Load commutation inverter overvoltage control system and method

Abstract

The invention provides a load commutation inverter overvoltage control system and method, and relates to the technical field of steel production. The system comprises a voltage detector and a rolling line control adjustment platform connected with the voltage detector, wherein the rolling line control and adjustment platform comprises a computing device, a voltage acquisition unit, a voltage comparison unit and a load commutation inverter optical fiber contact tightness adjustment unit. According to the invention, the fault-free voltage value of a load commutation inverter is obtained, the voltage value of the load commutation inverter in the operation process is collected in real time, the currently-collected voltage value of the load commutation inverter in the operation process is compared with the fault-free voltage value of the load commutation inverter, the fault-free voltage value difference value is calculated, and the optical fiber contact tightness of the load commutation inverter is adjusted according to the fault-free voltage value difference value, so that the bottleneck problem of equipment faults caused by overvoltage of the load commutation inverter can be rapidly and accurately controlled in real time, finish rolling tripping caused by too high motor voltage is prevented, and the production operation rate is greatly improved.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a control system and method for overvoltage of a load commutation inverter. Background technique [0002] In steel rolling mills, the power components of the LCI drive system for finishing rolling often cause "actual value acquisition" failures due to too high motor voltage, resulting in tripping of finishing rolling, which in turn leads to flying steel at the laying machine, increasing the risk of safety protection, and Containing steel and stacking steel resulted, which greatly reduced the production operation rate; [0003] When this fault occurs, sometimes it is enough to reset, sometimes it needs to be dealt with by power failure, and sometimes replugging and resetting the corresponding optical fiber plug can solve the problem, but this problem has not been completely solved, it always occurs repeatedly, and every time Both lead to heavy fault tripping of ...

AI Technical Summary

Problems solved by technology

[0002]In the steel rolling mill, the power components of the LCI transmission system of the finishing rolling often cause the "actual value acquisition" fault due to the high motor voltage, which leads to the tripping of the finishing rolling, which in turn leads to vomiting Flying steel at the wire machine increases the risk of safety protection, and causes steel and stacked steel, which greatly reduces the production rate;

[0003]When this fault occurs, sometimes it is enough to reset, sometimes it needs to be dealt with by power failure, and sometimes it can solve the problem by replugging and resetting the corresponding optical fiber plug, but this The problem has not been completely solved, and it always occurs repeatedly, and every time it causes the LCI transmission system of the finishing rolling to report a heavy fault and trip, which seriously affects the normal production rhythm. Therefore, the present invention proposes a load commutation inverter overvoltage control system and method to solve the problems existing in the prior art

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