配电网10kV线路接入配电变压器容量限额研究

为解决现有配电网10kV线路接入配电变压器容量控制限额不精准、不合理,未能结合当地实际情况进行差异化制定的问题,梳理了某市近6年配电变压器负荷运行数据,分析影响线路负载能力的因素;建立了10kV线路接入配电变压器容量计算公式,计算出典型配电变压器负荷需用系数平均值和不同负荷性质下配电变压器的同时率,制定出不同负荷发展阶段、不同负荷性质、不同10kV线路目标接线模式和供电能力下的10kV线路接入配电变压器容量控制限额。

Research on Capacity Quota of 10 kV Transmission Line Connected to Distribution Transformer in Distribution Network

In order to solve the problem of inaccurate and unreasonable capacity control quota of 10 kV line access distribution in the existing distribution network, which can not be differentiated according to the local actual situation, this paper combs the load operation data of distribution in a city in recent 6 years, analyzes the factors affecting the line load capacity, establishes the calculation formula of 10 kV line access distribution capacity, and calculates the average demand coefficient of typical distribution load. At the same time,the paper formulates the capacity control limit of 10 kV line access distribution transformer under different load development stages, different load properties, different 10 kV line target connection modes and power supply capacity.