產(chǎn)品內(nèi)容介紹
AS-BDAP-208離散輸出模塊
同步檢查、通電檢查和同步SESRSYN
同步功能允許在包括斷路器閉合時(shí)間在內(nèi)的正確時(shí)刻閉合異步網(wǎng)絡(luò)，從而提高網(wǎng)絡(luò)穩(wěn)定性。同步檢查、通電檢查和同步（SESRSYN）功能檢查斷路器兩側(cè)的電壓是否同步，或至少有一側(cè)不帶電，以確保可以安全閉合。SESRSYN功能包括雙母線和1?斷路器或環(huán)形母線布置的內(nèi)置電壓選擇方案。該功能可檢查手動合閘和自動重合閘，并可進(jìn)行不同的設(shè)置。對于異步運(yùn)行的系統(tǒng)，提供了同步功能。同步功能的主要目的是在連接兩個(gè)異步系統(tǒng)時(shí)提供斷路器的受控閉合。它用于大于同步檢查的滑動頻率和低于同步功能設(shè)定的最大水平的滑動頻率。但是，此功能不能用于自動同步發(fā)電機(jī)與網(wǎng)絡(luò)。設(shè)備控制APC設(shè)備控制功能用于控制和監(jiān)督間隔內(nèi)的斷路器、隔離開關(guān)和接地開關(guān)。在評估其他功能（如聯(lián)鎖、同步檢查、操作員位置選擇和外部或內(nèi)部封鎖）的條件后，授予操作許可。設(shè)備控制特征：?選擇執(zhí)行原則以提供高可靠性?選擇功能以防止同時(shí)操作?選擇和監(jiān)督操作員位置?命令監(jiān)督?操作阻止/解除阻止?位置指示更新阻止/解除鎖定?位置指示替換?聯(lián)鎖功能覆蓋?超控同步檢查?操作計(jì)數(shù)器?抑制中間位置可使用兩種類型的命令模型：?正常安全的直接命令?增強(qiáng)安全的SBO（操作前選擇）
在正常安全狀態(tài)下命令被處理，結(jié)果位置不受監(jiān)控。
然而，隨著安全性的增強(qiáng)，命令得到處理，并對結(jié)果位置進(jìn)行監(jiān)督。正常的安全性意味著只評估命令，而不監(jiān)督結(jié)果位置。增強(qiáng)的安全性意味著，通過對控制對象狀態(tài)值的附加監(jiān)督來評估命令。具有增強(qiáng)安全性的命令安全性始終由CommandTermination服務(wù)原語終止。如有規(guī)定，可在授權(quán)控制下從本地HMI執(zhí)行控制操作。分接開關(guān)位置讀數(shù)TCMYLTC有載分接開關(guān)的位置可以在線監(jiān)測。這可以通過使用BCD編碼的二進(jìn)制輸入信號或通過mA輸入信號來實(shí)現(xiàn)。變壓器或整體差動保護(hù)功能可以使用實(shí)際抽頭位置，以啟用更靈敏的拾取設(shè)置。這反過來將使差動保護(hù)對低電平內(nèi)部故障（如繞組匝間故障）更加敏感。用于功能選擇和LHMI顯示的邏輯旋轉(zhuǎn)開關(guān)SLGGIO用于功能選擇與LHMI顯示（SLGGIO）的邏輯旋轉(zhuǎn)交換機(jī)（或選擇器開關(guān)功能塊）用于獲得與硬件選擇器開關(guān)提供的功能相似的選擇器開關(guān)功能。公用事業(yè)公司廣泛使用硬件選擇器開關(guān)，以便在預(yù)設(shè)值上運(yùn)行不同的功能。然而，硬件交換機(jī)是維護(hù)問題、較低系統(tǒng)可靠性和擴(kuò)展采購組合的根源。邏輯選擇器開關(guān)消除了所有這些問題。
Synchrocheck, energizing check, and synchronizing SESRSYN
The Synchronizing function allows closing of asynchronous networks at the correct moment including the breaker closing time, which improves the network stability. Synchrocheck, energizing check, and synchronizing (SESRSYN) function checks that the voltages on both sides of the circuit breaker are in synchronism, or with at least one side dead to ensure that closing can be done safely. SESRSYN function includes a built-in voltage selection scheme for double bus and 1? breaker or ring busbar arrangements. Manual closing as well as automatic reclosing can be checked by the function and can have different settings. For systems which are running asynchronous a synchronizing function is provided. The main purpose of the synchronizing function is to provide controlled closing of circuit breakers when two asynchronous systems are going to be connected. It is used for slip frequencies that are larger than those for synchrocheck and lower than a set maximum level for the synchronizing function. However this function can not be used to automatically synchronize the generator to the network. Apparatus control APC The apparatus control functions are used for control and supervision of circuit breakers, disconnectors and earthing switches within a bay. Permission to operate is given after evaluation of conditions from other functions such as interlocking, synchrocheck, operator place selection and external or internal blockings. Apparatus control features: ? Select-Execute principle to give high reliability ? Selection function to prevent simultaneous operation ? Selection and supervision of operator place ? Command supervision ? Block/deblock of operation ? Block/deblock of updating of position indications ? Substitution of position indications ? Overriding of interlocking functions ? Overriding of synchrocheck ? Operation counter ? Suppression of Mid position Two types of command models can be used: ? Direct with normal security ? SBO (Select-Before-Operate) with enhanced security
In normal security
the command is processed and the resulting position is not supervised. However with enhanced security, the command is processed and the resulting position is supervised. Normal security means that only the command is evaluated and the resulting position is not supervised. Enhanced security means that the command is evaluated with an additional supervision of the status value of the control object. The command security with enhanced security is always terminated by a CommandTermination service primitive. Control operation can be performed from the local HMI under authority control if so defined. Tap changer position reading TCMYLTC On-load tap-changer position can be monitored on-line. This can be done by either using BCD coded binary input signals or alternatively via an mA input signal. The actual tap-position can be used by the transformer or overall differential protection function in order to enable more sensitive pickup setting. This will in turn make differential protection more sensitive for low level internal faults such as winding turn-toturn faults. Logic rotating switch for function selection and LHMI presentation SLGGIO The logic rotating switch for function selection and LHMI presentation (SLGGIO) (or the selector switch function block) is used to get a selector switch functionality similar to the one provided by a hardware selector switch. Hardware selector switches are used extensively by utilities, in order to have different functions operating on pre-set values. Hardware switches are however sources for maintenance issues, lower system reliability and an extended purchase portfolio. The logic selector switches eliminate all these problems.
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