Technical specification for zero sequence current direction protection equipment 零序電流方向保護裝置.技術條件
Zero sequence impedance 零序阻抗
A double lines distance relay based on the zero sequence components is presented 摘要提出了適用于平行雙回線路的零序距離繼電器新判據。
Abstract : zero sequence directional power protection is widely used in neutral directly grounded system 文摘:在大電流接地系統中廣泛采用著零序功率方向保護。
Study of principle of selective leakage protection of zero sequence dc of low - voltage power network underground and its implementation 礦井低壓電網零序直流選擇性漏電保護原理的研究及實現
Having lower and unified positive ( negative ) and zero sequence impedance , which benefits to improve the power supply quality 具有較低而有均勻的正(逆)充和零序阻抗,它有利于改善供電品質。
Subsequently , the transient course and characteristics of zero sequence capacitive current are introduced and analyzed 然后對小電流接地系統單相接地時零序電容電流的暫態過程及特點做了介紹和分析。
When zero sequence or high secondary harmonic current component appear in the circuit , the total current in the shield is zero , no electromagnetic interference with outside 當線路出現零序或高次諧波電流分量時,屏蔽層內電流總和為零,不對外界產生電磁干擾。
The zero sequence current transformer is full enclosed type . the secondary windings and iron core are insulated by epoxy resin . the middle hole is used for cable going through 本型零序電流互感器為全封閉式。二次繞組及鐵芯均澆注在聚脂樹脂內。中間窗孔供三相電纜穿過。
Generally , single phase grounding fault can cause both high phase current and zero sequence current . proper grounding protection set can act reliably and cut off fault 一般地,單相短路將產生很大的故障相電流和零序電流,相應的接地保護裝置將能可靠動作從而將故障切除。