Load Scheduling Module for Grid Stability with Renewable Integration
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Solution Overview
Problem
Electrical grid systems face challenges in load curtailment management due to the integration of large numbers of renewable energy sources, leading to increased grid security and reliability concerns such as overvoltage and overcurrent issues, which existing load scheduling techniques fail to adequately address.
Innovation Solution
A method and system for determining the scheduling of electrical power system loads and generation resources using a load scheduling module that considers power system constraints, including power flow, voltage constraints, and energy storage capacity, to curtail or adjust power levels of loads and resources, minimizing rolling blackouts and optimizing power flow within the grid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If large numbers of renewable energy sources are added to the power system, then energy supply capacity is improved, but grid security and reliability deteriorate due to overvoltage or overcurrent issues
Solution Approach 1:
The load scheduling module performs preliminary scheduling of loads and generation resources before peak demand periods or potential overload conditions occur. By pre-coordinating when loads should be active or curtailed, and when generation resources should be dispatched, the system prevents overvoltage and overcurrent conditions before they arise, maintaining grid security while accommodating renewable energy sources.
Solution Approach 2:
The system dynamically adjusts the operational status of loads and generation resources based on real-time grid conditions, renewable energy availability, and demand patterns. This dynamic scheduling allows the system to respond flexibly to changing conditions, preventing reliability issues while maximizing renewable energy utilization.
2Reliability
If load curtailment is implemented to ensure sufficient power during resource constraints, then power supply reliability is improved, but customer service quality deteriorates due to rolling blackouts
Solution Approach 1:
Instead of implementing full system-wide curtailments that cause rolling blackouts, the load scheduling module applies partial curtailment only to specific non-critical loads in specific areas where excess supply exists. This selective approach maintains power supply reliability by preventing overall system overload while minimizing impact on customer service quality by leaving critical loads unaffected.
Solution Approach 2:
The system applies different curtailment strategies to different loads and different geographic areas based on local conditions, load criticality, and renewable energy availability. By localizing curtailment actions rather than applying them uniformly, the system maintains reliability where needed while preserving customer service quality in areas where renewable energy can meet demand.
3Device complexity
If traditional load scheduling techniques are used, then operational simplicity is maintained, but they fail to adequately address grid security concerns with renewable integration
Solution Approach 1:
The load scheduling module serves as an intermediary layer between renewable energy sources and the traditional power system infrastructure. It coordinates the intermittent output of renewables with load demands and grid constraints, translating variable renewable supply into reliable power delivery without requiring fundamental changes to existing grid infrastructure or scheduling practices.
Solution Approach 2:
The scheduling module performs multiple functions simultaneously: it manages renewable energy integration, performs load curtailment, optimizes power flow, and maintains grid security constraints. By consolidating these functions into a single multi-functional system, the patent achieves improved grid security without proportionally increasing overall system complexity.
Data Source
AI summary
Systems and method are described herein for determining scheduling of electrical power system loads and generation resources. A load scheduling module determines load scheduling characteristics of the electrical power system loads and the generation resources based on power system constraints including power system flow, voltage constraints associated with each electrical system loads or each generation resource, or energy storage capacity of an energy storage device coupled to at least one of the electrical power system loads or the generation resources. The load scheduling module initiates a first signal that curtails power of a subset of the electrical power system loads based on the load scheduling characteristics. The load scheduling module initiates a second signal that adjusts power of at least a portion of remaining loads of the electrical power system loads to accommodate for the subset of the plurality of the electrical power system loads having curtailed power.