| CPC F16K 37/0058 (2013.01) | 10 Claims |
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1. A method for controlling redundancy of a valve control system of a converter valve, wherein the method is applied to a valve control pulse distribution case in the valve control system of the converter valve; the valve control pulse distribution case comprises two switch boards and pulse distribution boards connected to the two switch boards; each pulse distribution board comprises an FPGA and an optical module connected correspondingly with each switch board; a backplane monitoring channel is further arranged between the two switch boards; the backplane monitoring channel is configured to inter-transmit running state information, between the two switch boards, of the FPGAs connected correspondingly with the two switch boards;
the method comprises:
sending an on-duty state and a trigger pulse sent by a valve control main machine and received by two switch boards to the corresponding FPGAs in the pulse distribution boards; wherein the on-duty state comprises an active state and a standby state; a monitoring output channel is arranged between the FPGAs; the monitoring output channel is configured to transmit running state information of the FPGAs; and the valve control main machine and the switch boards of the valve control pulse distribution case adopt a cross communication, wherein an arm control board in the valve control main machine is in cross connection with the switch boards of the valve control pulse distribution case;
for each FPGA:
in a case that the FPGA receives the on-duty state representing the active state: outputting a high-level control signal to a data selector through the FPGA; and controlling an optical emitting module through the FPGA to output a trigger pulse received by the FPGA;
in a case that the FPGA receives the on-duty state representing the standby state: outputting a low-level control signal to the data selector through the FPGA, and maintaining a control signal output state of the FPGA and the other FPGA; wherein the control signal output state is used for representing a type of a control signal outputted by the FPGA; and sending warning information that the FPGA on-duty state is abnormal and control over the optical emitting module is ineffective in a case that the other FPGA also receives the on-duty state representing the standby state; and
in a case that running state information of the other FPGA received by the FPGA through the monitoring output channel is a crash state: outputting a low-level signal to a control port of the other FPGA through the monitoring output channel by the FPGA;
the method further comprises: determining fault grades of different valve control pulse distribution cases; using a valve control pulse distribution case link with a low fault grade as an active case link; using another valve control pulse distribution case link as a standby case link; using a valve control main machine corresponding to the active case link as a target on-duty valve control main machine; sending an on-duty state and a trigger pulse sent by the valve control main machine and received by the two switch boards to the corresponding FPGAs in the pulse distribution boards comprises: sending an on-duty state and a trigger pulse sent by the target on-duty valve control main machine and received by the two switch boards to the corresponding FPGAs in the pulse distribution boards;
wherein the valve control pulse distribution case is connected with an on-duty valve control main machine and a standby valve control main machine; and the method further comprises: receiving an on-duty state and a trigger pulse sent by the standby valve control main machine in a case that the switch boards receive the on-duty state and the trigger pulse sent by the valve control main machine and do not receive an on-duty state and a trigger pulse sent by the on-duty valve control main machine; and
sending the on-duty state representing the standby state through the switch boards in a case that the on-duty states and the trigger pulses sent by both the on-duty valve control main machine and the standby valve control main machine are not received.
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