Coordination of Distributed Energy Resources to Solve Voltage Problems in Distribution Networks

Martínez-Ramos, José L.; Zarco-Soto, Fco. Javier; Marano-Marcolini, Alejandro; Zarco-Periñán, Pedro J.; Trigo-García, Ángel Luis

doi:10.1109/sest.2018.8495842

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…In contrast to methods that optimize a mathematical function, a centralized heuristic control is proposed in [31] to solve voltage problems. It is based on generic rules that can be tuned to comply with every grid code.…”

Section: Review Of Strategies For Voltage Controlmentioning

confidence: 99%

Centralized Control of Distribution Networks with High Penetration of Renewable Energies

2021

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Distribution networks were conceived to distribute the energy received from transmission and subtransmission to supply passive loads. This approach, however, is not valid anymore due to the presence of distributed generation, which is mainly based on renewable energies, and the increased number of plug-in electric vehicles that are connected at this voltage level for domestic use. In this paper the ongoing transition that distribution networks face is addressed. Whereas distributed renewable energy sources increase nodal voltages, electric vehicles result in demand surges higher than the load predictions considered when planning these networks, leading to congestion in distribution lines and transformers. Additionally, centralized control techniques are analyzed to reduce the impact of distributed generation and electric vehicles and increase their effective integration. A classification of the different methodologies applied to the problems of voltage control and congestion management is presented.

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Section: Review Of Strategies For Voltage Controlmentioning

confidence: 99%

Centralized Control of Distribution Networks with High Penetration of Renewable Energies

2021

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“…Once the sensitivity matrices are obtained, it is possible to calculate control actions to correct a violation of the operational limits [16,32,33]. For example, if a voltage is below the lower limit by an amount Δ , the most efficient control action to correct it can be determined, as well as its amount, e.g.…”

Section: Analysis Of the Errors Associated To The Use Of Sensitivitiesmentioning

confidence: 99%

“…Sensitivity calculation is based on linearizing the power flow equations at the current operating state. Then, by assuming that only one control action is taken at the same time, a set of expressions for every matrix is deduced [16].…”

Section: Analysis Of the Errors Associated To The Use Of Sensitivitiesmentioning

confidence: 99%

“…Among the initiatives proposed to solve voltage problems, linearizing the system model to compute sensitivities stands out for its simplicity and good results. A metaheuristic sensitivity-based algorithm is proposed in [16] that combines rules with numerical algorithms to calculate sensitivities. The developed tool determines the most appropriate actions considering contingencies, network constraints and costs.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Formulation to Compute Sensitivities to Solve Congestions and Voltage Problems in Active Distribution Networks

2021

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Sensitivities are broadly appreciated because of its simplicity and good results in solving voltage problems and congestions in transmission networks. However, since sensitivity calculation is based on a linear approximation of the power flow equations, all decisions commit an intrinsic error that might lead into unexpected results, especially in distribution networks. This paper analyzes the error associated to sensitivities considering a wide range of control variables and proposes a novel formulation to extend the use of sensitivities to manage congestions in active distribution networks. First, a theoretical analysis is performed to study the origin and propagation of errors. Then, numerical results are presented for two types of distribution networks (20 kV and low voltage grids). Finally, a novel formulation is proposed to extend the use of sensitivities to manage congestions, which will allow to reuse previous sensitivity-based methodologies to solve both voltage problems and congestions in active distribution networks.

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“…Similarly, the CIGRE Task Force C6.04.02 [11] presented a comprehensive set of test systems in an attempt to facilitate the analysis and validation of novel techniques and methods, aiming at the DRES integration in an efficient and economic way. All these benchmark networks allow performing a wide spectrum of studies including major areas such as operation and control [12], planning and design [13], power quality [14], stability issues [15] and short-circuit fault analysis [16]. Most of them, however, lack of any information of their protection system being, therefore, impossible to analyze the impact of DRES penetration on this essential grid component.…”

Section: Introductionmentioning

confidence: 99%

A short communication to define the overcurrent protection system of the CIGRE European benchmark distribution networks for RES penetration studies

et al. 2021

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The use of clean energies in distribution networks is an unstoppable trend which has a significant positive impact on the progressive power system decarbonization. However, it has to be considered that conventional distribution systems have been designed to operate as passive networks. Therefore, a massive penetration of distributed generation may create several operational problems, such as malfunction of the protection systems, which may limit the deployment of this technology. The analysis of these limitations by means of representative benchmark networks is of utmost importance. Most of the proposed benchmark networks proposed so far, however, lack of information about their protection system. To overcome this shortcoming, this letter specifies the protection system of the benchmark European distribution networks proposed by the CIGRE Task Force C06.04.02 for this purpose. In this way, this letter facilitates the analysis of the possible impact that renewable energy sources may have in the distribution system protections.

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Coordination of Distributed Energy Resources to Solve Voltage Problems in Distribution Networks

Cited by 3 publications

References 5 publications

Centralized Control of Distribution Networks with High Penetration of Renewable Energies

Centralized Control of Distribution Networks with High Penetration of Renewable Energies

A Novel Formulation to Compute Sensitivities to Solve Congestions and Voltage Problems in Active Distribution Networks

A short communication to define the overcurrent protection system of the CIGRE European benchmark distribution networks for RES penetration studies

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