Distributed reactive power compensation system and compensation method for virtual power plant

Abstract

The invention provides a virtual power plant distributed reactive compensation system and compensation method thereof. When a regional power grid to which the virtual power plant belongs happens a no-power vacancy, power dispatching center send a power reactive regulating variable to the virtual power plant according to the specific condition. A distributed reactive power compensator utilizes distributed optimal control strategy to coordinate the no-power vacancy of the regional power grid among distributed power supplies inside the virtual power plant, which makes the total amount of a reactive power be distributed in phase among all distributed power supplies inside the virtual power plant and finally makes the virtual power plant satisfy entirely a voltage performance index to be optimized. The virtual power plant distributed reactive compensation system and compensation method thereof has the advantages of meeting a need of the reactive power regulation of the regional power grid center and meanwhile achieving the optimum of the voltage performance index inside the virtual power plant.

Description

technical field [0001] The invention relates to the fields of related technologies and methods such as distributed power supply, virtual power plant, droop control and distributed reactive power optimization, and particularly relates to a distributed reactive power compensation system and compensation method of a virtual power plant. Background technique [0002] 1) Large-scale application of distributed power: Distributed power generation generally refers to the introduction of distributed power supply with small capacity near the user side of the power distribution system, which can comprehensively utilize existing natural resources and equipment to provide users with reliable and Premium electrical power. In recent years, distributed power generation has received extensive attention, and its development is very rapid. However, with the continuous improvement of the penetration rate of distributed power generation in the power grid, and because of its randomness in output,...

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Problems solved by technology

[0005] The traditional power grid control method is mainly centralized, but as a large number of geographically dispersed and different types of distributed power sources are connected to the power grid on a large scale, if we continue to use centralized control methods to control distributed power sources scattered throughout the power grid The output will inevitably bring a sharply increased burden to the power grid dispatching system, and it is also not conducive to the sustainable development of distributed power in the later stage.

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