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ICS T8846

ICS T8846

主營產品PLC可編程控制器模塊,DCS卡件,ESD系統卡件,振動監測系統卡件,汽輪機控制系統模塊,燃氣發電機備件等,優勢品牌:Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、P...

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ICS T8846

    主營產品

    PLC可編程控制器模塊,DCS卡件,ESD系統卡件,振動監測系統卡件,汽輪機控制系統模塊,燃氣發電機備件等,優勢品牌:Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各種進口工業零部件

    產品廣泛應用于冶金、石油天然氣、玻璃制造業、鋁業、石油化工、煤礦、造紙印刷、紡織印染、機械、電子制造、汽車制造、塑膠機械、電力、水利、水處理/環保、鍋爐供暖、能源、輸配電等等

    ICS T8846自動化控制卡件

    冗余方案為協調每條線路的兩個保護功能和一個或兩個自動重合閘功能的運行而制定了規定端子(見圖3.5.32.4和圖3.5-32.5)。必須使用主/從邏輯來避免任何時間競爭由于定時器公差不同而導致的問題。

    冗余方案采用第一和第二主保護每個方案都有自己的重合閘功能。操作

    因此,重合閘功能必須通過將一個配置為“主”和另一個配置成“跟隨器”來協調。如果主人

    AR首先啟動,它延遲跟隨器AR的操作,直到已經成功地實現了重合閘或其他。

    如果先啟用跟隨器AR,其死區時間開始運行,但如果主機在跟隨器死區時間內啟動,操作

    隨動器的重合閘功能暫停,主接管并執行其重合閘循環。

    跟隨器處于“熱備用”狀態,僅在主AR或其保護功能無法運行時才接管。

    來自故障觸點(如“CO就緒”)的信號發送至主機然而,重合閘將導致“Def”。跳閘后的輸出時間“t超時”,這也會阻止跟隨器AR。

    在圖3.5.32.4的電路中,主電路和從電路起作用也可以通過適當配置

    系統軟件。主/從邏輯

    在1?斷路器中提供主/從邏輯

    每條線路具有兩個線路保護和自動重合閘的方案每個斷路器的功能。

    其中一個重合閘功能由以下人員分配為主功能:

    適當設置參數“主模式”。在成功重合閘之后,其CB(連接如圖3.5.32.6所示

    用于所有類型故障的三相跳閘和重合閘)。主重合閘功能向發送激活的“DELFLR”信號

    跟隨器的“主延遲”I/P將其“閉合CB”命令延遲到跟隨器CB,直到主重合閘功能發出“閉合CB”,之后是等待時間作為一種預防措施,為成功重合閘留出時間。如果重合閘不成功,輸出保持高

    直到信號“Def”。“跳閘”被激活(“延遲Flwr”信號復位,并生成“Blk至Flwr”的信號)。

    如果該信號在跟隨器死區時間結束之前復位,

    對跟隨器CB的關閉命令在這是一個死時間。

    Redundant schemes

    Provision is made for coordinating the operation of two protection functions and one or two auto-reclosure functions per line

    terminal (see Fig. 3.5.32.4 and Fig. 3.5.32.5).

    A master/follower logic has to be used to avoid any time-race

    problems due to differing timer tolerances.

    A redundant scheme assumes first and second main protection

    schemes each with its own reclosure function. The operation of

    the reclosure functions therefore has to be coordinated by configuring one as ‘master’ and the other as ‘follower’. If the master

    AR starts first, it delays the operation of the follower AR until it

    has either achieved successful reclosure or otherwise.

    If the follower AR is enabled first, its dead time starts to run, but

    should the master start during the follow’s dead time, operation

    of the follower reclosure function is suspended and the master

    takes over and performs its reclosure cycle.

    The follower is on “hot standby” and only takes over, if the master AR or its protection function fails to operate.

    The signal from a faulty contact like ‘CO Ready’ to the master

    recloser, however, would result in a ‘Def.Trip’ output after the

    time ‘t Timeout’ and this would also block the Follower AR.

    In the circuit of Fig. 3.5.32.4, the master and follower functions

    can also be the other way round by appropriately configuring the

    system software.Master/follower logic

    Provision is made for a master/follower logic in 1? breaker

    schemes with two line protections per line and an auto-reclosure

    function per circuit-breaker.

    One of the reclosure functions is assigned the role of master by

    appropriately setting the parameter ‘Master mode’. After a successful reclosure, the master AR then enables the follower AR,

    respectively its CB (the connections are as given in Fig. 3.5.32.6

    for a three-phase trip and reclosure for all types of faults).The master reclosure function sends an active ‘DelFlwr’ signal to

    the ‘MasterDelay’ I/P of the follower to delay its ‘Close CB’ command to the follower CB until the master reclosure function issues the ‘Close CB’ command, which is followed by a wait time

    of 300 ms as a precaution to allow time for a successful reclosure. If the reclosure is unsuccessful, the output remains high

    until the signal ‘Def.Trip’ is activated (the ‘DelayFlwr’ signal resets and ‘Blk to Flwr’ signal is generated).

    Should this signal reset before the end of the follower dead time,

    the close command to the follower CB is issued at the end of the

    dead time.

    品牌:ICS

    型號:T8846

    產地:美國

    質保:365天

    成色:全新/二手

    發貨方式:快遞發貨


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