電力直流系統中絕緣故障的分析研究

摘要：在電力系統當中，直流電源應用的場所是越來越多，不僅有變電站和發電廠，還有通信部門、計算機房、醫院、礦井、賓館以及高層建筑等。其主要作為直流控制保護電源和合閘操作電源使用，負荷種類較多，導致了整個直流系統網絡分布較廣和工作環境比較惡劣的特點，因此較易出現絕緣降低的問題。本文就直流系統的絕緣故障展開分析討論，并提出一些建議。 敘詞：直流電源 直流系統 絕緣 Abstract：The application of DC power supply is more and more in the power system. Not only in transformer substations and power plants, but also in communications, the computer rooms, hospitals, mines, guesthouses and high-rise buildings, etc. The DC power supply, whose loads types are so many, is used as control and protection power supply and used as switchin operational power supply. So the networks distribution is extensive of the total DC system, and whose working condition is poor. As a result, the insulation fault is easier to come out. This text gives a discussion and an analysis on the insulation fault of DC system, and it makes some suggestions. Keyword：DC Power supply, DC System, Insulation