Study of Cyber-Security on Load Frequency Control in Power System
- 1. Study of Cyber-Security on Load Frequency Control in Power System Presented By: U KUSHAL RAO Regd.No.-1604050018
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- 3. Main objective is to add cyber security to the power system that includes generation, transmission, and distribution, so it can be able to stabilze the frequency reponse after any type of attacks. Figure 1: Electrical Power System
- 4. Increased cyber hacking activities are posing a threat to power systems with high integration of information technologies. Various critical data of power systems were compromised by cyber-attacks during the incident. Large power outages can be difficult and time-consuming to restore, and they can also have disastrous economic and humanitarian consequences. Monitoring is justified by the reduction of fault occurrence of electric power, damage to the equipment, emergency equipment replacement cost. Taking an assumption that an attacker has gained access to one of the power system's components. After its attack how much frequency response is being deviated from the original one.
- 5. Attackers can penetrate the smart grid verbal exchange structures by the use of susceptible entry factors in the logical border surrounding a network. Any type of offence that uses cyberspace for the purpose of disrupting,disabling, destroying any system is basically Cyber Attack. There can be several impacts after cyber attack. So impacts are categorized in two types Economic Impacts Technical Impacts
- 6. Figure 2: Simulink model for two area power system
- 7. Generally cyber-attacks are classified under 3 types : . 01 02 . 03 . Figure 3: Frequency measurement before any type of cyber-attack
- 8. Integrity / Timing Attack Attackers attack with induced delay of 10s. ACEu = ACE + x Here,x = 10 s. (Transport Delay) Figure 4: Frequency measurement under Timing attack
- 9. Template / Scaling Attack Attackers attack in such a way that input signal is scaled into 5 times. ACEu = a ACE Here, a = 5 (Constant Block) Figure 5: Frequency measurement under Template attack
- 10. Random Attack Attackers attack in such a way that input signal is provided by some random values as -1 to 1. (Uniform Random Number Block) Figure 6: Frequency measurement under Random attack
- 11. Pulse Attack Attackers attack in such a way that adds pulsating signal in the input with an amplitude of 5. ACEu = b Here , b = 5 (Continuous Pulse Generator Block) Figure 6: Frequency measurement under Pulse attack
- 12. Time Delay Attack If system is being delayed by 5s then, attackers can change the delay to 105s (Transport Delay). Figure 6: Frequency measurement under Time Delay attack
- 13. Bias Injection Attack Attackers add a bias block to manipulate the waveform. Figure 6: Frequency measurement under Positive bias injection attack Figure 7: Frequency measurement under Negative bias injection attack
- 14. Load Attack Attackers add a gaussian random signal with a variation of 0.1. Figure 6: Frequency measurement under Load attack
- 15. Performed different types of attacks in the two area power system model. Observed that there is a huge frequency deviation for all of the performed attacks. By adding Cyber-Security to this model so that there will be no further deviation of frequency. Then the same method of Cyber-Security will be synced with a microgrid.
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