Distributed Energy Reserve Allocation Under Capacity-Time Constraints
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Solution Overview
Problem
Existing power systems face inefficiencies due to devices preferentially participating in reserve services over trading, leading to suboptimal utilization and increased procurement of reserve services, as the value of trading and reserve provision converge and real-time, fine-resolution procurement becomes more prevalent.
Innovation Solution
A method and system that optimizes the operation of energy provision devices by separately considering physical and contractual constraints, allowing devices to vary reserve provision across time-steps and structuring devices into portfolios to ensure consistent overall reserve provision, enabling co-optimization of energy trading and reserve provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices preferentially participate in reserve services over trading, then reserve provision certainty is improved, but system efficiency deteriorates
Solution Approach 1:
The patent implements dynamic operation modes that allow devices to switch between reserve provision and trading based on real-time system conditions and value signals. The control system continuously adjusts the device's function assignment, transitioning from static preferential reserve participation to dynamic optimization that responds to changing market conditions, frequency support needs, and device availability.
Solution Approach 2:
The patent changes the operational parameters of devices by introducing a value-based assignment mechanism that considers multiple factors including device availability, system frequency support needs, market trading conditions, and reserve procurement requirements. This allows the system to optimize the allocation of devices between reserve services and trading based on current parameter values rather than fixed preferential rules.
2Reliability
If devices maintain capacity in reserve, then reserve service availability is improved, but device utilization deteriorates
Solution Approach 1:
The patent applies partial action by allowing devices to maintain only the necessary portion of capacity in reserve based on actual system needs and device value assignment, rather than requiring full capacity availability for reserve services. This enables the remainder of device capacity to be utilized for trading or other productive activities, optimizing the balance between reserve availability and device utilization.
3Reliability
If reserve services are procured ahead of time, then operator certainty is improved, but system flexibility deteriorates
Solution Approach 1:
The patent combines preliminary action with dynamic adjustment by allowing advance reserve procurement while implementing real-time value-based reassignment capabilities. Devices can be assigned to reserve services in advance based on current conditions, but the system maintains the flexibility to reassign devices to trading or other functions when market conditions or system needs change, thus preserving both operator certainty and system flexibility.
Data Source
AI summary
The present disclosure relates to a computer-implemented method operating an energy provision device for providing a reserve service to a power grid, comprising: determining at least one device variable, the at least one device variable comprising a power capacity of the device; and setting a power output of the device to a first power output level based on the at least one device variable using a predetermined set of constraints, the predetermined set of constraints comprising: (a) limiting the power output of the device to not exceed the power capacity of the device; and (b) limiting the power output of the device to a level at which the device is capable of maintaining for a predetermined time period.