The invention discloses a control method and system of a central air conditioning system, equipment and a storage medium. The system optimization parameters are obtained, the system optimization parameters are fed back to the water chilling unit control step, the refrigeration water pump control step, the cooling water pump control step and the cooling tower control step to realize the control ofthe central air conditioning system, the lowest comprehensive energy consumption and the highest comprehensive energy efficiency of the system are achieved, and the technical problem of the poor overall energy saving effect of an existing air conditioning control system is overcome.

Control method and system of central air conditioning system, equipment and storage medium

The invention provides a construction method for an energy consumption model of an existing building air conditioner. The construction method comprises the steps of acquiring the energy consumption ofthe building air conditioner, the indoor and outdoor dry-bulb temperature, the solar radiation amount, the indoor and outdoor relative humidity and the rated power of each heating device in a building; calculating the energy consumption of a building envelope according to the outdoor dry-bulb temperature, the indoor dry-bulb temperature and the solar radiation amount; calculating the total energyconsumption of the internal disturbance of fresh air according to the energy consumption of the building air conditioner and the energy consumption of the building envelope; calculating the per-capita fresh air volume of the energy consumption model of the building air conditioner, the number of persons and the coefficients of performance of illumination and equipment according to the total energy consumption of the internal disturbance of the fresh air, the indoor and outdoor dry-bulb temperature, the indoor and outdoor relative humidity and the rated power of each heating device in the building; determining the energy consumption model of the existing building air conditioner according to the per-capita fresh air volume, the number of the persons and the coefficients of performance of the illumination and the equipment. The invention further discloses an energy consumption prediction method for the existing building air conditioner utilizing the constructed energy consumption modelof the existing building air conditioner. The construction method and the energy consumption prediction method have the advantage that the air conditioning load predicted by using the model is closerto the actual air conditioning load of a building.

Construction method for energy consumption model of existing building air conditioner and energy consumption prediction method for air conditioner

The invention relates to a control optimization method and device of an air-conditioning system, computer equipment and a storage medium. The method includes the steps that an air-conditioner simulation model is established, and a candidate control scheme is obtained; simulation run energy consumption is obtained, wherein the simulation run energy consumption is run energy consumption generated when the air-conditioner simulation model simulates the air-conditioning system to run according to the candidate control scheme; and the candidate control scheme of the air-conditioning system is determined to be an energy-saving control scheme according to the simulation run energy consumption. By means of the method, the problem that a debugging period is long when the energy-saving control scheme of an existing centralized air-conditioning system is determined can be solved.

Control optimization method and device of air-conditioning system, computer equipment and storage medium

The embodiment of the invention discloses a control method and a control device for a water chilling unit. The method comprises the concrete implementation steps of according to an operating conditionof the water chilling unit, acquiring actual operating data and a total load of the water chilling unit; according to the actual operating data, determining operating parameters of a cooling machinein the water chilling unit; according to the operating parameters of the cooling machine, determining reference power consumption of the cooling machine; and based on the total load and the referencepower consumption of the cooling machine in the water chilling unit, controlling an operating state of the cooling machine in the water chilling unit. The implementation method can replace manpower for automatically adjusting the operating state of the water chilling unit, so that the operation and maintenance efficiency is improved, and the energy consumption of the water chilling unit is reduced.

Control method and control device for water chilling unit

The invention discloses an air conditioner control method The method comprises the following steps that current working condition parameters of an air conditioner are obtained, wherein the current working condition parameters include the current environment parameter and the current set parameter of the air conditioner; target operating parameters are obtained according to a plurality of historical operating parameters corresponding to the current working condition parameters and a first energy efficiency ratio corresponding to the multiple historical operating parameters; and the air conditioner is controlled to operate at the target operating parameters The invention further discloses the air conditioner and a computer readable storage medium By means of the air conditioner control method, the air conditioner and the storage medium, the energy efficiency ratio of the air conditioner can be optimized

Air conditioner control method, air conditioner and storage medium

The invention provides an on-line monitoring method and device for the energy efficiency of a central air conditioning system. The on-line monitoring method for the energy efficiency of the central air conditioning system comprises the steps that according to electric data of the central air conditioning system, the energy consumption condition of the central air conditioning system is acquired based on an energy consumption model of the central air conditioning system; and the energy efficiency condition of the central air conditioning system is calculated based on the energy consumption condition of the central air conditioning system. According to the on-line monitoring method and device, by means of data processing of the historical operation parameters of the central air conditioning system, simulation modeling is carried out on the energy consumption of the central air conditioning system, then the correlation between the electric data acquired by an intelligent electricity meter and the central air conditioning system is analyzed, the real-time energy consumption of the central air conditioning system and all parts can be obtained by obtaining the electric data in real time, and then the energy efficiency conditions of the central air conditioning system and all the parts can be analyzed; and the problem that required parameters for existing on-line recognition of the energy efficiency of the central air conditioning system are complex can be solved.

On-line monitoring method and device for energy efficiency of central air conditioning system

The invention provides an energy consumption calculation and energy-saving measure evaluation method for a motor device and cluster system. The method includes the steps that an energy consumption calculation model of the motor device and cluster system is built; energy consumption parameters in the energy consumption calculation model are corrected, and the corrected energy consumption parameters are obtained; the energy consumption of the motor device and system is calculated, an energy-saving measure sensitivity analysis method is used for conducting energy-saving measure sensitivity analysis on the device and system, and the effect of an energy-saving measure is evaluated. According to the method, the energy consumption calculation model is built for the motor device and cluster system, the accurate energy consumption parameters of the motor device and cluster system are obtained, errors caused by calculation by using the standard formula are thus avoided, and the calculation accuracy of the energy consumption of the motor device and cluster system is improved. At the same time, the energy-saving measure evaluation method for the motor device and cluster system is designed, the effect of the energy-saving measure is predicted, the risk of energy-saving investment is reduced, and the energy-saving transformation efficiency is improved.

Energy consumption calculation and energy-saving measure evaluation method for motor device and cluster system

The invention provides an energy consumption level evaluation method and apparatus for a cluster motor system. The method comprises: S1, on the basis of an established cluster motor system evaluation index system, acquiring a fuzzy integrated evaluation matrix of a target layer of the evaluation index system by a fuzzy comprehensive evaluation method; and S2, according to the a fuzzy integrated evaluation matrix of the target layer, acquiring an evaluation result of the energy consumption level of the cluster motor system. According to the invention, the accuracy and correctness of energy consumption level evaluation are guaranteed and an accurate energy consumption level evaluation result can be obtained in practical application; and thus a reference is provided for energy consumption analysis and operation adjustment of the cluster motor system.

Energy consumption level evaluation method and apparatus for cluster motor system

The invention provides a method and a device for predicting the energy saving quantity of a radial distribution network. The method comprises the following steps: predicting the electric energy consumption of a hierarchical radial distribution network after energy saving measures based on branch parameters corresponding to the branches of the radial distribution network to get predicted electric energy loss; and predicting the energy saving quantity of the radial distribution network after energy saving measures based on the electric energy loss of the radial distribution network before energy saving measures and the predicted electric energy loss. Before energy saving measures are taken, energy saving schemes can be compared according to the predicted energy saving quantity, and an energy saving scheme with a better energy saving effect can be chosen. In addition, the electric energy loss of the whole radial distribution network after energy saving measures instead of the electric energy loss of part of the branches taking energy saving measures is considered, and therefore, the energy saving quantity calculated is more accurate.

Wei Wenqiang

Papers

On-line monitoring method and device for energy efficiency of central air conditioning system

Energy consumption calculation and energy-saving measure evaluation method for motor device and cluster system

Energy consumption level evaluation method and apparatus for cluster motor system

Method and device for predicting energy saving quantity of radial distribution network