Distributed Energy Dispatch System for Grid Reliability
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Solution Overview
Problem
Existing aggregation dispatch technologies face challenges in achieving real-time control and reliability, particularly for small power users, due to network limitations and discrepancies between predicted and actual power loads, leading to poor dispatch effectiveness and increased costs.
Innovation Solution
An energy dispatch system comprising a server and site controllers that determine scheduled power consumption targets for users based on total support power, power consumption references, and energy storage device charges, allowing for real-time energy adjustments to meet targets, even in the event of network failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If centralized computing architecture is adopted with cloud server controlling client devices, then the system can collect information and calculate total load of all clients, but real-time control becomes difficult and system reliability deteriorates when network fails
Solution Approach 1:
The system divides the centralized control function into distributed site controllers at each user location. Each site controller independently manages local energy storage devices and power consumption, eliminating the single point of failure in centralized architecture. This segmentation allows the system to maintain local control capabilities even when network communication with the cloud server is interrupted.
Solution Approach 2:
The patent implements local decision-making capability at each site controller, enabling autonomous control of energy storage devices based on local power consumption references and state of charge information. This local quality ensures that control functions continue to operate effectively at the user level without requiring continuous cloud server intervention, thereby maintaining system reliability during network failures.
2Reliability
If distributed computing architecture is adopted with site controllers dispatching power independently, then real-time control and system reliability improve, but users cannot support each other when actual load differs from predicted load
Solution Approach 1:
The patent combines distributed local control with centralized coordination by enabling site controllers to share state of charge information and power consumption reference data through the cloud server. This merging allows users to support each other collectively - when one user's actual load differs from prediction, other users with available capacity can compensate, maintaining overall dispatch effectiveness while preserving real-time local control capabilities.
3Ease of operation
If small users participate in grid services alone, then they can operate independently, but they cannot meet minimum support power thresholds and achieve service targets
Solution Approach 1:
The patent enables small users to aggregate their energy storage devices and control capabilities through the distributed site controller architecture. By combining multiple small users' resources and coordinating their operations through shared information exchange, the system allows them to collectively meet minimum support power thresholds and achieve grid service targets while maintaining individual operational independence and flexibility.
Data Source
AI summary
An energy dispatch system, apparatus, and method are disclosed. The energy dispatch system includes a server and multiple site controllers respectively corresponding to multiple users. Each user corresponds to an energy storage device, and each energy storage device has a stage of charge. The server determines a scheduled power consumption target of each scheduling period for each user according to a total support power, multiple power consumption references of the users, and the stages of charge. The server transmits each scheduled power consumption target corresponding to a first scheduling period of the scheduling periods to the corresponding site controller. Each site controller controls the corresponding energy storage device to charge or discharge according to the corresponding actual load and the corresponding state of charge in the first scheduling period so that the power consumption of the corresponding user during the first scheduling period meets the corresponding scheduled power consumption target.