Safety assessment method, system and power flow calculation method and system for power dispatching order

Abstract

The invention discloses a method, system, and power flow calculation method and system for evaluating the safety of power dispatching instructions. Aiming at the problem that the current substation system lacks the safety evaluation of power dispatching instructions, the invention proposes the safety evaluation of power dispatching instructions that integrates real-time operating condition data. method. According to the local communication network between substations, the local power flow calculation model of the power grid is established; using the phase angle difference between the boundary nodes of the communication circle and the equivalent technology of injected power at the boundary nodes, the accurate calculation of the power grid flow based on local operating condition data is realized. The severity of physical consequences is integrated into the security risk assessment of the deployment command, so as to realize the security assessment of the remote command by the substation, and avoid the hidden risks caused by malicious commands. The invention realizes the fusion of the vulnerability of the information system and the physical security consequences, and overcomes the serious deficiency that the existing evaluation methods lack physical consequences analysis.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a method, system, and power flow calculation method and system for safety evaluation of electric power dispatching instructions. Background technique [0002] The power system is a key national infrastructure, and its safe and stable operation is related to national security and social stability. With the massive application of information technology, today's power system has evolved into a typical cyber-physical system. On-site telemetry and remote signaling data are transmitted to the control center through the communication network, and the control center makes scheduling and control decisions based on the received on-site data, and then transmits control instructions back to the sub-stations to control the primary equipment on site. With the complexity of the international situation, the power system has become the preferred target of cyber attacks. If the co...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for safety evaluation of electric power deployment instructions and a power flow calculation method and system for the deficiencies of existing technologies, so as to solve the problem of difficult safety risk assessment of electric power deployment instructions in substation systems and improve the security of power grids. safety

Images