RUNBACK control method for the auxiliary units of thermal power generators based on distributed heat value correction

• Main Authors: HE YUSHENG, ZHU JIFENG, FANG XIAOMAN, YAN FEI, ZHENG SHUIMING, DAI MINMIN, CHEN TONGQIAN, YANG KANG, DONG LEI, ZHONG WENJING, MENG QIANG, LU LU, YANG ZHAN, ZHENG WEIJIAN, LI ENCHANG
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention relates to the field of coal-fired power generation, in particular to a RUNBACK control method for the auxiliary units of thermal power units generators based on distributed heat value correction. In view of the fact that the output of the coal mill is insufficient after the RUNBACK action of the auxiliary unit of the coal blending operation, and does not match with the target valueof the unit RUNBACK, the present invention provides a RUNBACK control method for the auxiliary unit of the thermal power unit based on the dispersion heat value correction. Specifically, the blended coal is converted into the designed coal type equivalent according to the calorific value, and the actual loading capacity of each coal mill is calculated, and the total fuel capacity is obtained by adding the loading capacity of each coal mill to the corresponding coal volume of the fuel flow. Then, the polyline function of the original logic design is converted into fuel load capacity, and the new auxiliary machine RUNBA