@Article{ee.2026.081082,
AUTHOR = {Sumei Liu, Jizeng Wu, Yinghong Zhang, Ran Zheng},
TITLE = {A Novel Control-Protection Coordination Strategy of Power Lines Connected with Inverter-Based Resources},
JOURNAL = {Energy Engineering},
VOLUME = {},
YEAR = {},
NUMBER = {},
PAGES = {{pages}},
URL = {http://www.techscience.com/energy/online/detail/26715},
ISSN = {1546-0118},
ABSTRACT = {The unique fault current characteristics of inverter-based resources (IBRs) result in a variable angle of the additional impedance for conventional distance protection, causing failure to operate for internal faults and maloperation for external faults. To address this issue, a novel control-protection coordinated strategy is proposed. The positive-sequence current references of IBRs’ inverter control strategy are reset, based on the relationship between the current on the high-voltage side of the transformer and that of the fault-point current. Under such control, the additional impedance angle can be effectively maintained at a constant value. On this basis, a single-ended protection principle immune to the additional impedance is developed. The proposed control-protection coordinated strategy can effectively identify internal and external faults under high-penetration IBRs integration, without substantially modifying the existing inverter control and protection framework. Compared with existing control-protection coordinated strategies, the proposed improved control strategy will not affect the stability of inverter control, nor will it generate additional harmonics. The proposed protection strategy still adopts conventional power-frequency voltage and current quantities for fault identification, facilitating its implementation.},
DOI = {10.32604/ee.2026.081082}
}