I. Requirements Analysis

The rapid advancement of quantum computing poses a serious threat to existing cryptographic technologies. Guided by the strategic requirements of the global energy internet, the power industry adheres to the principles of "security zoning, dedicated networks, horizontal isolation, and vertical authentication." It has issued the "Notice on Matters Decided for Research and Application of Quantum Communication Technology," committing to explore the application of quantum communication technology to achieve technological upgrades and ensure network information security.

The Quantum Key Management Center is an integrated control device combining identity authentication, device management, service monitoring, and routing computation. When paired with quantum key service terminals, it enables multi-tiered distributed quantum key application management and facilitates the deployment of large-scale, multi-node, scalable quantum key distribution networks. Its flexible networking architecture allows for easy expansion and has been implemented in multiple quantum communication networks.

II. Working Principle

The Quantum Key Management Center primarily implements management functions for large-scale, multi-form quantum devices and quantum application equipment, along with quantum key relay routing control. It designs and deploys security measures including identity authentication, permission management, and audit protection. Working in conjunction with quantum key service terminals, it achieves multi-tiered distributed quantum key application management, supporting the networking of large-scale, multi-node, scalable quantum key distribution networks.

III. Features and Functions

1. Supports large-scale quantum device management;

2. Supports large-scale quantum key trusted relay routing computation;

3. Support for multi-form quantum application devices;

4. Supports multi-faceted security protection;

5. Centralized and unified management.

IV. Typical Applications

1. Security Control for Power Dispatch Command Systems: Protection of Interprovincial/Interregional Dispatch Instructions

① Establish a five-tier quantum key security management system encompassing national, network, provincial, regional, and county levels, implementing dynamic encryption with unique keys for each dispatch instruction.

② Provide quantum-level security protection for SCADA system "four remote" (remote measurement, remote signaling, remote control, remote adjustment) data to prevent hijacking of control commands;

③ Real-time monitoring and scheduling of communication links, automatically detecting and alerting potential eavesdropping activities, with bit error rate reduced from the traditional 1e-6 to 1e-18;

④ Full Key Lifecycle Management: Unified control from generation and distribution to destruction;

⑤ Multi-dimensional security auditing: Records key usage to enable accountability tracing;

⑥ Intelligent Routing Calculation: Automatically selects key distribution paths to enhance transmission efficiency.

2. Substation Security Protection and Monitoring: Protection of On-site Automation Systems

① Encrypt IEC 61850 protocol communications to prevent tampering with control commands in smart substations;

② Provide quantum-secure authentication for relay protection devices to ensure the accuracy of protective actions;

③ Establish a security mechanism combining a "quantum key management platform with mobile terminals" to ensure inspection data transmission remains secure against interception.

④ Provide tamper-proof quantum identity authentication for drone nests and inspection robots to prevent "fake inspections."

3. Grid Integration Safety Assurance for New Energy: Secure Transmission of Aggregated Distributed Energy

① Innovative two-stage quantum encryption solution featuring aggregation and access: First, dispersed micro-hydro/photovoltaic data is aggregated via wireless quantum encryption, then transmitted to the dispatch system through fiber-optic quantum encryption.

② Provide quantum-encrypted protection for AGC/AVC commands in wind farms and photovoltaic power stations to prevent "pseudo-grid connection";

③ Achieve bidirectional quantum authentication between new energy inverters and the power grid to ensure power quality and grid stability.

4. Security Enhancement for Distribution Network Automation: Security Management of Distribution Network Terminals

① Provide quantum key dynamic update services for distribution terminals such as FTUs, DTUs, and TTUs to prevent device cloning;

② By integrating "quantum + 5G" technology, establish a virtual private network for distribution systems. Implement quantum encryption of operational data on control terminals to ensure the security of fault location and isolation commands.

③ Intelligent Distributed FA Protection: Enables rapid fault location and isolation in distribution networks through quantum key management, achieving millisecond-level response times.