母線槽作為電力傳輸?shù)年P(guān)鍵設(shè)備,在運(yùn)行過(guò)程中可能會(huì)出現(xiàn)多種問(wèn)題,影響電力系統(tǒng)的穩(wěn)定運(yùn)行。對(duì)于常見(jiàn)問(wèn)題及時(shí)采取應(yīng)對(duì)措施、保障電力供應(yīng)至關(guān)重要。
busway, as a key device for power transmission, may encounter various problems during operation, which affect the stable operation of the power system. It is crucial to take timely countermeasures for common problems to ensure power supply.
母線槽導(dǎo)體多為銅或鋁,易受環(huán)境侵蝕。如在潮濕、有腐蝕性氣體環(huán)境中,金屬與空氣中水分、化學(xué)物質(zhì)反應(yīng),產(chǎn)生銹蝕。這會(huì)使導(dǎo)體電阻增大,導(dǎo)致電能傳輸時(shí)發(fā)熱,降低傳輸效率,長(zhǎng)期還可能引發(fā)短路。
The conductors ofbusway are mostly made of copper or aluminum, which are susceptible to environmental erosion. For example, in humid environments with corrosive gases, metals react with moisture and chemical substances in the air, causing rust. This increases the resistance of the conductor, leading to heat generation during power transmission, reducing transmission efficiency, and may even cause short circuits in the long term.
母線槽運(yùn)行中的振動(dòng)、熱脹冷縮等,會(huì)使導(dǎo)體接頭處螺絲松動(dòng),造成接觸不良。接觸電阻增大,產(chǎn)生局部高溫,甚至出現(xiàn)火花,嚴(yán)重時(shí)影響供電穩(wěn)定性。
Vibrations, thermal expansion and contraction, etc., during the operation ofbusway will loosen the screws at the conductor joints, resulting in poor contact. The increased contact resistance generates local high temperatures or even sparks, seriously affecting the stability of power supply.
母線槽長(zhǎng)時(shí)間運(yùn)行、溫度變化、電氣應(yīng)力等,會(huì)使絕緣材料性能下降。如絕緣層變脆、開(kāi)裂,失去對(duì)導(dǎo)體的有效隔離,增加漏電、短路風(fēng)險(xiǎn)。
Long-term operation, temperature changes, electrical stress, etc., ofbusway will degrade the performance of insulating materials. For instance, the insulating layer becomes brittle and cracked, losing effective isolation from the conductor, which increases the risk of electric leakage and short circuits.
若母線槽處于潮濕環(huán)境,或因密封不良導(dǎo)致水汽進(jìn)入,絕緣性能將大幅降低。水分會(huì)在絕緣層表面形成導(dǎo)電通道,引發(fā)漏電事故。
If thebusway is in a humid environment or water vapor enters due to poor sealing, the insulation performance will be significantly reduced. Moisture will form a conductive path on the surface of the insulating layer, triggering electric leakage accidents.
當(dāng)實(shí)際負(fù)載電流超過(guò)母線槽額定電流,即發(fā)生過(guò)載??赡芤蛟O(shè)備增加、運(yùn)行功率提升,或電力系統(tǒng)設(shè)計(jì)不合理,未充分考慮未來(lái)負(fù)載增長(zhǎng)。過(guò)載時(shí),母線槽發(fā)熱加劇,溫度過(guò)高會(huì)損壞絕緣層、縮短使用壽命,甚至引發(fā)火災(zāi)。
When the actual load current exceeds the rated current of thebusway, overload occurs. This may be caused by the addition of equipment, increased operating power, or unreasonable design of the power system that does not fully consider future load growth. During overload, thebusway heats up more severely. Excessive temperature will damage the insulating layer, shorten the service life, and even cause fires.
母線槽絕緣老化、受潮、機(jī)械損傷等,致使絕緣層破損,不同相導(dǎo)體間或?qū)w與外殼間直接接觸,產(chǎn)生強(qiáng)大短路電流,瞬間釋放大量熱量,損壞設(shè)備。
Aging, moisture, mechanical damage, etc., of thebusway insulation will lead to damage to the insulating layer, causing direct contact between conductors of different phases or between the conductor and the shell, generating a strong short-circuit current that releases a large amount of heat instantaneously and damages the equipment.
母線槽安裝或維護(hù)時(shí)不慎遺留金屬異物,或小動(dòng)物進(jìn)入母線槽,可能造成導(dǎo)體間短路。
Metal foreign objects left accidentally during the installation or maintenance of thebusway, or small animals entering thebusway, may cause short circuits between conductors.
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