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Compliant with HDC standards, applicable to power grid STA applications
• Compliance with the dual-mode communication interoperability technical specification of State Grid and the dual-mode communication technical specifications of the metering automation system of China Southern Power Grid.
• Wide support of frequency bands and modulation modes: frequency bands of 0.7–12 MHz, OFDM technology, and BPSK, QPSK, and 16-QAM modulation modes for PLC; OFDM, OQPSK, and GFSK modulation modes for wireless communication.
• Access from up to 2000 devices, fast networking (3 to 5 minutes for a typical 3-layer network with 500 devices), and automatic switching between HPLC and HRF.
• Stellar communication performance, with industry-leading anti-attenuation and anti-noise capabilities.
• Physical topology identification and minute-level data reporting: The physical topology for low-voltage transformer districts can be identified within 4 hours on average, at an accuracy of higher than 98%, all without increasing hardware costs or compromising power grid quality. The timeslot reservation mechanism at the link layer implements proactive reporting of data in minutes. Data of 200 nodes can be reported within 45 seconds, at a success rate of higher than 99%.
• Open, yet secure development environment for system operations: Powered by Huawei's open-source LiteOS, the chipset supports various encryption algorithms, such as AES, SHA-256, SM2, SM3, and SM4.
Communications Protocols• Dual-mode communication interoperability technical specification of State Grid
• Dual-mode communication technical specifications of the metering automation system of China Southern Power Grid |
Communication Specifications• Frequency bands: 0.7–12 MHz for PLC; 470–510 MHz for wireless communication
• Peak rate at the physical layer: 6 Mbps • Peak rate at the application layer: 2 Mbps • Receiver sensitivity: better than 0.2 mVpp • Peak rate at the physical layer for wireless communication: 0.99 Mbps • Receiver sensitivity for wireless communication: better than –88 dBm |
CPUs• RISC-V processor, maximum working frequency of 200 MHz
• Cache supported • 32-bit word-length single-precision floating-point operations |
Memory• Embedded SRAM: 416 KB
• Flash memory: 2 MB |
System• 3.3 V I/O
• Clock source: 25 MHz crystal oscillator |
Peripherals• 2x SPI interfaces
• 1x I2C interface • 3x UART interfaces • 20x GPIO interfaces • 1x ADC input (10-bit, 3 channels) • 10-channel PWM |
Power Consumption• Static power consumption: < 118 mw
• Average power consumption of the module < 300 mw |
Security• Hardware implemented :
- Encryption and decryption: AES-128 and AES-256 - Signature verification: RSA and ECC - Hashing: Hash-SHA256 and HMAC_SHA256 - SM2/3/4 - Random number generator compliant the FIPS 140-2 standard • eFuse for chipset ID and key storage, secure boot, and secure update |
Application• Dynamic routing and multipath addressing
• HPLC and HRF dual-mode communication and adaptive routing • IPv6/IPv4 protocol stack • Remote network management • Automatic identification of transformer districts, physical topology, and meter profiles • Automatic identification of user-transformer relationships, transformer districts, and meters • Automatic identification of physical phases to meet phase-based line loss calculation requirements • Automatic generation and reporting of meter profiles • Identification of the physical topology of power lines |
Packaging• TFBGA
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