Global Patent Index - EP 0944945 A4

EP 0944945 A4 2000-08-16 - IMPROVEMENTS RELATING TO SIGNALLING IN ELECTRICITY DISTRIBUTION SYSTEMS

Title (en)

IMPROVEMENTS RELATING TO SIGNALLING IN ELECTRICITY DISTRIBUTION SYSTEMS

Title (de)

VERBESSERUNGEN BEZÜGLICH DER SIGNALÜBERTRAGUNG IN ELEKTRIZITÄTSVERTEILUNGSSYSTEMEN

Title (fr)

PERFECTIONNEMENTS PORTANT SUR LA SIGNALISATION DANS DES SYSTEMES DE DISTRIBUTION D'ELECTRICITE

Publication

EP 0944945 A4 (EN)

Application

EP 97913551 A

Priority

  • NZ 9700156 W
  • NZ 29975696 A

Abstract (en)

[origin: WO9821803A2] An electricity supply system in which a control organisation creates variations of the fundamental frequency of the supply in order to signal shedding or adding of loads, or to cause some other process or transmission of data. The loads are generally located at consumer premises and are able to be actuated in this fashion by prior agreement with the control organisation. Each consumer installs a frequency change decoder device to detect and interpret the signals above noise which is always present on the supply system. Each device may be installed as part of general purpose electricity metering equipment or as a separate item. The devices may also be used to detect uncontrolled frequency decays caused by a failure in the supply system and to shed loads appropriately.

IPC 1-7 (main, further and additional classification)

H02J 4/00; H02J 13/00

IPC 8 full level (invention and additional information)

H02J 13/00 (2006.01); H02J 3/14 (2006.01); H02J 3/24 (2006.01); H04B 3/54 (2006.01)

CPC (invention and additional information)

H04B 3/54 (2013.01); H04B 2203/5437 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9821803 A2 19980522; WO 9821803 A3 19980806; AU 5071598 A 19980603; EP 0944945 A2 19990929; EP 0944945 A4 20000816; JP 2001503954 A 20010321

INPADOC legal status


2001-05-30 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20001122

2000-08-16 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000704

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-08-16 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 02J 4/00 A, 7H 02J 13/00 B

1999-09-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990610

1999-09-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE