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The Control Method of Electric Heating Boiler Participating in Primary Frequency Regulation of Power Network

A control method and electric boiler technology, applied in the field of control, can solve the problems of intensified frequency fluctuation of the power grid and insufficient primary frequency regulation capability on the power generation side

Active Publication Date: 2021-09-14
田雨林
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The double random disturbance on the power generation side leads to aggravated grid frequency fluctuations, and the contradiction of insufficient primary frequency regulation capability on the power generation side becomes increasingly prominent

Method used

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  • The Control Method of Electric Heating Boiler Participating in Primary Frequency Regulation of Power Network
  • The Control Method of Electric Heating Boiler Participating in Primary Frequency Regulation of Power Network
  • The Control Method of Electric Heating Boiler Participating in Primary Frequency Regulation of Power Network

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Embodiment Construction

[0040] The invention proposes a control method for a high-power heating electric boiler to participate in the primary frequency regulation of the power grid, aiming at the problem that the large-scale grid connection of wind power and other unstable power sources leads to insufficient power grid primary frequency regulation capability due to complex and variable power loads. When the change range (increase or decrease) of the grid frequency exceeds the dead zone of primary frequency regulation, it will automatically change (increase or decrease) the power of the electric boiler in a certain proportion to achieve the purpose of maintaining the grid frequency stability. Due to the great inertia of the heating network, a frequency modulation action within 30 minutes will not have any impact on the heat users. In addition, since the primary frequency modulation is a two-way action, it will not cause the heating load to be high or low for a long time. The control logic of the prese...

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Abstract

A control method for heating electric boilers to participate in the primary frequency regulation of the power grid, which is used to solve the problem of insufficient primary frequency regulation capability of the power grid due to complex and changeable power loads and large-scale grid connection of unstable power sources such as wind power. The method comprises the following steps: a. calculating a frequency modulation command; b. designing a frequency modulation filtering logic to filter the calculated frequency modulation command; c. performing cycle scheduling on the electric heater according to the filtered primary frequency modulation command. The present invention adds a frequency modulation instruction filtering logic and cycle scheduling logic in the control process of heating electric boilers participating in the primary frequency modulation of the power grid, which not only avoids the frequent action of the electric boiler heater switch, but also realizes the average use of each heater, thus prolonging The service life of the equipment. The invention can greatly improve the primary frequency regulation capability of the power grid and ensure the stable operation of the power grid.

Description

technical field [0001] The invention relates to a control method for using a high-power heating electric boiler to participate in primary frequency regulation of a power grid, and belongs to the field of control technology. Background technique [0002] It is difficult to store electric energy on a large scale. The power grid needs to dispatch the power generation load of the power supply in the grid at any time to make it follow the change of the power load to ensure the balance of power supply and demand. Frequency is an indicator that reflects the balance of power supply and demand in the grid: an increase in grid frequency means that the power supply exceeds demand, and the power generation load needs to be reduced; a decrease in power grid frequency means that the power supply is less than demand, and the power generation load needs to be increased. The process of power grid regulation of power generation load is mainly divided into primary frequency regulation and seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24
CPCH02J3/24
Inventor 田雨林
Owner 田雨林
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