Influence of Distributed Generation on Voltage Quality of Distribution Network and Limit Access Capacity

Xuhang ZHANG; Mengyao ZHANG; Ruanming HUANG; Lingguang ZHAO; Jingjing ZHAO

doi:10.16513/j.cnki.10-1427/tk.2017.05.003

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Distributed Energy ›› 2017, Vol. 2 ›› Issue (5) : 19-23. DOI: 10.16513/j.cnki.10-1427/tk.2017.05.003

Basic Research

Influence of Distributed Generation on Voltage Quality of Distribution Network and Limit Access Capacity

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Abstract

The distributed generation （DG） access has changed the traditional power supply mode of the distribution network, and has a great impact on the voltage quality, relay protection, short-circuit capacity and power flow direction of the distribution network. In order to study the influence of DG access on distribution network and the maximum acceptable capacity of DG under the constraint of distribution network in various operating conditions, taking a typical 10 kV network as an example, this paper analyzes the effects of DG access on the voltage quality of distribution network；then, taking distributed limit access capacity as optimization objective, with considering the voltage deviation, voltage fluctuation, short-circuit current line, carrying capacity of line, power flow equations constraints and distributed output constraints, adopts particle swarm optimization algorithm to solve this optimization problem to obtain the maximum access capacity when the distribution network is connected to DG in multi node at the same time. The simulation and optimization results show that the proposed model and algorithm are effective.

Key words

distributed generation（DG） / limit access capacity / voltage quality / particle swarm optimization algorithm

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Xuhang ZHANG , Mengyao ZHANG , Ruanming HUANG , et al . Influence of Distributed Generation on Voltage Quality of Distribution Network and Limit Access Capacity[J]. Distributed Energy Resources. 2017, 2(5): 19-23 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.05.003

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