An Analytic Method for Power System Fault Diagnosis Employing Topology Description
Abstract
:1. Introduction
- (1)
- Based on the incident matrix, the topology description of the power system is established to represent the correlation between the sections and the protective devices, and the expected states of the protection devices can be analyzed by simple matrix operations.
- (2)
- Considering both the operating logic error and the communication error of the protective devices, the improved objective function of the analytic model is constructed, which can adapt to power systems with different structure or connections.
- (3)
- The optimized solution can distinguish the true hypothesis from the false ones with better fault tolerance, and the diagnosis result is helpful to evaluate the abnormal operation of protective device and the communication error of alarm signals.
2. Topology Analyses of Power System
2.1. Topology Description of Power System
2.2. Expected States of the Protective Devices
3. The Analytic Model for Fault Diagnosis Employing Topology Description
3.1. Objective Function of the Analytic Model
3.2. Determination of the Corrective Matrices
3.3. Adaptability to Special Sections and Connection Modes
3.4. Framework of the Fault Diagnosis Method
4. Case Studies
4.1. Test System #1
4.2. Test System 2
5. Discussion
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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NO. | Received Alarms | Fault Diagnosis Result | ||
---|---|---|---|---|
Fault Section | Evaluation | |||
1 | B13m, CB1312, CB1306, CB1314 | 0 | B13 | Normal |
2 | B13m, L1413p, CB1312, CB1306, CB1314 | 0.4 | B13 | L1413p (misreported) |
3 | B07m, L1011m, L0611s, CB0704, CB0709, CB0708, CB1011, CB0611 | 0 | B07 L1110 | L1110m (failed to operate) L1110p (failed to operate) |
4 | B07m, B10m, L1110s, CB0704, CB0709, CB0708, CB1110, CB1009, CB1106 | 1.2 | B07 B10 | CB1011 (failed to operate) CB1106 (mal-operated) |
5 | B11m, L0204m, L0402m, L1011s, CB1106, CB1011, CB0204, CB0402 | 0.6 | B11 L0204 | CB1110 (failed to operate) |
6 | L1011m, L1110m, B14m, L1314s, CB1011, CB1409, CB1314 | 1.0 | B14 L1110 | CB1110 (alarm missing) CB1413 (failed to operate) |
NO. | Received Alarms | Fault Section of | Diagnosis Result of This Paper | ||
---|---|---|---|---|---|
[28] | [34] | Fault section | Evaluation | ||
1 | B1m, L2Rs, L4Rs, L7Sm, CB4, CB5, CB7, CB9, CB12, CB27, CB29 | B1 | B1 | B1 | CB6 (failed to operate) L7Sm (mal-operated) |
2 | T3p, L7Sp, L7Rp, CB14, CB16, CB29, CB39 | T3 L7 | T3 L7 | T3 L7 | L7Sm (failed to operate) L7Rm (failed to operate) |
3 | B1m, B4m, L1Sp, L1Rm, CB4, CB5, CB6, CB7, CB9, CB11 | L1 B1 B4 | L1 B1 | L1 B1 | L1Sm (failed to operate) B4m (misreported) |
4 | B2m, L1Sm, L1Rp, L2Rm, L2Sp, CB4, CB5, CB6, CB7, CB8, CB9, CB10, CB11, CB12 | B2 L1 L2 | B1 B2 L1 L2 | B1 B2 L1 L2 | B1m (alarm missing) L1Rm (failed to operate) L2Sm (failed to operate) |
5 | L1Sm, L1Rp, L2Sp, L2Rp, L7Sp, L7Rm, L8Rm, CB7, CB8, CB11, CB12, CB29, CB30, CB39, CB40 | L1 L2 L7 | L1 L2 L7 L8 | L1 L2 L7 L8 | L1Rm (failed to operate) L2Sm (failed to operate) L2Rm (failed to operate) L7Sm (failed to operate) L8Sm (alarm missing) |
6 | T7m, T8p, B7m, B8m, L5Sm, L5Rm, L8Sp, L8Rm, CB19, CB20, CB29, CB30, CB32, CB33, CB34, CB35, CB36, CB37, CB40 | L5 L8 B7 T7 T8 | L5 L8 B7 B8 T7 T8 | L5 L8 B7 B8 T7 T8 | T8m (failed to operate) L8Sm (failed to operate) CB31 (failed to operate) CB39 (failed to operate) L6Ss (alarm missing) L7Ss (alarm missing) |
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Xu, B.; Yin, X.; Wu, D.; Pang, S.; Wang, Y. An Analytic Method for Power System Fault Diagnosis Employing Topology Description. Energies 2019, 12, 1770. https://doi.org/10.3390/en12091770
Xu B, Yin X, Wu D, Pang S, Wang Y. An Analytic Method for Power System Fault Diagnosis Employing Topology Description. Energies. 2019; 12(9):1770. https://doi.org/10.3390/en12091770
Chicago/Turabian StyleXu, Biao, Xianggen Yin, Dali Wu, Shuai Pang, and Yikai Wang. 2019. "An Analytic Method for Power System Fault Diagnosis Employing Topology Description" Energies 12, no. 9: 1770. https://doi.org/10.3390/en12091770