基于归一负荷矩的配电网台区负荷裕度分析

Normalization load moment based analysis for distribution area's load margin

负荷矩法已用于低压配电网的分析,该文提出负荷矩裕度的概念,分析负荷矩裕度与多节点台区系统负荷裕度之间的内在关系。研究结果表明,配电台区负荷矩裕度越大,整体所含有的负荷裕度将越大;而当负荷矩裕度一定时,越靠近台区首端的杆位可容许新增的负荷越多,反之越少。并通过实际台区案例计算二者量值关系,配网规划人员可据不同接入点所留余的负荷裕度为后续台区负荷接入与改造的容量确定提供理论依据。

Based on the research of normalized load-moment in distribution network,this paper firstly proposed the conception of load moment margin and analyzed the relationship between the load moment＇s margin and the load margin in the multi-substation systems.Research results show that the load moment＇s margin is larger,and the distribution area＇s load margin is greater.When the load moment＇s margin is certain,the pole closer to the transformer allows more additional load,and vice versa.Through the related calculations,distribution network planning staffs can clearly obtain the load margin of different access points,and know the adaptability of voltage quality with load development in an actual case.