zero sequence current造句
例句与造句
- Technical specification for zero sequence current direction protection equipment
零序电流方向保护装置.技术条件 - 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
本型零序电流互感器为全封闭式。二次绕组及铁芯均浇注在聚脂树脂内。中间窗孔供三相电缆穿过。 - 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，单相短路将产生很大的故障相电流和零序电流，相应的接地保护装置将能可靠动作从而将故障切除。 - The results indicate that asvg not only can compensate reactive currents , but also can effectively filter the harmonic currents , negative sequence currents and zero sequence currents
仿真结果证明基于空间矢量调制的asvg既能够补偿不平衡系统的无功功率，同时又能够有效地滤除系统中的谐波、负序和零序等有害电流。 - Further , the methods are proposed to compare and summarize for choosing fault line and detecting distance in neutral ungrounded system . subsequently , the characteristics of zero sequence current and transient courses are introduced and analyzed
接着对小电流接地系统单相接地故障时零序电流的暂态过程及特点做了介绍和分析。 - It's difficult to find zero sequence current in a sentence. 用zero sequence current造句挺难的
- This paper brings forward that asvg is capable of compensating harmonic , negative sequence and zero sequence currents . so asvg can synchronously compensate the reactive current and harmful currents in three - phase four - wire unbalanced system
本文提出静止无功发生器还具有抑制谐波和滤除负序、零序电流的能力，从而可以用于对三相四线制不平衡系统同时进行无功补偿和有害电流滤除。 - Yueqing zhengda soft magnetic alloy co . , ltd is a high - tech company that mainly produces ultra - crystallite ( nanometer cryst - allite ) material , ultra - crystallite magnetic core , current transformer , zero sequence current transformer , toroidal transformer
乐清市正大软磁合金有限公司，是一家专业生产超微晶（纳米晶）带材，超微晶磁芯，电流互感器，零序互感器，环型电感的高科技、软磁公司。 - From the perspective of minimum transmission losses , an instantaneous reactive power theory for systems with any number of phases and with or without neutral line is developed . under the new definition , each quantity has its own physical meaning , and the zero sequence current can be decomposed into active and reactive components . furthermore , a generalized compensation method for zero sequence current is developed
从输电损耗最小的角度出发，提出了任意相无中性线或有中性线系统的瞬时无功功率理论，在新的理论下，每个量都有清晰的物理意义，且能分解出零序电流的有功分量和无功分量，并给出了通用的零序电流补偿方法，揭示了瞬时无功功率理论与传统平均意义下的无功功率理论的联系及本质区别，从而为研究hvdc - vsc及各种facts装置的无功功率控制奠定了理论基础。 - By study , we can know that when one - phase ground fault happens on the line , more far the fault location is from where relays place , more less is the difference of the two zero sequence currents , while hen one - phase ground fault happens on the other line , more far the fault location is from where relays place , more is the difference of the two zero sequence currents
研究表明，当本回线路发生单相接地短路时，在通过公式计算得出的一特定值为正时，离保护安装处越远，本回线路零序电流与非故障线路零序电流相位差值越小；当另一回线发生单相接地短路时，离保护安装处越远，本回线路零序电流与故障线路零序电流相位差值越大，该值为负时则反之。 - There is no literature that discusses using upfc to compensate zero sequence and negative sequence currents and conventional upfc is three - phase three - wire , which cannot deal with zero sequence current , so we must improve the conventional upfc in order to add a function of zero sequence and negative sequence currents compensation
传统的upfc为三相三线制结构，不能处理零序电流，因此必须对传统的upfc进行改进，使其既能保持原有的功能，又能增加滤序功能。我们称这种改进后的upfc为新型upfc 。 - According to the present actual underground power system which neutral point is grounded through arc suppression coil in many supper big shaft , the development history and present situation of synthetic protection system used in hv flameproof switchgear are reviewed , and on the basis of analyzing the problems existed in high voltage flameproof switchgear , the selective leakage protective method based on the detecting harmonic direction of zero sequence current as well as the value of zero sequence voltage is proposed in this paper , and at the same time , harmonics extracting schematic and transforming circuit are also designed
本文深入系统地研究了基于intel80c196kb单片机控制的6kv防爆开关综合保护系统，主要内容如下：针对大型及特大型矿井供电系统中性点普遍采用消弧线圈接地方式的现状，回顾了国内外矿用高压防爆开关保护系统的发展历史，分析了目前国内高压馈电开关保护系统所存在的问题，提出了“基于零序电压基波启动，五次谐波功率方向比较”的选择性漏电保护原理，设计了相应的五次谐波提取电路和功率方向鉴别电路。 - It includes four criterions of locating fault point ? “ transient zero sequence current amplitude law ” , “ stable base wave zero sequence current phase law ” , “ stable seventh harmonic zero sequence current phase law ” and “ s injection law ” . pointing out how the law locate the fault point to minimal fault section by applying these criterions gradually . the law will not only make up the blemishes existing in current methods for single - phase fault location in small current grounding system , but also locate the fault point to minimal fault isolating unit on fault line
该方法通过将所包含的四个定位判据- “暂态零序电流幅值法” 、 “稳态基波零序电流方向法” 、 “稳态7次谐波零序电流方向法”和“ s信号注入法” -进行有选择地递进使用,不仅有效弥补了目前已有小电流接地系统单相接地故障选线的缺陷,更将故障定位在故障线路最小故障区段。