Journal of Modern Power Systems and Clean Energy

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Security-constrained model for integrated power and natural-gas system
Journal of Modern Power Systems and Clean Energy - Tập 5 - Trang 326-336 - 2017
Carlos M. CORREA-POSADA, Pedro SÁNCHEZ-MARTÍN, Sara LUMBRERAS
One of the main factors impacting the reliability of energy systems nowadays is the growing interdependence between electricity and gas networks due to the increase in the installation of gas-fired units. Security-constrained unit commitment (SCUC) models are used to economically schedule generating units without compromising the system reliability. This paper proposes a novel SCUC formulation tha...... hiện toàn bộ
Power hardware in the loop validation of fault ride through of VSC HVDC connected offshore wind power plants
Journal of Modern Power Systems and Clean Energy - Tập 2 - Trang 23-29 - 2014
Ranjan SHARMA, Qiuwei WU, Seung Tae CHA, Kim H. JENSEN, Tonny W. RASMUSSEN, Jacob ØSTEGAARD
This paper presents the power hardware in the loop (PHIL) validation of a feed forward DC voltage control scheme for the fault ride through (FRT) of voltage source converter (VSC) high voltage DC (HVDC) connected offshore wind power plants (WPPs). In the proposed FRT scheme, the WPP collector network AC voltage is actively controlled by considering both the DC voltage error and the AC current from...... hiện toàn bộ
Carrier dynamic overlapping switching frequency optimal pulse width modulation method for modular multilevel converters
Journal of Modern Power Systems and Clean Energy - Tập 6 - Trang 1306-1318 - 2018
Fayun ZHOU, Qianming XU, An LUO, Zhixing HE, Yan LI, Ning XIE, Yichao WANG
Modular multilevel converters (MMCs) operate in the low modulation index region in many applications. However, when utilized at the low modulation index region, large harmonics appear in the output voltage, which degrade the performance of the MMC. To improve the harmonic characteristic in the low modulation index, the carrier dynamic overlapping switching frequency optimal pulse width modulation ...... hiện toàn bộ
Constant frequency operation of parallel resonant converter for constant-current constant-voltage battery charger applications
Journal of Modern Power Systems and Clean Energy - Tập 7 - Trang 186-199 - 2018
Taha Nurettin GÜCIN, Muhammet BIBEROĞLU, Bekir FINCAN
This paper proposes a design and control approach to parallel resonant converter (PRC) based battery chargers. The proposed approach is particularly suitable for the constant-current constant-voltage (CC-CV) charging method, which is the most commonly utilized one. Since the PRC is operated at two different frequencies for each CC and CV charging modes, this approach eliminates the need for compli...... hiện toàn bộ
Impact of phase-locked loop on stability of active damped LCL-filter-based grid-connected inverters with capacitor voltage feedback
Journal of Modern Power Systems and Clean Energy - Tập 5 - Trang 574-583 - 2017
Xiaoqiang GUO, Shichao LIU, Xiaoyu WANG
Active damped LCL-filter-based inverters have been widely used for grid-connected distributed generation (DG) systems. In weak grids, however, the phase-locked loop (PLL) dynamics may detrimentally affect the stability of grid-connected inverters due to interaction between the PLL and the controller. In order to solve the problem, the impact of PLL dynamics on small-signal stability is investigate...... hiện toàn bộ
Online voltage estimation and control for smart distribution networks
Journal of Modern Power Systems and Clean Energy - Tập 4 - Trang 40-46 - 2016
Raghavendra P, D. N. Gaonkar
The increasing deployment of Distributed Generation (DG) technologies introduces power quality challenges to the grid, in particular steady state voltage rise at the connection point for DG units. In most distribution networks, control and monitoring of grid parameters is missing, as well as system security is at risk. Smart grid technologies have the capability to realize the real-time measuremen...... hiện toàn bộ
Long-term forecasting of annual peak load considering effects of demand-side programs
Journal of Modern Power Systems and Clean Energy - Tập 6 - Trang 145-157 - 2017
Nikola Lj. RAJAKOVIC, Vladimir M. SHILJKUT
The main purpose of this research paper is to investigate the long-term effects of the proposed demand-side program, and its impact on annual peak load forecasting important for strategic network planning. The program comprises a particular set of demand-side measures aimed at reducing the annual peak load. The paper also presents the program simulations for the case study of the Electricity Distr...... hiện toàn bộ
Transient characteristics and adaptive fault ride through control strategy of DFIGs considering voltage phase angle jump
Journal of Modern Power Systems and Clean Energy - Tập 5 - Trang 757-766 - 2016
Xinshou TIAN, Yongning CHI, Weisheng WANG, Gengyin LI, Haiyan TANG, Zhen WANG
Wind power in China has experienced fast development in recent years. However, areas rich in wind power resources are often far away from loads centers, which leads to weak connection between wind turbines and power grid. When a grid fault occurs, new transient characteristics in weak grid integrated with doubly-fed induction generators (DFIGs) may present, such as voltage phase angle jump. Curren...... hiện toàn bộ
A novel genetic algorithm based on all spanning trees of undirected graph for distribution network reconfiguration
Journal of Modern Power Systems and Clean Energy - Tập 2 - Trang 143-149 - 2014
Jian ZHANG, Xiaodong YUAN, Yubo YUAN
Network reconfiguration is of theoretical and practical significance to guarantee safe and economical operation of distribution system. In this paper, based on all spanning trees of undirected graph, a novel genetic algorithm for electric distribution network reconfiguration is proposed. Above all, all spanning trees of simplified graph of distribution network are found. Tie branches are obtained ...... hiện toàn bộ
Stochastic optimization of cost-risk for integrated energy system considering wind and solar power correlated
Journal of Modern Power Systems and Clean Energy - Tập 7 - Trang 1472-1483 - 2019
Jiehui ZHENG, Yanni KOU, Mengshi LI, Qinghua WU
Due to the growing penetration of renewable energies (REs) in integrated energy system (IES), it is imperative to assess and reduce the negative impacts caused by the uncertain REs. In this paper, an unscented transformation-based mean-standard (UT-MS) deviation model is proposed for the stochastic optimization of cost-risk for IES operation considering wind and solar power correlated. The unscent...... hiện toàn bộ
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