ZHANG Haiqiang,DAI Wenrui,MOU Dalin,et al.Adaptability analysis and optimization scheme for HVDC converter station protection[J].Electric Power Automation Equipment,2019,39(09):102-108.
ZHANG Haiqiang,DAI Wenrui,MOU Dalin,et al.Adaptability analysis and optimization scheme for HVDC converter station protection[J].Electric Power Automation Equipment,2019,39(09):102-108.DOI: 10.16081/j.epae.201909022.
Adaptability analysis and optimization scheme for HVDC converter station protection
In order to prevent malfunction of HVDC converter station protection under out-zone faults,the adaptability of converter station protection is analyzed,and an optimization scheme of protection without affecting its speed and sensitivity is proposed. The minimum amplitude integration ratio of voltage forward and backward traveling wave is used to construct the identification criterion of in- and out-zone faults of inverter station,and an anti-malfunction strategy of inverter station protection under out-zone faults is designed considering the temporal coordination of inverter station protection and out-zone AC system protection. The simulative results based on PSCAD/EMTDC show that the proposed scheme is not affected by fault location,fault type,initial fault angle,transition resistance and noise.
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