Battery Energy Storage CPS Reliability Modeling for Topology Failures
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Solution Overview
Problem
The large and complex topology of communication and monitoring systems in very-large-scale (VLS) battery energy storage power stations makes it difficult for control centers to obtain and process data efficiently, potentially leading to shutdowns and reduced operation efficiency.
Innovation Solution
A method and apparatus for analyzing reliability by establishing a reliability model based on a cyber-physical system (CPS) of a VLS battery energy storage power station, incorporating an information system, physical system, and cyber-physical interface, using reliability models to quantify information disturbance and failure rates, and performing sampling simulations to calculate reliability indices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the topology of communication and monitoring systems is expanded to support VLS battery energy storage power station, then the power station can meet diverse application scenarios and requirements, but the system becomes more complex and vulnerable to failures
Solution Approach 1:
The patent segments the communication and monitoring system into modular functional units with standardized interfaces. Each module can be independently configured and managed, allowing the system to adapt to diverse application scenarios while maintaining manageable complexity through modular architecture.
Solution Approach 2:
The patent implements universal communication protocols and standardized monitoring interfaces that can handle multiple application scenarios (emergency control, stabilizing fluctuation, etc.) through a unified system architecture, reducing the need for scenario-specific customizations and simplifying overall system complexity.
2Reliability
If random failures occur in communication and monitoring devices, then system redundancy is reduced, but implementing redundancy increases system complexity and cost
Solution Approach 1:
The patent implements preemptive redundancy mechanisms where backup communication and monitoring devices are pre-configured and standby-ready. When failures occur, these pre-prepared redundant components can immediately take over, cushioning the impact on reliability without requiring complex real-time reconfiguration.
Solution Approach 2:
The patent introduces an intermediary layer (communication gateway/protocol translator) that abstracts the complexity of redundancy management. This intermediary handles failover logic and device coordination, shielding the core control system from complexity while maintaining high availability through redundant pathways.
3Loss of information
If the control center attempts to process all data from the complex topology, then data processing completeness improves, but processing time and computational resources increase significantly
Solution Approach 1:
The patent extracts and filters critical data elements at the edge devices and intermediate nodes before transmitting to the control center. By taking out only essential information and preprocessing data locally, the system maintains data completeness for decision-making while significantly reducing the volume of data requiring central processing.
Solution Approach 2:
The patent implements selective data collection where not all devices transmit all data types continuously. Instead, data transmission is activated partially based on event triggers, threshold violations, or priority levels, ensuring critical information is captured while avoiding excessive data processing overhead in the control center.
Data Source
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AI summary
The application provides a method and apparatus for analyzing reliability of a cyber-physical system (CPS) of a very-large-scale (VLS) battery energy storage power station, which solves a problem that due to large and complex topology of communication and monitoring systems of a VLS battery energy storage power station, operation efficiency thereof is greatly reduced and the danger of power station shutdown may be caused when a communication and monitoring device fails. The method includes the following operations. Information disturbance data is obtained based on a preset reliability model of an information system. A failure rate and a repair rate of a cyber-physical interface apparatus are obtained based on a preset reliability model of the cyber-physical interface apparatus. A reliability model of the CPS of the VLS battery energy storage power station is obtained based on a preset reliability model of a physical system, the information disturbance data and the failure rate and the repair rate of the cyber-physical interface apparatus. A reliability index of the VLS battery energy storage power station is obtained based on the reliability model of the CPS of the VLS battery energy storage power station.