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HiSilicon PLC PV Technology Bringing Solar Energy to Every Home and Business

HiSilicon PLC — The Go-to Connectivity Technology for PV Energy | HiSilicon

HiSilicon PLC PV Technology

Bringing Solar Energy to Every Home and Business

Explore PLC >
Dual Carbon Strategy,Accelerating Power System Transformation
Dual Carbon Strategy
Accelerating Power System Transformation
PV: The Driving Force of Energy Development

Greener power generation

Renewables are becoming the dominant energy paradigm

 Renewable energy
(solar, wind)

 Fossil energy

Electrified energy consumption

Electric energy is now critical to reducing carbon emissions

School and government buildings
Commercial buildings

 Electric energy

Public buildings

 Bioenergy

Residential buildings

 Fossil energy

Rapid Increase in Distributed PV Installations
Rooftop distributed PV is more space and power-efficient, and is now seen on industrial, commercial, and residential buildings, including schools, factories and hospitals.

School and government buildings

Commercial buildings

Public buildings

Residential buildings

Opportunities Brought by
Distributed Power Development

Large-scale grid-tied
PV power generation

• Surge in PV installations
• Scheduled management of PV intermittency and fluctuation

Ubiquitous connectivity
of electrical equipment

• Endows mechanical and electrical equipment with intelligent capabilities
• Enhances real-time sensing and O&M efficient of switches/circuit breakers at all levels

Synergy between power
generation and consumption

• Microgrid with self-consumption PV storage management
• Power consumption management for smart homes
• Transformer district overload management and charging pile controls
Major
Challenges

Challenge 1

Addressing serious safety threats, such as fires and electric shocks

System safety has become a major challenge for the development of distributed PV. For example, fires at PV plants occur due to DC arcing. This occurs because up to 600–1000 V of DC voltage remains after the inverters are shut down, an amount that cannot be eliminated. As a result, electric shocks may occur at any location along the power lines. Worse yet, firefighters are unable to climb onto roofs to perform rescues, causing property damage and undermining safety.

Rapid shutdown and arc detection: key to PV safety

Learn More >

Rooftop photovoltaic power system faces potential safety hazards such as fire and electric shock

Challenge 1

Addressing serious safety threats, such as fires and electric shocks

Rooftop photovoltaic power system faces potential safety hazards such as fire and electric shock

System safety has become a major challenge for the development of distributed PV. For example, fires at PV plants occur due to DC arcing. This occurs because up to 600–1000 V of DC voltage remains after the inverters are shut down, an amount that cannot be eliminated. As a result, electric shocks may occur at any location along the power lines. Worse yet, firefighters are unable to climb onto roofs to perform rescues, causing property damage and undermining safety.

Rapid shutdown and arc detection: key to PV safety

Learn More >

What is the root cause of solar fires?

DC arcing
1. What is DC arcing?
DC arcing is an electrical breakdown in the air
that produces a prolonged electrical discharge.
2. What are the hazards of DC arcing?
Arcing causes the temperature to soar to up to 3000°C,
which can lead to fires.
High DC voltages and currents can place installation
and maintenance personnel in grave danger.
Why is DC arcing hard to detect?
Arc noise signals account for only 0.1% of normal current
signals, and are too weak to trigger an alarm.
A myriad of interference signals from the inverters, loads,
and grid overlap with the spectrum of normal current
signals, triggering false alarms.
close

What is the root cause of solar fires?

DC arcing

1. What is DC arcing?
DC arcing is an electrical breakdown in the air that produces a prolonged electrical discharge.
2. What are the hazards of DC arcing?
Arcing causes the temperature to soar to up to 3000°C, which can lead to fires.
High DC voltages and currents can place installation and maintenance personnel in grave danger.
3. Why is DC arcing hard to detect?
Arc noise signals account for only 0.1% of normal current signals, and are too weak to trigger an alarm.
A myriad of interference signals from the inverters, loads, and grid overlap with the spectrum of normal current signals, triggering false alarms.
Photovoltaic energy generation and O&M efficiency are restricted by many factors.

Challenge 2

Optimizing grid-tied power generation efficiency and reducing system costs

PV power yields are subject to natural conditions and shading from surrounding buildings. In addition, O&M issues caused by a high proportion of distributed PV grid connections, such as plant operation, power quality, fault locating, and maintenance costs, have become practical challenges to be resolved by new power systems.

Bidirectional communication and module-level detection are the core of efficiency optimization.

Challenge 2

Optimizing grid-tied power generation efficiency and reducing system costs

Photovoltaic energy generation and O&M efficiency are restricted by many factors.

PV power yields are subject to natural conditions and shading from surrounding buildings. In addition, O&M issues caused by a high proportion of distributed PV grid connections, such as plant operation, power quality, fault locating, and maintenance costs, have become practical challenges to be resolved by new power systems.

Bidirectional communication and module-level detection
are the core of efficiency optimization.

HiSilicon Power System
Technical Solution

PLC is the go-to technology for PV connectivity. HiSilicon has long been dedicated to PLC technology R&D and standard formulation. HiSilicon has promoted PV technology, and key innovations, such as grid-tied PV, smart grids, and smart home power consumption, by working closely with industry partners.

HiSilicon Power System Technical Solution

Technology
Highlights

Proactive Safety Protection
0.5s Fast Shutdown + Precise Arc Detection
HiSilicon power system technology to identify arcs and shut down inverters in 0.5 seconds to prevent fires

SunSpec-certified

0.5s module-level fast shutdown

Arc protection helps identify arcs and shuts down inverters within 0.5s to prevent fires. Enhanced arc protection for industrial and commercial scenarios allows for detection as sensitive as 200 m/26 A.

The HiSilicon power system technology rapidly reduces the rooftop voltage to 0 V in emergency scenarios, improving personal and property security.

0 V voltage protection

Optimizer-based precise arc fault locating

PV modules work with smart PV optimizers to quickly reduce the rooftop voltage to 0 V during installation, maintenance, and fire extinguishing, in the event of an emergency. This helps prevent electric shocks and falls.

Proactive Safety Protection
0.5s Fast Shutdown +
Precise Arc Detection
HiSilicon power system technology to identify arcs and shut down inverters in 0.5 seconds to prevent fires

SunSpec-certified

0.5s module-level fast shutdown

Arc protection helps identify arcs and shuts down inverters within 0.5s to prevent fires. Enhanced arc protection for industrial and commercial scenarios allows for detection as sensitive as 200 m/26 A.

The HiSilicon power system technology rapidly reduces the rooftop voltage to 0 V in emergency scenarios, improving personal and property security.

0 V voltage protection

Optimizer-based precise arc fault locating

PV modules work with smart PV optimizers to quickly reduce the rooftop voltage to 0 V during installation, maintenance, and fire extinguishing, in the event of an emergency. This helps prevent electric shocks and falls.

Bidirectional Communication
10x Higher Interference Immunity

  • • Professional anti-noise design
    HiSilicon all-scenario noise simulation verification, to boost communication performance by over 10x

  • • PLC+RF dual-mode, multi-channel
    High reporting accuracy, more stable power supply

20% More Efficient at
Generating Power

  • • Module-level monitoring and optimization, to reduce system and scheduling costs

  • • Module-level maximum power point tracking (MPPT), to boost power generation efficiency by 20%*

  • • 25+ years of service life, to boost PV return on investment (ROI)

20% More Efficient at Generating Power
Bidirectional Communication
10x Higher Interference Immunity

  • • Professional anti-noise design
    HiSilicon all-scenario noise simulation verification, to boost communication performance by over 10x

  • • PLC+RF dual-mode, multi-channel
    High reporting accuracy, more stable power supply

20% More Efficient at
Generating Power
20% More Efficient at Generating Power

  • • Module-level monitoring and optimization, to reduce system and scheduling costs

  • • Module-level maximum power point tracking (MPPT), to boost power generation efficiency by 20%*

  • • 25+ years of service life, to boost PV return on investment (ROI)

*Data source: China market data

*The power generation efficiency is subject to the surrounding environment. 20% is roughly the maximum efficiency growth.

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