What is the safest temperature measurement method for dry-type transformer windings-INNO

Overview of solutions for fluorescent fiber optic temperature controllers for dry-type transformers
The measurement range specified in the “Electronic Temperature Controller for Transformers” (JB/T7631-2016), which uses Pt100 as the traditional temperature sensor, can only be limited to below 1000V, and this sensor is made of metal material, which poses a safety hazard. Naizvozvo, temperature sensor probes and leads for measuring transformer winding temperature have higher requirements.

The fiber optic temperature controller uses our company’s independently developed fluorescent fiber optic temperature sensor as the temperature sensing element. Iyi tembiricha inonzwa chinhu haina kudzivirirwa kune electromagnetic kukanganiswa uye inoshingirira kune yakakwira voltage (100KV/fiber kusvika pasi inotungamira kureba kwe0.4m). Fluorescent fiber optic temperature measurement completely solves potential safety hazards from the source of temperature measurement and improves the safety level of transformers.

Target of Fluorescent Filber Optic Tembiricha Kuyera System for dry-type transformers
For the operating environment of dry-type transformers, kuparadzaniswa uye kudzivirira kubva kunze kwemagetsi kupindira zviratidzo zvinowanikwa kubva kune magetsi, kuguma kwekuisa chiratidzo, chiratidzo chinobuda kupera, uye tembiricha yekudzora bhokisi shell.
No metallic substances, intrinsic safety.
Mukupindura kuvibration, huruva, moisture, oil and other on-site working environments, multi-layer protective measures are taken to ensure that the fiber optic tembiricha inodzora has good electromagnetic compatibility, ensuring stable and reliable operation.
Design principles of fluorescent fiber optic temperature measurement host for dry-type transformers
Nheyo yekushandisa
Kuvakwa kwehurongwa kunonamatira kune musimboti wekuita. Pahwaro hwekuita, kufambira mberi uye kufanoona zvinotariswa, uye mwero, zvigadzirwa zvepamberi uye zvakakura uye mapuratifomu ekusimudzira anosarudzwa kuvaka sisitimu inoshanda uye inogadzirisa matambudziko anoshanda.

Standardization musimboti
Iyo system software uye hardware mapuratifomu uye maturusi ekuvandudza mashandisirwo anoshandiswa mukuvaka kwekushandisa anofanirwa kuenderana nemitemo yenyika, zviyero zveMinistry of Information Industry, yakakodzera tekinoroji yakatarwa uye zvinodiwa nekambani.

Nheyo yekufanana
Kutevedzera mutemo wepakati pekutonga ruzivo, kuronga kwese, dhizaini yose, uye nhanho-ne-nhanho kuita, hurongwa hwekuita hunosanganisira nheyo ina dzakabatana: hutungamiri hwakabatana, kuronga kwakabatana, mipimo yakabatana, uye sangano rakabatana uye kushandiswa.

Kuvimbika musimboti
The software and hardware resources need to ensure the uninterrupted and reliable operation of the Fiber Optic Tembiricha Kuyera System for 7 × 24 maawa. Naizvozvo, zvinodikanwa kushongedza dhizaini yakakwana yematanho ekuvimbika kuti ive nechokwadi chekushanda kwakavimbika kwehurongwa uye kunyatsofunga nezve kuvimbika zvinodiwa zvekiyi system application..

Yakavimbika kuchengetedza nzira
Iyi sisitimu inotora akatevedzana akachengeteka encryption matanho, ine yakavakirwa-mukati 64 bit encryption algorithm. Iyo sisitimu ine kuchengetedzwa kwepamusoro uye inogona kudzivirira zvinobudirira kudonha kwedata uye kuba, kuve nechokwadi chekuchengetedzwa, kururama, uye kutendeseka kweiyo data data, uye kudzivirira mashandiro evatyairi zvisiri pamutemo uye mashandiro emushandisi ari pamutemo.

Iyo yekushandisa interface iri nyore, ushamwari, uye vakangwara zvikuru
Iyo sisitimu inotarisa otomatiki huchokwadi hweiyo data yekuisa uye inopa hushamwari kukurumidza kune zvikanganiso zvemushandisi.

Kushanda kwakagadzikana uye data yakavimbika.
Chikuva chiri nyore kushanda, nyore kugona, uye nzira yekuisa iri nyore. Data inogona kugadzirwa otomatiki mune akasiyana mishumo sezvinodiwa, kuvandudza kugona kwehutungamiriri.
Principle of Fluorescent Fiber Optic Temperature Measurement
The fiber optic probe consists of three parts: ST connector, fiber optic cable, and end temperature sensing end. The ST connector is the connection part with the photoelectric module; Fiber optic cable is the transmission part, with quartz fiber inside. The quartz fiber has a coating and cladding on the outside, and a Teflon protective sleeve on the outermost part; The end temperature sensing end contains temperature sensitive rare earth materials, which excite fluorescence after being irradiated by fixed wavelength light. After the excitation stops, the relationship between the decay time constant of fluorescence afterglow and temperature is a quasi exponential function. The temperature can be obtained by measuring the time constant of afterglow; The optical fiber is resistant to high temperatures of 200 ℃ and has an outer diameter of 3mm. Long term bending radius of 13.2cm. Short term bending radius 4.4cm

The sensor probe material is rare earth fluorescent material, and its biggest advantage compared to other optical fiber temperature measurement principles is that temperature measurement is independent of light intensity. It has strong compatibility with the inconsistency of fluorescence intensity, optical path attenuation, and circuit drift in hardware. Naizvozvo, it is not affected by electromagnetic interference and can withstand high voltage, making it very suitable for high voltage, Yakasimba yemagineti munda, flammable and explosive temperature measurement occasions.

Introduction to wiring and installation of fiber optic temperature controllers for dry-type transformers
1.1 Structural framework
Iyo system ine zvikamu zvitatu: fluorescent fiber optic tembiricha controller, fluorescent fiber optic probe, uye fiber optic yekukurukurirana software.

Iyo data yekufambisa pakati peiyo backend system uye tembiricha yekuyera terminal inotora RS485 nzira yekutaurirana.

Yese data kuunganidzwa, management, uye tembiricha kuratidza inopedzwa nekukurukurirana software, uye iyo sisitimu inonyanya kuona kuunganidzwa kwedata uye kutarisisa kuyerwa kwekushisa. Iyo fiber optic tembiricha yekuyera terminal inosanganisa akawanda-channel fluorescent optical fibers, kupa ekunze RS485 kutaurirana, anti-kupindira, uye dhizaini isingadziviriri.

Application functions of fiber optic temperature controller system for dry-type transformers
1.1 Real time monitoring
Iyo data yekuunganidza density inogona kuiswa zvinoenderana nezvinodiwa nevatengi, uye iyo sisitimu ichaunganidza data nguva nenguva zvichibva pane yakatarwa paramita. Zvadaro, icharatidzwa mune tafura fomu kana curve kudhirowa kuwana chaiyo-nguva yekutarisa. Nguva chaiyo yekutarisa mamiriro ekushandisa kwemidziyo; Nguva chaiyo yekutarisa uye kurekodha kweiyo reactor tembiricha.

1.2 Basic functions
1) Tembiricha data mubvunzo

1. Unogona kubvunza tembiricha data yemazuva akatarwa, browse, dhinda, uye kutumira kune Excel.

2) Historical tembiricha data kuchengetedza

1. Rekodha zvachose tembiricha data

Introduction to fiber optic temperature controller for dry-type transformers
2.1 Main features
The fiber optic temperature controller is embedded installation. Ichi chigadzirwa chine yakasarudzika tekinoroji yekuyera kuyerwa kwekushisa munzvimbo dzakakosha senge yakakwira voltage, kupindira kwakasimba kwemagetsi, etc. The temperature hotspot and measurement signal receiving part of the fluorescent fiber optic tembiricha sensor do not use electrical connections, iyo inogona kushanda nehupamhi hwepamusoro uye kugadzikana kwenguva yakareba, inonatsiridza zvakanyanya huwandu hwayo hwekushandisa. Iyo fiber optic tembiricha controller ine yakanyanya kurongeka uye kunzwa, inoshingirira kune yakakwira uye inogona kutariswa kure, ane hupenyu hurefu, idiki muhukuru, inoita kuchengetedza chiridzwa nyore uye nyore, uye inova nechokwadi chekufambisa kwakachengeteka.

2.2 Main functions
Ipa hutatu hwekupeta tembiricha kuyerwa; Otomatiki/manual tanga kumisa kutonhora feni basa; Digital compensation function yekuratidzira kukosha kwechiteshi chimwe nechimwe
The digital tube displays the temperature of the transformer’s hot spot on a circuit;
Ipa bhokisi dema basa, iyo inogona kunyora tembiricha data uye nhoroondo yakanyanya tembiricha isati yadzima katatu magetsi;
Ipa transformer gonhi kabati poindi yekuvhura alarm basa;
Provide functions such as over temperature alarm, fault alarm, trip, etc
Ipa RS485 kutaurirana basa, kutaurirana nechiratidzo chenguva kunogona kugamuchira nguva kana MODBUS-RTU protocol (F basa)
2.3 Additional features
Provide 4 yakazvimiririra 4-20mA analog ikozvino inobuda mabasa; (E function)
PTC nonlinear kuramba inonzwa tembiricha kuyerwa kudzivirira basa; (C basa)
Alarm basa rekupemha tembiricha yekukwira kweyero uye iron core tembiricha yekukwira rate;
Iyo yekutaurirana protocol inogona kutora nzira dzakadai seProfibus, IEC60870-5-103, Ethernet kutaurirana, etc;