Online statistical method for abnormal conditions of high-temperature heated surfaces of thermal power plant DCS boilers

• Main Authors: MAO YANHUI, MU FENGKU, ZHANG YUNQING, DENG XIAOPENG, WANG BIN, ZHOU JIAWEI, HE XIAODI, CAI GUANGZHI, ZHAO WENSONG, GE ZHIPENG, WANG JIAN, LU QIANG, CAO HUAN, LI GANG
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2019
• Subjects: BLASTING; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; STEAM BOILERS; STEAM GENERATION; WEAPONS

The invention relates to an online statistical method for the abnormal conditions of the high-temperature heated surfaces of thermal power plant DCS boilers. The method comprises the following steps of (1) collecting field data, and transmitting the data to a DCS real-time database; (2) processing the date, specifically, 1 determining an alarm constant value, and storing the alarm constant value in the DCS real-time database, 2 judging the abnormal conditions of the temperature of pipe walls, namely determining whether the current temperature of the pipe walls is in an over-temperature condition or not, generating Boolean type intermediate variable b, and storing the Boolean type intermediate variable b in the DCS real-time database,3 recording the maximum value of the temperature of the pipe walls in real time, and storing the maximum value in the DCS real-time database; (3) generating a report, specifically generating statistics of the abnormal conditions of the temperature of the pipe walls of all the high