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Turbin Mai Yawan Karamin Gwamnati: Risuka, Sababin, da Masu Samun Dukkana

Turbin mai yawan karamin gwamnati suna cikin muhimman abubuwa a cikin tattalin arziki wanda ke tabbatar da inganci da kuma ke muhimmanci a gaba-gaban al'amuran karamin gwamnati. Tashar su na iya aiko, aiko ta biyu, da kuma itace, wadannan sun yi amfani da siffar electromagnetic induction don canza voltaji mai karfi. Tun daga lokacin da suka faru, masu samun tattalin arziki sun ci gaba da hankali akan inganci da kusa da kalmomin bayanai. Amma, akwai wasu batun da suke zama na musamman. Wasu wurare da suke da kula da sabon dukkana masu karfi, wanda ke jin da suke haifi da karamin gwamnati. Don in ba da damar kan bayanan abin da kuma mafi girman abin, ya kamata a duba waƙoƙi masu samun karamin gwamnati da kuma a yi hankali akan teknologi da za su iya taimakawa wajen shirya abin da ke rarrabe.

1. Batun da Ake Iya Haifi Da Su Turbin Mai Yawan Karamin Gwamnati

• Haifinta Karamin Gwamnati: Idan ana haifi da karamin gwamnati a turbin, ana samu karamin gwamnati mai yawa. Ba kuma aiki da tsawon da ya fi shi, idan an kirkiro tattalin arziki ta turbin, wannan batun zai iya haifi, kuma zai iya haifi da karamin gwamnati na gida da kuma kudin da ke dogara.

• Haifinta Karmomi Electromagnetic: A lokacin da karamin gwamnati, overcurrent yana samu karmomi electromagnetic mai yawa wanda ke jin da suke haifi da kudin. A cikin yanayi, aiko ta turbin zai iya haifi da kudin, kamar deyin da ke haifi da aiko, kudin da ke dogara, da kuma abubuwan da suke haifi da su. A cikin yanayi, wannan zai iya haifi da matsalolin karamin gwamnati kamar da abubuwan da ke haifi da su.

2. Sababobin Karamin Gwamnati a Turbin Mai Yawan Karamin Gwamnati

(1) Programmin da ake amfani da su don kalkulashe karamin gwamnati suna nuna aikinsu a cikin modelloccin ideal, wanda ke nufin cewa magnetic field leakage ta ke haɗa, tsawon aiko suna da tsari, da kuma karmomi suke haɗa. Amma, a cikin al'umma, magnetic field leakage a turbin baa haɗa, kuma ana haɗa a cikin section da ke dogara, inda wires electromagnetic ke haifi da karmomi mechanical mai yawa. A cikin points of transposition of continuously transposed cables (CTC), slope climbing ke badala direction of force transmission, wanda ke nuna torque. Saboda elastic modulus factor of spacer blocks, uneven axial distribution of spacer blocks ke haifi da alternating forces produced by alternating leakage magnetic fields to experience delayed resonance. Wannan shine sababi mai yawa da winding discs at the iron core yoke section, transposition points, and corresponding positions with tap changers deform first.

(2) Amfani da conductors da suke haifi da kudin mechanical, kuma suke haifi da deformation, strand separation, and exposed copper when subjected to short-circuit mechanical forces. Idan a amfani da conductors da suke haifi da kudin, large currents and steep transposition climbs at these positions generate significant torque. Additionally, winding discs at both ends of windings experience considerable torque due to the combined effects of radial and axial leakage magnetic fields, leading to twisting deformation. 

Misali, phase A common winding of the 500kV Yanggao transformer had 71 transpositions, and due to using relatively thick conventional transposed conductors, 66 of these transpositions showed varying degrees of deformation. Similarly, the WuJing No. 11 main transformer also exhibited different degrees of wire flipping and exposure at the high-voltage winding ends in the iron core yoke section due to using conventional transposed conductors.

(3) Short-circuit resistance calculations fail to consider the impact of temperature on the bending and tensile strength of electromagnetic wires. Short-circuit resistance designed at room temperature cannot reflect actual operating conditions. According to test results, the temperature of electromagnetic wires significantly affects their yield limit (σ0.2). As the temperature of electromagnetic wires increases, their bending strength, tensile strength, and elongation all decrease. At 250°C, bending and tensile strength are considerably lower than at 50°C, while elongation decreases by more than 40%. In actual operation, transformers reach an average winding temperature of 105°C at rated load, with hot spot temperatures reaching 118°C. Most transformers undergo automatic reclosing processes during operation.

Therefore, if a short-circuit point doesn't immediately disappear, the transformer will experience a second short-circuit impact within a very short time (0.8 seconds). However, after the first short-circuit current impact, the winding temperature rises sharply. According to GB1094 standards, the maximum allowable temperature is 250°C, at which point the winding's short-circuit resistance has significantly decreased. This explains why most transformer short-circuit accidents occur after reclosing operations.

(4) Loose winding construction, improper transposition processing, and excessive thinness cause electromagnetic wires to become suspended. From the perspective of damage locations in accidents, deformation is most commonly found at transposition points, especially at transposition locations of transposed conductors.

(5) The use of soft conductors is one of the main reasons for poor short-circuit resistance in transformers. Due to insufficient early understanding of this issue or difficulties with winding equipment and processes, manufacturers were reluctant to use semi-rigid conductors or had no such requirements in their designs. Transformers that have failed all used soft conductors.

(6) Excessive assembly gaps result in insufficient support on electromagnetic wires, creating hidden dangers for transformer short-circuit resistance.

(7) Uneven pre-tightening forces applied to various windings or tap positions cause winding discs to jump during short-circuit impacts, resulting in excessive bending stress on electromagnetic wires and subsequent deformation.

(8) Babu da na 'yan zuba da kare-kare ko kasa-kasa ba tana haifar da hankali ga gudanar da tsari. Karkashin zuba da suka yi da kwaikwayo ta kasa suna cikin kwaikwayon ba suka haifar da yake.

(9) Amfani da inganci a kan zuba da kasa-kasa ba daidai ita ce wadanda ke nuna kasa-kasa a cikin kasa-kasa masu tsari.

(10) Yawan abubuwan da suka faruwa wa kusa da tsari a kan gwamnati suna haifar da rawa mai kyau bayan yawan abubuwan da suka faruwa wa kusa da tsari, wanda ya haifar da kasa-kasa masu tsari ko kusan karfi daga cikin gwamnati, amma ya haifar da kasa-kasa masu tsari.

3.Addimamin Da Zai Taimaka Wajen Inganta Gudanar Da Tsari a Turbin Masu Iya

(1) Yi Abin Nema Ta Hanyar Kusa Da Tsari Don Samun Bayanai

 Gaskiya da za su iya samun turbin masu yawan mutum idan ana yi aiki tana da shugaban mutum da kuma cin koyar da ake yi a matsayin aiki, sannan kuma abin-abina da ake yi a cikin aiki don tabbatar da yanayin abubuwan da suka faruwa. Idan muna son sanin kayan gudanar da tsari na turbin, muna iya yi abin da take da tsari don tabbatar da cewa an samu wurare da ake bukata don gudanar da tsari, wanda yake da amincewa da cutar da ake bukata da turbin.

(2) Sauraro Cikakken Kirkiro Da Kuma Taimaka Wajen Kayan Tsari a Kan Yanayin Zuba

A lokacin da ake sauraro turbin, mafi girman birnin da suke yi ake yi suna da shugaban mutum da kuma cin koyar da ake yi a matsayin aiki, amma kuma suna da shugaban mutum da kuma cin koyar da ake yi a matsayin aiki don samun kayan gudanar da tsari. A kan yanayin aiki, saboda wasu turbin sun yi amfani da kirkiro da kasa-kasa masu tsari masu biyu, wannan cikakken tana da shugaban mutum da kuma cin koyar da ake yi a matsayin aiki. Kirkiro suna da shugaban mutum da kuma cin koyar da ake yi a matsayin aiki, sannan bayan ake yi yanayin zuba, muna iya yi kayan tsari da kuma rarrabe takwas da zuba.

Bayan ake yi waɗannan yanayin aiki, zuba-zuba a kan karamin kirkiro muna iya sauraro su zuwa adadin sama da dama. A lokacin da ake yi aiki da damar, muna iya amfani da abubuwa masu kayan tsari don kara zuba-zuba zuwa adadin sama da dama da ake bukata. A lokacin da ake yi aiki da damar, muna iya taimaka wajen kayan tsari na zuba-zuba masu biyu, musamman kasa-kasa masu tsari masu biyu.