The fault recorder can accurately record and diversify the analysis interface for the data generation time of the system, track the occurrence time of voltage abnormality and the abnormal conditions in the power grid system before and after, and then carry out analysis to find out the root cause of voltage abnormality.

        We all know that in the power system of the power grid, the shorter the fault process, the better. The shorter the fault generation time, the smaller the impact on other equipment, and the more beneficial to the safe operation of the whole power grid. But now we can't completely avoid faults. Some faults occur for a short time. Before we have time to operate, the fault is over. We also need to solve and analyze the causes of such faults.

        In the power system, any fault can not be despised, because it is a hidden danger all the time. Once the fault becomes serious, it will cause irreparable losses.

        The fault recorder connects the power systems of many power plants and substations. When an accident occurs, the relay protection device acts, sometimes jumping off one or several lines, and sometimes cutting off the generator set of a power plant, which may even cause the collapse of the regional system. With the fault recording device, from the electrical quantity change curve of the oscillogram, we can clearly understand the operation of the system, quickly identify the cause of the accident, deal with the accident timely and correctly, quickly restore the power supply and shorten the power failure time.