Power dispatching operation instruction security verification method and system

Abstract

The invention discloses a power dispatching operation instruction safety verification method and system, and the method comprises the steps: building a power grid local load flow calculation model according to a local communication network between transformer substations, and calculating the transmission power of a line in a communication circle after a dispatching operation instruction is executed; researching the change relation of the line power flow before and after the scheduling instruction is executed, establishing a power scheduling instruction credibility model, and achieving quantitative evaluation of scheduling instruction safety analysis. The method and system overcome the defect that an existing method cannot cope with network attacks, and the safety level of power dispatching is improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to power system safety analysis, and in particular to a method and system for safety verification of power dispatching operation instructions. Background technique [0002] With the continuous improvement of the intelligence level of the power system, information and communication technology has been widely used in the power system. In recent years, power system network attacks have occurred frequently, and malicious attackers are using the security loopholes in power information systems to carry out data injection attacks. For example, malicious attackers can modify the data of measuring devices, destroy the integrity of power system data, and mislead dispatchers to issue wrong dispatching operation instructions, resulting in safety accidents such as line disconnection and load shedding. [0003] At present, the execution method of power dispatching operation instructions is...

AI Technical Summary

Problems solved by technology

[0004] There are many shortcomings in the existing power dispatching operation command operation method: 1) the current power dispatching operation command method does not consider the inaccuracy of the dispatcher in the judgment of the wrong or incomplete measurement data; 2) in addition, the current dispatching The method does not take into account the possibility of dispatching instructions being tampered with in the process of power communication; 3) The current power dispatching method is simple "from top to bottom", and only the dispatching operator makes dispatching operation instructions on the macro data of the system, and the substation The operator of the operation instruction did not conduct risk verification on the dispatch operation instruction through the on-site data

Therefore, the current power dispatching operation command operation method is not enough to deal with information attacks, has serious security risks, and is easy to cause large-scale power accidents. It is urgent to invent a new power dispatching operation command security verification method and system

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