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HiSilicon HPLC

Propelling New Power Systems

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Technological Trends
Technical Challenges
In-depth Applications
Dual-Mode Technology
Case Study
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A new power system paradigm

has arrived! A new power system paradigm has arrived!

Clean

Low Carbon

Intelligent

The transition toward low-carbon energy solutions has inspired utility providers to build new energy power systems that harness intelligent and connected capabilities.

Three Challenges

Facing New Power Systems

Resource

Lack of coordination can hinder the quality and stability of new energy power systems.

Line

Power line devices are walled off from each other, and lack integrated communications and network controls, which necessitates the transition toward intelligent, connected, and all-sensing networks.

Load

New energy access can lead to power grid overload, and therefore management and control of off-peak power consumption and coordinated charging are major pain points.

HPLC:

The Preferred Choice for New Power Systems

Connectivity technology in low-voltage power distribution and utilization is key to addressing the challenges of new power systems. That's where HiSilicon's HPLC solution comes into the picture. HiSilicon has been deeply engaged in the power and IoT communication fields for years. In 2019, HiSilicon and China Electric Power Research Institute (CEPRI) released the In-depth Use Cases of Low-Voltage Power Distribution and Utilization Based on High-speed Power Line Communications (HPLC) Technology V2.7, which includes use cases related to frequent data collection, transformer district identification, power outage reporting, NMS detection, ID management, archive synchronization, clock management, and phase identification, covering diverse service scenarios like national network cable loss control, spot power transaction, and power outage reporting.

In-depth

Applications

Frequent Data Collection

Collects power consumption data, such as that from power and electricity meters, in a matter of minutes. This allows for effective control of off-peak power consumption and coordinated charging, precise matching between power supplies and loads, and highly reliable power distribution networks for new energy power supplies.

Minute-level real-time data collection

Transformer District Identification

Thanks to software-based transformer district identification, members in different transformer districts are accurately distinguished, resulting in 99% accurate meter-transformer relationship identification and tech-driven line loss management.

Accuracy > 99%

Software-based Branch Identification

Data-driven topology identification for physical distribution network branches is conducted by harnessing the transformer district identification results and voltage and current information, as well as through knowledge of the PLC characteristics. These identification results make it easy to calculate the actual physical line loss and line impedance and accurately locate faults.

Precise line loss analysis

Phase Topology Identification

By tapping into the phase difference between the zero-crossing points of the three-phase 220 V AC power supply, the phase where the power supply is located can be identified efficiently and accurately. This helps mitigate the three-phase unbalance and line loss, and improves the reliability of power supplies.

Higher power supply reliability

Power Outage Reporting

Thanks to early fault detection and proactive reporting of power outage and recovery events, the focus can shift from passive to proactive maintenance, which improves the reliability and level of service for power supplies.

Precise fault detection

Frequent Data Collection

Minute-level real-time data collection

Transformer District Identification

Accuracy > 99%

Software-based Branch Identification

Precise line loss analysis

Phase Topology Identification

Higher power supply reliability

Power Outage Reporting

Precise fault detection

HPLC+HRF Dual-Mode

Enhanced Low-Voltage Power Distribution Network Connection Technology

HPLC+HRF dual-mode technology is the key to the future for low-voltage power grids, and offers a range of benefits, including secure and reliable network access for devices in transformer districts; panoramic monitoring and real-time sensing of devices on the resource, power grid, and load sides; refined O&M management, precise load prediction, and flexible adjustment. These traits enable the low-voltage end of the power grid to harness the capabilities of fully-connected, wide-reaching, and uber-efficient digital networks.

HPLC+HRF Dual-Mode:

Key Capabilities

Real-time Collection

Minute-level data collection increases available service bandwidths and enhances real-time performance. Big data is leveraged to assist with precise line loss analysis, real-time, bidirectional resource-load interactions and controls, and supply-demand balance.

Precise Fault Detection

Higher fault reporting accuracy and reliability is made possible through dual-mode, multi-channel reporting. Software-based topology identification allows for accurate early detection of line faults and subsequent automatic fault isolation.

Service Addition and Capacity Expansion

With the wide array of low-voltage services now supported, the service portfolio has been significantly expanded to encompass: collection meters, switches, charging piles, distributed PV modules, energy storage devices, indoor metering devices, sensors, and smart box locks. Network expansion equips the primary network to accommodate up to 2000 devices, with expandable sub-networks.

End-aware Connections Across All Scenarios

The data from the source, line, and load levels of the low-voltage power grid makes the power grid running status visible in real time. This is consolidated by multi-channel communications and the backbone network on the low-voltage transformer district side, which allows sensors at all levels to connect to the power grid.

HPLC+HRF Dual-Mode:

Spurring Ongoing Service Improvements

HPLC

Dual-Mode

Data collection frequency

Frequent data
collection

Minute-level data collection (in real-time) The use of dual-mode and multi-channel boosts network bandwidth and expands the scope of available real-time services, such as real-time bidirectional resource-load interactions and controls, electricity spot market transactions, and PV power generation status monitoring.

Power supply reliability*

Power outage
reporting
through
crosstalk

Allows for real-time data collection and power outage reporting via dual-mode and multi-channel, with accuracy of 99.9%

Service diversity+
Network expansion

Focus on meter
reading
scenarios

Covers a wide range of scenarios, including meter reading, multi-function meters, circuit breakers, switches, charging piles, sensors, and smart box locks

Highlights of HiSilicon's Next-Generation

Dual-Mode Solution

Broader
connections

Less power
consumed

Enhanced
performance

More secure

In-depth
applications

Broader connections

•

Up to 2000 node connections

•

Supported on a broad range of different devices, including battery-powered devices, thanks to single-mode HRF

•

Mesh and star networks, for meter reading and low-power node access

Less power consumed

•

Low-power baseband receiving algorithm

•

More advanced process technology and better analog RF architecture

•

Comprehensive system design, to minimize power consumption during each phase

Enhanced performance

•

Continual improvements to anti-noise and anti-attenuation performance in HPLC

•

Better HRF frame structure and channel code than those seen in similar micropower technologies

•

Backup of HPLC and HRF routes, to strengthen networks

•

Higher bandwidth and better real-time data collection and control

More secure

•

SM2/SM3/SM4 encryption algorithms

•

International cryptographic algorithms: ECC, AES, and SHA

In-depth applications

No manual intervention required

•

Meter-transformer identification accuracy in transformer districts > 99%

•

Branch/Electrical topology identification accuracy > 99%

•

Line fault warning accuracy > 99%

Case Study

How the HPLC Minute-level Collection Solution Facilitates Seamless Grid-Connected PV Coordination

The HPLC solution has inspired the construction of a new power system in Henan province. Large-scale onsite tests in Kaifeng Lancao, Henan Province, reveal that HPLC has boosted data collection frequency from every 5 minutes to every minute, and resulted in a collection success rate of over 99%, without need to replace existing collection devices. The HPLC minute-level data collection solution meets the need for real-time data collection, making it easier for electric power customers to develop a diverse array of services, and coordinate grid-connected PV modules.

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* Power supply reliability: When a meter is powered off, the power outage event is reported through the module capacitor signal.

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