描述
線路跳閘是輸電線路中頻繁發(fā)生的故障之一，這種故障一般是由設備自身原因、外部環(huán)境因素或者工作人員人為因素等原因造成的。一旦線路出現(xiàn)跳閘故障就會導致整條輸電線路的癱瘓，而這種故障如不能及時發(fā)現(xiàn)并解決將會對人民的正常生活帶來不便甚至會給企業(yè)造成不同程度經(jīng)濟損失。因此在日常巡線時都要仔細排查，盡量避免跳閘事故的發(fā)生，我們還要對線路運行和易出故障的位置詳細的分析，總結(jié)其發(fā)生的規(guī)律，有依據(jù)地采取適當防護措施，保證線路的安全穩(wěn)定運行。?在鋪設輸電線路時，電力工作人員應該根據(jù)鋪設線路的周邊環(huán)境選擇最經(jīng)濟實用的電纜。例如油紙電纜其起源比較早制作工藝比較完善，結(jié)構(gòu)簡單制作工藝也比較簡單，但它有一個缺陷就是熔點低絕緣油容易受熱流淌，在進行高壓差敷設時，電纜的絕緣油就會從高處流往低處，從而導致高處的絕緣絕緣層干枯降低了其自身的絕緣性能，低處由于油壓的增多會引起鉛包龜裂最終導致故障的發(fā)生。因此鋪設輸電線路時電纜的選擇就顯得尤為重要，現(xiàn)在電力系統(tǒng)一般均使用交聯(lián)聚乙烯絕緣電纜，這樣既可以避免高落差影響下的故障發(fā)生又擴大了電纜的輸送容量。?如果將鋪設電纜線路的周邊環(huán)境中含有酸堿等腐蝕性物質(zhì)或存在地下污水，我們在鋪設前就要考慮可否更換位置鋪設或者采取有效的防污措施。針對這一問題就要求我們的電力設計人員在勘察鋪設線路時一點要仔細調(diào)查并認真詢問當?shù)氐牡刂肺廴厩闆r。?? 一般在電纜鋪設完畢后都會在鋪設地點設置標示牌，以避免其他施工人員因不知道地下鋪設電纜而造成電纜的挖掘損壞或者在此處堆砌重物。隨著時間的推移，有些標示牌會出現(xiàn)標示不清楚的問題，這就要求我們巡線人員及時發(fā)現(xiàn)并處理，以確保線路的安全運行。一個輸電線路能否正常運行完全由電纜工程施工的質(zhì)量決定，如果施工時質(zhì)量達標、運行方式妥當就可以保障電路安全持久穩(wěn)定的運行。我們在日常工作中一定要對電纜的施工和運行人員進行技術(shù)培訓，用以提高他們的技術(shù)水平，最終減少人為造成的故障發(fā)生。?根據(jù)電力電纜運行規(guī)程所述，線路運行時不允許有過負荷電流產(chǎn)生從而過負荷運行，一旦過負荷運行就會導致電纜線溫度升高，這樣電纜線就會老化從而影響其的使用壽命，降低了本身的絕緣性能。線路中一旦有絕緣性能薄弱的地方就有可能發(fā)生擊穿事故。因此我們一定要加強電流的監(jiān)控，避免因過負荷造成的擊穿事故的發(fā)生。
產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
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Siemens Simodrive 650 / 690 Leistungsteil 6SC6502-0AF01
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Stepper motor drive module board ULN2003 F 51/AVR/AVR Z
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4 Axis TB6560 Stepper Motor Drive Board+ Remote Control
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HAYDON SWITCH & INSTRUMENT STEPPER MOTOR DRIVE 40105
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Lam Stepper Motor Drive Board 810-017016-001 working
Nice Compumotor M83-93 Stepper Motor Drive
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AstroSyn Step Stepper Automation Motor Drive 20-0253-01
Linear Actuator 8 inch drive, Precision Stepper Motor
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LOT 3 PowerMax STEPPER MOTOR / LEAD SCREW 5″-4″ DRIVE
Warner Electric Stepper Motor Drive
Digiplan stepper motor drive type PKC20240V 240 VAC
10 pcs, L297 Stepper Motor Control Drive IC Genuine ST
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Mycom UPS-502-0 Stepper Motor Drive IMS-500-020-(S/?A)-L
BOXER CROSS NEAT MOTOR ASSY STEPPER DRIVE 23-00004 MDM7
Stepper motor drive board (UL2003) test board
2 Sanyo StepSyn 103H7833-03XB43 Stepper Motor Drive
Parker SX106-178 Nema 42 Stepper Motor 23 34 Drive SX6
Applied Motion PDO 3540 Stepper Motor Drive
Applied Motion PD2035 Stepper Motor Drive
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Parker SX8 Drive Microstep Compumotor
MELEC D-5400 Stepper Motor Drive =
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Parker Digiplan PDS Series Microstep Drive PDS13/USA
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MAGNON STEPPER MOTOR CONTROLLER BOARD DRIVE 10600
Parker Compumotor M57-83 Servo Stepper Drive & Motor
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