In the new energy sector, photovoltaic and wind power projects are expanding into remote areas with scattered equipment layout. Faults in conventional power transmission easily trigger abnormal data, disrupted power dispatching and equipment shutdowns, resulting in power generation losses and extra maintenance costs, which greatly hinder cost reduction and efficiency improvement.
Ⅰ. Challenges in the New Energy Industry
• Traditional copper cables suffer from electromagnetic and ground loop interference.
• Restricted transmission range and heavy signal attenuation cause inaccurate data and unstable system performance.
• High wiring expenses and tough daily maintenance bring extra operational burdens.
• Signal drift and misjudgment arise under extreme conditions, impairing production safety and efficiency.
Ⅱ. Solutions & Countermeasures
To tackle defects of conventional transmission, point-to-point analog fiber transmission effectively solves on-site transmission issues, with core advantages as follows:
1️⃣ Adapt to Scattered Sites
Suitable for dispersed PV and wind power equipment. Direct connection between field devices and control center without complex wiring or relays, cutting maintenance costs.
2️⃣ Multi-channel Synchronous Collection
Supports 1-4 channels of 4~20mA analog signals. Collect irradiance, temperature, wind speed and other data of power units and box transformers simultaneously.
3️⃣ Stable Long-distance Transmission
Fiber direct connection needs no signal amplifiers. Resists electromagnetic interference, ensuring accurate data and fewer faults over long ranges.
4️⃣ Compatible & Easy Networking
No protocol conversion needed. Directly connect to PLC, touch screens and industrial controllers. Fits PV, wind power and booster stations, simplifying equipment assembly.
Ⅲ. Core Advantages of Comark Analog Fiber Optic Converter
✅Industrial design, supports 4-20mA signal and 1~4 channels unidirectional/bidirectional analog current transmission
✅Maximum relay-free transmission distance up to 40km via single-mode fiber
✅Triple isolation and Class 4 industrial EMC design deliver strong anti-interference capability
✅High-speed high-precision sampling, signal latency less than 1ms
✅Working voltage: 18~36V, IP40 protection grade
✅Wide temperature range: -40~+85℃, easy DIN rail mounting and simple operation
Ⅳ. Practical Cases
This solution has been successfully implemented in a 500kV wind power station, achieving prominent practical application results, which are summarized as follows:
- Stable signal transmission: The system realizes zero signal drift during long-term field operation and guarantees accurate and reliable data transmission.
- Improved power generation efficiency: Stable and precise signal transmission effectively optimizes unit operation performance, raising the overall power generation efficiency by 30%.
- Significant cost reduction: The solution simplifies on-site wiring layout and lowers daily operation and maintenance expenses, reducing the customer’s total project budget by over 60%.
- High operational reliability and efficiency: The equipment boasts an MTBF (Mean Time Between Failures) of more than 100,000 hours, improving the overall operation and maintenance efficiency of the wind power station by 90%.
Ⅴ. Conclusion
Boasting stable long-distance transmission and strong anti-interference capability, Comark industrial analog fiber converters eliminate issues like electromagnetic interference, signal attenuation and short transmission range of conventional cables. Widely used for analog signal collection and transmission in new energy power stations, they cut costs on long-distance copper cabling, deliver steady signal performance and help users reduce costs and boost efficiency, earning wide industry approval.
