A load control method for an electric water heater

A technology of electric water heater and load control, which is applied to fluid heaters, lighting and heating equipment, etc., and can solve problems such as limited control effects

Active Publication Date: 2019-10-01
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing load control methods for electric water heaters are based on the temperature information of electric water heaters. Since the temperature information of electric water heaters is difficult to obtain in practice, the control effect of the existing load control methods is limited.

Method used

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  • A load control method for an electric water heater

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with accompanying drawings and examples.

[0022] refer to figure 1 , this method includes the following steps:

[0023](1) First execute step 101, group the electric water heaters according to the volume of the water tank, the upper and lower limits of the temperature and the rated power, and then carry out the second grouping according to the number of users and user habits, so that each group of electric water heaters has the same volume, power, The upper and lower limits of temperature, the number of users and user habits. One group [120L, 3000W, 45°C-50°C], [160L, 3000W, 45°C-50°C], [200L, 3000W, 45°C-50°C], [279L, 4500W, 45°C] °C-50°C], [320L, 6000W, 45°C-50°C], [120L, 3000W, 50°C-55°C], [160L, 3000W, 50°C-55°C], [200L, 3000W, 50°C-55°C], [279L, 4500W, 50°C-55°C], [320L, 6000W, 50°C-55°C]. In practice, the number of users supported by an electric water heater is related to its size,...

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Abstract

The invention discloses a novel electric water heater load control method. A direct method adjusting a controllable load operation mode is an effective method for peak clipping and valley filling of an electric power system. Electric water heaters are important constituent parts of controllable loads, have excellent heat storage capacity and are wide in application. Power and water tank volumes ofthe electric water heaters and water consumption of users are different, so that the running states of the electric water heaters are different, namely heating time and non-heating time are different. Therefore, in the process of adopting an off-control load control mode, the electric water heaters are ordered according to continuous heating time, and then the appropriate electric water heaters are selected to be turned off, so that the purpose of peak clipping and valley filling is achieved on the premise that the comfort level of the users is not influenced.

Description

technical field [0001] The invention relates to a load control method for electric water heaters, more specifically, by multiplying the heating time of electric water heaters with corresponding weights and arranging them in descending order, selecting electric water heaters to be turned off according to the obtained descending order to achieve load control. Background technique [0002] Direct load control adjusts the controllable load and modifies the load curve to realize peak shaving and valley filling of the power system without affecting the user's use. As an electrical appliance with wide application and large heat storage capacity, electric water heater is an important controllable load. By controlling the electric water heater to change the load curve of the electric water heater group, the peak value of the power system is reduced. Most of the existing load control methods for electric water heaters are based on the temperature information of electric water heaters...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
Inventor 何怡刚项胜李晨晨陶琳佐磊何鎏璐
Owner HEFEI UNIV OF TECH
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