NDLI: Distribution network operational risk assessment and early warning considering multi-risk factors

Content Provider	IET Digital Library
Author	Chen, Lijuan Liu, Li Peng, Yan Chen, Wenjin Huang, Hongyang Wu, Tiantian Xu, Xiaohui
Abstract	Under the impact of various uncertainties, the potential operation risk of the distribution network is gradually gaining more and more attention in both security and economy. To comprehensively determine the risk level, an operational risk assessment method considering multiple risk factors is proposed. Firstly, probabilistic models are established including temporal distributions of electric vehicles and uncertainties of renewable energy. Secondly, a time-sequential security risk assessment method with several security indicators including overvoltage risk, undervoltage risk, line-overload risk and load-loss risk is established using probabilistic load flow and dynamical sensitivity weight analysis method. Thirdly, conditional value at risk model is presented for time-varying economic risk considering line-loss risk and operational profit or loss risk of distributed generations. Finally, a risk early warning standard is proposed to realise the visualisation of risk warning by defining the risk level and risk area. Simulations of different scenarios are conducted on the modified IEEE 34-bus radial test system and the results reveal that the proposed strategy is effective and practical.
Starting Page	3139
Ending Page	3149
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 16, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1198
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-04-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Conditional Value at Risk Model Distributed Generations Distributed Power Generation Distribution Network Distribution Network Operational Risk Assessment Dynamical Sensitivity Weight Analysis Method Electric Vehicle Line-overload Risk Load Flow Load-loss Risk Modified IEEE 34-bus Radial Test System Multiple Risk Factors Multirisk Factors Operational Profit Operational Risk Assessment Method Overvoltage Risk Potential Operation Risk Power Distribution Economics Power Generation Economics Power System Control Power System Economics Power System Managemen Power System Operation Power System Security Probabilistic Load Flow Probabilistic Model Probability Renewable Energy Source Renewable Energy Uncertainties Risk Analysis Risk Area Risk Early Warning Standard Risk Level Risk Management Risk Warning Virtualization Security Indicators Sensitivity Analysis Statistics Temporal Distribution Time-sequential Security Risk Assessment Method Time-varying Economic Risk Transportation
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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