Regulation of contribution of secondary energy sources to power grid

A technology of power grid and distribution network, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., and can solve problems such as additional maintenance costs

Active Publication Date: 2013-05-01
FLUENCE ENERGY LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conventional power generation equipment often cannot react quickly enough to sudden chan

Method used

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  • Regulation of contribution of secondary energy sources to power grid
  • Regulation of contribution of secondary energy sources to power grid
  • Regulation of contribution of secondary energy sources to power grid

Examples

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Embodiment Construction

[0014] In order to more easily understand the principles underlying the present invention, an exemplary embodiment is described below with respect to the use of solar energy conversion devices, such as photovoltaic panels, as secondary sources. It is to be understood that the practical application of the present invention is not limited to this example, and that the present invention may be used in any environment where rapid swings in the output of an impairing energy source are desired.

[0015] figure 1 is a graph of the types of situations to which the present invention is applicable. For a particular time of day, eg, a given hour, the utility company expects a certain amount of output power from solar panels connected to the distribution grid. An upper limit 10 and a lower limit 12 may be determined for the period to define the range or band of allowable output power from the solar panels, taking into account the grid's ability to absorb changes. This range may vary wit...

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Abstract

An energy storage medium is combined with a secondary energy source that supplies power to an electricity distribution grid. The charge and discharge behavior of the energy storage medium is controlled so that rapid increases in the output of a secondary source of energy are absorbed by the storage system, whereas rapid decreases in the output of the secondary source are compensated by discharging stored energy onto the grid. The combined contributions of the secondary source and the energy storage system ensures a rate of change that does not exceed a defined level. Maximum and minimum output power levels for the secondary source can be established to define a normal operating range. The charging or discharging of the energy storage system is also performed when the secondary output power level exceeds or falls below the limits of the defined range.

Description

technical field [0001] The present disclosure relates to the utilization of secondary energy sources to contribute electrical energy to distribution grids, and more particularly to the regulation of the total electrical energy supplied to the grid by such sources and the instantaneous increase or decrease of such electrical energy. Background technique [0002] Generally, utilities obtain electricity from one or more primary electricity generating sources, such as gas, coal-fired, nuclear, and / or hydroelectric power plants, for delivery to consumers via the distribution grid. The electrical energy supplied from these sources is relatively stable and can be easily adjusted to meet the needs of consumers while complying with standards for such electrical energy, such as rated voltage levels and rated frequency levels. To supplement electricity supplied by these primary sources, it is increasingly common to connect secondary energy sources, such as solar panels and wind turbine...

Claims

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Application Information

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IPC IPC(8): H02J7/35H02J3/24H02J3/28
CPCH02J7/35H02J3/32
Inventor J·金泽C·J·谢尔顿S·米尔斯曼
Owner FLUENCE ENERGY LLC
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