Virtual Synchronization Control for Grid-Scale Energy Storage Fault Response
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Solution Overview
Problem
Current power grid systems struggle with coordinating energy storage resources and responding to faults, leading to instability and inefficiency, especially with the increasing volatility and uncertainty of new energy sources, necessitating improved safety and stability through coordinated joint control.
Innovation Solution
An energy storage synchronous coordinated management system based on virtual synchronization technology, utilizing a virtual rotor model and an adaptation layer to monitor faults, perform dynamic control, and optimize resource allocation, incorporating real-time data collection and neural network-based control instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy storage resources are integrated into the power grid to improve stability and safety, then the system's reliability is improved, but the complexity of coordinating control and managing these resources increases
Solution Approach 1:
The patent introduces a virtual synchronization system as an intermediary layer between the physical energy storage devices and the power grid control system. This virtual layer includes virtual rotors that simulate synchronous generator behavior, enabling seamless integration and coordinated control without requiring complex direct control of each energy storage device. The virtual synchronization system acts as a mediator that translates grid requirements into device-specific control commands.
Solution Approach 2:
The patent creates virtual copies (virtual rotors) of traditional synchronous generator characteristics to represent energy storage devices. These virtual rotors replicate the inertial and damping properties of physical synchronous generators, allowing energy storage systems to participate in grid frequency regulation and stability control without requiring actual mechanical rotating mass. This copying approach simplifies the control architecture by using software-based models instead of complex hardware control systems.
2Reliability
If real-time monitoring and fault detection capabilities are enhanced to improve grid safety, then the reliability is improved, but the amount of data processing and system complexity increases
Solution Approach 1:
The patent implements comprehensive feedback mechanisms where the virtual synchronization system continuously monitors actual system behavior and compares it with expected performance based on the virtual rotor models. When deviations indicate potential faults or abnormal conditions, the system provides feedback signals to adjust control parameters or trigger alarm conditions. This feedback-based approach enables intelligent fault detection without requiring overly complex monitoring hardware.
Data Source
AI summary
The present invention provides an energy storage synchronous coordinated management method and system based on virtual synchronization technology. The method comprises: selecting an appropriate energy storage device according to the requirements of a power grid and collecting related parameters; building a dynamic model of a virtual rotor, and setting rotational inertia of the rotor and torque parameters; building an adaptation layer; configuring a line monitoring apparatus, carrying out a safety operation when the fault occurs in the adaptation layer, or carrying out dynamic control and predictive planning in the absence of faults. The present invention utilizes intelligence to reduce reliance on experience, and enables dynamic optimization to improve the automation level of energy storage control.