An intelligent control device and method of an energy storage system for reducing the loss of a photovoltaic power station

Abstract

The invention discloses an intelligent control device and method of an energy storage system for reducing the loss of a photovoltaic power station. The device comprises: a synchronous signal acquisition module configured to synchronously acquire output voltage signals of a photovoltaic power station, light irradiance and SOC monitoring quantities of a battery, and transmit the same to an energy storage intelligent centralized controller, wherein the energy storage intelligent centralized controller is connected to an energy storage system of the photovoltaic power station. The energy storage intelligent centralized controller is configured to: divide the whole day into three periods: peak period, valley period and peace period; determine a period of time at the current time, and predict aphotovoltaic power generation output power at the current time according to the output voltage signal and the current signal of the photovoltaic power station at the current time; determine a controlmode of an energy storage system for controlling a photovoltaic power station in each period. The energy storage system of the photovoltaic power station is controlled by the matching control mode inthe current period until the end of the day. By controlling the energy storage system of the photovoltaic power station every day, the operation loss of the photovoltaic power station is minimized andthe maximum profit is obtained.

Description

technical field The invention belongs to the technical field of solar photovoltaic power generation in new energy, and in particular relates to an intelligent control device and method for an energy storage system that reduces the loss of a photovoltaic power station. Background technique As large-scale distributed and centralized photovoltaics are connected to the grid, their volatility and randomness are bound to have adverse effects on the power flow, voltage, loss, etc. of the grid. The photovoltaic booster station is in the no-load operation state at night, and the no-load loss generated will cause unnecessary power loss of the power grid enterprise, cause the increase of network loss, and cause certain economic losses to the power grid enterprise. The energy storage system can realize the time-space translation of energy. Combining it with photovoltaics can transform the photovoltaic system from uncontrollable to controllable power, thereby reducing its negative impac...

AI Technical Summary

Problems solved by technology

However, the current energy storage system control method and system control efficiency are low, and there is a lack of an efficient and intelligent stop loss control method

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