Renewable energy microgrid replay attack-oriented detection, isolation and positioning method

Abstract

The invention provides a renewable energy microgrid replay attack-oriented detection, isolation and positioning method, and the method comprises the steps: a control center initializes related parameters, and comprises the steps: updating and receiving an encrypted energy value according to the periodic input characteristics of an external energy collector; according to a preset rule, under the limitation of limited available encryption energy, periodically formulating an encryption transmission strategy; judging whether the current data needs to be transmitted in an encrypted manner or not, if the current data needs to be transmitted in an encrypted manner, performing Paillier encrypted transmission on the preprocessed data packet by the PMU at the preset Label, otherwise, directly transmitting the data packet preprocessed by the PMU; and the control center performs label detection on the received data packet and judges whether the currently received data packet is attacked or not according to a detection result. The method for detecting the network replay attack in the one-way transmission process (an open-loop system) is provided under the assistance of Label detection by utilizing an encryption transmission technology, and the method does not sacrifice the control performance of the system and does not bring extra transmission cost.

Description

technical field [0001] The invention relates to the technical field of microgrid system security, in particular to a detection, isolation and location method for replay attacks on renewable energy microgrids. Background technique [0002] At present, most of the electricity consumed by human production and life relies on the combustion of fossil fuels. On the one hand, this power generation method has a low conversion efficiency; on the other hand, a large amount of carbon dioxide emissions have adverse effects on the global climate. Recently, electricity production based on renewable energy has attracted widespread attention as a clean and environmentally friendly way of generating electricity. Due to the characteristics of non-sustainability and instability of renewable energy, in order to fully integrate the traditional power system with diversified renewable energy generation, a renewable energy microgrid system is constructed. As an emerging power grid system, microgr...

AI Technical Summary

Problems solved by technology

[0004] However, most of the current replay attack detection schemes are based on closed-loop systems, and there is a lack of efficient detection schemes for open-loop systems, such as SCADA (supervisory control and data acquisition, data monitoring and acquisition systems)

At the same time, existing solutions are usually proposed on the premise of sacrificing certain control performance or bringing high additional transmission costs

In addition, existing methods cannot guarantee the detection of replay attacks without interrupting the normal operation of the system.

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