Comprehensive power distribution method for wind power plant

Abstract

A comprehensive power distribution method for a wind power plant includes steps of real-time data acquisition of the wind power plant, power distribution calculation, distribution adjustment instruction output and power fine adjustment implementation. Wind generation set power distribution values are calculated by means of minimum maintain set combination, multiple objective programming distribution, standby set capacity rotation and active and reactive power coordination control. Power fine adjustment refers to adjustment when a wind power plant monitoring system detects that wind generation sets fail to meet the limiting value index PLim(t) or are in over-adjustment after one-time power distribution is completed. The distribution adjustment instruction output refers to that aiming at power adjustment values obtained by calculating distribution values and the set power value in power fine adjustment, three modes including equal-proportion output, output instruction verification and power fine adjustment are adopted to send power control and adjustment instructions to a wind generation set control system. Real-time power monitoring and adjustment of each set are realized by the aid of the wind power plant monitoring system by judging the current practical operating states of the wind generation sets.

Description

technical field [0001] The invention relates to a wind farm control method, in particular to a power distribution method. Background technique [0002] At present, with the rapid development of clean energy in the world, the proportion of total non-fossil energy consumption is increasing, and my country's wind power industry is developing rapidly. By the end of 2011, the cumulative installed capacity of wind power reached nearly 62.4 million kilowatts, ranking first in the world. However, with the integration of large-scale wind power into the grid, the capacity of wind power generation will increase. However, the level of wind power grid connection technology is still very low, which has a significant impact on the load of the power system. Therefore, the operation management of wind farms and grid dispatching operations are put on the agenda. How to establish a new wind farm power distribution and scheduling method according to the characteristics of wind power generation...

AI Technical Summary

Problems solved by technology

[0011] With the increase of unit types, there are differences in the degree of power adjustment. Although the strategy of Chinese patent 201010269035.7 reduces the frequency of frequent shutdowns to limit the output frequency of wind turbines, the actual explainability is poor when only the proportional model is used.

Moreover, the research on reactive power is similar to active power distribution, but there is less implementation of active and reactive power coordinated control

Therefore, the entire process of wind turbines from power allocation calculation, regulation and control implementation to coordination of conventional thermal power generation operation control, monitoring system active and reactive power regulation, and power recovery regulation after power limitation has not been deeply involved in the above documents

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