房地产导刊
房地產導刊
방지산도간
Real Estate Biweekly
2014年
10期
403-404
,共2页
三相短路%元件%电抗%短路电流%短路容量
三相短路%元件%電抗%短路電流%短路容量
삼상단로%원건%전항%단로전류%단로용량
short circuit%element%reactance%short circuit current%short circuit capacitance
选择电气设备、整定继电保护、确定电气主接线方案、考虑限制短路电流的措施及分析电力系统是短路计算的最终目的。所谓短路是指不同电位导电部分之间的不正常短接,既有相与相之间导体的金属性短接或者经小阻抗的短接,也有中性点直接接地系统或三相四线制系统中单相或多相接地(或接中性线)。
選擇電氣設備、整定繼電保護、確定電氣主接線方案、攷慮限製短路電流的措施及分析電力繫統是短路計算的最終目的。所謂短路是指不同電位導電部分之間的不正常短接,既有相與相之間導體的金屬性短接或者經小阻抗的短接,也有中性點直接接地繫統或三相四線製繫統中單相或多相接地(或接中性線)。
선택전기설비、정정계전보호、학정전기주접선방안、고필한제단로전류적조시급분석전력계통시단로계산적최종목적。소위단로시지불동전위도전부분지간적불정상단접,기유상여상지간도체적금속성단접혹자경소조항적단접,야유중성점직접접지계통혹삼상사선제계통중단상혹다상접지(혹접중성선)。
The final purpose of short circuit calculation is to select electric equipment,set relay protection,determine the main electrical connection solution, consider the measures to limit the short circuit current and analyze electric system.What short circuit is that the current-carrying part of the different electric potentials are connected abnormally,which is not only the metal short circuit connection of conductors between phase and phase or short circuit connection through small reactance,but also single-phase or multiphase ground(or connectting to neutral line)in neutral-point solid ground system or three-phase four-line system.