A Study on Impacts of Distributed Generation Voltage in Distribution Network System

With the development of Smart Grid, the permeability of distributed generation (DG) is increased gradually. When a fault happens in systems branch, DG plays a significant role in ensuring a continuous supply to the load points as many as possible. This paper uses ant colony algorithm to achieve distribution network fault reconstruction with distributed generation, in order to guarantee the load points to restore power as many as possible, and the network system having the minimum loss at the same time. The optimization process is divided into two parts: first, In case of DG power supply capacity known, we optimize the capacity of the Island formed on DG, in order to determine the nodes of the island. Then, we optimize the isolated system and the main distribution system separately, in order to find the system radiation structure of minimum network loss. Finally, the IEEE 33 nodes distribution network is used as an example to testify the effectiveness of ant colony algorithm.

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Analysis of the impact of distributed generation injection to stability of 20 kV distribution network system

Journal of Physics Conference Series ◽

10.1088/1742-6596/1402/3/033086 ◽

2019 ◽

Vol 1402 ◽

pp. 033086

Author(s):

T Sucita ◽

Y Mulyadi

Keyword(s):

Distributed Generation ◽

Distribution Network ◽

Network System ◽

The Impact

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Research on Relay Protection of Distribution Network System with Distributed Generation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.734.670 ◽

2015 ◽

Vol 734 ◽

pp. 670-674

Author(s):

Hui Hai Liu ◽

Xiao Li Zhang ◽

Wei Li ◽

Xiao Yang Wang ◽

Yi Fan Zhang

Keyword(s):

Distributed Generation ◽

Distribution Network ◽

Relay Protection ◽

Network System ◽

Fault Current ◽

Current Development ◽

Fault Line ◽

Sensitivity And Selectivity ◽

Automatic Reclosing

Introduce the current development of distributed generation, the structure and protection configuration of existing distribution network, and the fault current insert of different kinds of distributed generation was introduced. Through the distribution network in different positions to join distributed generation, the influence of the join of distributed generation on the existing protection of distribution network was analyzed, which included the serious interference to the sensitivity and selectivity of the original protection, the refusal of line protection, the action error of non- fault line protection. The influence of distributed generation on automatic reclosing, and the effect between fuses was discussed, to some extent, and base on the discussion some appropriate countermeasures are proposed.

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