Operation Risk Assessment of Urban Dense Cable Passageway Based on Fuzzy-Analytic Hierarchy Process
Abstract
:1. Introduction
2. Operational Risk Parameters for Urban Dense Cable Corridors
2.1. Cable Body Risk Parameters
2.1.1. Overheating of Cables
2.1.2. Ageing of Cables and Accessories
2.1.3. Overloaded Operation
2.1.4. Mechanical Damage
2.1.5. Grounding Issues
2.1.6. Chemical Corrosion Factors
2.2. Cable Channel Risk Parameters
2.2.1. Blocked or Poorly Ventilated Passageways
2.2.2. Cable Channel Overcapacity
2.2.3. High–Medium and Low-Voltage Laying in the Same Channel
2.2.4. Irregular Cable Laying
2.2.5. Defective Access Facilities
2.2.6. Fire Hazard
2.3. Risk Parameters for the Environment Outside the Cableway
2.3.1. Proximity to Oil and Gas Pipelines
2.3.2. Groundwater Level and Humidity
2.3.3. Risk of External Damage
2.3.4. Improper Maintenance
2.3.5. Transportation and Building Construction
2.3.6. Urban Climatic Conditions
3. Operational Risk Assessment Methodology for Urban Dense Cable Corridors
- Important customers, subject to the issuance of each unit;
- Important locations, substation cable trenches, or cable trenches within 10 m of dangerous goods (such as oil depots, gas pipelines, etc.);
- Greater than or equal to 10 returns in the distribution cable pathway.
- 1.
- Risk assessment criteria for common lines:
- 2.
- Risk assessment criteria for critical lines:
4. Calculation Results and Analysis
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Scale Value | Sense |
---|---|
1 | Risk assessment element i is as important as j |
3 | Risk assessment element i is slightly more important than j |
5 | Risk assessment element i is more strongly important than j |
7 | Risk assessment element i is strongly more important than j |
9 | Risk assessment element i is extremely important compared to j |
2, 4, 6, 8 | Intermediate values of the above adjacent judgments |
The inverse of 1~9 | If the ratio of the importance of risk assessment element i to element j is aij, then the ratio of the importance of element j to element i is 1/aij |
n | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
---|---|---|---|---|---|---|---|---|---|
RI | 0 | 0 | 0.58 | 0.90 | 1.12 | 1.24 | 1.32 | 1.41 | 1.45 |
Judgment Matrix | Maximum Eigenvalue | CI | CR | Calibration Result |
---|---|---|---|---|
A1 | 3.0037 | 0.0018 | 0.0032 | Pass |
A2 | 6.1225 | 0.0245 | 0.0198 | Pass |
A3 | 6.3358 | 0.0672 | 0.0542 | Pass |
A4 | 6.2546 | 0.0509 | 0.0411 | Pass |
Standardized Layer | Indicator Layer | Low Risk | Average Risk | Medium Risk | High Risk |
---|---|---|---|---|---|
Cable body risk parameters | Overheating of cables | 0.4 | 0.3 | 0.1 | 0.2 |
Ageing of cables and accessories | 0.3 | 0.4 | 0.1 | 0.2 | |
Overloaded operation | 0.2 | 0.3 | 0.3 | 0.2 | |
Mechanical damage | 0.2 | 0.1 | 0.4 | 0.3 | |
Grounding issues | 0.5 | 0.3 | 0.1 | 0.1 | |
Chemical corrosion factors | 0.2 | 0.1 | 0.3 | 0.4 | |
Cable channel risk parameters | Blocked or poorly ventilated passageways | 0.1 | 0.3 | 0.4 | 0.2 |
Cable channel overcapacity | 0.1 | 0.3 | 0.4 | 0.2 | |
High and low voltage with channel laying | 0.1 | 0.2 | 0.2 | 0.5 | |
Irregular cable laying | 0.4 | 0.3 | 0.2 | 0.1 | |
Defective access facilities | 0.2 | 0.4 | 0.3 | 0.1 | |
Fire hazard | 0.2 | 0.3 | 0.4 | 0.1 | |
Risk parameters for the environment outside the cableway | Proximity to oil and gas pipelines | 0.3 | 0.4 | 0.2 | 0.1 |
Groundwater level and humidity | 0.1 | 0.1 | 0.3 | 0.5 | |
Risk of external damage | 0.1 | 0.2 | 0.3 | 0.4 | |
Improper maintenance | 0.5 | 0.2 | 0.2 | 0.1 | |
Transportation and building construction | 0.2 | 0.3 | 0.2 | 0.3 | |
Urban climatic conditions | 0.4 | 0.2 | 0.2 | 0.2 |
Standardized Layer | Indicator Layer | Weight Value |
---|---|---|
Cable body risk parameters | Overheating of cables | 0.1456 |
Ageing of cables and accessories | 0.0928 | |
Overloaded operation | 0.2224 | |
Mechanical damage | 0.0585 | |
Grounding issues | 0.0373 | |
Chemical corrosion factors | 0.0249 | |
Cable channel risk parameters | Blocked or poorly ventilated passageways | 0.0462 |
Cable channel overcapacity | 0.0994 | |
High and low voltage with channel laying | 0.0166 | |
Irregular cable laying | 0.0279 | |
Defective access facilities | 0.0090 | |
Fire hazard | 0.1098 | |
Risk parameters for the environment outside the cableway | Proximity to oil and gas pipelines | 0.0496 |
Groundwater level and humidity | 0.0096 | |
Risk of external damage | 0.0230 | |
Improper maintenance | 0.0185 | |
Transportation and building construction | 0.0050 | |
Urban climatic conditions | 0.0039 |
Indicator Layer | Channel 1 | Channel 2 | Channel 3 | Channel 4 | Channel 5 |
---|---|---|---|---|---|
Overheating of cables | 1 | 0 | 1 | 0 | 0 |
Ageing of cables and accessories | 0 | 0 | 0 | 1 | 1 |
Overloaded operation | 1 | 0 | 0 | 0 | 0 |
Mechanical damage | 0 | 1 | 0 | 0 | 0 |
Grounding issues | 0 | 0 | 0 | 0 | 0 |
Chemical corrosion factors | 0 | 0 | 0 | 0 | 1 |
Blocked or poorly ventilated passageways | 0 | 0 | 1 | 0 | 0 |
Cable channel overcapacity | 0 | 1 | 0 | 0 | 0 |
High and low voltage with channel laying | 0 | 1 | 0 | 0 | 0 |
Irregular cable laying | 0 | 0 | 1 | 0 | 0 |
Defective access facilities | 1 | 0 | 0 | 0 | 0 |
Fire hazard | 0 | 0 | 1 | 0 | 1 |
Proximity to oil and gas pipelines | 0 | 0 | 1 | 0 | 0 |
Groundwater level and humidity | 0 | 0 | 0 | 1 | 0 |
Risk of external damage | 1 | 1 | 0 | 0 | 0 |
Improper maintenance | 0 | 0 | 0 | 0 | 1 |
Transportation and building construction | 0 | 0 | 1 | 0 | 0 |
Urban climatic conditions | 0 | 0 | 0 | 0 | 0 |
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Nie, Y.; Chen, D.; Zheng, S.; Xu, X.; Wang, X.; Wu, Z. Operation Risk Assessment of Urban Dense Cable Passageway Based on Fuzzy-Analytic Hierarchy Process. Appl. Sci. 2024, 14, 11904. https://doi.org/10.3390/app142411904
Nie Y, Chen D, Zheng S, Xu X, Wang X, Wu Z. Operation Risk Assessment of Urban Dense Cable Passageway Based on Fuzzy-Analytic Hierarchy Process. Applied Sciences. 2024; 14(24):11904. https://doi.org/10.3390/app142411904
Chicago/Turabian StyleNie, Yongjie, Daoyuan Chen, Shuai Zheng, Xiaowei Xu, Xilian Wang, and Zhensheng Wu. 2024. "Operation Risk Assessment of Urban Dense Cable Passageway Based on Fuzzy-Analytic Hierarchy Process" Applied Sciences 14, no. 24: 11904. https://doi.org/10.3390/app142411904
APA StyleNie, Y., Chen, D., Zheng, S., Xu, X., Wang, X., & Wu, Z. (2024). Operation Risk Assessment of Urban Dense Cable Passageway Based on Fuzzy-Analytic Hierarchy Process. Applied Sciences, 14(24), 11904. https://doi.org/10.3390/app142411904