Dynamic Load Redistribution of Power CPS Based on Comprehensive Index of Coupling Node Pairs
Abstract
:1. Introduction
- (1)
- The integrated importance and vulnerability indexes of node pairs are established by combining the functional characteristics of the system.
- (2)
- Based on the update of indicators, dynamic load redistribution of information flow and power flow of failed nodes is carried out in the process of cascading failure, so that the fault can be terminated quickly.
2. The Comprehensive Characteristics of the Coupling Node Pair
2.1. Active-Business Degree Index
2.2. Node Pair Utilization Index
3. Power CPS Risk Propagation Considering Load Redistribution
3.1. Initial Load and Capacity of CPS Nodes
3.1.1. Power Side
3.1.2. Cyber Side
3.2. Subnetwork Load Reallocation
3.2.1. Cyber Network Load Reallocation
- (1)
- The first round of redistribution on the information side
- (2)
- The second round of redistribution on the information side
- (1)
- Normal state, can operate normally;
- (2)
- In the overload state, but not exceeding the capacity, it can maintain normal operation in the short term, but it needs to be processed as soon as possible;
- (3)
- Exceeding the maximum capacity and being in a failed state requires a new round of load redistribution.
3.2.2. Power Grid Load Redistribution
- (1)
- The first round of redistribution on the power side
- (2)
- The second round of redistribution on the power side
3.3. System Survivability Assessment
4. Simulation Analysis
4.1. Initial Topology of Bilateral Subnetwork
4.2. Establishment of Comprehensive Indexes
4.3. Node Survival Rate under Different Attack Methods
4.3.1. High-Degree Nodes Attacks
4.3.2. High-Load Nodes Attack
4.4. Parameter Analysis
4.4.1. Different Topologies
4.4.2. Different Load Adjustable Parameters
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References and Note
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Security Zone | Score | Risk Levels |
---|---|---|
I | 4 | High |
II | 3 | Medium |
III | 4 | High |
IV | 2 | Low |
Line | From-Node | To-Node |
---|---|---|
1 | 1 | 2 |
2 | 1 | 3 |
3 | 2 | 4 |
4 | 3 | 4 |
5 | 2 | 5 |
6 | 2 | 6 |
7 | 4 | 6 |
8 | 5 | 7 |
Node of Cyber-Side | Node of Power-Side | Node of Cyber-Side | Node of Power-Side |
---|---|---|---|
1 | 19 | 16 | 11 |
2 | 28 | 17 | 18 |
3 | 27 | 18 | 17 |
4 | 10 | 19 | 9 |
5 | 6 | 20 | 13 |
6 | 12 | 21 | 14 |
7 | 22 | 22 | 21 |
8 | 2 | 23 | 26 |
9 | 20 | 24 | 29 |
10 | 4 | 25 | 30 |
11 | 15 | 26 | 1 |
12 | 23 | 27 | 5 |
13 | 8 | 28 | 3 |
14 | 24 | 29 | 7 |
15 | 25 | 30 | 16 |
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Wang, Y.; Dong, J.; Zhao, J.; Qu, Z.; Huang, J. Dynamic Load Redistribution of Power CPS Based on Comprehensive Index of Coupling Node Pairs. Processes 2022, 10, 1937. https://0-doi-org.brum.beds.ac.uk/10.3390/pr10101937
Wang Y, Dong J, Zhao J, Qu Z, Huang J. Dynamic Load Redistribution of Power CPS Based on Comprehensive Index of Coupling Node Pairs. Processes. 2022; 10(10):1937. https://0-doi-org.brum.beds.ac.uk/10.3390/pr10101937
Chicago/Turabian StyleWang, Yunjing, Jie Dong, Jianjun Zhao, Zhengwei Qu, and Jinyi Huang. 2022. "Dynamic Load Redistribution of Power CPS Based on Comprehensive Index of Coupling Node Pairs" Processes 10, no. 10: 1937. https://0-doi-org.brum.beds.ac.uk/10.3390/pr10101937