Three-phase power distribution network voltage regulation method based on variable-frequency air conditioner

Abstract

The invention discloses a three-phase power distribution network voltage regulation method based on a variable-frequency air conditioner. The method comprises the following steps of S10, calculating tide and three-phase unbalance degree, determining the state of a power distribution network, and regulating the voltage and unbalance degree of each node of the power distribution network according tothe state of the air conditioner; classifying the air conditioners by using an Affinity Propagation (AP) clustering algorithm to determine the priorities of the air conditioners participating in adjustment; S30, according to the power required by adjustment and the priority of adjustment, the number of air conditioners required by adjustment and the allocated adjustment power of each air conditioner are determined; S40, the compressor frequency of the air conditioner is changed according to the adjusting power; and S50, the room temperature is updated, and next adjustment is prepared. Voltageregulation is conducted on the power distribution network through air conditioner management, and the electric energy quality is guaranteed.

Description

technical field [0001] The invention belongs to the field of power electronics, and in particular relates to a three-phase distribution network voltage regulation method based on an inverter air conditioner. Background technique [0002] As environmental problems and energy shortages become increasingly severe, the state vigorously promotes the change of energy consumption structure, and the photovoltaic and electric vehicle industries have developed rapidly in recent years. Since 2011, China, Japan, and the United States have begun to vigorously develop the solar photovoltaic industry, which has promoted the rapid development of the global photovoltaic industry. In 2017, the global photovoltaic market developed rapidly. In 2017, the new installed capacity exceeded 98GW, a year-on-year increase of 28.95%. The global cumulative installed capacity has exceeded 402.5GW, showing a good momentum of development. Traditional markets, such as the United States and Japan, have newly...

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Problems solved by technology

However, the existing technology is mainly aimed at providing electric energy storage for air conditioners, and there is a lack of technical solutions for air conditioners to participate in voltage regulation of distribution networks.

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