Arrangement having store for electrical energy and regenerative energy generator, in particular a wind power plant, and method for operating same

Abstract

The invention relates to an arrangement comprising a regenerative energy generator (1) and a store (2) for electrical energy to be output to a grid (9), the regenerative energy generator (1) comprising an energy converter (13) for converting renewable energy sources into electrical energy and a power control unit (10) which has an input for a target power output and controls the power generation by the regenerative energy converter (13), with a charge controller (20) for the store (2) also being provided, which sets a minimum operating reserve to be provided and outputs a signal for a target state of charge (SoC) of the store (2). In order to achieve improved utilisation of the store, a correction unit (4) is connected to the charge controller (10) and continuously modifies the signal for the target state of charge (SoC). A sequence control unit (5) is also provided, which is actuated by the correction unit (4) and influences the power control unit (10) of the regenerative energy generator according to an output value of the correction unit (4).

Description

technical field [0001] The invention relates to a device for energy generation and storage. The device comprises: a regenerative energy generator, in particular a wind power plant and / or a photovoltaic plant; and an electrical energy store. Background technique [0002] In order to ensure high supply reliability, the grid must be able to quickly compensate for differences between power generation on the one hand and power consumption on the other. The electrical power required for this is referred to as regulated power. Positive regulation of power is required so that often sudden shortfalls in power generation, such as power plant outages, can be compensated. The opposite is true in the case of negatively regulated power, where power generation is too much relative to power consumption, so that generation must be reduced. In both cases, power regulation overcomes power oversupply or undersupply quickly and for a limited period of time, ie until other reserve generation c...

AI Technical Summary

Problems solved by technology

This advantage is offset by the disadvantage that additional components are required to dissipate the excess energy; moreover, due to the lack of storage possibilities, this dissipation of electrical energy is a waste of energy that just needs to be avoided

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