Coordinated dispatch of wind power and conventional energy sources for wind power compatibility spinning reserve analysis method

Abstract

The invention relates to a wind power compatibility spinning reservation analysis method for the coordinated dispatching of wind power and conventional energy sources. The method aims to maximize system compatibility, and is implemented based on day-ahead power generation planning input and output data, the predicted power of wind power and a wind power fluctuation confidence interval are read, an output expression of a wind generation set is modified by utilizing a valley high-output and peak low-output typical output curve of the wind generation set for typical extreme conditions unfavorable for the absorption of a power grid for the wind power, various kinds of constraint conditions comprising all day-ahead planning constraint conditions of the wind generation set and a conventional energy source machine sets are comprehensively taken into account to include a wind power compatibility analysis feasible region in day-ahead planning and ensure the guiding significance of a wind power compatibility analysis result for the day-ahead planning, and a system wind power fluctuation curve capable of ensuring strict consistency with constrains of spinning reservation and the like is obtained to provide reference indexes for the stable running of wind power dispatching. The method has the characteristics of low calculation intensity and high adaptability, and is more suitable for popularization and application in a dispatching organization with higher wind power access power in China.

Description

technical field [0001] The invention belongs to the technical field of electric power system dispatching automation, and in particular relates to a method for analyzing wind power compatibility spinning reserve under the coordinated dispatch mode of wind power and conventional energy. Background technique [0002] At present, energy saving, emission reduction and curbing climate warming have become a common challenge and an important issue facing the whole world. The Chinese government attaches great importance to the work of energy conservation and emission reduction in the power industry, and proposes to implement energy-saving power generation dispatching in the power field, improve the efficiency of energy use in the power industry, reduce environmental pollution, and promote the adjustment of energy and power structures. This is a major measure for the electric power industry to implement the scientific outlook on development and build a harmonious socialist society, an...

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Problems solved by technology

However, due to the volatility and intermittency of wind power output, short-term wind power forecasting is difficult to accurately predict future wind power output. Therefore, there is a certain range of deviation between the actual output of wind power operation and the wind power output in the day-ahead plan. In this paper, the impact of forecast deviation on grid backup demand has been considered from the perspective of backup demand, but it cannot be guaranteed that when extreme deviations in wind power output occur, the constraints on the reserved spinning reserve in the previous plan are still strictly established.

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