Research on Protection for Distributed Generation Access to Distribution Network

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.354-355.1077 ◽

2011 ◽

Vol 354-355 ◽

pp. 1077-1082

Author(s):

Tao Shi ◽

Li Jie Liu ◽

Qiong Tao

Keyword(s):

Distributed Generation ◽

Distribution Network ◽

Distributed Generator ◽

Simulation Results

In this paper, a grid-connected model of inverter interfaced distributed generator is built , which is used for researching the different effects on the traditional current protection comparing with the rotating interfaced distributed generator. Different protection schemes are introduced to deal with the different models, and the inverter interfaced model is built on DigSILENT/PowerFactory, Simulation results have verified the validity of the scheme proposed.

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Application of genetic algorithm for problem of optimizing location and capacity of distributed generation considering distributed network reconfiguration

Science and Technology Development Journal ◽

10.32508/stdj.v20ik7.1205 ◽

2018 ◽

Vol 20 (K7) ◽

pp. 5-14

Author(s):

Linh Tung Nguyen ◽

Thuan Thanh Nguyen ◽

Trieu Ngoc Ton ◽

Anh Viet Truong ◽

Xuan Anh Nguyen

Keyword(s):

Genetic Algorithm ◽

Distributed Generation ◽

Distribution Network ◽

Network Reconfiguration ◽

Distributed Network ◽

Network Configuration ◽

Second Stage ◽

Simulation Results ◽

Two Stages ◽

Radial Network

This paper presents a method of determining the location and size of distributed generation (DG) considering to operate the configuration of distribution network to minimize the real power loss. The proposed method which is based on the genetic algorithm (GA) is divided into two stages. In the first stage, GA is used to optimize the location and size of DG in the mesh distribution network, while in the second stage, GA is used to determine the radial network configuration after installing DG. The simulation results on the 33-nodes and 69-nodes systems show that the proposed method can be an efficient method for the placing DG problem and that is considering to solve the problem of distribution network reconfiguration.

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A Single-Phase Grounding Fault Judgment Method Based on Mutation Current Logic Matrix

MATEC Web of Conferences ◽

10.1051/matecconf/201816001007 ◽

2018 ◽

Vol 160 ◽

pp. 01007

Author(s):

Wu Xiaobin ◽

Xu Shihua ◽

Zhao Hui ◽

Zhang Wei

Keyword(s):

Real Time ◽

Distributed Generation ◽

Power Flow ◽

Single Phase ◽

Distribution Network ◽

Detailed Calculation ◽

Current Threshold ◽

Simulation Results ◽

Capacitance Current ◽

Parent Node

In order to solve the problem of single-phase grounding fault judgment in non-solid-earthed distribution network, the power flow in non-solid-earthed distribution is analyzed. A single-phase grounding fault judgment method based on mutation current logic matrix is proposed. The minimum fault judgment area model is constructed by the parent and child nodes. The feeder mutation current matrix is generated by the feeder real-time current matrix and the feeder history current matrix. The feeder mutation current matrix is transformed into the feeder mutation current logic matrix by the capacitance current threshold, and the non-zero elements of the feeder mutation current logic matrix are extracted into the mutation current logic sequence list. Then the single-phase grounding fault can be determined in the minimum fault judgment area of the last element of the mutation current logic sequence list as the parent node. The detailed calculation formulas are given. This method is also applicable to the non-solid-earthed distribution network containing distributed generation. The simulation results show that the method proposed in this paper has a good adaptability to the permanent grounding fault and it is worth popularizing.

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Educational simulation model for studying the impact of distributed generation on distribution networks using ATP-EMTP software

International Journal of Electrical Engineering Education ◽

10.7227/ijeee.0002 ◽

2014 ◽

Vol 51 (4) ◽

pp. 292-305 ◽

Cited By ~ 2

Author(s):

Saša Stojković ◽

Miroslav Bjekić ◽

ŽArko Janda

Keyword(s):

Simulation Model ◽

Distributed Generation ◽

Distribution Network ◽

Transient State ◽

Software Tool ◽

Distribution Networks ◽

Great Difficulty ◽

Distributed Generator ◽

Complex Phenomena ◽

The Impact

This work presents the use of the modern software tool Alternative Transients Program (ATP) in the teaching of power engineering, within the course Computer Aided Engineering. A simulation model is presented through which it is possible to analyse the effects of distributed generators (DG) on the operation of a distribution network in both a steady and a transient state, with the objective of fulfilling the conditions for connection. This problem was selected not only because it allows students to gain proper insight into the phenomena within a distribution network with a connected distributed generator, but also because it has been shown that the problem of educating engineers is often a constraining factor for implementing distributed generation (DG). It is shown that by using the software tool ATP-EMTP, very complex phenomena in large networks can be studied without great difficulty or the need for analytical methods. The problem-based learning (PBL) method was applied.

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INFLUENCE OF THE DISTRIBUTED GENERATION ON THE POWER QUALITY IN DISTRIBUTION NETWORK

Journal of Natural Sciences and Engineering ◽

10.14706/jonsae2021322 ◽

2021 ◽

Vol 3 (1) ◽

Author(s):

Alma Halilović ◽

Lejla Mujanović ◽

Jasna Hivziefendić ◽

Keyword(s):

Power Quality ◽

Distributed Generation ◽

Distribution Network ◽

Flow Analysis ◽

Test System ◽

Load Flow ◽

Network Modelling ◽

Distributed Generator ◽

Load Flow Analysis ◽

Harmonic Voltage

The aim of this paper is to present and discuss the influence of distributed generation on power quality. Nowadays, interest in power quality has increased since it has become a very important issue in power system delivery. One of the major problems of ensuring a certain level of power quality are harmonics. The aim of this project is to investigate an impact of photovoltaic (PV) on harmonic voltage distortion (HD) in real MV distribution network. Different scenarios will be implemented where solar power plant is going to be modelled with high variability of load and generation to see their effects on the systems power quality (PQ). Those scenarios are when PV is disconnected from the grid and PVs are connected with 2 different powers. Results presented below showed that PV improves power quality of the system, because their inverters are source of harmonics and they increase HD. However, that impact is not very significant and harmonic limits are not violated. A load flow analysis is done for the model of test system 110/35/10kV in which a distributed generator is added, that is on-grid or off-grid. The network modelling and simulation is done in DIgSILENT PowerFactory software.

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