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Electric network power oscillation inhibitor based on photovoltaic battery

A grid power, photovoltaic cell technology, applied in the direction of reducing/preventing power oscillation, etc., can solve problems such as grid hazards

Inactive Publication Date: 2006-06-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The designed power grid power oscillation suppressor based on photovoltaic cells utilizes clean and renewable energy—solar energy to suppress power oscillations; at present, people only use photovoltaic cells for power generation, and no one thinks of using them to suppress The power oscillation of the system, and the harm of power oscillation to the power grid is huge, and it is very urgent and important to suppress the power oscillation to the power grid, especially the large-scale power grid. Therefore, the present invention is a brand new concept and subject

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  • Electric network power oscillation inhibitor based on photovoltaic battery
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  • Electric network power oscillation inhibitor based on photovoltaic battery

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Embodiment Construction

[0057] figure 1 Inside the virtual frame is a grid power oscillation suppressor 8 based on photovoltaic cells, which consists of a photovoltaic panel 1, a photovoltaic inverter 2, a filter 3, a grid-connected transformer 4, a controller 5, a voltage transformer 6, and a current transformer 7 and other components, the following describes each component in detail:

[0058] 1 is a photovoltaic panel, which can be composed of multiple photovoltaic cells, convert solar energy into electrical energy, and output DC voltage;

[0059] The second is a photovoltaic inverter, which converts DC power into AC power and transmits it to the grid. The inverter is composed of voltage source type devices that can be quickly turned off, and it has fast active and reactive power adjustment capabilities;

[0060] The third is the filter, which filters out the high-frequency harmonics output by the photovoltaic inverter, so that the voltage waveform output by the inverter is basically consistent wi...

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Abstract

A network power oscillation suppressor based on photovoltaic batteries characterizes that it is a device for suppressing network power oscillation based on photovoltaic barriers, which converts solar energy into electric energy by a solar energy battery board and outputs DC voltage then to invert it to AC voltage to be transmitted to the network, in which, it can carry out active regulation to the network or carry out reactive regulation to the system since the inverter is composed of voltage source type quick switch off components and outputs part of active power to the network when operating normally and regulates active and reactive powers output by the oscillation suppressor based on the control rule when power oscillation happens to the network.

Description

technical field [0001] A grid power oscillation suppressor based on photovoltaic cells belongs to the technical field of grid power oscillation suppression. Background technique [0002] In order to optimize the allocation of resources on a larger scale, improve the economic efficiency of the power grid, and improve the efficiency of accident support, my country's electric power is developing towards a large-scale network. The strategic pattern of "west-to-east power transmission, north-south mutual supply, and national networking" is gradually taking shape. However, With the increasing size of the power grid and the increasingly complex structure, the operation stability of the power grid is very important, especially for weakly interconnected AC power grids and AC-DC interconnected power grids, the problem of power oscillation is particularly prominent, which directly threatens the security and stability of the power grid Therefore, scholars at home and abroad have done a lo...

Claims

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Application Information

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IPC IPC(8): H02J3/24
Inventor 孙元章李国杰刘建政黎雄阮思烨
Owner TSINGHUA UNIV
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