A power network and its control system and control method, and network dispatching device
A power network and control device technology, applied in the field of electric power, can solve the problems of large power grid demand, low utilization rate of production equipment and grid-connected micro-grid, etc., and achieve the effect of reducing management difficulty
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Embodiment 1
[0057] In the following, a power network provided by an embodiment of the present invention will be described in detail.
[0058] This embodiment provides a power network, which is composed of N microgrids, where N≥2. In this embodiment, N=3 is taken as an example, refer to figure 2 , the power network is a secondary microgrid composed of three first-level microgrids: No. 1 microgrid, No. 2 microgrid, and No. 3 microgrid.
[0059] Specifically, taking No. 1 microgrid as an example, each microgrid includes: a first bus (bus) 12 and a second bus 13 connected through a transformer device 11 . The first bus 12 is connected to the low-voltage side of the transformation equipment 11, for example a 0.4kV low-voltage bus, and the second bus 13 is connected to the high-voltage side of the transformation equipment 11, for example a 10kV high-voltage bus. In the power system, the busbar connects the various current-carrying branch circuits in the power distribution device, and plays t...
Embodiment 2
[0073] In the following, a control system for a power network provided by an embodiment of the present invention will be described in detail.
[0074] The control system provided by the embodiment of the present invention includes: N micro-grid control devices, and a network scheduling device connected to the N micro-grid control devices, where N≥2.
[0075] In this embodiment, the power network composed of three microgrids is taken as an example, refer to Figure 4 , the control system of the power network includes 3 microgrid control devices, namely No. 1 microgrid control device, No. 2 microgrid control device and No. 3 microgrid control device; and a network dispatching device connected to the 3 microgrid control devices . Wherein, each micro-grid control device is used to complete the internal management of the micro-grid it controls, and is controlled by the network scheduling device of the secondary micro-grid. As the management system of the second-level microgrid, t...
Embodiment 3
[0113] An embodiment of the present invention provides a control method of a power network, the power network is the power network described in Embodiment 1, and the specific operation steps of the control method are as follows Figure 10 shown, including:
[0114] S101. The network scheduling device receives microgrid information and connection line information sent by each microgrid control device.
[0115] The micro-grid information received by the network scheduling device includes: capacity equipment information, transmission equipment information, and load information. The tie line information received by the network dispatching device specifically refers to tie line switch status information, current / power information on the tie line, and the like. For specific reference to Embodiment 2, details are not repeated here.
[0116] For example, refer to Figure 5 , the micro-grid information and tie-line information received by the network scheduling device include: the p...
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Abstract
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Application Information
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