Control and adjustment system and method under combined heat supply mode of plant-level thermal power units

Abstract

The invention provides a control and adjustment system and method under the joint heating mode of multiple units at the factory level, which belongs to the technical field of heating unit control. After the return water temperature is calibrated, it is added to the set value of the water supply temperature to obtain the first Calculated value; compare the first calculated value with the water supply temperature, and perform proportional integral calculation according to the obtained numerical deviation state to obtain the second calculated value; convert the first calculated value through the feedforward function to obtain the feedforward value; Accumulate the second calculated value and the feed-forward value to obtain the third calculated value; carry out the balance calculation of the third calculated value and the average value of the adjustment command under the joint control of multiple units to obtain the balance adjustment command; track the temperature of each heating unit The status data flow of the handheld device, and send the balance adjustment command to the handheld device of the heating unit in the automatic control state. The invention automatically corrects the setting of the water supply temperature and sends it to the controller, reduces the loss of the heating network, and realizes energy saving and emission reduction.

Description

technical field [0001] The invention relates to the technical field of thermal power unit heat supply regulation, in particular to a control and regulation system and method in a plant-level multi-unit joint heat supply mode. Background technique [0002] In recent years, with the continuous advancement of urbanization, the heating area of ​​northern residents has continued to increase. At present, most of the direct regulation units in the power grid are heating units. The heating units are limited by the lack of flexible adjustment capacity of heat load demand. At the same time, the installed capacity of new energy continues to grow, and the characteristics of new energy power generation require conventional units to participate in grid regulation and absorb new energy. [0003] There are generally two or more heating units in a power plant. When multiple units participate in the regulation, if most of them are manually adjusted or the automatic adjustment parameters are n...

AI Technical Summary

Problems solved by technology

[0003] There are generally two or more heating units in a power plant. When multiple units participate in the regulation, if most of them are manually adjusted or the automatic adjustment parameters are not matched properly, the heating control will not be timely; when participating in peak regulation, the minimum heating unit is required When the quantity is large, the adjustment between units needs to be timely and fast

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