Reliability Evaluation of Main Electrical Connection for the Smart Substation with DCB

2014 ◽  
Vol 521 ◽  
pp. 453-456
Author(s):  
Yang Qi Huang ◽  
Jian Hua Zhang ◽  
Xin Yi Lu ◽  
Nian Liu
Keyword(s):  
Smart Grid ◽  
Research And Development ◽  
Reliability Evaluation ◽  
Design Concept ◽  
Electrical Connection ◽  
Minimal Cut Set ◽  
Execution Unit ◽  
Cut Set ◽  
New Generation ◽  
Smart Substation

As an important part of smart grid, smart substation is the acquisition source of operating data and command execution unit, and also acts as the important foundation and support of smart grid. With the continuous deepening of smart substation construction in State Grid Corporation, the overall integration design concept of the new generation smart substation based on research and development of new equipment has been put forward, realizing the main electrical connection optimization and improvement of reliability .Concerning the characteristic and application of DCB in smart substation, reliability of three kinds of typical main electrical connection schemes in existing substation and smart substation is calculated by the minimal cut-set method in this paper.

Study on the Main Electrical Connection Optimization of Smart Substation Based on Coordination between Power Grid and Substation

2014 ◽  
Vol 1070-1072 ◽  
pp. 1405-1408
Author(s):  
Yang Qi Huang ◽  
Nian Liu ◽  
Jian Hua Zhang ◽  
Xiao Hui Qin
Keyword(s):  
Smart Grid ◽  
Power Grid ◽  
Circuit Breaker ◽  
Coordinated Development ◽  
Design And Optimization ◽  
Electrical Connection ◽  
Optimization Schemes ◽  
Smart Substation

With the construction of smart grid and smart substation, influences of the main electrical connection on the reliability of the entire power gird have become more and more important. Therefore, coordinated development between power grid and substation is a key to the design and optimization of main electrical connection. In this paper, the entire equipment in power grid including the main electrical connection is simulated simultaneously, and then the index of power gird with the main electrical connection optimization by disconnecting circuit breaker is calculated. Optimization schemes are sorted by the method of TOPSIS, realizing the evaluation of main electrical connection based on coordinated development between power grid and substation.

scholarly journals Reliability Evaluation for Cyber-Physical Smart Substation

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Yangrong Chen ◽  
Jun’e Li ◽  
Ang Xu ◽  
Kai Yuan ◽  
Kaipei Liu
Keyword(s):  
Smart Grid ◽  
Hybrid Method ◽  
Sampling Method ◽  
Circuit Breaker ◽  
Latin Hypercube Sampling ◽  
Reliability Evaluation ◽  
Stable Operation ◽  
Reliability Indices ◽  
Physical Interactions ◽  
Smart Substation

Smart substation is the key part of smart grid. The reliability of smart substation is extremely important to the safe and stable operation of the smart grid. Smart substation is a cyber-physical system (CPS). Hence, this paper conducts reliability evaluation study for smart substation from the perspective of CPS. Firstly, the basic reliability indices of cyber and physical elements of smart substation are presented. The reliability index of one cyber element takes into account the reliability factors of data leakage, tampering, loss and delay, etc., on the cyber side. Then, the cyber-physical interactions of smart substation are analyzed. It is concluded that the effect of the cyber side and cyber-physical interactions on the reliability of smart substation is reflected in the effect of measurement and control messages on circuit breaker operation. And, the new reliability indices considering cyber-physical interactions are proposed. Furthermore, the MALI-hybrid method, which combines the Monte Carlo method, analytical method, Latin hypercube sampling method, and important sampling method, is presented for evaluating the reliability of smart substation. Finally, the rationality of the proposed reliability indices, the efficiency, and correctness of MALI-hybrid method are verified by case studies.

Electric Circuit Theory Based Minimal Cut-Set Realization for Reliability Evaluation of Non-Directional Networks

2018 ◽  
Author(s):  
Shayan Behzadirafi ◽  
Hossein Salehfar ◽  
Arun-Kaarthick Manoharan ◽  
Sandhya Rani Nadipalli ◽  
Visvakumar Aravinthan
Keyword(s):  
Electric Circuit ◽  
Reliability Evaluation ◽  
Circuit Theory ◽  
Minimal Cut Set ◽  
Minimal Cut ◽  
Cut Set ◽  
Directional Networks

The influence of switching actions with redundant components on the main reliability substations

2019 ◽  
Vol XXII (2) ◽  
pp. 284-295
Author(s):  
Pană L.
Keyword(s):  
Reliability Analysis ◽  
Failure Modes ◽  
Circuit Breaker ◽  
Reliability Evaluation ◽  
State Model ◽  
Reliability Indices ◽  
Minimal Cut Set ◽  
Minimal Cut ◽  
Cut Set ◽  
Three State Model

In this paper is presented a substations reliability analysis based upon substation’s component outage or failure modes. The switching actions can be modelled in the reliability evaluation indices we used the three-state model of the substation components (for example circuit breaker). The reliability indices are evaluated using the minimal cut-set method for each components of substation.

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