Electric water heater control strategy for microgrid frequency adjustment

An electric water heater and frequency adjustment technology, which is applied to water heaters, fluid heaters, lighting and heating equipment, etc., to achieve the effect of smoothing the frequency fluctuation of the microgrid, enhancing the participation in demand response, and stabilizing the frequency fluctuation of the microgrid

Inactive Publication Date: 2017-03-15
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a control strategy for electric water heaters for microgrid frequency adjustment in order to solve the problems existing in centralized control on the power demand side

Method used

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  • Electric water heater control strategy for microgrid frequency adjustment
  • Electric water heater control strategy for microgrid frequency adjustment
  • Electric water heater control strategy for microgrid frequency adjustment

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Embodiment Construction

[0030] The specific embodiment of the present invention is as figure 1 shown.

[0031] The specific implementation steps of a distributed control strategy for electric water heaters for micro-grid frequency adjustment in this embodiment are as follows:

[0032] 1. The user sets the adjustment coefficient k and the rated working temperature T of the electric water heater N ; The rated operating temperature range of the electric water heater is [T Ln ,T Hn ];

[0033] 2. The frequency response module periodically monitors and collects the frequency fluctuation amplitude △f;

[0034] 3. According to the k value set by the user, calculate the variation of the working temperature of the single electric water heater, The default value of the adjustment coefficient k is 500, and preferably can be set by the user of the electric water heater according to factors such as the degree of participation in the power grid.

[0035] 4. Readjust the temperature range of the electric wat...

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Abstract

The invention provides an electric water heater scattered type control strategy for microgrid frequency adjustment. According to the strategy, frequency fluctuation of a water heater to a microgrid is restrained through control over the temperature range of the water heater. A frequency response module is added to the water heater on the user side to monitor the frequency fluctuation of the microgrid in real time, and work state adjustment is conducted on the household electric water heater according to the fluctuation situation and user setting, so that the effect of restraining the frequency fluctuation of the microgrid is achieved. The frequency response module has user setting and coefficient regulation functions, a real-time microgrid frequency monitoring function, a water heater temperature monitoring function and a water heater temperature control function.

Description

technical field [0001] The invention relates to a control strategy for an electric water heater used for frequency adjustment of a microgrid, and belongs to the technical field of intelligent electricity utilization. Background technique [0002] With the development of smart grid, demand-side management technology has become a research hotspot in the power industry, and direct load control (Direct Load Control, DLC) has also matured. Temperature-controlled loads such as electric water heaters have energy storage characteristics. Short-term power outages will not have a drastic impact on user comfort, and energy consumption is stable. It is an important part of load scheduling in the power system. In the current demand-side management, centralized control strategies are commonly used, in which the cluster loads have a unified working state and small adjustable volume, which has a greater impact on user usage; while the control strategy that considers the individual working s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20F24H1/00
CPCF24H9/2014F24H1/0018
Inventor 何伟熊俊杰辛建波尹兆京车延博
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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