多端柔性直流输电系统的换流站停运控制方法及其装置

• Format: Patent
• Language: Chinese
• Published: 16.11.2016
• 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

本发明实施例公开了种多端柔性直流输电系统的换流站停运控制方法，所述多端柔性直流输电系统包括至少三个换流站，所述换流站采用模块化多电平换流器，单个所述换流站直流侧包括直流电流检测器和至少组隔离闸刀，其交流侧包括相互串联的进线断路器、换流变压器和充电电阻，所述方法包括：切换所需停运换流站的换流变压器中的换流阀至高阻状态；检测所述所需停运换流站的直流侧电流；判断所述所需停运换流站的直流侧电流是否小于预设值；若所述所需停运换流站的直流侧电流小于所述预设值，则断开所述所需停运换流站直流侧的隔离闸刀。达到了停运多端柔性直流输电系统中部分换流站，而不影响其他运行中的换流站的目的。