Electrical network operation risk assessment method of wind electricity large-scale tripping

A technology for risk assessment and power grid operation, which is applied in the field of power system and can solve the problems of wind turbine off-grid and impact on the safety of large power grids.

Active Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +4
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Due to the rapid development of wind power in my country, as well as the inconsistency between wind power planning and construction and power grid planning, wind turbine manufacturing, grid connection standards, and construction quality, it is ve...

Method used

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  • Electrical network operation risk assessment method of wind electricity large-scale tripping
  • Electrical network operation risk assessment method of wind electricity large-scale tripping
  • Electrical network operation risk assessment method of wind electricity large-scale tripping

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Experimental program
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Embodiment

[0127] Taking a certain target mode year of Northwest Power Grid as an example, based on the PSD-BPA simulation platform, the operation risk of large-scale wind turbine off-grid in Jiuquan Wind Power Base is analyzed and evaluated.

[0128] Such as Figure 6, Jiuquan Wind Power Base includes Ganqiao Bay, Ganqiao North, Ganqiao East, Gangan East, Gangan North, Gangan West and other main wind farms connected to the grid through 330kV lines. The installed capacity of Jiuquan Wind Power Base in the research target year of this invention is about Each wind farm is connected to the grid through a voltage level of 0.69 / 35 / 330kV, and the power is transmitted to the grid through the nearly 1,000-kilometer Dunhuang-Jiuquan-Hexi-Wusheng 750kV transmission channel (Hexi transmission channel).

[0129] (1) Risk assessment of wind power off-grid transient stable operation;

[0130] Figure 7 It is a schematic diagram of the actual power generated by the Jiuquan wind power base of the Nort...

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Abstract

The invention provides an electrical network operation risk assessment method of a wind electricity large-scale tripping. The method comprises the following steps of: simulation of a wind electricity large-scale tripping accident caused by a fault, a risk assessment of electrical network transient stability after disturbance, the risk assessment of system frequency stability after the disturbance, and the risk assessment of voltage stability after the disturbance. The method of the invention quantizes the risk of the wind electricity large-scale tripping from each aspect of the electrical network operation, so that the effects of preventing the wind electricity tripping and improving the electrical network safety are achieved.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a grid operation risk assessment method for large-scale off-grid wind power. Background technique [0002] In order to achieve the grand energy strategy of low-carbon, environmental protection, green and sustainable development, my country has vigorously developed renewable energy in recent years, and has issued a series of standards and policies for renewable energy, giving strong support at the national level. Renewable energy has been developed by leaps and bounds. Especially for wind power, several million-kilowatt wind power bases in my country have been completed and connected to the grid for operation, and the planned eight million-kilowatt wind power bases are also being gradually constructed. The development mode of wind power in my country is different from that of foreign countries. Large-scale centralized access, high-voltage long-distance transmission, and lar...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 陈得治牛拴保王吉利马世英汪宁渤宋云亭马彦宏郑超周识远李鹏
Owner STATE GRID CORP OF CHINA
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