摘要
给出一种基于负荷实测的线损理论计算方法,利用配电网各个负荷节点功率、电压数据,精确地求出负荷节点与其上级节点之间线路上的损耗以及上级节点的电压、输出功率,再按照线路损耗的可计算条件,依次回代计算出所有剩余线路的损耗,之后再运用等值电阻法将计算结果进行修正。该方法充分考虑了线路阻抗、实际负荷分布、节点电压等对线损计算精度有影响的因素。通过对某10 kV配电系统进行实例计算,表明了该算法的可行性。
This paper presents a theoretical calculation method for line loss based on measurement-based load.Using the active power,reactive power,and voltage of each load node,their above load node’s voltage and the line loss between load node and its above node can be calculated accurately.Then according to the condition of the line’s loss calculation,all the remained line’s loss can be calculated in turn.Finally,the equivalent resistance method is used to amend the line loss results.The method considers the line impedance,factual load distribution and node voltage which can influence the precision of the line loss calculation.In the end,one 10 kV distribution network’s line loss is calculated,which indicates the method proposed is feasible.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第14期115-118,共4页
Power System Protection and Control
关键词
线损计算
配电网
负荷实测
等值电阻
回代计算
line loss calculation
distribution network
measurement-based load
equivalent resistance
backward calculation
