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基于PSCAD/EMTDC的分布式光伏并网电压影响分析

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为了降低分布式光伏并网带来的不利影响,从电压分布和电压波动两个方面进行理论,并在PSCAD/EMTDC设置PV单点接入和多点接入等不同场景进行仿真分析,结果表明,同一节点PV接入容量越大,接入位置距离线路末端越近,电压幅值提升越明显,对于18 节点单辐射线路配电网,线路末端节点PV接入容量不应超过0.81MW.
Analysis of the Influence of Distributed Photovoltaic Grid Connection Voltage Based on PSCAD/EMTDC
In order to reduce the adverse effects of distributed photovoltaic grid connection,theoretical analysis is conducted from two aspects:voltage distribution and voltage fluctuation.Simulation analysis is conducted in different scenarios such as setting PV single point access and multi-point access in PSCAD/EMTDC.The results show that the larger the PV access capacity of the same node,the closer the connection position is to the end of the line,and the more significant the increase in voltage amplitude.For an 18 node single radiation line distribution network,The PV access capacity of the terminal nodes of the line should not exceed 0.81MW.

distributed photovoltaicgrid connectiondistribution networkvoltage distributionvoltage fluctuation

张宁、魏焕政、张铭棠

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广州供电局有限责任公司,广东 广州 510000

分布式光伏 并网 配电网 电压分布 电压波动

2024

电气开关
沈阳电气传动研究所

电气开关

影响因子:0.281
ISSN:1004-289X
年,卷(期):2024.62(5)