Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for stabilizing an electric grid

A technology of power grid and power grid state, applied in the field of power supply network, can solve problems such as grid faults that cannot support symmetry

Active Publication Date: 2013-06-26
SMA SOLAR TECH AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this method cannot support symmetrical grid faults since it only calibrates the reverse phase sequence system components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for stabilizing an electric grid
  • Method for stabilizing an electric grid
  • Method for stabilizing an electric grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] figure 1 A device 1 for generating electrical energy is shown.

[0046] The figure shows a PV generator 2 with a plurality of PV modules 3 , 4 , 5 , 6 which are electrically connected according to current requirements.

[0047] The PV generator 2 is connected on the DC voltage side to an inverter 9 via a positive DC lead 7 and a negative DC lead 8 . The PV generator 2 converts the incoming energy into direct current, which in turn is converted by the power section 9 of the inverter 22 into one or more deliverable alternating currents.

[0048] On the AC voltage side, the inverter 22 is connected via a plurality of electrical leads to a low-voltage side (NS) 10 of a grid for supplying electrical energy to consumers, for example to a public power grid. The individual leads on the AC voltage side are not provided with reference signs for the sake of clarity. The diagram relates to a three-phase power network, the three phases of which are generally labeled L1, L2 and L3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A grid support method, the grid support being carried out by feeding compensation currents, comprises the following steps: determining an actual grid state (step 100), breaking down the voltages determined for determining the actual grid state into positive sequence components and negative sequence components (step 101), determining the positive and negative sequence components of a compensation current as functions of the deviations of the positive and negative sequence components of the grid state from reference values (steps 102, 103) and feeding a compensation current as the vector sum of the symmetrical components thereby obtained.

Description

technical field [0001] The invention relates to a method for stabilizing a supply network, such as a public network, which supplies electrical energy to consumers. Background technique [0002] "Stability of the grid" should be understood as the state in which a value representing a characteristic of the voltage supplied by the grid (such as voltage value, phase and / or frequency) is at a level that may be within the range specified by the [0003] The "stability of the grid" defined in the previous paragraph can be reduced by deviating from the defined desired state (so-called optimal state), where the desired state can be specified (for example for the above-mentioned characteristic values) rated value to describe. Grid faults also produce such deviations, since they cause a grid state in which one or more of the aforementioned values ​​deviates from the setpoint value. [0004] The grid in question for supplying electrical energy to consumers generally has different gri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J2300/24H02J3/381Y02E10/56H02J3/48H02J3/50H02M7/44
Inventor K·德布拉班德尔V·萨科舍韦斯基L·克拉默Y·T·法齐S·斯特文斯D·普雷姆
Owner SMA SOLAR TECH AG