Localized Sequential Component Selection and Matching Scheme Based on Control Protection Collaboration
To solve the problem of failure of photovoltaic phase selection element in grid-connected systems, this paper proposes a phase selection capability recovery scheme for phase selection element based on control and protection coordination. The key condition for restoring the phase-selective capability...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10517605/ |
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| Summary: | To solve the problem of failure of photovoltaic phase selection element in grid-connected systems, this paper proposes a phase selection capability recovery scheme for phase selection element based on control and protection coordination. The key condition for restoring the phase-selective capability is to utilize the inverter power supply to adjust the positive and negative-sequence current distribution factors. Through theoretical analysis, load and energy storage are utilized to adjust the above two values to the same, which in turn achieves the correct action of relay protection on the PV storage side. The simulation results based on the PSCAD/EMTDC model show that the control strategy proposed in this paper can effectively restore the phase selection ability of the phase selection element under various complex fault conditions, and has high sensitivity. |
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| ISSN: | 2169-3536 |