Active power control distribution algorithm for improving generating capacity of wind power plant during limited power

Abstract

The invention discloses an active power control distribution algorithm for improving the generating capacity of a wind power plant during power limitation. By taking the distance from a wind power plant booster station line as an important control priority factor, a unit far from the wind power plant booster station line is preferentially controlled during limited power generation operation; when a dispatching instruction requirement is not met, a unit close to a wind power plant booster station line is controlled, specifically, when a plurality of units operate to generate power, the active power control priority of the unit close to the wind power plant booster station line is lower; only when the power limiting instruction is not met and the unit with the higher priority is controlled, the active power output of the type of unit can be limited; therefore, active power line loss is reduced, active power output of the wind power plant is improved, and finally generating capacity of the wind power plant is improved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an active power control distribution algorithm for increasing the power generation of a wind farm when the power is limited. Background technique [0002] With the rapid development of new energy wind power generation, the installed capacity of a single wind farm is increasing. Most wind farms have many windy weather every year and there are power cuts. The more installed capacity, the more collector lines of wind farms. The longer the length of a single collection line, the less the loss of the active power generated by the unit that is closer to the line of the booster station of the wind farm, the less the loss will be, and the more active power can be transmitted to the grid. In this way, in the case of strong wind and power rationing, for the units with active power output, the active power output of the units that are far away from the line of the wind farm bo...

AI Technical Summary

Problems solved by technology

[0005] P sl That is, the active power lost by the line, due to the law of conservation of physical energy in nature, P sl will always be a positive number; this leads to the fact that when the wind farm operates in accordance with the dispatching system, the active power output controlled by the generator set meets the target value of the dispatching system. Due to the existence of P sl That is, the line loss, the P transmitted to the grid sm It will be small, so that the wind farm will generate less power; most of the existing power distribution algorithm technology is adjusted according to the power generation capacity of each unit, which only considers meeting the active power command requirements of the grid, and does not take into account the power of the line. Losses due to loss, so the existing control allocation algorithm will lose power generation

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