| 摘要 |
In ripple-control transmitting installations, which consist of a ripple-control centre and a plurality of decentralised substations, each substation containing a ripple-control transmitter which supplies a ripple-control message into a current supply network, it is intended that the ripple-control message be supplied synchronously by the individual transmitters. The invention proposes a method for transmitting a data message from the ripple-control centre to the substations and for synchronised generation of a ripple-control message in the substations which corresponds to the data message. In this method, the data message is transmitted in the multi-point traffic from the ripple-control centre to the substations, acknowledgement of receipt of the data message is asked for and, if necessary, the data message is transmitted repeatedly. In the substations, receipt of a data message initiates the start of a delay period after which the ripple-control message is transmitted provided no countermand message, transmitted by the ripple-control centre, occurs before the delay period has elapsed. <IMAGE> |
