网络的安全域方法及与抗毁性的对比验证

为网络遭受外部攻击或内部失效后的安全性分析和预防措施研究提供了新方法,该方法描述网络在N-1安全约束下的安全运行区域,并通过工作点到域边界的距离反映出安全或不安全的程度,为下一步控制措施指示了方向和强度。本文将安全域的方法应用在不同规模的一般网络、通信网和电网中,验证了方法的普适性和有效性;并与抗毁性对比,结果表明本文方法与抗毁性具有较高一致性,且计算速度更快,适合于在线安全监视与控制,以提前消除隐患。

Secure Region of Network and Comparison with Invulnerability

This paper presents a new method for security analysis and precautionary measures when attack or error occurs in networks.This method describes the operating region under N-1 constraint and presents the degree of security or insecurity by secure distance to indicate direction and intensity for next step.We put the method into effect in general networks, small communication network and large-scale power network to verify its correctness, and compare it with network invulnerability.It can be seen that secure distance index and invulnerability index are very consistent in judging the reliability of a system, meanwhile, the former can bring secure region information to eliminate hidden dangers in advance and be appropriate for online security surveillance and control based on faster calculation speed.