Patent ID: 11960271
Assignee: KOREA HYDRO & NUCLEAR POWER CO., LTD.
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An apparatus comprising a power plant early warning device for installation in a power plant, the power plant early warning device being configured for determining whether there exist defects in operation states of equipment in the power plant, wherein the power plant early warning device comprises a signal measurement unit that receives monitoring signals that are related to operating states of equipment in the power plant, the operating states including one of pressure, temperature, and flow data, the signals being analog signals, wherein the signal measurement unit is attached to the equipment in the power plant to measure and transmit operating states of the equipment during each of a plurality of transmission intervals and wherein the signal measurement unit carries out analog-to-digital conversion to transmit a digital signal, wherein the power plant early warning device is configured to receive information on operating states of equipment of a power plant from the signal measurement unit and to output at least three prediction values and at least three reliabilities, each of which corresponds to one of the prediction values, to quantify and analyze the reliabilities to determine at least three ranks, each of which corresponds to one of the three prediction values, to calculate a final prediction value by applying weights according to the ranks of the prediction values, to compare the final prediction value with an actual measurement value provided by the signal measurement unit, to output a residual, to analyze the residual to determine whether a defect exists in an operating state of the equipment of the power plant, and to cause a warning to occur when the residual is outside of a normal range.