描述
469-P1-HI-A20-E
?很長時間以來，變電站繼電保護交直流串擾問題就一直存在于變電站中，并且直觀地說，我們并沒有一個能夠完美解決它的辦法，大多數(shù)時候在實際操作時，為了避免事故的時常發(fā)生，會安排經(jīng)驗豐富的工作人員去負責這一塊的工作，但是這樣的做法并不能完全使得事故不再發(fā)生，因此也不是可靠的選擇。本文的觀點是將直流電源不可替代的作用發(fā)揮出來，用它替代交流電源來作為繼電保護電源，下面是本文作者想出來的兩種方案。
將驅(qū)動設備進行更換。更換驅(qū)動設備，即將交流的設備更換為直流的，交直流電源串擾問題的主要原因是直流與交流同時存在而引起的，因此如果將交流設備都換成直流的設備，可以很有效的解決串擾問題，但是在另一方面，直流設備在市場上的流量很小，因此購買變得異常困難，并且因為沒有較大的交易量，因此這種專業(yè)上的人員特別少，造成維修的困難與昂貴；還有就是如果直流設備直接接入直流電源直流系統(tǒng)，會使得直流接地的情況發(fā)生的更為頻繁，因此在這方面要多加注意。
將直流電源進行逆變。所謂的逆變，是一種應用逆變器進行處理的方式方法，將二百二十伏的直流電逆變?yōu)槎俣慕涣麟?，然后用于照明燈設備的使用。因為交流線路越長，危險和事故越容易發(fā)生，因此逆變器可以直接裝在直流電源設備的接口處，可以完全杜絕電源串擾問題的發(fā)生。在以上解決方法的說明中，逆變器偶爾也會存在一些問題，畢竟其依舊存在交流側(cè)，因此，可以進行一定的保護，如安裝一些保護設備，有效地避免所有交直流問題的產(chǎn)生。在逆變器技術(shù)的開發(fā)和利用上面，我國的技術(shù)已經(jīng)領先于世界，所以這種方法在一定程度上具有很強的實用性，也因為成本低而符合現(xiàn)階段我國的國情。
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