Reliability evaluation of medium voltage distribution network with private electric vehicle

2016 ◽  
Author(s):  
Cai Guanglin ◽  
Lin Yong ◽  
Huan Jiajia ◽  
Chen Ya ◽  
Hu Bo ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Distribution Network ◽  
Reliability Evaluation ◽  
Voltage Distribution ◽  
Medium Voltage

scholarly journals Distribution Network Hierarchically Partitioned Optimization Considering Electric Vehicle Orderly Charging with Isolated Bidirectional DC-DC Converter Optimal Efficiency Model

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1614
Author(s):  
Qiushi Zhang ◽  
Jian Zhao ◽  
Xiaoyu Wang ◽  
Li Tong ◽  
Hang Jiang ◽  
...  
Keyword(s):  
Load Balancing ◽  
Electric Vehicle ◽  
Double Layer ◽  
Electric Vehicles ◽  
Distribution Network ◽  
Collaborative Optimization ◽  
Voltage Distribution ◽  
Medium Voltage ◽  
Scheduling Model ◽  
Optimal Efficiency

The access of large-scale electric vehicles (EVs) will increase the network loss of medium voltage distribution network, which can be alleviated by adjusting the network structure and orderly charging for EVs. However, it is difficult to accurately evaluate the charging efficiency in the orderly charging of electric vehicle (EV), which will cause the scheduling model to be insufficiently accurate. Therefore, this paper proposes an EV double-layer scheduling model based on the isolated bidirectional DC–DC (IBDC) converter optimal efficiency model, and establishes the hierarchical and partitioned optimization model with feeder–branch–load layer. Firstly, based on the actual topology of medium voltage distribution network, a dynamic reconfiguration model between switching stations is established with the goal of load balancing. Secondly, with the goal of minimizing the branch layer network loss, a dynamic reconstruction model under the switch station is established, and the chaotic niche particle swarm optimization is proposed to improve the global search capability and iteration speed. Finally, the power transmission loss model of IBDC converter is established, and the optimal phase shift parameter is determined to formulate the double-layer collaborative optimization operation strategy of electric vehicles. The example verifies that the above model can improve the system load balancing degree and reduce the operation loss of medium voltage distribution network.

Power Supply Reliability Evaluation Based on the Characteristics Mode of Large-Scale Medium Voltage Distribution Network

2013 ◽  
Vol 341-342 ◽  
pp. 1380-1383
Author(s):  
Yan Yan Cui ◽  
Da Pu Zhao ◽  
Wei Liu ◽  
Yu Long
Keyword(s):  
Power Supply ◽  
Large Scale ◽  
Evaluation Method ◽  
Network Reliability ◽  
Structural Characteristics ◽  
Distribution Network ◽  
Reliability Evaluation ◽  
Voltage Distribution ◽  
Medium Voltage ◽  
Supply Reliability

It is difficult to evaluate and analyze power supply reliability of large-scale medium voltage distribution network by detailed modeling method. The paper proposes a power supply reliability evaluation method of large-scale medium voltage distribution network, which is based on the network reliability characteristics model. Lines with similar structural characteristics are designated as one model. The reliability index of each mode can be represented by the typical lines. The assessment principle, process and the advantages of this method are elaborated. The medium voltage distribution network of Nanjing area is taken as an example to evaluate power supply reliability. And the results are compared with historical statistics. The result shows that the method can greatly reduce the workload and has high accuracy. It can be used to evaluate the reliability of large-scale medium voltage distribution network.

scholarly journals Studi Penempatan Titik Pentanahan Kawat Tanah Pada Penyulang Serangan

2016 ◽  
Vol 15 (1) ◽  
pp. 27
Author(s):  
I Wayan Agus Teja Baskara ◽  
I G Dyana Arjana ◽  
I W Rinas
Keyword(s):  
Distribution Network ◽  
Economic Aspect ◽  
Voltage Distribution ◽  
Lightning Strikes ◽  
Medium Voltage ◽  
The Cost

Ground wire is one of the lighning protection instrument used in medium voltage distribution network with the intention to reduce interference due to lightning strikes. On the feeder Serangan the ground wire put 4 – 5 wicket. To know effective gap of ground wire is put on the feeder Serangan then used effectiveness ground wire parameters and total of disorder by lightning strikes directly or indirectly. From the analysis is obtained the effective gap on scenario 4 by 3 – 4 wicket. Choosing scenario 4 is as effective gap because seen by economic aspect, as longest gap point put of ground wire then the cost needed to use material and the installation of ground wire will be cheaper.  DOI: 10.24843/MITE.1501.05

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