A prosumer unit control method based on intelligent load

Abstract

The invention discloses a method for controlling a Prosumer unit based on an intelligent load. The Prosumer unit includes household key loads, household photovoltaics, and electric vehicle household charging piles connected in parallel on the busbar. The method includes: (1) selecting several For non-critical loads with preset voltage offsets, each non-critical load is connected in series with an electric spring to form a smart load and connected in parallel to the bus; (2) construct the power model of the Prosumer unit; (3) monitor the voltage on the bus According to the change of the assigned amplitude and phase, the power springs in the smart load are issued to adjust the active and reactive power adjustment instructions; (4) The construction constraint is the real-time balance of the power of the Prosumer unit, and the optimization goal is the minimum daily load fluctuation of the power of the Prosumer unit The objective function is solved by using the NSGA-II algorithm, so as to decompose the power adjustment instructions issued to the smart load; (5) the non-critical load of the smart load executes the power adjustment instructions obtained by decomposing. The invention solves the problems of uncontrollable power of the Prosumer unit and large daily load fluctuations.

Description

Technical field [0001] The present invention relates to power system control technology, in particular to a Prosumer unit control method based on smart load. Background technique [0002] With the development of renewable new energy and the continuous reduction of traditional energy reserves such as coal, the global fuel structure has undergone tremendous changes. Household photovoltaics are widely favored for their low land cost, low power transmission loss, and small investment in power transmission and transformation. In the future, my country will further promote the integration of distributed photovoltaic power generation and promote residential rooftop photovoltaic projects. At the same time, as one of the representatives of new energy, new energy vehicles have become the trend of the future automobile industry because of their clean and environmentally friendly characteristics. Research on electric vehicle charging technology has also become a hot spot at home and abroad....

AI Technical Summary

Problems solved by technology

[0004] 1. At present, the modeling of Prosumer units has not fully considered the situation that household photovoltaics and electric vehicles are connected to the home at the same time, and most of the existing research uses energy storage units to participate in energy management, and the user's economy is not high. The effect of reducing load fluctuations in the unit

In addition, the problem of power circulation in Prosumer has not been solved, and the circulation of active / reactive power cannot be effectively controlled

[0005] 2. At present, the research on the grid-connected technology of household photovoltaic power generation has been relatively in-depth, but the domestic household photovoltaic currently adopts the mode of all grid connection, and the principle of local consumption has not been fully considered

In addition, the problem of oversupply of household photovoltaics is mostly solved by combining energy storage devices with reactive power adjustment of household photovoltaic inverters, which has high costs and low utilization of photovoltaics

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