关于陕武工程交流电压故障判别逻辑优化方案的研究

Research on the Logic Optimization Scheme of AC Voltage Fault Judgment in Shanwu Project

针对空气开关断开导致的交流电压故障,为防止阀控采集的交流电压对应的CVT空气开关断开后换流器产生过电流,取消了阀控测量屏柜交流电压空气开关,并增加了CVT空气开关位置信号用于交流电压故障判别优化措施。在硬件方面,阀组测量屏柜取消交流电压进线开关,阀控系统增加CVT空气开关位置信号采集;在软件方面,阀控系统三相交流电压故障判别逻辑关联CVT空气开关位置及交流场开关位置信号。试验结果表明研究所涉及的软件修改的功能具备在现场实施的条件。

Aiming at the AC voltage failure caused by the disconnection of the air switch,in order to prevent the overcurrent generated by the converter after the CVT air switch corresponding to the AC voltage collected by valve control is disconnected,the AC voltage air switch of the valve control measurement panel is cancelled,and the CVT air switch position signal is added to identify and optimize the AC voltage fault.In terms of hardware,the valve group measurement panel cancels the AC voltage inlet switch,and the valve control system adds CVT air switch position signal collection.In terms of software,the valve control system three-phase AC voltage failure judgment logic is related to the CVT air switch position and the AC field switch position signal.The test results show that that the software modification functions involved are correct and have the conditions for on-site implementation.