Data Object Modeling for Industrial Internet of Things and Its Efficient Implementation in a Cloud Test System for Relay Protection
, , et
24 mars 2025
À propos de cet article
Publié en ligne: 24 mars 2025
Reçu: 29 oct. 2024
Accepté: 02 févr. 2025
DOI: https://doi.org/10.2478/amns-2025-0779
Mots clés
© 2025 Xiang Huang et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
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 | |