Smart Grid Cyber-Physical Security Modeling via Multi-Agent Simulation

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Solution Overview

Problem

The existing electrical grid infrastructure faces challenges in understanding and addressing vulnerabilities due to the integration of cyber and physical components in smart grids, leading to potential safety and privacy concerns, which traditional security solutions fail to adequately address.

Innovation Solution

A computer-implemented method using interactive software multi-agents to model and simulate cyber and physical attacks on smart grid components, assessing the impact of these attacks and providing a framework for mitigation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional security solutions are applied to the smart grid, then implementation simplicity is maintained, but security effectiveness against cyber-physical threats is insufficient

Engineering Contradiction:
Improvesecurity effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The security assessment system is segmented into multiple independent software agents, each responsible for specific monitoring and control functions of different grid components. This allows comprehensive security coverage while maintaining modular architecture that manages complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Software agents act as intermediaries between cyber components and physical infrastructure, enabling traditional security solutions to effectively address cyber-physical threats by bridging the gap between digital security tools and physical grid operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If comprehensive threat assessment is implemented, then security coverage is improved, but computational resources and time requirements increase

Engineering Contradiction:
Improvesecurity coverageVSAvoidassessment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary threat modeling and vulnerability assessment by simulating attacks before actual threats materialize. This proactive approach enables comprehensive security evaluation to be completed in advance, reducing real-time assessment requirements.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates virtual copies of grid components and threat scenarios through simulation, allowing comprehensive threat assessment to be performed on replicas rather than the actual system, significantly reducing time and resource requirements while maintaining assessment accuracy.

Inventive Principle:
Principle #26Copying

3Difficulty of detecting and measuring

If multi-agent simulation system is deployed, then threat detection capability is enhanced, but system complexity and implementation difficulty increase

Engineering Contradiction:
Improvethreat detection capabilityVSAvoidimplementation complexity
Core Design Contradiction:
Difficulty of detecting and measuringVSDevice complexity

Solution Approach 1:

The software agent framework is designed with universal capabilities that can monitor and control multiple types of grid components (smart meters, transformers, transmission lines) through standardized interfaces. This multi-functionality enhances threat detection across the entire grid while avoiding the need to develop separate specialized systems for each component type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS9203859B2Methods and systems for cyber-physical security modeling, simulation and architecture for the smart grid
Publication Date: 2015.12.01 THE BOEING CO
  • US9203859B2 patent drawing
  • US9203859B2 patent drawing
  • US9203859B2 patent drawing

AI summary

A computer-implemented method for use in evaluating at least one threat to a complex system includes identifying one or more physical components of the complex system and modeling the one or more physical components with interactive software multi-agents. The multi-agents are programmed to monitor and control at least one function of the modeled physical components. One or more threats to a target of the complex system are identified. Each threat is defined as a cyber threat or physical threat and the target is defined as a cyber component or physical component. The method includes simulating an attack on the complex system by the identified threat and assessing an impact of the attack on the complex system.