Online matching and adjusting method for heat supply quantity and heat demand quantity of district heat supply system

Abstract

The invention discloses an online matching and adjusting method for the heat supply quantity and the heat demand quantity of a district heat supply system. The online matching and adjusting method comprising the steps of inputting preset parameters, collecting operation parameters in real time, dynamically adjusting room temperatures of buildings, judging whether the buildings participate in calculation or not, calculating adjusting factors in real time, calculating water supply temperature-manifold pressure difference in real time and adjusting the water supply temperature-manifold pressure difference in real time, wherein the preset parameters comprise an outdoor design temperature T'out, an indoor set temperature Tin-set, j and the like; the operation parameters comprise the temperature Tin, i, j of the ith temperature measurement point of the jth building and the like; building room temperature dynamic adjustment takes a heat supply area weighted temperature Tin, j as a control target; whether the buildings participate in adjustment calculation or not is judged on the basis of the opening degree of an electric control valve of a water return pipe; adjusting factor real-time calculation comprises a comprehensive room temperature correction factor and the like; and on the basis, a water supply temperature-manifold pressure difference adjusting equation is dynamically calculated, and a primary side electric adjusting valve and a secondary side circulating pump of a heat exchange station are adjusted. The method can effectively improve the matching degree of the heat supply quantity and the heat demand quantity of the district heat supply system.

Description

technical field [0001] The invention relates to district heating technology, in particular to an online matching adjustment method for heat supply and heat demand of a district heating system. [0002] technical background [0003] At present, my country is the world's largest carbon emitter and will reach the peak of carbon emission in 2030. Coal combustion in urban district heating systems in northern my country is an important factor causing the growth of carbon emissions. Generally speaking, the heat generated in the heat source needs to be sequentially transferred to the radiators in the building through the multi-stage pipe network and multi-stage heat exchange stations for space heating. The heat source, front-stage pipe network and front-stage heat exchange station are usually managed by the heat supply company, while the final pipe network and final heat exchange station directly connected to the building are usually managed by the building property company. Compar...

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Problems solved by technology

[0005] In view of the problem that the heat supply and heat demand of the district heating system are not well matched, the purpose of the present invention is to provide an online matching adjustment method for the heat supply and heat demand of the district heating system. The weighted temperature of the heat area and the opening of the electric control valve of the return pipe take into account the difference between the actual heating parameters of the building and the design heating parameters, and integrate dynamic feedback to the heat supply adjustment equation on the side of the heat exchange station, which can effectively improve the district heating system. Matching degree of heat supply and heat demand

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