Frequent Photovoltaic Fire Incidents - A Risk That Cannot Be Ignored

As the PV industry continues to expand, the scale of PV systems is growing, bringing ever-greater potential fire risks. Distributed PV systems have seen an increasing number of fire incidents, raising concerns across various sectors.

Module-Level Intelligent Controller: Ensuring Safety with Advanced Protection

To address the safety risks associated with traditional distributed PV systems, such as the inability to achieve module-level shutdown, complex operations and maintenance (O&M) challenges, Suzhou UKT New Energy Technology Co., Ltd. ("UKT") has developed its module-level intelligent controller. This solution enhances PV system safety at its core, offering the following key features:

Module-Level Rapid Shutdown & Response

• Regulations require that in emergency situations, PV system voltage must be reduced to a safe level within 30 seconds. UKT's product can achieve shutdown in less than 10 seconds, ensuring the safety of firefighters and maintenance personnel.

• Supports multiple shutdown modes, providing multi-layered protection to safeguard the PV system.

Comprehensive Safety Protection

UKT's module-level intelligent controller establishes an all-encompassing, full-lifecycle safety protection framework. From pre-installation, installation and commissioning, to operational phases, it ensures robust security:

• Complete shutdown during module manufacturing, transportation, and on-site installation  to guarantee safety.
• Cloud platform-controlled grid-connected power activation, preventing mismatched module string quantities, reverse current flow between modules or strings, and pre-grid-connect breakdown issues.
• Overvoltage, over-temperature, and reverse current protection - automatic module shutdown upon anomalies to ensure safe power generation.

Reverse Current Monitoring – Safeguarding PV System Stability

Application Background
During the installation and operation of PV modules, voltage differentials caused by module variations, installation mismatch or shading can result in reverse current flow between PV strings, leading to abnormal power generation and severe incidents such as fires.
UKT’s module-level intelligent controller supports real-time reverse current monitoring, early detection of reverse current flow, and automatic circuit isolation, preventing accidents and ensuring stable operation of PV systems. It is fully compatible with anti-reverse current mechanisms between modules and strings and can autonomously restore power generation once currents normalize.
Additionally, UKT’s controller enables automated system control during reverse current monitoring and mitigation, eliminating the need for manual intervention and significantly reducing PV system O&M costs.

Module-Level Monitoring, Control & O&M Optimization

• Real-time monitoring of module voltage, current, and temperature with precise power generation assessment, intelligent fault diagnostics, and predictive alerts for efficient troubleshooting.

Wireless Communication & Flexible Deployment

• Multi-modal wireless networking for flexible deployment, large system capacity, fast response, and reliable communication.

Power Generation Assurance

• Ultra-low power consumption design for enhanced sustainability and reduced carbon footprint.
• Automatic module fault isolation to ensure uninterrupted power generation.

Smart Energy Management Platform: Precision Intelligent O&M

UKT's Smart Energy Management Platform employs a “1+N” architecture - one unified management system integrating multiple intelligent PV solutions, including module-level intelligent controllers, optimizers, and microinverters. This enables centralized management and optimized O&M for PV systems, spanning installation, monitoring, alerts, analytics, and response measures across the entire operational lifecycle.