Distributed photovoltaic consumption control method based on load time-shifting characteristics

Abstract

The embodiment of the invention provides a distributed photovoltaic consumption control method based on load time-shifting characteristics. The distributed photovoltaic consumption control method comprises the steps of: establishing a facility agricultural load model and a distributed photovoltaic power output model; establishing an objective function and corresponding constraint conditions, wherein the objective function is a distributed photovoltaic power supply consumption function, and the constraint conditions include system power balance constraints, photovoltaic output constraints, battery charge and discharge constraints and node voltage constraints; and designing a load time-shift consumption control strategy by taking the maximum photovoltaic power consumption as a target based on the objective function according to the facility agricultural load model and the distributed photovoltaic power output model, and selecting an optimal consumption mode according to the control strategy. The embodiment of the invention can track the variation law of the output power of the distributed photovoltaic power source according to the time shift regulation of the intelligent agriculturalload to achieve the distributed photovoltaic reliable consumption and the maximization of consumption electricity and solve the problems of voltage quality and excess photovoltaic power of a rural power distribution network caused by a large-scale distributed photovoltaic.

Description

technical field [0001] Embodiments of the present invention relate to the field of electric power technology, and more specifically, to a distributed photovoltaic consumption control method based on the time-shiftable characteristics of loads. Background technique [0002] The demand for electricity load in the vast rural areas has grown steadily, and smart agriculture and facility agriculture have huge growth potential as new electricity customers, especially in high-altitude, semi-arid and arid areas. The load demand for facility agriculture is more urgent. Therefore, the facility agricultural power supply system equipped with distributed power will be an important new way to solve the problems of agricultural load growth and electricity supply promotion. However, the access of distributed power generation also poses a potential threat to the security and stability of rural power grids. For example, in the western rural areas, electricity consumption is small except for t...

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Problems solved by technology

The time-shift characteristics of agricultural loads have not been involved in the prior art to realize the optimal consumption of distributed power

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