Multilevel Comprehensive Operation Risk Assessment of Active Distribution Network Based on PMU

2019 ◽  
Author(s):  
Zhou Jian ◽  
Tian Shuxin ◽  
S. Chao ◽  
Song Yan ◽  
Fu Yang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Distribution Network ◽  
Active Distribution Network ◽  
Operation Risk

scholarly journals Risk Assessment of Power System based on a Three Level Capability from Active Distribution Network

2019 ◽  
Vol 158 ◽  
pp. 3184-3190
Author(s):  
Gongxin Li ◽  
Zili Yin ◽  
Gonglin Zhang ◽  
Wenying Huang ◽  
Lin Li ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Power System ◽  
Distribution Network ◽  
Active Distribution Network

scholarly journals Operational Risk Assessment of Distribution Network Equipment Based on Rough Set and D-S Evidence Theory

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Cunbin Li ◽  
Gefu Qing ◽  
Peng Li ◽  
Tingting Yin
Keyword(s):  
Risk Assessment ◽  
Rough Set ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Network ◽  
Evidence Theory ◽  
Operational Risk ◽  
Power Distribution System ◽  
Network Equipment ◽  
Operation Risk

With the increasing complication, compaction, and automation of distribution network equipment, a small failure will cause an outbreak chain reaction and lead to operational risk in the power distribution system, even in the whole power system. Therefore, scientific assessment of power distribution equipment operation risk is significant to the security of power distribution system. In order to get the satisfactory assessment conclusions from the complete and incomplete information and improve the assessment level, an operational risk assessment model of distribution network equipment based on rough set and D-S evidence theory was built. In this model, the rough set theory was used to simplify and optimize the operation risk assessment indexes of distribution network equipment and the evidence D-S theory was adopted to combine the optimal indexes. At last, the equipment operational risk level was obtained from the basic probability distribution decision. Taking the transformer as an example, this paper compared the assessment result obtained from the method proposed in this paper with that from the ordinary Rogers ratio method and discussed the application of the proposed method. It proved that the method proposed in this paper is feasible, efficient, and provides a new way to assess the distribution network equipment operational risk.

scholarly journals Operation risk assessment of distribution network considering time dependence correlation coefficient

2017 ◽  
Vol 2017 (13) ◽  
pp. 2489-2495 ◽  
Author(s):  
Tianying Xiao ◽  
Wei Pei ◽  
Hua Ye ◽  
Geng Niu ◽  
Hao Xiao ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Time Dependence ◽  
Correlation Coefficient ◽  
Distribution Network ◽  
Operation Risk

scholarly journals Research on Dynamic Risk Assessment and Active Defense Strategy of Active Distribution Network under Ice Weather

2020 ◽  
Vol 10 (2) ◽  
pp. 672
Author(s):  
Xin-Rui Liu ◽  
Hao Wang ◽  
Qiu-Ye Sun ◽  
Peng Jin
Keyword(s):  
Risk Assessment ◽  
Distribution Network ◽  
Fault Isolation ◽  
Assessment Index ◽  
Defense Strategies ◽  
Defense Strategy ◽  
Active Defense ◽  
Active Distribution Network ◽  
Dynamic Risk ◽  
Dynamic Risk Assessment

With the continuous development of the active distribution network (ADN), the problem of security and stability has become increasingly prominent. From the perspective of improving the defense capability of ADN, a new a multi-angle dynamic risk assessment index system based on the comprehensive vulnerability rate model is proposed in this paper. Risk threshold is used to monitor the status of the distribution network, which determine whether ADN needs to enter the active defense period. The minimum amount of load shedding outside the fault isolation region is regarded as the objective function, considering other constraints such as limited resources, the coordinated active defense strategy (CADS) is formed in this paper. Finally, the accuracy of the comprehensive vulnerability rate and the risk assessment value are verified by example analysis, and the superiority of the CADS is verified by comparing different defense strategies.

Hierarchical Risk Assessment of Transmission System Considering the Influence of Active Distribution Network

2015 ◽  
Vol 30 (2) ◽  
pp. 1084-1093 ◽  
Author(s):  
Hongjie Jia ◽  
Wenjin Qi ◽  
Zhe Liu ◽  
Bingdong Wang ◽  
Yuan Zeng ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Distribution Network ◽  
Transmission System ◽  
Active Distribution Network
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