Regional Vulnerability Analysis of Grid Structure

2013 ◽  
Vol 419 ◽  
pp. 877-882
Author(s):  
Xun Cheng Huang ◽  
Huan Qi ◽  
Xiao Pan Zhang ◽  
Li Fang Lu ◽  
Yang Yu Hu
Keyword(s):  
Power System ◽  
Complex Network ◽  
Network Theory ◽  
Power Grid ◽  
Maximum Load ◽  
Central China ◽  
Cascading Failure ◽  
Grid Structure ◽  
Complex Network Theory ◽  
Regional Vulnerability

Cascading failure of network features in power system is analyzed in this paper using complex network theory and method, and Central China power grid are analyzed in detail on the three kinds of attack forms (maximum load, the most generous attack and random attack) of regional vulnerability. It provides technical means for the prevention of cascading failure .

Identifying the Optimal Point of Interconnection Based on the Complex Network Theory

2013 ◽  
Vol 827 ◽  
pp. 276-281
Author(s):  
Tian Lin Ma ◽  
Jian Xi Yao ◽  
Cheng Qi ◽  
Hong Lu Zhu ◽  
Tian Hai Ma
Keyword(s):  
Power System ◽  
Complex Network ◽  
Network Theory ◽  
Power Grid ◽  
Critical Threshold ◽  
Stable Operation ◽  
Optimal Point ◽  
Photovoltaic Generation ◽  
Complex Network Theory ◽  
The Impact

The issue about choosing the point of interconnection is important to reduce the impact of Photovoltaic generation to the power grid security and investment. Here we present a model to identify the optimal point of Photovoltaic generation interconnection, based on the identification method of the critical elements in the complex network theory. In the model, the critical threshold is used as the measure index which reflects the minimum capacity of power grid to maintain every element stable operation. The simulations are carried out in the IEEE-118 power system, the IEEE-145 power system and the IEEE-162 power system, and the results show that the nodes with relative large electrical betweenness are good choice of the Photovoltaic generation interconnection points and the generation nodes are better choices compared to the transmission nodes. The work may have a certain guiding significance for the selection of Photovoltaic generation interconnection point and the planning of power system.

scholarly journals Research on the Structural Characteristics of Transmission Grid Based on Complex Network Theory

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Jinli Zhao ◽  
Hongshan Zhou ◽  
Bo Chen ◽  
Peng Li
Keyword(s):  
Complex Network ◽  
Network Model ◽  
Statistical Characteristic ◽  
Network Theory ◽  
Structural Characteristics ◽  
Power Grid ◽  
Characteristic Parameters ◽  
Characteristic Structure ◽  
Complex Network Theory ◽  
Transmission Grid

Reasonable and strong structure is an important foundation for the smart transmission grid. For vigorously promoting construction of the smart grid, it is of great significance to have a thorough understanding of the complex structural characteristics of the power grid. The structural characteristics of several actual large-scale power grids of China are studied in this paper based on the complex network theory. Firstly, the topology-based network model of power grid is recalled for analyzing the statistical characteristic parameters. The result demonstrated that although some statistical characteristic parameters could reflect the topological characteristics of power grid from different ways, they have certain limitation in representing the electrical characteristics of power grid. Subsequently, the network model based on the electrical distance is established considering the limitation of topology-based model, which reflects that current and voltage distribution in the power grid are subject to Ohm's Law and Kirchhoff's Law. Comparing with the topology-based model, the electrical distance-based model performs better in reflecting the natural electrical characteristic structure of power grid, especially intuitive and effective in analyzing clustering characteristics and agglomeration characteristics of power grid. These two models could complement each other.

Vulnerability Assessment and Analysis of Active Distribution Network Structure

2014 ◽  
Vol 568-570 ◽  
pp. 1843-1849
Author(s):  
Da Chuan Liu ◽  
Jian Hua Zhang ◽  
Dan Wang ◽  
Hai Nan Li ◽  
Bo Zeng
Keyword(s):  
Power System ◽  
Complex Network ◽  
Network Structure ◽  
Network Theory ◽  
Large Scale ◽  
Fossil Fuels ◽  
Distribution Network ◽  
Complex Network Theory ◽  
Active Distribution Network ◽  
The Impact

Owing to more and more people concern about environment issues and reduction of fossil fuels, a growing number of distributed generations (DGs) are being interconnected to the power system. The active distribution network (ADN) provides an effective way to achieve the large scale connection and efficient utilization of them. This paper analyzes the vulnerability performance of active distribution network quantitatively and discusses the impact of DGs on the distribution network transmission efficiency under different grid structure through the application of complex network theory in power system. The example results show that meshed network structure can effectively promoting the consumption of DG and verify the feasibility of applying complex network theory to the distribution network for vulnerability analysis.

A Novel Transmission Line Vulnerability Evaluation Method Based on Complex Network Theory

2014 ◽  
Vol 494-495 ◽  
pp. 1866-1869
Author(s):  
Zhi Du ◽  
Gang Wang ◽  
Da Hai You ◽  
Wei Hua Chen ◽  
Ke Wang ◽  
...  
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Complex Network ◽  
Network Theory ◽  
Evaluation Method ◽  
Capacity Utilization ◽  
Static Stability ◽  
Load Level ◽  
Utilization Rate ◽  
Complex Network Theory

As further development on the applications of CN (complex network) theory, evaluation of transmission line vulnerability requires the consideration of physical attributes of power system, instead of simply considering its topology features, which helps to deduce more precise predictions for the stability of power system. This paper introduces a novel and efficient evaluation method based on CN theory to evaluate influence of line faults to the static stability of power system, comprehensively considering the factors of system load level, power capacity utilization rate of transmission lines and worldlet features. The method is illustrated in the IEEE118 bus system.

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