Common-optical fiber transmission method for multiuser quantum key distribution of power systems

A technology for quantum key distribution and power system, applied in the field of power system communication, can solve the problem of inconsistent pacing between quantum signals and synchronization signals, and achieve the effect of promoting practicality, saving costs, and solving delay problems

Active Publication Date: 2015-04-01
STATE GRID CORP OF CHINA +3
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Problems solved by technology

On the basis of the point-to-point quantum key distribution system, the present invention provides a co-fiber transmission method for multi-user quantum key distribution in power systems, which solves the "inconsistent step" in the transmission process of quantum signals and synchronous signals problems, and reduces the crosstalk between synchronous signals and quantum signals and between multi-user signals, which saves costs and is conducive to promoting the practical application of quantum key distribution in power optical fiber private networks

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  • Common-optical fiber transmission method for multiuser quantum key distribution of power systems
  • Common-optical fiber transmission method for multiuser quantum key distribution of power systems

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[0046] attached figure 2 Scenario 1: When the remote control center sends control information to multiple substations, the quantum key can be used to encrypt the control information between the remote control center and the substations. If the number of substations is 3, it is necessary to use the The co-fiber transmission method allocates the wavelengths of the synchronous signals and quantum signals of the three substations. The specific implementation process is as follows:

[0047] Step 1: Equip the substation with a quantum transmission device to generate a quantum key to encrypt the control information. The channel interval between the quantum signal and the synchronous signal in the same substation is 1.6nm, and the center wavelength selected by each user is in the 1550nm band, and Meet the standard recommendations of ITU-T;

[0048] Step 2: Multiplex the signals of multiple substations in one optical fiber for transmission. The signal interval between adjacent substa...

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Abstract

The invention provides a common-optical fiber transmission method for the multiuser quantum key distribution of power systems, which includes the following steps: a channel type in a WDM (Wavelength Division Multiplex) optical fiber is defined; wavelength allocation is carried out on each user; common-optical fiber transmission in multiuser quantum key distribution is implemented. The common-optical fiber transmission method for the multiuser quantum key distribution of the power systems which is provided by the invention solves the problem of incoordination in the process of transmitting quantum signals and synchronizing signals, thus reducing the signal crosstalk between the synchronizing signals and the quantum signals and between multiple users, reducing cost, and helping to promote the practice of quantum key distribution in private optical fiber power networks.

Description

technical field [0001] The invention relates to the technical field of power system communication, in particular to a co-fiber transmission method for multi-user quantum key distribution in a power system. Background technique [0002] In addition to generating single-photon quantum signals as keys to realize quantum encryption, it is also necessary to transmit protocol and measurement base information required for protocol execution and synchronization information required for detection. The signals carrying these two types of information are traditional classical signals (with Corresponding to the single photon signal), in order to distinguish the former is called the base signal, and the latter is called the synchronization signal. The base signal can be transmitted in the public network that transmits the user data signal, and can be in the form of an optical signal or an electrical signal. Different from ordinary buried optical cables, the length of power overhead opti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L9/08
Inventor 周静孙咏梅卢利锋牛佳宁雷煜卿张庚刘国军胡紫巍张威
Owner STATE GRID CORP OF CHINA
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