论文部分内容阅读
提出了一种避免因换流阀阀基电子设备触发脉冲丢失而造成控制保护系统(control and protection,CCP)误动作的控制策略。该策略的核心是同时算法设计,在控制保护系统经过以太网向门级单元(gate unit,GU)发出的触发信号出现脉冲丢失的情况下,VBE检测到回报信号后不做任何处理,根据运行经验和数理统计得出,当检测到连续丢4个周波(80 ms)的脉冲时才向控制保护系统发送请求切换系统信号。基于这种控制策略设计的阀基电子系统已经在实时数字仿真器联调试验中应用,试验结果表明,这种控制策略有效消除了现有保护方法产生的危险现象,避免了系统误动作的概率。
A control strategy was proposed to avoid the malfunction of control and protection (CCP) caused by the loss of the trigger pulse of the valve-based electronic equipment of the converter valve. At the heart of the strategy is the simultaneous algorithm design. Under the condition that the pulse of the triggering signal sent by the protection and protection system to the gate unit (GU) through the Ethernet is lost, VBE detects the return signal without any processing. According to the operation Experience and mathematical statistics show that when a continuous pulse of 4 pulses (80 ms) is detected, a request to switch system signals is sent to the control and protection system. The valve-based electronic system designed based on this control strategy has been applied in real-time digital simulator joint debugging. The experimental results show that this control strategy can effectively eliminate the danger of the existing protection methods and avoid the probability of system malfunction .