Data Object Modeling for Industrial Internet of Things and Its Efficient Implementation in a Cloud Test System for Relay Protection
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24 mar 2025
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Publicado en línea: 24 mar 2025
Recibido: 29 oct 2024
Aceptado: 02 feb 2025
DOI: https://doi.org/10.2478/amns-2025-0779
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© 2025 Xiang Huang et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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Protection of relay protection equipment
| Relay protection equipment | I Protected value (Ω/s) | II Protected value (Ω/s) | III Protected value (Ω/s) |
|---|---|---|---|
| R1 | 32.45/0 | 66.65/1.53 | 75.64/3.68 |
| R2 | 5.98/0 | 28.19/1.22 | 29.95/3.51 |
| R3 | 5.31/0 | 26.48/1.21 | 27.92/3.43 |
| R4 | 2.52/0 | 9.69/1.21 | 9.22/3.42 |
| R5 | 2.43/0 | 9.66/1.23 | 9.18/3.47 |
| R6 | 15.38/0 | 33.31/1.21 | 41.84/3.26 |
| R7 | 18.46/0 | 35.39/1.02 | 45.93/3.21 |
| R8 | 16.42/0 | 32.26/1.05 | 39.61/3.23 |
| R9 | 24.31/0 | 40.03/0.94 | 47.39/3.15 |
| R10 | 28.22/0 | 43.19/0.95 | 43.72/3.16 |
The result of the fixed value check
| Relay protection equipment | Desired mode of operation | Critical value (Ω) | Actual check value (Ω) | Check result |
|---|---|---|---|---|
| R1 | L1 Stop | 115.28 | 62 | Meet the selective demand |
| R2 | C2 Primary stop | 120.42 | 62 | Meet the selective demand |
| R3 | C2 Primary stop | 120.19 | 62 | Meet the selective demand |
| R4 | L7 Hang check | 233.58 | 62 | Meet the selective demand |
| R5 | L9 Hang check | 59.86 | 62 | Match with III line, Mismatch selection |
| R6 | C5 Primary stop | 58.32 | 62 | Match with III line, Mismatch selection |
| R7 | C5 Primary stop | 36.64 | 62 | Match with III line, Mismatch selection |
| R8 | L15 Hang check | 110.35 | 62 | Meet the selective demand |
| R9 | L16 Hang check | 106.57 | 62 | Meet the selective demand |
| R10 | L19 Stop | 88.97 | 62 | Meet the selective demand |
Short circuit current results for different models
| Fault position | Operation mode | Fault phase current/standard value-Before | Fault phase current/standard value-After | Percentage difference (%) | |||
|---|---|---|---|---|---|---|---|
| SPF | TPF | SPF | TPF | SPF | TPF | ||
| BGS | Big | 9.028 | 9.916 | 9.483 | 10.443 | 5.04 | 5.31 |
| Small | 8.746 | 9.585 | 9.176 | 10.089 | 4.92 | 5.26 | |
| JJL | Big | 8.342 | 9.442 | 8.654 | 9.785 | 3.74 | 3.63 |
| Small | 7.813 | 9.037 | 8.084 | 9.283 | 3.47 | 2.72 | |
| DBJ | Big | 13.024 | 13.751 | 13.121 | 13.784 | 0.74 | 0.24 |
| Small | 12.251 | 12.943 | 12.364 | 12.995 | 0.92 | 0.40 | |