AGC system with wind power participating in peak-shaving and frequency modulation and control method

Abstract

The invention discloses an AGC system with wind power participating in peak-shaving and frequency modulation and a control method. A wind power control module is established at a split dispatching AGCend, and a virtual wind power unit corresponding to each provincial dispatching is established in the wind power control module, so as to implement the indirect control of wind power of each provincial dispatching in an area. A wind power control module is established in provincial dispatching AGC to implement wind farm power control. In the split dispatching AGC, a rolling plan is first made onpower generation indexes of each provincial dispatching wind power, the output stability of the virtual wind power units and the stability of the power generation indexes are detected at the same time, and if the virtual wind power units meet that the output and the power generation indexes are both stable, a peak-shaving and frequency modulation mode can be enabled. In the peak-shaving and frequency modulation mode, ACEs are allocated to each virtual wind power unit according to a given ratio. The virtual wind power units are then added with the ACE allocation amount as the frequency modulation increment on the basis of the power generation indexes to obtain the overall control objective, and the provincial dispatching AGC controls the wind farms in the area according to the total controlobjective.

Description

Technical field [0001] The invention relates to the technical field of power system active power control, in particular to an AGC control system and a control method suitable for large-scale wind power grid connection, based on a two-level dispatch coordination control framework, through participation in grid peak regulation and frequency regulation to achieve additional wind power generation. Background technique [0002] In addition to hydropower, wind power generation is currently the most mature technology and the most economical renewable energy power generation method. After large-scale wind power is connected to the grid, the randomness, volatility and intermittent characteristics of wind power will gradually affect the safe and stable operation of the power grid. With the start of construction of many domestic tens of millions of kilowatts of wind power bases, it is increasingly difficult for the power grid to absorb all wind power under the premise of ensuring safe and s...

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Problems solved by technology

[0013] Document 5 analyzes reducing the adverse impact of wind power intermittency on the grid after large-scale wind power access from the perspective of reserved adjustment capacity of wind farms, but requiring wind farms to reserve a part of adjustment capacity based on ultra-short-term load forecast results is contrary to the current new energy The basic requirements for the consumption of wind power resources as much as possible in the development policy

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