scholarly journals Water Distribution System Risk Assessment Method

2014 ◽  
Vol 89 ◽  
pp. 355-362 ◽  
Author(s):  
F. Cubillo ◽  
P. Pérez
Keyword(s):  
Risk Assessment ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Assessment Method ◽  
Risk Assessment Method ◽  
System Risk

Risk Assessment Modeling for Water Distribution Systems in Mega Cities

2013 ◽  
Vol 353-356 ◽  
pp. 2957-2960
Author(s):  
Jia Sun ◽  
Guo Ping Yu
Keyword(s):  
Risk Assessment ◽  
Land Subsidence ◽  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution System ◽  
Water Distribution Systems ◽  
Assessment Model ◽  
Strategic Decision ◽  
Mega Cities

In study of a series of damages to water distribution systems caused by urban land subsidence, risk assessment modeling is necessary for risk management especially in Mega-cities. First of all, the Catastrophe Theory was employed to analyze the Catastrophe mechanism, and a function catastrophe simulation model was established accordingly to get the vulnerability index of water distribution system. Secondly, risk entropy model was used to analyze the risk of pipe network suffering the land subsidence with the disorder and uncertainty features according to risk theory. Finally, to get the risk index the water distribution system of Guangzhou city was taken to the risk assessment model utilizing the level of land subsidence identified by the dimensional analytical method. The results showed that the risk of land subsidence under the city water distribution system security upgrade is feasible to provide a risk assessment of the strategic decision-making model.

scholarly journals Risk Assessment Method for Integrated Transmission–Distribution System Considering the Reactive Power Regulation Capability of DGs

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3040
Author(s):  
Qi Wang ◽  
Dasong Sun ◽  
Jianxiong Hu ◽  
Yi Wu ◽  
Ji Zhou ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Power System ◽  
Distribution System ◽  
Reactive Power ◽  
Distribution Networks ◽  
Assessment Method ◽  
Fault Analysis ◽  
Power Sources ◽  
Risk Assessment Method ◽  
Power Regulation

High distributed generation (DG) penetration makes the traditional method of equalizing the distribution power system (DPS) to the PQ load bus in the risk assessment of the transmission power system (TPS) no longer applicable. This paper proposes a risk assessment method for an integrated transmission–distribution system that considers the reactive power regulation capability of the DGs. Based on the DG’s characteristics and network constraints, the regulation capacity is mapped to the boundary buses of the distribution networks. Coordinating the relationship between reactive power and active power, the utilization of the regulation capacity is maximized to reduce the load shedding in the fault analysis of the TPS. Simulation results in the integrated transmission–distribution system illustrate that the effective use of the regulation capacity of the DPS can reduce the risk of the TPS. The method can be applied to the reactive power sources planning and dispatching of power system.

Assessment of Power System Risk in Cyber-Attacks in View of the Role Protection Systems

2017 ◽  
Vol 8 (1) ◽  
pp. 184
Author(s):  
Hui Hwang Goh ◽  
Sy yi Sim ◽  
Omar Abdi Mohamed ◽  
Ahmed Farah Mohamed ◽  
Chin Wan Ling ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Power Systems ◽  
Cyber Security ◽  
Circuit Breaker ◽  
Assessment Method ◽  
Cyber Attacks ◽  
Risk Assessment Method ◽  
Protection Systems ◽  
System Risk ◽  
Bus System

<p>This paper presents a risk assessment method for assessing the cyber security of power systems in view of the role of protection systems. This paper examines the collision of transmission and bus line protection systems positioned in substations on the cyber-physical performance of the power systems. The projected method simulates the physical feedback of power systems to hateful attacks on protection system settings and parameters. The relationship between protection device settings, protection logic, and circuit breaker logic is analyzed. The expected load reduction (ELC) indicator is used in this paper to determine potential losses in the system due to cyber attacks. The Monte Carlo simulation is used to calculate ELC’s account to assess the capabilities of the attackers and bus arrangements are changed. The influence of the projected risk assessment method is illustrated by the use of the 9-bus system and the IEEE-68 bus system.</p>

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