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確保正確的經(jīng)濟和功能運行的重要性
將安裝作為一個整體，并將引起的任何問題降至低
異常操作條件和/或故障。
本分析討論了不同設(shè)備之間的協(xié)調(diào)
致力于保護區(qū)域和特定組件，以期：
•始終保證人員和安裝的安全；
•識別并快速排除受問題影響的區(qū)域
不分青紅皂白地采取行動，從而減少可用于
網(wǎng)絡(luò)的其余部分；
•包含故障對網(wǎng)絡(luò)其他完整部分的影響
（電壓驟降，旋轉(zhuǎn)機器失去穩(wěn)定性）；
•減少受影響區(qū)域內(nèi)組件的應(yīng)力和損壞；
•確保具有饋電電壓的服務(wù)的連續(xù)性；
•確保在發(fā)生任何故障時提供足夠的備份
負責打開電路的保護裝置；
•為員工和管理系統(tǒng)提供他們需要的信息
盡快恢復(fù)服務(wù)，并盡量減少對
網(wǎng)絡(luò)的其余部分；
•實現(xiàn)可靠性、簡單性和成本之間的有效折衷
有效性
更準確地說，有效的保護系統(tǒng)必須能夠：
•了解發(fā)生了什么以及發(fā)生在哪里，并加以區(qū)別
在異常但可容忍的情況和給定范圍內(nèi)的故障之間
影響區(qū)，避免不必要的跳閘和
不合理地斷開系統(tǒng)的健全部分；
•盡快采取行動控制損壞（破壞、加速
老化，…），保護電源的連續(xù)性和穩(wěn)定性。
合適的解決方案來自這兩者之間的折衷
對立需要準確識別故障并迅速采取行動，這是明確的
在功能上，這兩個要求中的哪一個優(yōu)先。
importance both to ensure the correct economic and functional operation of the installation as a whole and to reduce to a minimum any problem caused by anomalous operating conditions and/or malfunctions. The present analysis discusses the coordination between the different devices dedicated to the protection of zones and specific components with a view to: • guaranteeing safety for people and installation at all times; • identifying and rapidly excluding only the zone affected by a problem, instead of taking indiscriminate actions and thus reducing the energy available to the rest of the network; • containing the effects of a malfunction on other intact parts of the network (voltage dips, loss of stability in the rotating machines); • reducing the stress on components and damage in the affected zone; • ensuring the continuity of the service with a good quality feeding voltage; • guaranteeing an adequate back-up in the event of any malfunction of the protective device responsible for opening the circuit; • providing staff and management systems with the information they need to restore the service as rapidly as possible and with a minimal disturbance to the rest of the network; • achieving a valid compromise between reliability, simplicity and cost effectiveness. To be more precise, a valid protection system must be able to: • understand what has happened and where it has happened, discriminating between situations that are anomalous but tolerable and faults within a given zone of influence, avoiding unnecessary tripping and the consequent unjustified disconnection of a sound part of the system; • take action as rapidly as possible to contain damage (destruction, accelerated ageing, ...), safeguarding the continuity and stability of the power supply. The most suitable solution derives from a compromise between these two opposing needs-to identify precisely the fault and to act rapidly - and is defined in function of which of these two requirements takes priority.
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