GE Multilin D30 Line Distance Protection System 5-1895 SETTINGS 5.7 CONTROL ELEMENTS5The SETTING GROUPS BLK setting prevents the active setting group from changing when the FlexLogic parameter is set to"On". This can be useful in applications where it is undesirable to change the settings under certain conditions, such as thebreaker being open.The GROUP 2 ACTIVATE ON to GROUP 6 ACTIVATE ON settings select a FlexLogic operand which, when set, will make the par-ticular setting group active for use by any grouped element. A priority scheme ensures that only one group is active at agiven time – the highest-numbered group which is activated by its ACTIVATE ON parameter takes priority over the lower-numbered groups. There is no activate on setting for group 1 (the default active group), because group 1 automaticallybecomes active if no other group is active.The SETTING GROUP 1 NAME to SETTING GROUP 6 NAME settings allows to user to assign a name to each of the six settingsgroups. Once programmed, this name will appear on the second line of the GROUPED ELEMENTS SETTING GROUP 1(6)menu display.The relay can be set up via a FlexLogic equation to receive requests to activate or de-activate a particular non-default set-tings group. The following FlexLogic equation (see the figure below) illustrates requests via remote communications (forexample, VIRTUAL INPUT 1 ON ) or from a local contact input (for example, CONTACT IP 1 ON ) to initiate the use of a particu-lar settings group, and requests from several overcurrent pickup measuring elements to inhibit the use of the particular set-tings group. The assigned VIRTUAL OUTPUT 1 operand is used to control the “On” state of a particular settings group.Figure 5–100: EXAMPLE FLEXLOGIC CONTROL OF A SETTINGS GROUP101 VIRT IP 1 ON (VI1)2 CONT IP 1 ON (H5A)3OR (2)OR (2)4 PHASE TOC1 PKP5 NOT6 PHASE TOC2 PKP7 NOT8AND (3)AND (3)9= VIRT OP 1 (VO1)= VIRT OP 1 (VO1)END 842789A1.CDR
