The impact of single-phase grid-connected distributed photovoltaic systems on the distribution network using P-Q and P-V models

被引:25
作者
Emmanuel, Michael [1 ]
Rayudu, Ramesh [1 ]
机构
[1] Victoria Univ Wellington, Sch Engn & Comp Sci, Smart Power & Renewable Energy Syst Grp, Wellington 6140, New Zealand
关键词
Photovoltaic; Grid-connected; Voltage unbalance; Equipment loading; GENERATION; INTEGRATION; PLACEMENT; ALGORITHM; PLANT;
D O I
10.1016/j.ijepes.2017.03.001
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The gradual emergence of photovoltaic (PV) systems as the most common distributed generation interconnected with the electric power system calls for a detailed power flow analysis with different models especially in the evolving unbalanced active distribution network. This paper is an extension of a previous study carried out on the performance evaluation of a 10 kWp grid-connected AV system deployed in a school, with the grid providing a virtual storage and access to upstream markets. For increased adoption of such systems in the unbalanced distribution network, it is pivotal to understand the mode of operation and the type of connection to the system. This article presents an impact analysis of such utility interactive single-phase PV systems distributed on all the single-phase load nodes of the traditional IEEE-13 bus distribution test feeder. The PV distributed generation (PV-DG) can be modelled as constant P-Q or P-V nodes with varied impacts in power flow studies for the unbalanced active distribution network. Results from these models are compared in terms of their impacts on voltage profiles at load buses, voltage unbalance, equipment loading, power losses and the total number of iterations for a converged power flow solution. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:20 / 33
页数:14
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