METHOD AND SYSTEM FOR PROVIDING VOLTAGE SUPPORT TO A LOAD CONNECTED TO A UTILITY POWER NETWORK

WIPO Patent Application WO2001082438

A3

A voltage recovery system and its method of operation provides voltage protection to a load connected to a distribution network of a utility power system or network by boosting the voltage on a distribution line, during a momentary voltage sag caused by a fault or other contingency. The method includes voltage protection from a voltage recovery system to a load connected to a distribution network of a utility power network. A voltage protection characteristic required by the load is selected. On the basis of electrical characteristics of the voltage recovery system and the distribution network, a determination is made as to whether the voltage recovery system is capable of providing the required first voltage protection characteristic. Determining whether the voltage recovery system is capable of providing the required voltage protection characteristic includes determining a fault current capability characteristic of the distribution network and the maximum voltage improvement characteristic that the voltage recovery system can provide. If the voltage protection characteristic is greater than the maximum voltage improvement characteristic, the fault current capability characteristic and the maximum voltage improvement characteristic are used to determine an impedance in the form of an inductor to be added to the distribution network.

KEHRLI ARNOLD P
NELSON BRADLEY D

PCT/US2001/012957

March 14, 2002

April 23, 2001

Click for automatic bibliography generation  

AMERICAN SUPERCONDUCTOR CORP (US)

H02J3/12; H02J3/18; H02J3/24; H02J15/00; H02M7/48; H02M7/493; (IPC1-7): H02J3/12; H02J15/00

FR2766635A1	1999-01-29
US5642000A	1997-06-24
US6025701A	2000-02-15
FR2604569A1	1988-04-01
US5514915A	1996-05-07
EP0552955A1	1993-07-28

View/Download PDF      PDF Help

Previous Patent: METHOD AND APPARATUS FOR DETECTING GROUND FAULT CURRENT

Next Patent: UNDERVOLTAGE RELEASE