A heat exchange station system optimization control method
A control method and system optimization technology, applied in heating systems, heating methods, household heating, etc., can solve the problems of unutilized user free heat, large indoor temperature fluctuations, and large indoor temperature fluctuations.
Active Publication Date: 2019-11-19
沈阳久沃能源科技有限公司
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Problems solved by technology
The existing problems are: 1) The thermal characteristics of each heat exchange station are not compensated in the control system; 2) The power consumption cannot be reduced by changing the circulation flow; 3) The free heat of the user is not utilized; 4) The indoor temperature fluctuates greatly;
The disadvantages are: 1) The control system does not perform indoor free heat compensation; 2) The indoor temperature fluctuates relatively large; 3) It is difficult to obtain the average temperature setting index of the secondary network;
Its disadvantages are: 1) large temperature difference may lead to more serious hydraulic imbalance of the secondary network; 2) no consideration of the qualitative component of the heat (average temperature of the secondary network, directly related to the indoor temperature value); 3) no consideration of free heat 4) The indoor temperature fluctuates greatly; 5) It is necessary to determine the temperature difference setting value according to the actual user properties, design parameters and terminal devices;
Method used
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Embodiment Construction
[0224] The present invention provides a heat exchange station system optimization control method, which includes the following steps:
[0225] 1), get the basic information of the heat exchange station
[0226] The basic information of the heat exchange station is as follows:
[0227] Actual heating area of heat exchange station (F, m 2 ), design outdoor temperature (Tod, ℃), design indoor temperature (Tzd, ℃), design primary network circulation flow (G1d, T / h), design secondary network circulation flow (G2d, T / h), design primary network Water supply temperature (Ts1d, ℃), design primary network return water temperature (Tr1d, ℃), design secondary network water supply temperature (Ts2d, ℃), design secondary network return water temperature (Tr2d, ℃), secondary network circulating water pump Motor efficiency curve, secondary network circulating water pump efficiency curve, heat transfer coefficient calculation coefficient (cht) in the end heat sink;
[0228] 2), obtain the measured ...
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The invention discloses a heat exchange station system optimization control method. The method includes the following steps that basic information of a heat exchange station is obtained; actual measured data of the heat exchange station are obtained; system operational analysis is performed according to the actual measured data and includes the system timing sequence analysis and temperature sequence analysis; system characteristic parameter calculation is performed and includes system operational characteristic and inherent characteristic calculation; a system dynamic mathematical model is established according to obtained system characteristics; system setup parameters are obtained through an open loop experiment of the dynamic mathematical model; and on the basis of the established dynamic mathematical model of a heat supply system, outdoor temperature compensation control strategy simulation is performed, and the optimization characteristics of the heat exchange station are clarified.
Description
Technical field [0001] The invention relates to the technical field of heat exchange station control, in particular to an optimized control method for a heat exchange station system. Background technique [0002] Due to the promotion and influence of various factors (urbanization rate and environmental protection requirements, etc.), the scale of the district heating system has gradually expanded in the past 20 years. The largest multi-source common network system is close to hundreds of millions of square meters, and there are nearly a thousand heat exchange stations. Many heat exchange stations have also achieved an unattended state; observing and analyzing the historical data of the heat exchange station will find that the heat output of the heat exchange station does not meet the thermal and hydraulic balance goals of the heating network. For example, some heat exchange stations control the return water temperature of the secondary network, but the return water temperature is...
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IPC IPC(8): F24D19/10
CPCF24D19/1009
Inventor 赵庆亮张博航冯文宝
Owner 沈阳久沃能源科技有限公司