Medium and low voltage control strategies for a smart distribution grid

2016 ◽  
Author(s):  
Kamil Korotkiewicz ◽  
Philippe Steinbusch ◽  
Marcel Ludwig ◽  
Felix Dorsemagen ◽  
Marcus Stotzel ◽  
...  
Keyword(s):  
Low Voltage ◽  
Control Strategies ◽  
Voltage Control ◽  
Distribution Grid ◽  
Smart Distribution Grid

A Trust Region SQP Method for Coordinated Voltage Control in Smart Distribution Grid

2016 ◽  
Vol 7 (1) ◽  
pp. 381-391 ◽  
Author(s):  
Wanxing Sheng ◽  
Ke-yan Liu ◽  
Sheng Cheng ◽  
Xiaoli Meng ◽  
Wei Dai
Keyword(s):  
Trust Region ◽  
Voltage Control ◽  
Distribution Grid ◽  
Sqp Method ◽  
Smart Distribution Grid

scholarly journals Control Strategies of Full-Voltage to Half-Voltage Operation for LCC and Hybrid LCC/MMC based UHVDC Systems

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 742 ◽  
Author(s):  
Gen Li ◽  
Wei Liu ◽  
Tibin Joseph ◽  
Jun Liang ◽  
Ting An ◽  
...  
Keyword(s):  
High Voltage ◽  
Low Voltage ◽  
Control Strategies ◽  
Control Process ◽  
Voltage Control ◽  
Load Shedding ◽  
Long Distance ◽  
High Voltage Direct Current ◽  
Bulk Power ◽  
The Time Domain

With the increasing demand of transmitting bulk-power over long-distance, the ultra high-voltage direct-current (UHVDC) transmission systems become an attractive option. Nowadays, not only the line commutated converter (LCC) based systems, but also the modular multilevel converter (MMC) based systems have reached UHVDC levels. The converter stations of UHVDC systems normally utilize two series-connected valve-groups to reduce the difficulties of device manufacturing and transportation. This high-voltage and low-voltage valve-group configuration allows the UHVDC systems to achieve a full-voltage to half-voltage operation which increases the flexibility of the systems. However, the existing research only focuses on the full-voltage to half-voltage control of LCC-UHVDC systems. The control strategies for hybrid LCC/MMC UHVDC systems are underresearched. Moreover, the approaches to reduce the load-shedding caused by the full-voltage to half-voltage control for both LCC and hybrid LCC/MMC based UHVDC systems have not been investigated. In this paper, full-voltage to half-voltage control strategies for both LCC and hybrid LCC/MMC based UHVDC systems have been proposed. Moreover, to avoid load-shedding caused by the half-voltage operation, a power rescheduling method that re-sets the power references of the half-voltage operating and full-voltage operating poles has been proposed. The proposed full-voltage to half-voltage control strategies and power rescheduling method can achieve a stable and fast control process with a minimum power loss. The proposed methods have been verified through the time-domain simulations conducted in PSCAD/EMTDC.

Techno-economic assessment of voltage control strategies in low voltage grids

2015 ◽  
Author(s):  
Thomas Stetz ◽  
Konrad Diwold ◽  
Markus Kraiczy ◽  
Dominik Geipel ◽  
Martin Braun ◽  
...  
Keyword(s):  
Low Voltage ◽  
Control Strategies ◽  
Voltage Control ◽  
Economic Assessment

scholarly journals A review: Smart Distribution Grid Management using Agents

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Control Strategies ◽  
Fault Management ◽  
Management Control ◽  
Centralized Control ◽  
Distribution Grid ◽  
Reliability Modeling ◽  
Modeling And Analysis ◽  
Reliability Indices ◽  
Smart Distribution Grid ◽  
Grid Management

This paper focuses on the main features of the smart distribution grid (grid management using agents). The fault management is consisting of three stages including faulted section identification, faulted section isolation, and restoration. The probable control strategies utilized in the smart grid are either centralized, decentralized, or autonomous control. Multi-Agent System (MAS) based model uses both centralized and decentralized strategies. The fault management process is usually carried out based on MAS. A literature survey on fault management control schemes is investigated. Furthermore, the reliability is estimated for both centralized, decentralized, autonomous, and modified centralized control strategies. This paper presents reliability modeling and analysis of all considered control strategies. In this paper, comprehensive detailed reliability models of considered control strategies are developed. Using this equivalent reliability model, various reliability indices are calculated.

scholarly journals Stability Assessment of Voltage Control Strategies for Smart Transformer-Fed Distribution Grid

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 185146-185157
Author(s):  
Zhi-Xiang Zou ◽  
Marco Liserre ◽  
Zheng Wang ◽  
Ming Cheng
Keyword(s):  
Control Strategies ◽  
Voltage Control ◽  
Stability Assessment ◽  
Distribution Grid

Loss Minimization and Voltage Control in Smart Distribution Grid

2014 ◽  
Vol 47 (3) ◽  
pp. 4030-4037 ◽  
Author(s):  
Morten Juelsgaard ◽  
Christoffer Sloth ◽  
Rafael Wisniewski ◽  
Jayakrishnan Pillai
Keyword(s):  
Voltage Control ◽  
Distribution Grid ◽  
Loss Minimization ◽  
Smart Distribution Grid

scholarly journals A REVIEW OF VOLTAGE CONTROL STRATEGIES FOR LOW-VOLTAGE NETWORKS WITH HIGH PENETRATION OF DISTRIBUTED GENERATION

2020 ◽  
Vol 10 (3) ◽  
pp. 60-65
Author(s):  
Klara Janiga
Keyword(s):  
Control Method ◽  
Low Voltage ◽  
Control Strategies ◽  
Voltage Control ◽  
Distribution Networks ◽  
High Penetration ◽  
Starting Point ◽  
New Energy ◽  
Local Methods ◽  
Network Operation

Deterioration of voltage conditions is one of the frequent consequences of connecting an increasing number of photovoltaic sources to the low-voltage (LV) power grid. Under adverse conditions, i.e. low energy consumption and high insolation, microgeneration can cause voltage surges that violate acceptable limits. Research shows that the increase in voltage is the main limitation for connecting new energy microsources to the LV network and forces the reconstruction of the network. An alternative to costly modernizations can be the implementation of appropriate strategies for controlling network operation to maintain the voltage at the required level. The article presents an overview of the methods and concepts of voltage control in a low-voltage network developed so far to mitigate the undesirable phenomenon of voltage boosting. The focus was mainly on local methods—not requiring communication infrastructure—as best suited to the conditions of Polish distribution networks. Gathering the results of many tests and simulations carried out in different conditions and on different models allowed for the formulation of general conclusions and can be a starting point for further research on a control method that can be widely used in the national power system.

scholarly journals Distributed voltage control mechanism in low-voltage distribution grid field test

2013 ◽  
Author(s):  
S. Iacovella ◽  
K. Lemkens ◽  
F. Geth ◽  
P. Vingerhoets ◽  
G. Deconinck ◽  
...  
Keyword(s):  
Field Test ◽  
Control Mechanism ◽  
Low Voltage ◽  
Voltage Control ◽  
Voltage Distribution ◽  
Distribution Grid
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