山西电力
山西電力
산서전력
Shanxi Electric Power
2015年
5期
9-11
,共3页
同塔双回输电线路%不平衡电流%幅值不平衡度%相位不平衡度
同塔雙迴輸電線路%不平衡電流%幅值不平衡度%相位不平衡度
동탑쌍회수전선로%불평형전류%폭치불평형도%상위불평형도
common-tower double-circuit lines%unbalanced current%amplitude unbalanced degree%phase unbalanced degree
长距离同塔双回输电线路的打开以及短距离同塔双回输电线路的不断增加,导致输电线路的电气参数出现不对称,进而出现输电线路三相电流不平衡的问题.为评估三相电流不平衡的程度,目前三相电流不平衡度的计算一般均使用GB/T 14543—2008附录中提供的计算方法,结合实际运行情况,提出一种基于三相电流幅值和相角的电流不平衡度计算方法.
長距離同塔雙迴輸電線路的打開以及短距離同塔雙迴輸電線路的不斷增加,導緻輸電線路的電氣參數齣現不對稱,進而齣現輸電線路三相電流不平衡的問題.為評估三相電流不平衡的程度,目前三相電流不平衡度的計算一般均使用GB/T 14543—2008附錄中提供的計算方法,結閤實際運行情況,提齣一種基于三相電流幅值和相角的電流不平衡度計算方法.
장거리동탑쌍회수전선로적타개이급단거리동탑쌍회수전선로적불단증가,도치수전선로적전기삼수출현불대칭,진이출현수전선로삼상전류불평형적문제.위평고삼상전류불평형적정도,목전삼상전류불평형도적계산일반균사용GB/T 14543—2008부록중제공적계산방법,결합실제운행정황,제출일충기우삼상전류폭치화상각적전류불평형도계산방법.
With long-distance common-tower double-circuit transmission lines being in service and short-distance common-tower double-circuit lines keeping merging,electrical parameters present to be asymmetric,which leads to three-phase current unbalance. The evaluation of the unbalanced degree of three-phase current is usually carried out according to the calculating method proposed in the appendix to GB/T 14543—2008. In this paper,a new calculating method is proposed based on three-phase current amplitude and phase angle.
