Flywheel energy storage array system and control method of flywheel energy storage array system
A flywheel energy storage and control method technology, applied in the field of microgrid, can solve the problems of insufficient active support capacity of island power grid, weak anti-frequency disturbance ability, and inability to respond quickly to inertia, so as to control the risk of low inertia system overrun and avoid The effect of secondary drop in frequency and improvement of overall economic benefits
Inactive Publication Date: 2021-03-19
沈阳微控新能源技术有限公司
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Problems solved by technology
[0009] The invention aims to solve the technical problems in the prior art that the active support capability of the island power grid is insufficient, the fast inertia response cannot be performed, and the anti-frequency disturbance capability is weak
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[0034] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.
[0035] Refer below Figure 2-Figure 4 The flywheel energy storage array system and the control method of the flywheel energy storage array system according to the embodiments of the present invention are described.
[0036] figure 2 is a schematic structural diagram of a flywheel energy storage array system according to an embodiment of the present invention. Such as figure 2 As shown, the flywheel energy storage array system 100 includes: a plurality of flywheel energy storage devices 110 , a plurality of energy storage converters 120 , a frequency detection device 130 and a control device 140 .
[0037] Wherein, a plurality of flywheel energy storage devices 110 are connected in parallel with each other, and the plurality of flywheel energy storage ...
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The invention discloses a flywheel energy storage array system and a control method of the flywheel energy storage array system, and relates to the technical field of micro-grids. The flywheel energystorage array system comprises a plurality of flywheel energy storage devices connected in parallel; a plurality of flywheel energy storage devices connected to the island power grid through the plurality of energy storage converters in a one-to-one correspondence manner; a frequency detection device, used for acquiring the real-time frequency of the island power grid; and a control device, respectively connected with the frequency detection device and the plurality of flywheel energy storage devices and used for controlling the plurality of flywheel energy storage devices according to the real-time frequency of the island power grid so as to carry out inertia support on the island power grid. According to the invention, the flywheel energy storage array system is configured in the islandpower grid, and when the island power grid suddenly has high-capacity active power shortage, power support is provided by the flywheel energy storage array system, so that the frequency change rate ofthe power grid is improved. The problems that the island power grid is insufficient in active supporting capacity, cannot perform quick inertia response, is weak in frequency disturbance resistance and the like can be solved in time.
Description
technical field [0001] The invention relates to the technical field of microgrids, in particular to a flywheel energy storage array system and a control method for the flywheel energy storage array system. Background technique [0002] Island grid, also known as micro grid, is a small power generation and distribution system composed of distributed power supply, energy storage device, energy conversion device, load, monitoring and protection device, etc. network systems, such as figure 1 shown. The island mode of the microgrid means that the microgrid works in a non-grid mode, and after being separated from the large grid, it relies on the distributed power supply in the microgrid to achieve self-sufficiency. [0003] The basic characteristics of the island power grid are that the fluctuation range of voltage and frequency is relatively large, and it is more obviously affected by the load operation. And the dynamic stability is poor. When the active power imbalance occurs...
Claims
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Login to View More IPC IPC(8): H02J3/30H02J15/00
CPCH02J3/30H02J15/007Y02E60/16
Inventor 王智勇
Owner 沈阳微控新能源技术有限公司