Project Background and restricted Zone Management Challenges
At a large-scale 4x600MW thermal power plant, the indoor distribution rooms, massive steam turbine halls, and high-voltage switchgear zones represent the operational core of the facility. Because these indoor zones house extremely high-voltage electrical panels, rotating machinery, and pressurized steam lines, managing access control and continuous safety monitoring is critical to preventing accidents. Under traditional plant management protocols, security patrols in these areas were conducted manually by security guards, and access was controlled through standard physical key systems. This manual approach created notable safety gaps, as human patrols could not be done continuously, exposing staff to high-voltage hazards, while physical keys were easily lost, making it difficult to enforce strict access control or verify personnel safety gear.
Operational Obstacles in Confined Electrical Spaces
The limitations of traditional monitoring were particularly evident in high-voltage switchgear rooms and turbine hall access points. Switchgear rooms contain dozens of long rows of electrical cabinets. Fixed-position CCTV cameras frequently suffered from visual blind spots caused by dense panel arrangements, making it difficult to monitor panel status lights, analog meters, or localized overheating continuously. Furthermore, manual inspection of these high-voltage cabinets carried risks of accidental contact or electrical arc flash injuries for personnel. At the entrances of these high-risk areas, verifying whether entering workers possessed proper authorization and complied with personal protective equipment (PPE) requirements was nearly impossible to monitor around the clock without automated assistance.
Implementing WThink’s Robotic Inspection and Access Solution
To establish a highly reliable security and safety network, the thermal plant implemented WThink’s High-Risk Area Security & Access Control solution. This integrated system pairs track-mounted intelligent inspection robots (rail-crawler cameras) with smart access control terminals positioned at the entryways of all restricted zones. Connected to a centralized AI analytics platform, the system automates both continuous indoor parameter audits and strict personal compliance checks, creating an intelligent, multi-layered protective boundary around the plant’s high-risk infrastructure.
Track-Mounted Automated Inspection and Parameter Audits
For internal switchgear and distribution rooms, the plant utilizes WThink’s track-mounted intelligent inspection robot. Suspended from an overhead ceiling rail, the robot glides autonomously along the rows of electrical cabinets. Equipped with high-resolution PTZ optical cameras, thermal infrared sensors, and precision audio monitoring systems, the robot scans each panel in detail. The built-in AI models automatically read analog dials, verify the status of panel indicator lights, monitor for localized hot spots, and listen for abnormal arc sounds or high-frequency vibrations. This continuous mobile inspection completely covers the visual blind spots of static cameras, providing precise diagnostic data to the central control room while keeping human operators safely away from high-voltage risks.
Intelligent Entry Control and PPE Compliance Verification
At the entryways of the turbine halls, boiler areas, and substations, the system deploys smart access control gates equipped with advanced facial recognition and AI behavioral analysis. When a worker attempts to enter, the terminal scans their face and credentials to verify authorization, while the built-in cameras perform an automated PPE compliance audit. The AI models check for the presence of safety helmets, high-visibility vests, and protective footwear. If the system detects unauthorized entry or notes that a worker is missing essential safety gear, the turnstile gate remains locked, and an immediate warning is sent to the central control room. The deployment of WThink’s High-Risk Area Security & Access Control system has successfully transformed the plant’s indoor safety operations, reducing manual patrol requirements by eighty percent and ensuring strict, automated compliance with safety standards across all high-risk zones.