Analysis on Voltage Profile of Distribution Network with Distributed Generation

Shao, Hua; Shi, Yujie; Yuan, Jianpu; J, An; Yang, Jianhua

doi:10.1088/1755-1315/113/1/012170

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…The backward/forward sweep power flow calculation method [28] is a common method for calculating the voltage level of each node, transformer load level, branch current, and other operation indices in the distribution network, and it has great advantages in solving the power flow of radial distribution networks. When the EV charging loads of different scales are connected to the distribution network, the operation state of the distribution network is bound to change, such as drop in the node voltage level, heavy load operation of the transformer, and line overheating.…”

Section: Solving Processmentioning

confidence: 99%

Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition

Yang¹,

Cao²,

Tan³

et al. 2023

Energy Engineering

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At present, the large-scale access to electric vehicles (EVs) is exerting considerable pressure on the distribution network. Hence, it is particularly important to analyze the capacity of the distribution network to accommodate EVs. To this end, we propose a method for analyzing the EV capacity of the distribution network by considering the composition of the conventional load. First, the analysis and pretreatment methods for the distribution network architecture and conventional load are proposed. Second, the charging behavior of an EV is simulated by combining the Monte Carlo method and the trip chain theory. After obtaining the temporal and spatial distribution of the EV charging load, the method of distribution according to the proportion of the same type of conventional load among the nodes is adopted to integrate the EV charging load with the conventional load of the distribution network. By adjusting the EV ownership, the EV capacity in the distribution network is analyzed and solved on the basis of the following indices: node voltage, branch current, and transformer capacity. Finally, by considering the 10-kV distribution network in some areas of an actual city as an example, we show that the proposed analysis method can obtain a more reasonable number of EVs to be accommodated in the distribution network.

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Section: Solving Processmentioning

confidence: 99%

Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition

Yang¹,

Cao²,

Tan³

et al. 2023

Energy Engineering

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show abstract

“…Wu et al [15] verifies the influence of DG location and capacity on the voltage level of the distribution network from the perspective of DG access location, capacity and network loss. Shao et al [16] analyzes the influence of DG penetration rate on power loss, reliability and voltage distribution of the grid. Moradi and Abedini [17] established a model based on typical medium voltage distribution network to study the problem of DG access capacity and position from the aspects of reverse power and voltage.…”

Section: Introductionmentioning

confidence: 99%

A Scheme for Position and Capacity Determination of Distributed Generation Considering Load Distribution and System Voltage Stability

Fan¹,

Liu²,

Li³

et al. 2020

JESA

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The purpose of this study was to investigate a simplified distributed generation (DG) Position and Capacity Determination model (DG-PCD model) based on the coupling relationship between load distribution and voltage stability in the distribution network. First, based on the relationship between voltage stability and system equivalent impedance and the relationship between system equivalent impedance and load distribution, the relationship between voltage stability and load distribution is deduced, and the concept of influencing impedance mode is proposed and used in DG site selection. Then, build a DG-PCD model considering voltage stability, active power loss and line thermal stability margin, and use genetic algorithm (GA) to solve the model. Finally, an improved IEEE33-node system calculation example is analyzed. The results show that compared with the existing methods, the proposed method can get better results faster. This Proposed method not only simplifies the DG-PCD model, but also quantifies the relationship between voltage stability and load distribution. This provides a new reference index for the voltage control of the power grid.

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Research on Operational Risk Index of Distribution Network with Distributed Generation

Zhu

et al. 2020

J. Phys.: Conf. Ser.

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This paper analyses the distributed generation’s influence on failure severity index, introduces the index which can represent the probability of islanding and derive the distribution networks’ failure severity index with the connection of distributed generation. This paper analyses how the distributed generation influence distribution networks when the wide-area distributed generation connect with networks, then deriving the distribution networks’ failure severity index with the connection of wide-area distributed generation. Through analysing the same IEEE 33 node network and calculating traditional distribution networks’ reliability index and failure severity index, we can obtain the system’s risk index. By comparing with every index in 3 different conditions, we can find that when the distributed generation connect with distribution networks, the networks’ risk tolerance has been improved, we can also find the significant improvement of distribution networks’ risk index when the wide-area distributed generation connect with distribution networks.

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Analysis on Voltage Profile of Distribution Network with Distributed Generation

Cited by 4 publications

References 4 publications

Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition

Electric Vehicle Charging Capacity of Distribution Network Considering Conventional Load Composition

A Scheme for Position and Capacity Determination of Distributed Generation Considering Load Distribution and System Voltage Stability

Research on Operational Risk Index of Distribution Network with Distributed Generation

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