摘要
由于种种原因,农村低压配电网三相负荷不平衡程度较为严重,在进行理论线损计算时通常根据具体情况将其在代表日归为一种不平衡类型,据此在三相平衡负荷线损计算中引入一个系数来得到不平衡时的结果.然而,根据我们了解,农网一个台区负荷的不平衡类型往往是变化的,即很难在一个代表日将其归为同一类型.为此,我们根据实际情况,提出了一种基于分时间段考虑负荷不平衡的理论线损计算新方法,即在一个代表日内将负荷分为多个不平衡类型,再引入相应的计入不平衡负荷的系数.最后以实例与其它方法进行了比较,得到了一些有益的结论.
The three-phase load unbalance degree of rural low voltage distribution network is very serious due to various reasons. In theoretical line loss calculation a specific types of the unbalanced loads in a representative day is usually given according to the specific situation and a coefficient is introduced into the theoretical line loss calculation. However, the type of unbalanced loads is not a constant in a representative day, it changes with time. So, in the paper, we proposed a new calculation method of theoretical line loss for rural low-voltage distribution networks in which the influence of the unbalanced three-phase loads on the loss is considered by time segment. It is compared with a traditional computer method and some meaningful conclusions are presented in it.
出处
《湖南理工学院学报（自然科学版）》
CAS
2015年第1期45-49,共5页
Journal of Hunan Institute of Science and Technology(Natural Sciences)
关键词
农网
不平衡负荷
理论线损计算
时间分段
rural low-voltage distribution networks
unbalanced three-phase loads
calculation of theoretical line loss
time segment
