Source network coordinated scheduling method for improving wind electricity admitting ability of power grid

A wind power receiving capacity and coordinated dispatching technology, applied in wind power generation, single-network parallel feeding arrangement, etc., can solve the problem of deciding how many wind turbines with installed capacity to be connected, and the coordinated dispatching method of wind power network has not been seen in literature reports and Problems such as practical application, economic benefit and environmental benefit degradation

Active Publication Date: 2013-04-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Since wind power is a low-density power source, the actual power generated by wind power cannot be equal to its installed capacity. As a dispatcher of the grid, it is difficult to decide how much wind power with installed capacity should be connected even if he knows how much power transmission space the grid has on a specific section. generator set
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  • Source network coordinated scheduling method for improving wind electricity admitting ability of power grid
  • Source network coordinated scheduling method for improving wind electricity admitting ability of power grid
  • Source network coordinated scheduling method for improving wind electricity admitting ability of power grid

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Embodiment Construction

[0047] A source-network coordination scheduling method for improving the wind power acceptance capacity of the power grid according to the present invention comprises the following steps:

[0048] 1) Determination of the transmission space of the wind power transmission route

[0049] my country's wind power is mainly developed in large-scale centralized contiguous areas. Usually, wind power and thermal power units share a transmission channel. For different load levels, the dispatched output of thermal power units will vary. Therefore, the power transmission space of the power grid varies under different operating modes. Yes, the transmission line space that can be used to transmit wind power is also changing;

[0050] Since the daily scheduling plan of conventional units in the grid is obtained based on accurate load forecasting, the output of conventional units is considered known, and the space for the transmission of wind power in the grid can be obtained:

[0051] ...

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Abstract

The invention relates to a source network coordinated scheduling method for improving wind electricity admitting ability of power grid. Aiming at problems existing in large-scale wind electricity networking operation in China that transmittability of the power grid is limited and wind turbine generator preparing to enter network can not be scheduled to enter network. Steps are adopted that confirming transmit electricity space of a path of transmitting wind electricity, confirming relationship between the max generated power of wind electricity and installed capacity of wind electricity, ensuring that scheduling scheme of safe operation of the power grid is disposed conservatively and the like, so that under the condition of ensuring grid security, the transmittability of the power grid is used to the maximum, generated energy of wind turbine generator is increased obviously, and waste wind of the wind electricity is reduced. Economic benefit and environmental benefit of utilizing wind energy are improved.

Description

technical field [0001] The invention belongs to the technical field of grid-connected operation of wind power generation, and relates to a source-network coordination scheduling method for improving the wind power acceptance capacity of a power grid. Background technique [0002] As the global environmental problems become more and more severe, countries all over the world pay more and more attention to the development and utilization of renewable energy. In recent years, my country's wind power installed capacity has grown at a rate of nearly 100%. At present, 8 wind power bases with a level of 10 million kilowatts have been planned. Such large-scale wind power development must adopt a networked operation method to achieve reliable transmission and distribution of wind power. [0003] In the scenario of large-scale wind power grid-connected operation, the transmission capacity of the power grid is often limited and the wind turbines that have yet to be connected to the grid...

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Application Information

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IPC IPC(8): H02J3/38
CPCY02E10/76
Inventor 穆钢崔杨严干贵刘嘉
Owner STATE GRID CORP OF CHINA
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