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Dead zone setting method for participation of energy storage in primary frequency modulation of power grid

A grid frequency and energy storage technology, applied in circuit devices, AC network circuits, and AC network load balancing, etc., can solve problems such as the volatility of renewable energy power generation, avoid the reduction of energy storage efficiency, improve the state of charge, and improve The effect of applying the effect

Pending Publication Date: 2022-01-11
SOUTHEAST UNIV
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Problems solved by technology

[0002] With the goal proposed, the development of wind power, photovoltaic and other new energy power generation will be further accelerated, and the penetration ratio of renewable clean energy power generation in the power grid will also be further increased. However, this series of renewable energy power generation has the characteristics of volatility and intermittent nature. Grid-connected power generation poses a challenge to the safe and stable operation of the power grid

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  • Dead zone setting method for participation of energy storage in primary frequency modulation of power grid
  • Dead zone setting method for participation of energy storage in primary frequency modulation of power grid
  • Dead zone setting method for participation of energy storage in primary frequency modulation of power grid

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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] This embodiment proposes a method for setting a dead zone in which energy storage participates in the primary frequency regulation of the power grid. The dead zone input and output model corresponding to this method is as follows: figure 1 As shown, the corresponding working principle of the dead zone is as follows figure 2 As shown, the segmentation process of the corresponding dead zone segment function is as follows image 3 shown.

[0036] The dead zo...

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Abstract

The invention discloses a dead zone setting method for participation of energy storage in primary frequency modulation of the power grid. The method can improve the application effect of energy storage participating in power grid frequency modulation and improve the operation charge state of energy storage at the same time. According to the method, by combining subsection function factors and considering self-adaptive factors of the energy storage charge state, power grid frequency deviation signals are screened and processed and are effectively fed back to an energy storage system, the reactivity to power grid frequency deviation is improved, the charge state of the energy storage system is maintained, and by means of screening and processing of signal sources, the action process and the action mode of energy storage are optimized, and the situation that the energy storage efficiency is reduced due to a complex control algorithm in the later period is avoided, so that the effect of energy storage participating in power grid frequency modulation is improved, the energy storage operation service life is prolonged, and the energy storage application value is improved.

Description

technical field [0001] The invention relates to a method for setting a dead zone, in particular to a method for setting a dead zone in which energy storage participates in primary frequency regulation of a power grid. Background technique [0002] With the goal proposed, the development of wind power, photovoltaic and other new energy power generation will be further accelerated, and the penetration ratio of renewable clean energy power generation in the power grid will also be further increased. However, this series of renewable energy power generation has the characteristics of volatility and intermittent nature. The grid connection of power generation poses a challenge to the safe and stable operation of the power grid. At the same time, my country's power system is gradually transitioning from an inertial system dominated by synchronous units to a new type of power system dominated by a high proportion of non-synchronous resources. The proportion of synchronous machines ...

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Application Information

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IPC IPC(8): H02J3/24H02J3/32
CPCH02J3/24H02J3/32H02J2203/20
Inventor 黎淑娟徐青山华奎
Owner SOUTHEAST UNIV
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