Hybrid Power Plant Dispatch Scheduling for Surplus Power Routing
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Solution Overview
Problem
Power plants with renewable energy generation equipment face challenges in predictability and dispatchability due to variable weather conditions, leading to inefficient power usage and shortened energy storage system lifetimes from excessive charging and discharging cycles.
Innovation Solution
A method for power management that determines a power generation schedule based on forecast parameters, optimizes power injection by considering both renewable energy generation and user/grid requirements, and redistributes surplus power to minimize curtailment and extend energy storage system lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy management system strictly controls power supply according to a predefined schedule, then the power supply schedule is met, but surplus power must be curtailed and energy storage system undergoes excessive charging/discharging cycles
Solution Approach 1:
The patent applies dynamics by transitioning from a static, rigid power supply schedule to a dynamic, flexible scheduling approach. The optimized power supply schedule is generated in real-time based on current renewable energy generation forecasts, energy storage system state of charge, and grid demand conditions. This allows the system to adaptively adjust power distribution decisions, enabling surplus power to be utilized rather than curtailed, while still meeting reliability requirements through continuous optimization.
Solution Approach 2:
The patent changes key operational parameters including the power supply schedule, state of charge limits, and power distribution ratios. By dynamically adjusting these parameters based on real-time conditions and optimization algorithms, the system can maximize renewable energy utilization, reduce curtailment losses, and extend energy storage system lifespan while maintaining schedule compliance.
2Stability of the object's composition
If the energy storage system undergoes fast charging and discharging cycles to compensate for variable power generation, then power supply stability is improved, but the lifetime of the energy storage system is shortened
Solution Approach 1:
The patent applies preliminary action by generating optimized power supply schedules in advance based on forecasted renewable energy generation and grid demand. This proactive scheduling allows the system to prepare optimal charging/discharging strategies before variability occurs, reducing the need for reactive, fast charging/discharging cycles that harm energy storage system lifetime while still maintaining power supply stability.
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring the state of charge, power generation forecasts, and grid demand conditions. This feedback is fed into optimization algorithms that adjust the power supply schedule and energy storage operation in real-time, balancing the need for power supply stability with the goal of minimizing charging/discharging cycles to extend system lifetime.
3Reliability
If surplus power is curtailed to meet predefined power supply schedules, then schedule compliance is ensured, but the usage of generated power is not optimal
Solution Approach 1:
The patent transforms the static power supply schedule into a dynamic, optimized schedule that adapts to real-time conditions. By continuously adjusting the schedule based on renewable energy generation forecasts, energy storage state of charge, and grid demand, the system can ensure schedule compliance while maximizing the utilization of generated power, thereby improving productivity without sacrificing reliability.
Data Source
AI summary
The present invention relates to a method of power management of a hybrid power plant (100). Before a predefined time range, the method comprises the steps of: generating a power generation schedule (205) of the renewable power generation equipment (110) during the predefined time range on the basis of forecasts parameters (204), obtaining from a controller of the grid (141), the user (150) and/or the power conversion equipment (160) a power supply schedule (206) defining a power to be supplied to one of the electrical grid (140), the user (150) and/or the power conversion equipment (160) during the predefined time period and of determining a power injection schedule (207) of the power plant (100) defining a power supply of the power plant (100) during the predefined time range on the basis of the power generation schedule (205) and of the power supply schedule (206). During the predefined time range the method comprises the steps of supplying the power of the power plant (100) to electrical grid (140) and/or to the user (150) on the basis of the power supply schedule (206) and of supplying a surplus power of the plant (100) defined as a difference between the power injection schedule (207) and the power supply schedule (206) to one of the electrical grid (140), the user (150), the energy storage system (120) and the power conversion equipment (160).