Energy Accumulator Control for Multi-Interval Energy Flow Scheduling
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Solution Overview
Problem
Existing energy systems face difficulties in incorporating energy accumulators into coordination platforms, as they require simultaneous sales and purchase offers for all time intervals, making efficient energy flow management challenging.
Innovation Solution
A control device is implemented within the energy system to optimize energy flows, ensuring the charge level of the energy accumulator remains essentially the same at the beginning and end of a time domain, using an optimization method that considers various components' data, including generators, consumers, and accumulators, through a communication interface for bidirectional data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an energy accumulator is incorporated into a coordination platform, then the flexibility and optimization capability of the energy system is improved, but the complexity of coordinating energy flows across multiple time intervals increases
Solution Approach 1:
The coordination problem is segmented by separating the energy accumulator's charge/discharge decisions from the simultaneous coordination of all other components. The control device independently determines accumulator operations based on price signals and system needs, while other components are coordinated through standard market mechanisms. This segmentation reduces overall coordination complexity while maintaining system flexibility.
Solution Approach 2:
The system performs preliminary actions by calculating optimal energy flows and accumulator operations in advance for a future time domain (e.g., day-ahead). The control device computes the entire schedule considering accumulator constraints before execution, allowing the accumulator to be pre-charged or pre-discharged according to predicted price differentials and system needs, thereby simplifying real-time coordination.
2Productivity
If sales offers and purchase offers are made simultaneously for all time intervals, then the trading platform can operate efficiently, but it becomes difficult to incorporate an energy accumulator that couples various times
Solution Approach 1:
The control device acts as an intermediary between the energy accumulator and the trading platform. It translates the accumulator's multi-time coupling capability into time-specific sales and purchase offers that fit the standard trading platform framework. The control device receives price signals from the platform, determines optimal accumulator operations across time intervals, and executes transactions that respect both the accumulator's physical constraints and the platform's trading structure.
Data Source
AI summary
Various embodiments of the teachings herein include a device for controlling energy flows between components of an energy system with an energy accumulator comprising a controller for adjusting the energy flows. The controller computes the energy flows beforehand for a time domain using an optimization method, the time domain having a beginning and an end. A charge level of the energy accumulator at the end of the time domain is essentially equal to a charge level of the energy accumulator at the beginning of the time domain.