满足电压质量条件下分布式光伏电源接入中压配电网的研究

Research on Planning of Distributed Photovoltaic Power Supply Connected to Medium Voltage Distribution Network under the Condition of Satisfying Voltage Quality

分布式光伏电源由于其具有良好的可再生性和清洁性被大量的接入中压配电网,从而也给中压配电网带来了新的挑战。大量的分布式光伏电源无规律的接入配电网将对配电网产生一定的影响,导致配电网运行受限。本文从配电网规划角度出发,对负荷和分布式光伏电源沿10 kV线路分布情况进行研究分析。在满足电压质量条件下对负荷和分布式光伏电源沿10 kV线路接入位置及容量进匹配,形成36种典型组合并进行分析计算,得到不同组合下较实际情况更严格的分布式光伏电源接入的容量区域。以10 kV城镇配电网和乡镇配电网的典型参数为实例对分布式光伏电源接入容量区域进行具体计算,得到该组合不同参数下分布式光伏电源允许接入的容量范围,为后期规划新建分布式光伏电源接入中压配电网提供科学依据。

Due to its good reproducibility and cleanliness,distributed photovoltaic power supplies are connected to the medium-voltage distribution network in large numbers,which also brings new challenges to the medium-voltage distribution network.A large number of distributed photovoltaic power sources irregularly connected to the distribution network will have a certain impact on the distribution network,resulting in restricted operation of the distribution network.From the perspective of distribution network planning,this paper studies and analyzes the distribution of the load and distributed photovoltaic power along the 10 kV line,and matches the location and capacity of the load and distributed photovoltaic power along the 10 kV line when the voltage quality is met,36 typical combinations are analyzed and calculated to obtain the capacity area of the distributed photovoltaic power supply that is more strict than the actual situation under different combinations.Taking the typical parameters of the 10 kV urban distribution network and the township distribution network as an example,the specific calculation of the distributed photovoltaic power access capacity area is carried out,and the allowable access range of the distributed photovoltaic power under different parameters of the combination is obtained.The distributed photovoltaic power supply is connected to the medium voltage distribution network to provide a scientific basis.