Research on the improving effect of energy utilization efficiency in a solar photovoltaic generation multiple linkage power distribution system by a phase-to-phase power flow controller

2020 ◽  
Vol 46 (0) ◽  
pp. 111-111
Author(s):  
Kenjiro Shimizu ◽  
Hideto Yonemori ◽  
Hiromasa Takeno
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Solar Photovoltaic ◽  
Photovoltaic Generation ◽  
Power Distribution System ◽  
Flow Controller ◽  
Power Flow Controller

scholarly journals Line-End Voltage and Voltage Profile along Power Distribution Line with Large-Power Photovoltaic Generation System

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Toshiro Matsumura ◽  
Masumi Tsukamoto ◽  
Akihiro Tsusaka ◽  
Kazuto Yukita ◽  
Yasuyuki Goto ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Reverse Current ◽  
Generation System ◽  
Pv System ◽  
Photovoltaic Generation ◽  
Voltage Rise ◽  
Power Distribution System ◽  
Line Current ◽  
Distribution Line

In recent years, the introduction of the photovoltaic generation system (PV system) has been increasing by promoting the use of renewable energy. It has been feared that the reverse current from the PV system may cause an unacceptable level of voltage rise at the interconnection node in the power distribution system. This paper discusses the effects of the reverse current on the voltage rise and fall characteristics of the interconnection node and the voltage profiles along the power distribution line. When the line current on the circuit is small, the voltage on the line monotonically increases from the sending end to the receiving end. When a relatively large current flows, it causes a voltage reduction near the distribution substation. Furthermore, on the basis of the voltage aspects in the power distribution system with a large PV system, the allowable limits of the line current and the output power from PV system are investigated.

scholarly journals DISTRIBUTED GENERATION IMPACT ON DISTRIBUTION NETWORKS: A REVIEW

2014 ◽  
pp. 190-194
Author(s):  
GOPIYA NAIK. S ◽  
D. K. KHATOD ◽  
M. P. SHARMA
Keyword(s):  
Distributed Generation ◽  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Networks ◽  
Loss Reduction ◽  
Power Distribution System ◽  
Power Loss Reduction ◽  
Planning Methods ◽  
Voltage Support

The concept of traditional distribution networks with unidirectional power flow is weakening due to large penetration of Distributed Generation (DG). The penetration of DG may impact the operation of a distribution network in both beneficial and detrimental ways. Some of the positive impacts of DG are voltage support, power loss reduction, support of ancillary services and improved reliability, whereas negative ones include protection coordination, dynamic stability and islanding. Therefore, proper planning methods that evaluate the composite impacts, i.e. technical, economical and environmental impacts of DG integration to existing distribution networks are very much essential. This paper presents a critical review of various impacts of DG on power distribution system. For ease of reference and to facilitate better understanding this literature is categorized and discussed under five major headings.

scholarly journals A comparative study on common power flow techniques in the power distribution system of the Tehran metro

2018 ◽  
Vol 12 (4) ◽  
pp. 244-250 ◽  
Author(s):  
Mohammad Ghiasi
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Flow Analysis ◽  
Electrical Energy ◽  
Power Grids ◽  
Power Distribution System ◽  
Detailed Assessment ◽  
Flow Techniques

Overall, a power-flow study is a steady-state assessment whose goal is to specify the currents, voltages, and real and reactive flows in a power system under a given load conditions. This paper presents a comparison of common power flow techniques in the Tehran metro power distribution system at the presence of non-linear loads. Moreover, a modelling, simulation and analysis of this power distribution system is implemented with the Electrical Transient Analyser Program (ETAP) software. In this assessment, common power flow techniques including the Newton-Raphson (NR), Fast Decoupled (FD), and Accelerated Gauss-Seidel (AGS) techniques are provided and compared. The obtained results (total generation, loading, demand, system losses, and critical report of the power flow) are analysed. In this paper, we focus on the detailed assessment and monitoring by using the most modern ETAP software, which performs numerical calculations of a large integrated power system with fabulous speed and also generates output reports. The capability and effectiveness of the power flow analysis are demonstrated according to the simulation results obtained with ETAP by applying it to the power distribution system of the Tehran metro. In developing countries such as Iran, off-line modelling and simulation of power grids by a powerful software are beneficial and helpful for the best usage of the electrical energy.

scholarly journals An Identification of Multiple Harmonic Sources in a Distribution System by Using Spectrogram

2018 ◽  
Vol 7 (2) ◽  
pp. 244-256
Author(s):  
M. H. Jopri ◽  
A. R. Abdullah ◽  
M. Manap ◽  
T. Sutikno ◽  
M. R. Ab Ghani
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Flow Direction ◽  
Correct Identification ◽  
Power Distribution System ◽  
Time Frequency ◽  
Frequency Representation ◽  
Identification Technique ◽  
Cost Efficient

The identification of multiple harmonic sources (MHS) is vital to identify the root causes and the mitigation technique for a harmonic disturbance. This paper introduces an identification technique of MHS in a power distribution system by using a time-frequency distribution (TFD) analysis known as a spectrogram. The spectrogram has advantages in term of its accuracy, a less complex algorithm, and use of low memory size compared to previous methods such as probabilistic and harmonic power flow direction. The identification of MHS is based on the significant relationship of spectral impedances, which are the fundamental impedance (Z1) and harmonic impedance (Zh) that estimate the time-frequency representation (TFR). To verify the performance of the proposed method, an IEEE test feeder with several different harmonic producing loads is simulated. It is shown that the suggested method is excellent with 100% correct identification of MHS. The method is accurate, fast and cost-efficient in the identification of MHS in power distribution arrangement.

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