Application of Network Structural Properties of a Power System for Voltage Stability Assessment in an Electric Power Grid

2021 ◽  
Author(s):  
Isaiah G. Adebayo ◽  
Yanxia Sun
Keyword(s):  
Power System ◽  
Electric Power ◽  
Structural Properties ◽  
Voltage Stability ◽  
Power Grid ◽  
Stability Assessment ◽  
Electric Power Grid

Theorems to explore the nature of cyber attacks on power system voltage stability

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Aniruddha Agrawal ◽  
Donnagratia Syndor ◽  
Dallang M. Momin ◽  
Shaik Affijulla
Keyword(s):  
Power System ◽  
Electric Power ◽  
Voltage Stability ◽  
Power Grid ◽  
Cyber Attacks ◽  
Cyber Attack ◽  
Electric Grid ◽  
Electric Power Grid ◽  
Bus Voltage ◽  
Attack Models

Abstract Smart electric grids are practising flexible, reliable and robust operations during delivery and consumption of power. However, these grids are highly vulnerable to a wide range of cyber attacks due to the deployment of an extensive communication network. In this paper, the nature of cyber attack on given power system based on proposed cyber attack models and theorems is analysed by utilizing steady state voltage stability (L index). Further, a cyber attack factor is introduced which may mislead the bus voltage stability virtually. The proposed cyber attack models and theorems are validated by executing cyber attacks on WSCC 9 bus and IEEE 14 bus test systems by using Siemens PSS/E and MATLAB softwares. Through the proposed theorems, the paper exposes and quantifies the threat of cyber attacks in the electric power grid. The simulation results reveal that the proposed cyber attack models may misrepresent the bus voltage stability, thereby misleading the energy management centre (EMC) operator into taking incorrect countermeasures. The above incorrect actions may force voltage instability which further leads to major interruptions in the electric power supply and possible cascading failure of the electric power grid. Moreover, the proposed theorems and rigorous simulations presented in the paper support the EMC operator in intelligently identifying a cyber attack, thereby enabling development of appropriate corrective actions during such cyber attacks on the smart electric grid. Thus, the concept of proposed methodology could best assist the power system operator to build detection algorithms for discrimination of cyber attacks from electrical faults towards strong electric grid resilience character.

A holistic review on Cyber-Physical Power System (CPPS) testbeds for secure and sustainable electric power grid – Part – I: Background on CPPS and necessity of CPPS testbeds

2022 ◽  
Vol 136 ◽  
pp. 107718
Author(s):  
Rajaa Vikhram Yohanandhan ◽  
Rajvikram Madurai Elavarasan ◽  
Rishi Pugazhendhi ◽  
Manoharan Premkumar ◽  
Lucian Mihet-Popa ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Grid ◽  
Electric Power Grid ◽  
Holistic Review

scholarly journals Modelling of an Electric Power Grid for New Power Plant Evacuation

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Sunday Adetona ◽  
Emenike Ugwuagbo ◽  
Frank Okafor ◽  
Tolulope Akinbulire
Keyword(s):  
Power Plant ◽  
Power System ◽  
Electric Power ◽  
Transient Stability ◽  
Short Circuit ◽  
Power Grid ◽  
Load Flow ◽  
System Stability ◽  
System Component ◽  
Electric Power Grid

Injection of a new power system component into an existing power grid often cause change in the behaviour of the power grid to which it is injected. Therefore, forecasting possible unsafe condition(s) of the power grid using an efficient power study tool is essential; and, provision of necessary mitigation actions to ensure a reliable grid is important. This paper, therefore, presents evacuation study of a 400 MW power plant connecting to the 15 GW planned transmission network of the Transmission Company of Nigeria (TCN). The NEPLAN power system analytical software was used in the modelling and simulation of the electric power grid. In the research, load flow, short circuit, transient stability, and contingency analyses were performed on the case study. From the short circuit study, it is observed that if TCN network expansion program is fully implemented, the short circuit level will go beyond the existing switchgear ratings in major substations of the network. However, with the introduction of substation splitting at Omotoso and ongoing Ogijo substations, the short circuit level will be reduced by 15%; leading to improvement in the overall system stability. Keywords—Load flow, short circuit study, transient stability study, and contingency analysis

A specialized review on outlook of future Cyber-Physical Power System (CPPS) testbeds for securing electric power grid

2022 ◽  
Vol 136 ◽  
pp. 107720
Author(s):  
Rajaa Vikhram Yohanandhan ◽  
Rajvikram Madurai Elavarasan ◽  
Rishi Pugazhendhi ◽  
Manoharan Premkumar ◽  
Lucian Mihet-Popa ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Grid ◽  
Electric Power Grid
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