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

Fiber optic firikwensin zafin jiki, Tsarin sa ido na hankali, Rarraba masana'antar fiber optic a China

Overview of solutions for fluorescent fiber optic temperature controllers for dry-type transformers
The measurement range specified in the “Mai Kula da Zazzabi na Wutar Lantarki don Masu Canjawa” (JB/T7631-2016), which uses Pt100 as the traditional temperature sensor, za a iya iyakance kawai zuwa ƙasa da 1000V, and this sensor is made of metal material, which poses a safety hazard. Saboda haka, 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. Wannan kashi na zafin jiki ba shi da kariya daga tsangwama na lantarki kuma yana da juriya ga babban ƙarfin lantarki (100KV/fiber zuwa nisan gubar ƙasa na 0.4m). 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 fiber optic temperature measurement system for dry-type transformers
For the operating environment of dry-type transformers, Warewa da kariya daga siginonin kutsawa na lantarki na waje ana samun su daga wutar lantarki, ƙarshen shigar da sigina, ƙarshen fitowar sigina, da kwandon sarrafa zafin jiki.
No metallic substances, intrinsic safety.
A mayar da martani ga vibration, kura, moisture, oil and other on-site working environments, multi-layer protective measures are taken to ensure that the fiber optic temperature controller has good electromagnetic compatibility, ensuring stable and reliable operation.
Design principles of fluorescent fiber optic temperature measurement host for dry-type transformers
Ka'idar aiki
Ginin tsarin yana bin ka'idar aiki. A bisa aikace-aikace, ana la'akari da ci gaba da hangen nesa, da misali, samfurori masu ci gaba da balagagge da dandamali na ci gaba an zaɓi su don gina tsarin da ke da amfani kuma yana magance matsalolin aiki.

Ka'idar daidaitawa
Software na tsarin da dandamali na kayan masarufi da kayan aikin haɓaka aikace-aikacen da ake amfani da su wajen gina aikace-aikacen yakamata su bi ka'idodin ƙasa, ma'auni na Ma'aikatar Watsa Labarai, dacewa fasaha bayani dalla-dalla da bukatun na kamfanin.

Ka'idar daidaituwa
Bin manufofin sarrafa bayanai na tsakiya, gaba ɗaya shiryawa, gabaɗaya zane, da aiwatar da mataki-mataki, Tsarin aiwatarwa ya ƙunshi ƙa'idodi guda huɗu: jagoranci guda ɗaya, shiri guda ɗaya, m matsayin, da hadaddiyar kungiya da aiwatarwa.

Ka'idar dogaro
Abubuwan software da kayan aikin suna buƙatar tabbatar da rashin katsewa kuma amintaccen aiki na tsarin auna zafin fiber na gani don 7 × 24 hours. Saboda haka, wajibi ne don ba da cikakkiyar ƙira na matakan aminci don tabbatar da ingantaccen aiki na tsarin da cikakken la'akari da amincin bukatun aikace-aikacen tsarin mahimmanci..

Amintaccen tsarin tsaro
Wannan tsarin yana ɗaukar jerin amintattun matakan ɓoyewa, tare da ginannen ciki 64 bit encryption algorithm. Tsarin yana da tsaro mafi girma kuma yana iya hana kwararar bayanai da sata yadda ya kamata, tabbatar da tsaro, daidaito, da amincin bayanan tsarin, da hana ayyukan ma'aikata ba bisa ka'ida ba da kuma halaltaccen aiki na haramtacciyar aiki.

Ayyukan aiki yana da sauƙi, m, kuma mai hankali sosai
Tsarin yana bincika halaccin bayanan shigarwa ta atomatik kuma yana ba da saƙon abokantaka don kurakuran mai aiki.

Tsayayyen aiki da bayanan dogara.
Dandalin yana da sauƙin aiki, mai sauƙi don Master, kuma tsarin shigarwa yana da sauƙi. Ana iya samar da bayanai ta atomatik zuwa rahotanni daban-daban kamar yadda ake buƙata, inganta gudanarwa yadda ya dace.
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. Saboda haka, it is not affected by electromagnetic interference and can withstand high voltage, making it very suitable for high voltage, strong magnetic field, flammable and explosive temperature measurement occasions.

Introduction to wiring and installation of fiber optic temperature controllers for dry-type transformers
1.1 Tsarin tsari
Tsarin ya ƙunshi sassa uku: mai kula da zafin jiki na fiber optic, mai kyalli fiber optic bincike, da software na sadarwa na fiber optic.

Watsawar bayanai tsakanin tsarin baya da ma'aunin zafin jiki yana ɗaukar hanyar sadarwa ta RS485.

Duk tarin bayanai, gudanarwa, kuma ana kammala nunin zafin jiki ta software na sadarwa, kuma tsarin ya fi fahimtar tattara bayanai da lura da ma'aunin zafin jiki. Tashar ma'aunin zafin jiki na fiber na gani yana haɗa filayen filaye masu kyalli masu yawa, samar da waje RS485 sadarwa, hana tsangwama, da ƙira mai jure lalata.

Application functions of fiber optic temperature controller system for dry-type transformers
1.1 Ainihin saka idanu
Ana iya saita yawan tarin bayanai bisa ga bukatun abokin ciniki, kuma tsarin zai tattara bayanai akai-akai dangane da sigogin da aka saita. Sannan, za a nuna shi a cikin tsarin tebur ko zane mai lanƙwasa don cimma sa ido na ainihi. Sa ido na ainihi game da matsayin aikin kayan aiki; Real lokaci saka idanu da rikodin reactor zafin jiki.

1.2 Basic functions
1) Tambayar bayanan zafin jiki

1. Kuna iya tambayar bayanan zafin rana don takamaiman kwanakin, lilo, buga, da fitarwa zuwa Excel.

2) Ajiye bayanan zafin jiki na tarihi

1. Yi rikodin bayanan zafin jiki na dindindin

Introduction to fiber optic temperature controller for dry-type transformers
2.1 Main features
The fiber optic temperature controller is embedded installation. Wannan samfurin yana da fa'idodin fasaha na musamman a ma'aunin zafin jiki a cikin yanayi na musamman kamar babban ƙarfin lantarki, tsangwama mai ƙarfi na lantarki, da dai sauransu. Wurin zafi da siginar aunawa da ke karɓar ɓangaren firikwensin zafin jiki na fiber optic ba sa amfani da haɗin lantarki, wanda zai iya aiki tare da babban daidaito da kwanciyar hankali na dogon lokaci, sosai inganta aikace-aikace kewayon. Mai kula da zafin jiki na fiber optic yana da daidaitattun daidaito da azanci, yana da juriya ga babban matsi kuma ana iya sa ido a nesa, yana da tsawon rayuwa, karami ne a girmansa, yana sa gyaran kayan aiki mai sauƙi da dacewa, kuma yana tabbatar da sufuri lafiya.

2.2 Main functions
Samar da ma'aunin zafin jiki guda uku; Fara tasha ta atomatik/manual tasha aikin fan; Ayyukan diyya na dijital don nuna ƙimar kowane tashoshi
The digital tube displays the temperature of the transformer’s hot spot on a circuit;
Samar da aikin akwatin baki, wanda zai iya rikodin bayanan zafin jiki da matsakaicin zafin jiki na tarihi kafin katsewar wutar lantarki uku;
Samar da madaidaicin kofa gidan wuta aikin ƙararrawa;
Provide functions such as over temperature alarm, fault alarm, trip, da dai sauransu
Samar da aikin sadarwa na RS485, sadarwa tare da alamar lokaci na iya karɓar lokaci ko tsarin MODBUS-RTU (F aiki)
2.3 Additional features
Bayar 4 masu zaman kansu 4-20mA ayyukan fitarwa na yanzu analog; (E aiki)
PTC juriya mara kan layi aikin ma'aunin zafin jiki; (C aiki)
Aiki na ƙararrawa don jujjuya yanayin hawan zafin jiki da ƙimar hauhawar zafin zafin ƙarfe;
Ka'idar sadarwa na iya ɗaukar hanyoyi kamar Profibus, Saukewa: IEC60870-5-103, Sadarwar Ethernet, da dai sauransu;