DC control-protect parameter optimization method realizing AC-DC system coordination recovery

• Main Authors: XUE FENG, ZHU LING, ZHAO XUEMAO, LIU FUSUO, HOU YUQIANG, LI WEI, WANG YU, LUO FENG, ZHANG QIAN, GU XIAOLING, LI ZHAOWEI, WU XUELIAN
• Format: Patent
• Language: Chinese; English
• Published: 02.10.2018
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a DC control-protect parameter optimization method realizing AC-DC system coordination recovery, and belongs to the electric power system and automation technical field; the method comprises the following steps: calculating an effective short circuit ratio of a DC inversion side converter station under a present operation mode; calculating a dynamic recovery capability index of an AC-DC system under a fault in real time according to the DC effective short circuit ratio and an inversion side converter station bus voltage in a transient process; using the index to dynamically calculate DC commutation failure prediction control and low voltage current limiting link key parameters. The method fully considers the influences on the AC-DC recovery capability by the AC system intensity and fault impacts, and sets DC control-protection parameter regulation amplitudes, thus improving the AC-DC system coordination recovery capability while ensuring the DC self control system stability. 本发明公开了种实现交