Dimension of distribution system security region: concept, calculation and application

Xiao, Jun; Su, Ya; Zhang, Han

doi:10.1049/iet-gtd.2019.0999

Cited by 3 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higher dimension requires more parameters to describe a DSSR, which indicates that the DSSR problem has a larger scale. Two forms of DSSR dimension are proposed to describe the scale of DSSR [24]. One is defined with two parameters, the number of security boundaries and the number of variables in them.…”

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

“…The unary dimension is the square of the number of the feeders in the equivalent full-link network. The details on how to obtain the number of the feeders of equivalent virtual full-link network can refer to [24]. The definition of DSSR dimension in ref.…”

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

“…The definition of DSSR dimension in ref. [24] is not convenient to use since it is computationally complex and hard to be obtained from the incidence matrix of the DSSR expressions.…”

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

“…k is the number of groups of feeder combinations. A feeder combination is the combination of feeders linked with each other through the tie switches [24]. m i is the number of feeders in the ith feeder combination.…”

Section: A New Definition Of Dssr Dimensionmentioning

confidence: 99%

See 3 more Smart Citations

Decoupling and dimension reduction method for distribution system security region

Xiao,

Fan,

Jiang

2023

IET Energy Syst Integration

View full text Add to dashboard Cite

The application of the security region methodology in a practical distribution system with large scale normally requires large computer memory and high computation time. To overcome this problem, this article proposes a decoupling and dimension reduction method, which can significantly accelerate the calculation of distribution system security region (DSSR) and is important for the application of the DSSR theory in large‐scale distribution systems. First, the definition of DSSR dimension reflecting the size of solution space and the time complexity is proposed. And the solution algorithm for DSSR dimension is also given. Second, a decoupling and dimension reduction method suitable for the analysis of DSSR is proposed. Following the method, an incidence matrix can be obtained from the DSSR expressions, which can be further divided into multiple block matrices. According to the feeder combinations of the block matrices, the distribution system can be decoupled into multiple sub‐networks for more efficient analysis. Finally, a 10kV distribution network is used in case study to validate the proposed method. The results for a time‐consuming calculation, that is, TSC curve calculation, show that the proposed method can reduce the computation time significantly, making the time‐consuming calculation suitable for the analysis of large‐scale cases.

show abstract

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

“…The definition of DSSR dimension in ref. [24] is not convenient to use since it is computationally complex and hard to be obtained from the incidence matrix of the DSSR expressions.…”

Section: Background Of Dssr Dimensionmentioning

confidence: 99%

Section: A New Definition Of Dssr Dimensionmentioning

confidence: 99%

See 2 more Smart Citations

Decoupling and dimension reduction method for distribution system security region

Xiao,

Fan,

Jiang

2023

IET Energy Syst Integration

View full text Add to dashboard Cite

show abstract

“…In Xiao et al, the AC power flow model of DSSR considering network loss and voltage constraints is established. AC power flow DSSR is formulated as follows:

Ω_{DSSR} = true[bold-italicW = ((),,,, P_{B_{1}}, P_{{normalB}_{2}}, \dots, P_{{normalB}_{i}} \dots) (|,, h ((), W) = 0, g ((), W) \leq 0 true]),

where W is the N‐1 SR without distributed generation (DG).…”

Section: Sr Models Of Distribution Systemmentioning

confidence: 99%

Security distance for distribution system: Definition, calculation, and application

Xiao

Lin

Bai

et al. 2019

Int Trans Electr Energ Syst

Self Cite

View full text Add to dashboard Cite

Summary This paper proposes the definition, calculation, and application of security distance for distribution system. Firstly, state space is divided into N‐1 security region, sub–security region, and insecurity region considering N‐1 contingency. Security distance is the distance from an operating point (state) to the boundary of the security region. Secondly, two types of distances, ie, geometric distance and state distance, in state space are defined. Then 18 specific security distances are defined and calculated using two‐step method based on DC and AC power flow. Thirdly, the application of the proposed security distances on security analysis is presented, including security check, security evaluation, and cross‐boundary analysis. The most insecure directions and security control schemes with minimum cost can be found by the cross‐boundary analysis. Finally, case studies are presented to illustrate and verify the effectiveness of the proposed security distances. In this paper, security distance for distribution system is systematically developed, and the cross‐boundary analysis method enriches the existing security analysis.

show abstract

Genetic algorithm based optimization technique for improving performance of existing system with distributed generation units

Gupta

2023

Proceedings of the 4th International Computer Sciences and Informatics Conference (Icsic 2022)

View full text Add to dashboard Cite

Dimension of distribution system security region: concept, calculation and application

Cited by 3 publications

References 18 publications

Decoupling and dimension reduction method for distribution system security region

Decoupling and dimension reduction method for distribution system security region

Security distance for distribution system: Definition, calculation, and application

Genetic algorithm based optimization technique for improving performance of existing system with distributed generation units

Contact Info

Product

Resources

About