external power generating systems to supply power to EV charging stations, then the charging stations can operate reliably, but the local sites cannot expand power generation and revenue capabilities
Solution Approach 1:
The patent merges external grid power with locally deployed fixed energy storage systems at EV charging stations. This combination allows the charging station to maintain reliability through multiple power sources while enabling the local site to generate additional revenue by selling stored energy back to the grid or providing localized power to multiple chargers, thereby expanding both reliability and productivity
3Measurement precision
If a single fixed energy storage system is dedicated to one specific service, then the system can optimize performance for that service, but the system cannot leverage its full power capacity for multiple services
Solution Approach 1:
The patent implements dynamic service allocation where the FES can switch between different grid services based on real-time grid conditions, pricing signals, and service demands. The system dynamically adjusts its operational mode to provide frequency regulation during grid instability, energy arbitrage during price differentials, or capacity reservation during peak demand, thereby achieving both performance optimization and multi-service adaptability
Data Source
AI summary
Certain aspects of the present disclosure relate to a local energy management system (LEMS) at local mixed power generating sites for providing grid services and grid service applications. The LEMS generally serves as a local power control agent for facilitating energy management at the local site level by controlling and leveraging a plurality of local assets deployed at the local site, and combining a plurality of generated power from each site which acts as its own virtual power plant for delivering grid services to the grid. In addition, the LEMS has the ability to effectively handle and fulfill energy and electrical objectives of the grid services, including regulation or demand response objectives from the grid, by conveying operational set points that control the power charge and discharge at each local asset in order to meet those objectives.