A Vulnerability Assessment Method of Cyber Physical Power System Considering Power-Grid Infrastructures Failure

2019 ◽  
Author(s):  
Dai Jianfeng ◽  
Qiu Jian ◽  
Wu Jing ◽  
Wang Xuesong
Keyword(s):  
Power System ◽  
Vulnerability Assessment ◽  
Power Grid ◽  
Assessment Method ◽  
Grid Infrastructures

Research on Physical Vulnerability Assessment Method of Grid Infrastructures - Taking Substation as an Example

2014 ◽  
Vol 1044-1045 ◽  
pp. 503-506
Author(s):  
Yong Sheng Men ◽  
Long Zhe Jin ◽  
Xi Yuan Xu
Keyword(s):  
Power System ◽  
Natural Disasters ◽  
Vulnerability Assessment ◽  
Assessment Method ◽  
Grid Infrastructure ◽  
Physical Vulnerability ◽  
Safe Operation ◽  
Factors Affecting ◽  
Grid Infrastructures ◽  
Influence Degree

Grid infrastructure is vulnerable to damage or breakdown by various of natural disasters and man-made disasters to cause a loss of all or parts of the function of power system. In this paper, through the analysis of various factors affecting the hub substation physical vulnerability of hub substation such as human factors, natural disasters and equipment factors, calculate and classifiy the influence degree of each factor on the physical vulnerability. Put forward a series of suitable vulnerability assessment method for China's national hub substation. What’s more, take a specific hub substation for example to verify the assessment methods that provided a basis for safe operation of power facilities and disasters prevention.

Mid-Term Stability Assessment of Jiangxi Power Grid

2013 ◽  
Vol 732-733 ◽  
pp. 882-887
Author(s):  
Yong Chun Su ◽  
Hao Wei Jia
Keyword(s):  
Power System ◽  
Power Grid ◽  
Assessment Method ◽  
Control Measures ◽  
Assessment Process ◽  
Jiangxi Province ◽  
Stable Operation ◽  
Stability Assessment ◽  
Term Stability ◽  
The Stability

Mid-term stability assessment is an important work to support power system operation in a province power grid of China every year. The stability assessment method and process was introduced in this paper. As an example, the stability of Jiangxi province power system was evaluated in the following two years. Weak area and weak transmission line were found out in each power supply area. Prevention and control measures were proposed. According to problems among the assessment process and using the state monitoring data, an approach was discussed to increase the assessment result accuracy. The analysis conclusion provides the reference to the safe and stable operation of Jiangxi power system.

Line Vulnerability Assessment on Power Grid Based on Combination Weighing Method

2014 ◽  
Vol 986-987 ◽  
pp. 349-353 ◽  
Author(s):  
Xin Zeng ◽  
Yan Zhen Chen ◽  
Qi Yang ◽  
Miao Miao ◽  
Jian Wen Ren ◽  
...  
Keyword(s):  
Vulnerability Assessment ◽  
Power Flow ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Power Grid ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Flow Coefficient ◽  
Cascading Failures ◽  
Voltage Deviation

To study the mechanism of cascading failures in a power grid and find out the key vulnerable lines propagating cascading failures, entropy theory and analysis hierarchy process were applied in entropy-weighted fuzzy comprehensive evaluation model, and information of objective data and the subjective opinion of experts were combined in the model to implement effective evaluation and sorting of line vulnerability. The article builds a index system that contains voltage deviation, power flow coefficient and electric betweenness in considering the network structure and real-time running state of the system, and then the lines vulnerability assessment method is proposed .This method can be used to help power grid designers and operators spot the lines prone to black-out. Numerical example results show that the proposed indicators can overcome the deficiency of existing indicators not taking the state of the grid structure and operation into account which proves the assessment method is feasible.

Analysis of Power Grid Vulnerability Based on Electrical Dissection Method

2013 ◽  
Vol 448-453 ◽  
pp. 2564-2568
Author(s):  
Da Wei Huang ◽  
Ran He
Keyword(s):  
Power System ◽  
Vulnerability Assessment ◽  
System Analysis ◽  
Power Transmission ◽  
Power Grid ◽  
Vulnerability Analysis ◽  
Transmission Power ◽  
Power System Analysis ◽  
Power Limit ◽  
Dissection Method

As the power grid blackout accidents occur frequently, the vulnerability analysis becomes an important topic in power system analysis. A new electrical dissection method for the power grid vulnerability assessment is presented in this paper. The method can effectively reflect the power transmission between generator and load on the terminal of each line, and quantify the using relationship with the branch transmission power limit. An IEEE 39-bus text system was used to testify this method and the results indicated the methods efficiency and rationality. This paper is supported by NSFC 51307019.

Novel Indexes and Method for Power Grid Blackout Risk Assessment

2014 ◽  
Vol 556-562 ◽  
pp. 6665-6668
Author(s):  
Xiao Jun Lu ◽  
Kai Wen Zeng ◽  
Shi Wu Liao ◽  
Jin Yu Wen ◽  
En Lu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Power System ◽  
Risk Evaluation ◽  
Power Grid ◽  
Assessment Method ◽  
Actual System ◽  
Term Operation ◽  
Incident Investigation ◽  
Risk Assessment Method

A set of blackout risk assessment indexes is established according to Electricity Accident (Incident) Investigation Procedures of China Southern Power Grid (CSPG) (pilot) and Guide on Operational Risk Evaluation of CSPG, which can calculate risk values of electricity accidents (incidents). The calculation process is discussed in detail. Based on the proposed indexes and OPA blackout model, a blackout risk assessment method for power system is put forward, with which blackout risk for all 500kV buses in Guangdong Power Grid are evaluated. Weak areas in power system are identified and their inducements are analyzed. The identification results accord with actual system long-term operation experience, which verifies the correctness of the indexes and method.

CPIndex: Cyber-Physical Vulnerability Assessment for Power-Grid Infrastructures

2015 ◽  
Vol 6 (2) ◽  
pp. 566-575 ◽  
Author(s):  
Ceeman Vellaithurai ◽  
Anurag Srivastava ◽  
Saman Zonouz ◽  
Robin Berthier
Keyword(s):  
Vulnerability Assessment ◽  
Power Grid ◽  
Physical Vulnerability ◽  
Grid Infrastructures

Vulnerability Assessment Method for Distribution Network

2014 ◽  
Vol 986-987 ◽  
pp. 652-655
Author(s):  
Xiao Ren ◽  
Jun Liu ◽  
Ya Fang Wang
Keyword(s):  
Power System ◽  
Vulnerability Assessment ◽  
International Research ◽  
Distribution Network ◽  
Assessment Method ◽  
Global Distribution ◽  
Network Vulnerability ◽  
Assessment Methodology ◽  
The Future

. This article is based on the concept of vulnerability for power system, and focuses on vulnerable source of distribution network and summarizes the characteristics of vulnerability assessment methodologies and inadequate for the distribution network.And pointed out that domestic and international research for distribution network vulnerability is still in the initial stages,evaluation of existing methods are accessible only from one side distribution system's security status,the vulnerability assessment methodology of distribution network can be more fully reflected the global distribution network of security that will be researched in the future.

scholarly journals Impact of the Generation System Parameters on the Frequency Response of the Power System: A UK Grid Case Study

Electricity ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 143-157
Author(s):  
Jovi Atkinson ◽  
Ibrahim M. Albayati
Keyword(s):  
Power System ◽  
Frequency Response ◽  
Power Grid ◽  
Sudden Increase ◽  
Generation System ◽  
System Parameters ◽  
Primary Frequency ◽  
Primary Frequency Response ◽  
The Impact ◽  
System Inertia

The operation and the development of power system networks introduce new types of stability problems. The effect of the power generation and consumption on the frequency of the power system can be described as a demand/generation imbalance resulting from a sudden increase/decrease in the demand and/or generation. This paper investigates the impact of a loss of generation on the transient behaviour of the power grid frequency. A simplified power system model is proposed to examine the impact of change of the main generation system parameters (system inertia, governor droop setting, load damping constant, and the high-pressure steam turbine power fraction), on the primary frequency response in responding to the disturbance of a 1.32 GW generation loss on the UK power grid. Various rates of primary frequency responses are simulated via adjusting system parameters of the synchronous generators to enable the controlled generators providing a fast-reliable primary frequency response within 10 s after a loss of generation. It is concluded that a generation system inertia and a governor droop setting are the most dominant parameters that effect the system frequency response after a loss of generation. Therefore, for different levels of generation loss, the recovery rate will be dependent on the changes of the governor droop setting values. The proposed model offers a fundamental basis for a further investigation to be carried on how a power system will react during a secondary frequency response.

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