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State estimation based intelligent power grid dynamic data encryption method

A state estimation and dynamic data technology, applied to key distribution, can solve the problems of inapplicability to large-scale smart grid deployment, large number of smart grid communication nodes, high complexity of asymmetric encryption technology, and meet the requirements of reducing computing power and resources , reduce computing energy consumption, and reduce energy consumption

Active Publication Date: 2013-02-06
JIANGSU BOZHI SOFTWARE TECH CO LTD
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Problems solved by technology

[0004] (2) The number of smart grid communication nodes is huge, the working environment is complex, and there are strict requirements on the stability and complexity of encryption technology, as well as the cost and energy consumption of equipment. Asymmetric encryption technology has high complexity, and the hardware cost and energy consumption are relatively High, not suitable for large-scale smart grid deployment
[0005] In the prior art, there is no effective method that can essentially solve the above problems

Method used

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  • State estimation based intelligent power grid dynamic data encryption method
  • State estimation based intelligent power grid dynamic data encryption method
  • State estimation based intelligent power grid dynamic data encryption method

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Embodiment Construction

[0028] figure 1 It is a block diagram of the smart grid dynamic data encryption method based on state estimation, showing the basic framework of the dynamic encryption and decryption process when the telemetry terminal in the smart grid communication network sends measurement data to the control center.

[0029] figure 2 Flowchart for state estimation-based dynamic data encryption method for smart grid at telemetry terminal. This figure describes in detail the process of the present invention in the remote measurement terminal, using the reserved data observed in real time by the remote measurement terminal sensor to generate a dynamic key and encrypt the reported data. exist figure 2 , assuming that the telemetry terminal i is at T0, T1, T2... time, its observation is D i (0),D i (1),D i (2), ..., and assuming that the current is T1, the above process can be specifically expressed as the following steps:

[0030] Step 100: The sensor of telemetry terminal i measures t...

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Abstract

The invention discloses a state estimation based intelligent power grid dynamic data encryption method. The method includes: each telemetering terminal divides observation data into reporting data and retention data, uses the retention data to generate a dynamic key to encrypt the reporting data, generates a ciphertext and transmits the ciphertext to a control center; and the control center computes the retention data of each telemetering terminal based on a state estimation method to generate a dynamic key and decrypts the ciphertext transmitted by each telemetering terminal, so that the reporting data of each telemetering terminal are obtained. Synchronous dynamic key generation can be realized between the intelligent power grid control center and each remote terminal without key distribution, and communication safety in an intelligent power grid is effectively improved while computing complexity, energy consumption and hardware cost of terminal equipment are lowered effectively.

Description

Technical field: [0001] The invention relates to the technical field of smart grid security communication, in particular to a smart grid communication encryption method using state estimation to generate a dynamic key. Background technique: [0002] Smart grid uses information network technology to monitor and optimize the power generation, power distribution and power consumption equipment in the power network in real time, so as to achieve energy saving, emission reduction and other goals. How to ensure the security and privacy of data in the power network during transmission is the basis for the stable operation of the smart grid. At present, the smart grid mainly uses various symmetric and asymmetric encryption technologies to ensure the security of communication. However, it is difficult to ensure the security and reliability of the communication process by using common encryption technologies alone. The serious hidden dangers mainly lie in: [0003] (1) The widespread...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/08
Inventor 刘烃管晓宏毛亚珊孙亚楠刘杨
Owner JIANGSU BOZHI SOFTWARE TECH CO LTD
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