Wind power disturbance online safety precaution method

Abstract

The invention discloses a wind power disturbance online safety precaution method. The wind power disturbance online safety precaution method comprises the following steps: acquiring real-time running methods of a power grid and a wind power plant; obtaining possible wind power disturbance of a current power grid in combination with historical data of the wind power plant; comprehensively calculating and evaluating safety and stability situations of the current power grid which is suffered from wind power disturbance; and carrying out online safety precaution of the wind power disturbance. Information of SCADA and information of WAMS are comprehensively utilized to carry out load flow calculation, the result is approximate to the actual situations, and the obtained effect is good. By the wind power disturbance online safety precaution method, high frequency historical monitoring data of the wind power plant are analyzed, the problem of difficulty in obtaining wind power disturbance information is solved, and wind power plant anticipated disturbance accords with actual situation of the power grid. A dynamic safety evaluation and precaution technique is combined with the wind power disturbance online safety precaution method, the power grid which is suffered from the wind power disturbance is subjected to comprehensive safety and stability calculation in distributed and parallel ways, and the calculation efficiency is high. And moreover, by the wind power disturbance online safety precaution method, weak areas of the power grid which is suffered from the wind power disturbance are given, and the calculation results are intuitional and easy to understand, so that practical dispatching and operation are easily guided.

Description

technical field [0001] The invention relates to the field of power system simulation and calculation analysis, in particular to an online safety warning method for wind power disturbance. Background technique [0002] The modern power grid has a large scale and complex operation mechanism. While the development of wind power technology provides more opportunities for the power grid, it also faces a series of challenges, which makes the operation and control of the power grid more complicated, and has great impact on the peak regulation, voltage quality, and safe and stable operation of the power grid. greater impact. Due to the vast area, long power supply lines, and most of the wind farms are far away from the load center, the connected grid structure is relatively weak. Therefore, large-capacity wind turbines are connected to the grid in a centralized manner, which squeezes the transmission capacity of the grid. Especially in the process of system failure and system volta...

AI Technical Summary

Problems solved by technology

The grid connection of wind farms has a certain impact on the short-circuit capacity of the grid. Since most of the current generators are still asynchronous generators, when the wind farm is connected to the grid, the short-circuit current at the access point will increase, and the increase in short-circuit capacity may exceed the protection device of the grid. capacity

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