主动配电网中分布式电源最大接入容量分析

Study on the Maximum Penetration of Active Distribution Network

主动配电网的一个显著特征就是大量分布式电源的接入。在新形势下高效利用分布式电源,需要加强对分布式电源接入对主动配电网的影响的研究。本文首先利用稳态恒功率的负荷模型及分布式电源模型,推导离散型负荷的稳态电压分布,进而推广到一般性连续解析形式的稳态电压分布。通过对稳态电压分布的特点和要求,分析在不造成电压越限情况下分布式电源的最大可接入容量,同时还分析了线路调压器对于分布式电源接入后电压分布的影响。

One of the significant features of the active distribution network is the access to a large number of distributed generations. In the new situation, the efficient use of distributed generations needs to study the distributed generations’ impact on active distribution network. In this paper, the steady-state voltage distribution of the discrete load is deduced to the steady-state voltage distri-bution in the general continuous analytical form by using the steady-state constant power load model and the distributed generation model. By analyzing the characteristics and requirements of the steady-state voltage distribution, the maximum penetration of the distributed generations under the condition of no voltage limit is analyzed. The influence of the line regulator on the voltage distribution after the distributed generations is also analyzed.