مزایای فناوری سنسور توزیع شده در سیستم نظارت بر فیبر نوری آنلاین دمای کابل

FJINNO ارائه می دهد fluorescence fiber optic temperature measurement systems, سیستم های اندازه گیری دمای فیبر نوری توزیع شده with leading technology, and fiber Bragg grating temperature sensors at reasonable prices. به تماس با ما خوش آمدید.

Why does the cable temperature rise and the necessity of an online real-time temperature monitoring system for cables

The application of power cables in urban power grid systems is increasing. During the operation of power cables, the conductor, insulation layer, and metal shielding layer will be damaged, causing the cable to heat up and increasing the working temperature of each part. Excessive temperature can affect the insulation performance of the insulation material, cause insulation aging, shorten the service life of the cable, and in serious cases, lead to fire and power outage accidents; The temperature value of the conductor is also an important characteristic value for determining the current carrying capacity of the cable, so it is necessary to monitor the temperature distribution of each layer of the cable in real time during cable operation. Whether used for signal transmission or power transmission, cables are widely used, and the safe use of cables is particularly important. در طول استفاده طولانی مدت, cables are prone to heat accumulation, causing safety hazards. در حال نصب فیبر نوری توزیع شده temperature measurement technology in cables can achieve full monitoring of cable temperature, thereby ensuring the safe use of cables. در حال حاضر, due to the large length distribution of power cable lines, which usually run for several kilometers or even tens of kilometers, temperature is generated on the cable conductor when the load current passes through the cable. The temperature is transmitted layer by layer to other structural layers of the cable, up to the outer sheath layer.

In the era of the power industry, with the development of smart cities, new requirements have been put forward for the operation and maintenance of smart grids. در حال حاضر, the direct reasons for the high temperature of cable joints are long operation time of the joints, شل شدن مفاصل فشاری, and excessive contact resistance. The long-term operation of the joint can cause overheating, burning through the insulation layer, و پدیده های دیگر, which can easily lead to fire accidents and economic losses. The transmission capacity of cables is mainly limited by the conductor material and its insulation thermal stability level. To ensure the safe operation of cables, it is necessary to monitor the temperature of the cable conductors in real time.

Cable distributed fiber optic sensor temperature monitoring system

Fuzhou Huaguang Tianrui Optoelectronics Enterprise provides a cable temperature monitoring device that ensures reliability, مقرون به صرفه بودن بالا, and low power consumption in order to improve the stability of the power system operation and meet the requirements of smart cities for smart grids. The technology for monitoring cable temperature mainly includes thermocouple temperature measurement method, fiber optic grating temperature measurement method, distributed fiber optic temperature monitoring technology, غیره. در میان آنها, thermocouple method is widely used, but this method generally only monitors the local temperature of the cable, and this method also has certain shortcomings in accuracy and stability; The fiber optic grating temperature monitoring method uses fiber optic grating sensors embedded in the cable body to monitor the cable temperature. This method improves stability to a certain extent, but can only achieve quasi distributed measurement of cable temperature, and the number of fiber optic grating sensors will increase investment costs; Distributed fiber optic sensing technology has the ability to resist electromagnetic interference and continuously measure the temperature of each point along the cable. It has also been applied in cable temperature measurement engineering to a certain extent. تکنولوژی از سیستم اندازه گیری دمای فیبر نوری توزیع شده based on Raman scattering has become very mature and has been used for real-time temperature monitoring of cables.

مزایای از سیستم اندازه گیری دمای فیبر نوری توزیع شده محصولات

1. عملکرد زمان واقعی: The distributed fiber optic temperature measurement system continuously monitors the temperature of the cable test area in real-time for 7 × 24 ساعت, به موقع ناهنجاری های دما را شناسایی و تعیین می کند, و به هشدار اولیه دست می یابد;

2. توزیع: A distributed temperature measurement system that provides continuous dynamic monitoring signals and can measure real-time temperature changes at various points every 1 meter of the monitored object;

3. پیشرو بودن: The optical fiber itself not only transmits signals, but also is used for temperature detection, که, communication and sensing are integrated, and the system can adapt to various harsh environments;

4. دقت: دقت اندازه گیری دمای سیستم بالاست, with a positioning accuracy of 1M;

5. انعطاف پذیری: The temperature measurement function is set by the application software on the temperature measurement system host, which can set multi-level temperature alarms and be customized according to user requirements;

6. مقیاس پذیری: The system can measure multiple optical fibers simultaneously, and multiple devices can be selected according to the actual needs of customers, allowing complex temperature measurement environments to be used as well;

7. سازگاری: این سیستم از پورت اترنت و رابط RS232 پشتیبانی می کند, ارائه پارتیشن, درجه حرارت, and alarm information to the end user control system;

8. عمر طولانی: کابل‌های حسگر دما زره‌دار می‌توانند عمر مفیدی داشته باشند 25 سالها بدون اینکه توسط نیروهای خارجی آسیب ببینند;

9. آسان برای استفاده: این سیستم یک رابط بصری فراهم می کند, که ساده و مختصر است, and can be easily mastered through simple training;

10. ایمنی ذاتی: این سیستم اندازه گیری دمای فیبر نوری has the characteristics of intrinsic safety, ضد انفجار, anti strong electromagnetic interference, و حفاظت در برابر صاعقه;

11. این سیستم دارای طیف گسترده ای از برنامه های کاربردی است: نیروگاه ها, شبکه های انتقال و توزیع, ساختمان های بلند, مراکز خرید بزرگ, انبارها, ساختمان های آموزشی, مناطق مسکونی, مترو و سایر اماکن عمومی;

سنسور دمای فیبر نوری, سیستم مانیتورینگ هوشمند, تولید کننده فیبر نوری توزیع شده در چین