Cooperation and storage tradeoffs in power-grids under DC power flow constraints and inefficient storage

2015 ◽  
Author(s):  
Subhash Lakshminarayana ◽  
Wei Wei ◽  
H. Vincent Poor ◽  
Tony Q.S. Queky
Keyword(s):  
Power Flow ◽  
Power Grids ◽  
Dc Power ◽  
And Storage ◽  
Flow Constraints

Research on AC-DC Power Flow to Solve the Instability of Micro-Grid

2014 ◽  
Vol 672-674 ◽  
pp. 1314-1317
Author(s):  
Xing Xu ◽  
Hui Ting Chen ◽  
Lei Feng
Keyword(s):  
Power Flow ◽  
Main Idea ◽  
Power Grids ◽  
Large Power ◽  
Dc Power ◽  
Ac Power ◽  
Micro Grids ◽  
And Storage ◽  
Stable Current ◽  
Stable Voltage

Nowadays the disadvantages of large power grids are becoming more and more conspicous. Scholars have come to realize the importance of micro-grids. As the supplement of large power grids, the instability of micro-grids has gathered a huge amount of attention. This paper proposes a solution of the instability problem of micro-grids based on the research on AC-DC power flow. The main idea is to add AC power flow and storage power, which features stable voltage, stable current and stable output, in the micro-grids, thus solving voltage and current fluctuation and other instability problems in micro-grids.

A Novel Power Flow Algorithm for Hybrid AC/DC Power Grids

2017 ◽  
Vol 45 (14) ◽  
pp. 1607-1616 ◽  
Author(s):  
Xinyi Zhang ◽  
Xueshan Han ◽  
Ming Yang ◽  
Donglei Sun ◽  
Yumin Zhang ◽  
...  
Keyword(s):  
Power Flow ◽  
Power Grids ◽  
Dc Power ◽  
Flow Algorithm

scholarly journals Modeling of an Energy Hybrid System Integrating Several Storage Technologies: The DBS Technique in a Nanogrid Application

2021 ◽  
Vol 13 (3) ◽  
pp. 1170
Author(s):  
Roberto Ciavarella ◽  
Giorgio Graditi ◽  
Maria Valenti ◽  
Anna Pinnarelli ◽  
Giuseppe Barone ◽  
...  
Keyword(s):  
Power Flow ◽  
Storage Systems ◽  
Power Grids ◽  
Test Cases ◽  
Control Logic ◽  
Voltage Level ◽  
Dc Bus ◽  
Bus Voltage ◽  
Storage Technologies ◽  
And Storage

Hybrid Systems in microgrid applications have gained relevance in power flow management in the context of the worldwide power grids transformation. Successfully integrating several technologies of micro resources and storage systems is a key component of microgrid applications. To address this issue, dc-bus signaling (DBS) is proposed here and used as a distributed decentralized control strategy in which the control nodes, as the generation sources/storage interface converters, induce DC bus voltage-level changes to communicate with the other control nodes. The DC bus voltage thresholds are identified and assigned to each converter to trigger the point at which it begins discharging or charging for six different DC Nano Grid (DCNG) configurations, thereby integrating both conventional and unconventional storage systems. Several test cases have been analyzed to verify the effectiveness of the proposed control logic.

scholarly journals Analyzing Cascading Failures in Power Grids under the AC and DC Power Flow Models

2018 ◽  
Vol 45 (3) ◽  
pp. 198-203 ◽  
Author(s):  
Hale Cetinay ◽  
Saleh Soltan ◽  
Fernando A. Kuipers ◽  
Gil Zussman ◽  
Piet Van Mieghem
Keyword(s):  
Power Flow ◽  
Power Grids ◽  
Cascading Failures ◽  
Flow Models ◽  
Dc Power

scholarly journals Comparing the Effects of Failures in Power Grids Under the AC and DC Power Flow Models

2018 ◽  
Vol 5 (4) ◽  
pp. 301-312 ◽  
Author(s):  
Hale Cetinay ◽  
Saleh Soltan ◽  
Fernando A. Kuipers ◽  
Gil Zussman ◽  
Piet Van Mieghem
Keyword(s):  
Power Flow ◽  
Power Grids ◽  
Flow Models ◽  
Dc Power

Linear power flow formulation for low-voltage DC power grids

2018 ◽  
Vol 163 ◽  
pp. 375-381 ◽  
Author(s):  
Oscar Danilo Montoya ◽  
L.F. Grisales-Noreña ◽  
D. González-Montoya ◽  
C.A. Ramos-Paja ◽  
Alejandro Garces
Keyword(s):  
Power Flow ◽  
Low Voltage ◽  
Power Grids ◽  
Dc Power

scholarly journals A Full-Newton AC-DC Power Flow Methodology for HVDC Multi-Terminal Systems and Generic DC Network Representation

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1658
Author(s):  
Leandro Almeida Vasconcelos ◽  
João Alberto Passos Filho ◽  
André Luis Marques Marcato ◽  
Giovani Santiago Junqueira
Keyword(s):  
Power Systems ◽  
Direct Current ◽  
Power Flow ◽  
Large Scale ◽  
Flow Problem ◽  
Control Strategies ◽  
Problem Formulation ◽  
Expansion Planning ◽  
Dc Power ◽  
Power Flow Problem

The use of Direct Current (DC) transmission links in power systems is increasing continuously. Thus, it is important to develop new techniques to model the inclusion of these devices in network analysis, in order to allow studies of the operation and expansion planning of large-scale electric power systems. In this context, the main objective of this paper is to present a new methodology for a simultaneous AC-DC power flow for a multi-terminal High Voltage Direct Current (HVDC) system with a generic representation of the DC network. The proposed methodology is based on a full Newton formulation for solving the AC-DC power flow problem. Equations representing the converters and steady-state control strategies are included in a power flow problem formulation, resulting in an expanded Jacobian matrix of the Newton method. Some results are presented based on HVDC test systems to confirm the effectiveness of the proposed approach.

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