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西北-华中联网灵宝背靠背扩建工程的额定直流电流等级是目前世界上最高的。该工程系统调试时多次出现AREVA阀基电子设备VBE“结温过高跳闸”事件。笔者分析了该事件的原因,得出该工程VBE“结温过高跳闸”事件不是换流阀冷却系统问题,而是AREVA阀基电子设备结温保护判据部分设计不合理。建议取消VBE这部分重复功能,或者调整保护定值,并对它的申请只做后台记录,而不去执行操作,作为备用。
Northwest - Huazhong networking Lingbao back to back extension rated DC current rating is the highest in the world. Several times during the commissioning of the engineering system AREVA valve-based electronic equipment VBE “junction temperature is too high trip ” event. The author analyzed the cause of the incident and concluded that the project VBE “junction temperature is too high trip ” is not the problem of the valve cooling system, but rather AREVA valve-based electronic equipment junction temperature protection criteria part of the design is not reasonable. Proposed to cancel this part of VBE repeat function, or adjust the protection of the value, and its application only backstage records, rather than to perform the operation, as a backup.