Study on the Voltage Sequence of Urban DC Distribution Network for Integrated Power Supply and Renewable Energy Access

Author(s):  
Ronghui Ye ◽  
Cangen Li ◽  
Weibin Liu ◽  
Keteng Jiang ◽  
Haibo Li ◽  
...  
2021 ◽  
Author(s):  
Yuwei Zhang ◽  
Jinxing Xiao ◽  
Jun Yang ◽  
Bingyan Xu ◽  
Rui Li ◽  
...  

2014 ◽  
Vol 1008-1009 ◽  
pp. 723-728 ◽  
Author(s):  
Xu Dong Song ◽  
Nan Hua Yu ◽  
Jun Jun Liang ◽  
Cheng Jun Xia

With the rapid development of DG, especially the access of large-scale renewable energy, traditional simple distribution network with unique source turns into ADN with multiple sources, making the distribution network more complicated. In this paper, The power source and grid planning of traditional and intelligent distribution network are discussed, based on which the problems ADN faces and the research difficulty are focused on. The key technology of ADN planning is analyzed, including the uncertainty of load forecasting, the ADN absorption capacity for DG and the cost-effectiveness of ADN planning. Some suggestions for the research direction of ADN in the future are made at the end, providing reference for the ADN planning with large-scale renewable energy access.


2021 ◽  
Vol 252 ◽  
pp. 03031
Author(s):  
Fengzhi Wu ◽  
Gaofeng Xu ◽  
Ziyi Qi ◽  
Zhi Qi ◽  
Meng Zhang ◽  
...  

Smart city energy Internet is to comply with the trend of sustainable energy development, urban power energy as the center, comprehensive utilization of all kinds of energy, especially renewable energy, to achieve interconnection and common optimization. Based on the background of distribution network in Disney Park, this paper studies the regulation, operation and management strategy of distribution network of smart city energy Internet. This paper describes the characteristics of the energy Internet, and then analyzes the key technologies that affect power grid regulation, operation and management. The paper investigated the distribution network construction in Shanghai Disney Park under the background of urban energy Internet pilot region to understand the allocation of distributed energy in the park grid. Through simulation calculation and analysis, this paper puts forward a distribution network regulation and management scheme suitable for the characteristics of energy Internet. In this paper, the study found that with the rapid development of power grid, especially all kinds of distributed energy access, the new lines are becoming more. In a wide range of power grid structure is becoming more and more complex, in order to ensure the reliability of power supply and power supply quality, scientific regulation under the background of urban energy Internet development mode, enhancing the management level of power grid is the inevitable developing trend of power grid.


2014 ◽  
Vol 960-961 ◽  
pp. 676-679
Author(s):  
Dong Xin Hao ◽  
Li Zhang ◽  
Meng Qi Liu ◽  
Pan Ting Dong ◽  
Hao Wu

The combined AC+DC distribution network in this study provides a coupling and decoupling strategy of renewable energy in DC mode by using zig-zag transformer, which makes each line transmit AC electrical power and DC power simultaneously. The proposed scheme is digitally simulated with the help of Simulink software package. Simulation results indicate lower line voltage drop and less active and reactive power loss in steady state; almost similar or even better transient effects in transient state, which demonstrates the feasibility of combined AC+DC distribution network of single line interconnected with renewable energy.


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