Ulf Gunnar Andersson
Engineers in Raleigh, NC
License number
Utah 6657826-2202
Issued Date
Jun 21, 2007
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
Raleigh, NC
Professional information
Technical Manager - Grid Systems At Abb Power Systems
Location:
Raleigh-Durham, North Carolina Area
Industry:
Electrical/Electronic Manufacturing
Director Of Engineering At Abb
Location:
Raleigh-Durham, North Carolina Area
Industry:
Electrical/Electronic Manufacturing
Method And Apparatus For Mitigation Of Dynamic Overvoltage
US Patent:
8411400, Apr 2, 2013
Filed:
Feb 26, 2008
Appl. No.:
12/528248
Inventors:
Ulf Andersson - Raleigh NC, US
Hans Bjorklund - Ludvika, SE
John Daniel - Apex NC, US
David Dickmander - Raleigh NC, US
Hans Bjorklund - Ludvika, SE
John Daniel - Apex NC, US
David Dickmander - Raleigh NC, US
Assignee:
ABB Technology AG - Zurich
International Classification:
H02H 3/00
US Classification:
361 62, 361 65
Abstract:
A distribution and power transformer has its primary connected to the high voltage bus of the network and its secondary connected to a switching device. Upon the occurrence of a condition known to cause a dynamic overvoltage (DOV) and the occurrence of the DOV, a control system causes the switching device to change from a nonconductive mode to a conductive mode in less than the time for one cycle of the operating frequency of the AC network. This change in switching device conduction places a short circuit across the transformer secondary and thus mitigates the DOV.
System And Method For Marketing And Developing A Custom Substation
US Patent:
2008009, Apr 24, 2008
Filed:
Oct 23, 2006
Appl. No.:
11/551896
Inventors:
Krassimir G. Kutlev - Cary NC, US
Richard L. Auerweck - Holly Springs NC, US
Ernst Scholtz - Raleigh NC, US
Ulf G. Andersson - Raleigh NC, US
Richard L. Auerweck - Holly Springs NC, US
Ernst Scholtz - Raleigh NC, US
Ulf G. Andersson - Raleigh NC, US
International Classification:
G06F 9/44
US Classification:
705 7
Abstract:
A computer implemented method of marketing an electricity distribution and transmission substation to a customer by a substation vendor. The method includes collecting functional information relating to intended use and location of the substation. The method also includes identifying at least one substation configuration from a database of plural substation configurations, where the identified substation configurations have at least some suitability for satisfying the collected functional information. The identification is made by an expert system that matches the functional information with predetermined characteristics of each of the plural substation configurations.