Project Background
The Malaysia Lee & Man Paper Selangor Thermal Power Plant Project is a key supporting infrastructure for Lee & Man Paper’s paper production base in Selangor, Malaysia. It includes two 30MW gas turbine units and supporting systems. The project involves 67 high-voltage switchgear panels, including incoming, PT, and outgoing cabinets, placing stringent requirements on power system safety and stability.
Project Challanges
Substation busbars, cables, and circuit breakers operate under high voltage and high current for extended periods. Enclosed equipment such as HV switchgear has poor heat dissipation, making manual inspection inadequate for real-time temperature monitoring. Loose electrical connections or aging cables, if undetected, can lead to high-temperature fires, resulting in significant economic losses and even casualties.
Solution
To address these challenges, the project selected Acrel’s ASD320-P6-400 and ASD100G intelligent control units, ATE400 wireless temperature sensors, and ATC450-C wireless temperature transceivers, forming a comprehensive online temperature monitoring and intelligent control system for electrical connection points.
System Architecture
Product Configuration (Partial）
| Name | Location | Qty | 功能描述 Function Description |
|---|---|---|---|
| ASD320-P6-400 | Z-13AH 至 Z-32AH 等高压柜 | Multiple | Dynamic simulation diagram, live display & interlock, temperature & humidity control, wireless temperature measurement, electrical parameter measurement, RS485 communication |
| ATE400 | 各高压柜动/静触头 | 6 points per panel | CT induction powered, starting current ≥5A, range -50℃~125℃, accuracy ±1℃, lifespan ≥10 years |
| ATC450-C | 仪表室内导轨 | 1 per panel | Supports up to 60 ATE400 sensors, RS485 interface, Modbus protocol |
Technical Highlights
- Wireless Temperature Measurement：The ATE400 wireless temperature sensor uses inductive power harvesting, requiring no battery. With a starting current of ≥5A, accuracy of ±1℃, and lifespan exceeding 10 years, it eliminates wiring difficulties and high maintenance costs associated with traditional methods.
- Integrated Intelligent Control：The ASD320 integrates dynamic simulation diagrams, HV live display & interlock, automatic temperature & humidity control, switching operations, presence detection, and pre-open/pre-close flash indication, achieving multiple functions in one unit and simplifying cabinet wiring.
- Real-time Data Upload: Temperature data flows from sensors to ATC450 transceivers, then to ASD320 control units, and finally to the backend system for real-time transmission, with configurable alarm thresholds for timely warnings.
Conclusion
Acrel’s ASD320/ASD100G intelligent control units and ATE400 wireless temperature measurement system have been successfully applied in the Malaysia Lee & Man Paper Selangor Thermal Power Plant Project. They effectively enable real-time temperature monitoring and intelligent control of HV switchgear connection points, providing reliable support for safe and stable plant operation and embodying the modern power maintenance philosophy of “prevention first, monitoring ahead.”
About Acrel
Acrel Electric Co., Ltd. specializes in intelligent power distribution system solutions, covering power monitoring, energy management, and electrical safety, dedicated to providing safe, reliable, and efficient electrical products and services worldwide.
