Method for participating area control error (ACE) control by uniformly modeling wind power plant and thermal power plant

Abstract

The invention discloses a method for participating area control error (ACE) control by uniformly modeling a wind power plant and a thermal power plant. During modeling of control area automatic gain control (AGC), the conventional thermal power plant and a wind power plant control object are involved; the wind power plant control object is similarly modeled according to the characteristics of the conventional thermal power plant; the wind power plant and the thermal power plant are classified into different control sets according to different power generation types; different sequencing strategies can be designed in the sets or among the sets, so that the wind power plant and the conventional plant can jointly participate in the ACE control. The wind power plant control object is controlled in different modes by considering a control area adjustment backup and an ACE adjustment direction, so that integrated coordinative control of the wind power plant and the thermal power plant is finally realized.

Description

technical field [0001] The invention belongs to the field of active power control of electric power systems, and relates to an ACE control method suitable for wind-fire unified modeling after large-scale wind power grid-connected. Background technique [0002] Wind power is currently the most mature technology and the best economic benefit of renewable energy power generation except hydropower. After the grid-connected operation of large-scale wind power, the impact of the randomness, volatility and intermittent characteristics of wind power on the safe and stable operation of the power grid has gradually emerged. With the start of construction of several 10-million-kilowatt-scale wind power bases in China, it is gradually becoming more difficult for the power grid to fully absorb wind power under the premise of ensuring safe and stable operation and active power control performance. high demands. [0003] According to the requirements of the national new energy policy, af...

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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