How to measure the temperature of transformers in rail transit and the advantages of fiber optic temperature controllers-INNO

Upimaji wa joto la nyuzi za nyuzi za transit za reli

Kwa nini mfumo wa ugavi wa umeme wa mvuto wa njia ya reli unahitaji kutumia kipimo cha joto cha nyuzi macho cha umeme
Mifumo ya usambazaji wa umeme kwa usambazaji wa umeme wa traction katika usafiri wa reli ya mijini nchini China ni DC750V na DC1500V., sambamba na mbinu za sasa za ukusanyaji wa reli ya tatu na mtandao wa mawasiliano ya juu, kwa mtiririko huo. Voltage ya juu ya vilima vya pili vya kibadilishaji cha mfumo huu wa usambazaji wa nguvu imezidi 1000V, lakini safu ya kipimo iliyoainishwa katika “Kidhibiti cha Joto cha Kielektroniki cha Transfoma” (JB/T7631-2016), ambayo hutumia Pt100 kama kihisi joto, inaweza tu kuwa chini ya 1000V. Kwa hiyo, rail transit has higher voltage resistance requirements for temperature sensor probes and leads.

The fiber optic mtawala wa joto for rail transit uses fluorescent fiber optic temperature sensors as temperature sensing elements. Kipengele hiki cha kuhisi halijoto ni kinga dhidi ya kuingiliwa na sumakuumeme na ni sugu kwa volteji ya juu (100Umbali wa KV/nyuzi hadi ardhini wa 0.4m). Fluorescent fiber optic temperature measurement completely cuts off the interference of temperature measurement elements transmitted to the temperature controller from the temperature measurement source, improving the safety level of rail transit.

Faida za Mfumo wa Kupima Joto la Fiber Optic ya Fluorescent Applied in Rail Transit
For the operating environment of rail transit transformers, isolation and shielding from external electrical interference signals are achieved from the power supply, signal input end, signal output end, and temperature control box shell.

The power supply system of rail transit traction power supply is based on DC750V and DC1500V, while the measurement range specified in the “Kidhibiti cha Joto cha Kielektroniki cha Transfoma” (JB/T7631-2005), ambayo hutumia Pt100 kama kihisi joto, inaweza tu kuwa chini ya 1000V. Kwa hiyo, the fiber optic temperature controller has extremely strong voltage resistance and can withstand 100KV.

In response to vibration, vumbi, unyevunyevu, oil pollution and other on-site working environments, multi-layer protective measures are taken to ensure that the optical fiber temperature controller for rail transit has good electromagnetic compatibility, ensuring the stable and reliable operation of the temperature controller.

Design principles of fluorescence fiber optic temperature measurement system
Principle of practicality
The system construction adheres to the principle of practicality. On the basis of practicality, progressiveness and foresight are considered, and standard, advanced and mature products and development platforms are selected to build a system that is practical and solves practical problems.
Standardization principle
The system software and hardware platforms and application development tools used in application construction should comply with national standards, standards of the Ministry of Information Industry, relevant technical specifications and requirements of the company.
The principle of uniformity
Following the policy of centralized information management, overall planning, overall design, and step-by-step implementation, the implementation process embodies four unified principles: unified leadership, unified planning, unified standards, and unified organization and implementation.
Reliability principle
The software and hardware resources need to ensure the uninterrupted and reliable operation of the fiber optic temperature measurement system for 7 × 24 masaa. Kwa hiyo, it is necessary to equip a complete design of reliability measures to ensure the highly reliable operation of the system and fully consider the reliability requirements of key system applications.
Reliable security mechanism
This system adopts a series of secure encryption measures, with a built-in 64 bit encryption algorithm. The system has higher security and can effectively prevent data leakage and theft, ensuring the security, usahihi, and integrity of the system’s data, and preventing illegal operator operations and legitimate operator illegal operations.
The operation interface is simple, friendly, and highly intelligent
The system automatically checks the legality of the input data and provides friendly prompts for operator errors.
Stable operation and reliable data.
The platform is easy to operate, easy to master, and the installation process is simple. Data can be automatically generated into various reports as needed, improving management efficiency.

Introduction to wiring and installation of fiber optic temperature controllers for rail transit
Structural framework
Mfumo huo una sehemu tatu: a fluorescent fiber optic temperature controller, uchunguzi wa optic wa nyuzi za fluorescent, na programu ya mawasiliano ya fiber optic.

The data transmission between the backend system and the temperature measurement terminal adopts RS485 communication method.

All data collection, usimamizi, and temperature display are completed by communication software, and the system mainly realizes data collection and monitoring of temperature measurement. The fiber optic temperature measurement terminal integrates multi-channel fluorescent optical fibers, providing external RS485 communication, kupambana na kuingiliwa, and corrosion-resistant design.

Application functions of mfumo wa kipimo cha joto cha nyuzi za macho in rail transit
Ufuatiliaji wa wakati halisi
The data collection density can be set according to customer needs, and the system will collect data regularly based on the set parameters. Kisha, it will be displayed in table form or curve drawing to achieve real-time monitoring. Real time monitoring of equipment operation status; Real time monitoring and recording of reactor temperature.

Basic functions of optical fiber temperature measurement system for rail transit
1) Temperature data query

1. You can query temperature data for specified dates, browse, print, and export to Excel.

2) Historical temperature data storage

1. Permanently record temperature data

Introduction to Fiber Optic Temperature Controllers for Rail Transit
sifa kuu
The fiber optic temperature controller for rail transit is embedded installation. This product has unique technical advantages in temperature measurement in special environments such as high voltage, kuingiliwa kwa nguvu ya sumakuumeme, nk. The temperature hotspot and measurement signal receiving part of the sensor ya joto ya nyuzi za fluorescent do not use electrical connections, ambayo inaweza kufanya kazi kwa usahihi wa juu na utulivu kwa muda mrefu, kuboresha kwa kiasi kikubwa anuwai ya maombi. The fiber optic temperature controller has high accuracy and sensitivity, is resistant to high pressure and can be remotely monitored, has a long lifespan, ni ndogo kwa ukubwa, hufanya matengenezo ya chombo kuwa rahisi na rahisi, and ensures safe transportation.

Main functions of optical fiber temperature controllers for rail transit
Provide three winding temperature measurement; Anza kiotomatiki/kimwongozo kitendakazi cha feni cha kukomesha kupoeza; Utendakazi wa fidia dijitali kwa thamani za maonyesho ya kila kituo
LCD liquid crystal display patrols to display the temperature of transformer hotspots; Kutoa kazi ya saa;
Kutoa kazi ya sanduku nyeusi, which can record temperature data and historical maximum temperature before three power outages;
Toa kipengele cha kengele cha kufungua mlango wa baraza la mawaziri la transfoma;
Toa 2 pairs of over temperature alarm contacts (one normally open and one normally closed);
Toa 6 jozi za mawasiliano ya safari ya juu ya halijoto (three normally open and three normally closed);
Toa 2 pairs of iron core alarm contacts (one normally open and one normally closed);
Toa 2 pairs of remote transmission contacts for fans (one normally open and one normally closed);
Toa 2 pairs of temperature controller power-off alarm contacts (one normally open and one normally closed);
Toa 2 pairs of temperature controller fault alarm contacts (one normally open and one normally closed);
Fan fault diagnosis function and provision of fan fault alarm contacts (L function);
One iron core temperature measurement and one iron core over temperature alarm contact (Mimi kazi);
Toa kazi ya mawasiliano ya RS485, communication with time mark can receive timing or MODBUS-RTU protocol (F kazi)
Additional functions of optical fiber temperature measurement system for rail transit
Toa 4 huru 4-20mA kazi za pato za analogi za sasa; (Utendakazi wa E)
Utendakazi wa ulinzi wa kipimo cha halijoto ya PTC usio na mstari unaohisi upinzani; (C kazi)
Alarm function for winding temperature rise rate and iron core temperature rise rate;
The communication protocol can adopt methods such as Profibus, IEC60870-5-103, Mawasiliano ya Ethernet, nk;