Design of Low-Resonance Fast Response DC Filter for Enhancing Voltage Quality of DC Distribution Network

2018 ◽  
pp. 274-283 ◽  
Author(s):  
Jianquan Liao ◽  
Yuhao Wen ◽  
Qianggang Wang ◽  
Nianchen Zhou
Keyword(s):  
Distribution Network ◽  
Fast Response ◽  
Dc Distribution ◽  
Voltage Quality

scholarly journals Design of Low-Ripple and Fast-Response DC Filters in DC Distribution Networks

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3128 ◽  
Author(s):  
Jianquan Liao ◽  
Niancheng Zhou ◽  
Qianggang Wang
Keyword(s):  
Transfer Function ◽  
Distribution Network ◽  
Low Frequency ◽  
Distribution Networks ◽  
Optimization Method ◽  
Fast Response ◽  
Resonance Peak ◽  
Dc Distribution ◽  
Filtering Effect ◽  
Peak Value

The design and parameter selection of low-ripple and fast-response direct current (DC) filters are discussed in this study with the aim of alleviating the influence of a DC-side low-frequency voltage pulsation on a sensitive load in a DC distribution network. A method for determining the DC filter parameters by using a mofatching most flat response algorithm is presented. The voltage transfer function of the DC-side filter in the DC distribution network is deduced to analyze its voltage transfer characteristics. The resonance peak value of the filter network is an important factor affecting the transfer speed of a filter. A pole-circle-based parameter optimization method is proposed to move the poles of the filter transfer function down and to the left of pole plane for finding the appropriate capacitance, inductance, and damping parameters. This approach effectively restricts the resonance peak value, accelerates the transfer speed, and maintains steady filtering results. Simulation and test results verify that the filter has low resonance value, rapid convergence ability, and an excellent filtering effect.

scholarly journals Rooftop Solar PV Penetration Impacts on Distribution Network and Further Growth Factors—A Comprehensive Review

Electronics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 55
Author(s):  
Busra Uzum ◽  
Ahmet Onen ◽  
Hany M. Hasanien ◽  
S. M. Muyeen
Keyword(s):  
Solar Energy ◽  
Power Quality ◽  
Distribution System ◽  
Renewable Energy Sources ◽  
Distribution Network ◽  
System Stability ◽  
Solar Pv ◽  
Voltage Quality ◽  
Solution Methods ◽  
Pv Penetration

In order to meet the electricity needs of domestic or commercial buildings, solar energy is more attractive than other renewable energy sources in terms of its simplicity of installation, less dependence on the field and its economy. It is possible to extract solar energy from photovoltaic (PV) including rooftop, ground-mounted, and building integrated PV systems. Interest in rooftop PV system applications has increased in recent years due to simple installation and not occupying an external area. However, the negative effects of increased PV penetration on the distribution system are troublesome. The power loss, reverse power flow (RPF), voltage fluctuations, voltage unbalance, are causing voltage quality problems in the power network. On the other hand, variations in system frequency, power factor, and harmonics are affecting the power quality. The excessive PV penetration also the root cause of voltage stability and has an adverse effect on protection system. The aim of this article is to extensively examines the impacts of rooftop PV on distribution network and evaluate possible solution methods in terms of the voltage quality, power quality, system protection and system stability. Moreover, it is to present a comparison of the advantages/disadvantages of the solution methods discussed, and an examination of the solution methods in which artificial intelligence, deep learning and machine learning based optimization and techniques are discussed with common methods.

scholarly journals Research on power exchange flexibility optimization of urban AC/DC distribution network

2021 ◽  
Vol 1871 (1) ◽  
pp. 012012
Author(s):  
Ke Sun ◽  
Gangjin Ye ◽  
Xuan Yang ◽  
Hua Weng ◽  
Xiran Wang ◽  
...  
Keyword(s):  
Distribution Network ◽  
Dc Distribution ◽  
Power Exchange
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