Method for operating an electric unit for a pumped-storage power plant
a technology of pumped-storage power plants and electric units, which is applied in the direction of electric generator control, engine starters, machines/engines, etc., can solve the problems of large pump load, inability to ensure direct and permanent supply of electricity to consumers from these energy sources, and discontinuous operation times
Inactive Publication Date: 2015-02-19
ABB TECH AG
View PDF1 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
This solution simplifies and accelerates the operation of pumped-storage power plants by enabling direct startup and synchronization with the grid, reducing wear, and allowing for quick mode changes without additional transformers or complex auxiliary systems, thus enhancing efficiency and reducing operational complexity.
Problems solved by technology
These energy sources do have discontinuous operating times. Therefore, a direct and permanent supply of electricity to consumers from these energy sources cannot be ensured.
This is necessary since in the prior art there is insufficient torque for running up the pump under load.
This furthermore represents a considerable load on the pump since, when the water is let in, a strong pulse is transmitted to the pump, as a result of which wear on the pump parts is increased.
Said pole switches are involved and cost-intensive in terms of manufacture and maintenance.
The operation of a pumped-storage power plant is therefore very complex and time-consuming.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014]This object is achieved by a method for runup in turbine operation as claimed in claim 1, a method for runup in pump operation as claimed in claim 2, a method for operating a pumped-storage power plant as claimed in claim 3 and an electric unit for a pumped-storage power plant as claimed in claim 4. Further advantageous configurations result from the dependent claims, wherein the back-reference in the claims does not rule out any other expedient combinations of claims.
[0015]In this case, the invention provides a method for runup in turbine operation of an electric unit for a pumped-storage power plant. The pumped-storage power plant comprises a rotating electric synchronous machine and a frequency converter, wherein the machine is connectable to a turbine and a pump or a combined pump turbine. Furthermore, the machine is connectable to an electric grid via the frequency converter. In this case, the method provides for the frequency converter to be used for runup of the turbine...
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
Login to View More Abstract
A pump-storage power plant, such as an electric unit, for this purpose can include a rotating electric synchronous machine and a frequency converter as well as a method for operating the electric unit. An exemplary method provides that the frequency converter is used to start the turbine and an output of the electric machine is fed directly into the current network after start-up, for example. Another exemplary method provides that the frequency converter is used to start the pump and the pump is started directly from rest and under load of a flooded pump or a water column, for example. Another exemplary method provides that the electric machine is synchronised with a frequency of the current network and is operated synchronously with the current network independent of the operating state of the pump or the turbine and supplies active power and reactive power.
Description
TECHNICAL FIELD[0001]The invention relates to a pumped-storage power plant, in particular to an electric unit therefor, comprising a frequency converter and a rotating electric synchronous machine and method for operating the electric unit.PRIOR ART[0002]Regenerative energy sources such as, for example, wind energy and solar energy provide a continuously increasing proportion of the electricity demand. These energy sources do have discontinuous operating times. Therefore, a direct and permanent supply of electricity to consumers from these energy sources cannot be ensured. For this, energy stores need to be used which enable rapid changes between a surplus of electricity and a deficit of electricity and whose power and energy flow direction can be changed quickly and continuously.[0003]In this case, there are different systems available as energy stores which are in each case particularly suitable for specific quantities of energy and application cases. For low quantities of energy ...
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
Login to View More Patent Type & AuthorityApplications(United States)
IPC IPC(8): F03B13/06H02P9/08F01D19/00H02P9/04
CPCF03B13/06F01D19/00H02P9/08H02P9/04H02P27/14H02H7/04H02P1/52H02J3/42H02P25/024Y02E10/20Y02E60/16Y02P80/10H02J3/36H02K7/1807H02P9/00H02P25/022H02H3/02
InventorSTEPHAN, CARL-ERNSTSCHAUB, CHRISTOPHHILLBERG, CLAESTRAXLER-SAMEK, GEORG
OwnerABB TECH AG