GE N60 Instruction Manual

Also see for N60: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

5-48 N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUALPRODUCT SETUP CHAPTER 5: SETTINGS5Each enabled TxGOOSE transmits its message whenever a value change is detected in one or more of its members. Toguard against the possibility that such a message is lost in the network before it reaches all subscribers, the message isquickly retransmitted several times. To allow subscribers to verify that their link to the publisher and the publisher itself arehealthy, each message is also periodically retransmitted even while the values are unchanging. These latter messages areknown as heartbeat messages, while the former are known as event messages. Heartbeat messages also provide meansfor a subscriber newly online to receive the published values in the absence of an event.TxGOOSE1 and TxGOOSE2 scan for value changes in its FlexLogic operand members as frequently as such a change canoccur. TxGOOSE1 and TxGOOSE2 are therefore suitable for highly time critical signals, such as tripping and dynamicblocking. FlexAnalog members are scanned for value changes only every 250 ms. See the Deadband Settings section laterfor a description of what is considered a value change in an analog member.The remaining TxGOOSE, meaning TxGOOSE3 and up, scan both their FlexLogic and FlexAnalog members for valuechanges every 250 ms. They are suited for control applications, such as voltage control or power factor regulation.The details of TxGOOSE message construction are contained in the UR Series Communications Guide. Knowledge of thesedetails is not required to configure GOOSE.The UR does not implement the Fixed-Length encoded GOOSE messages option specified in IEC 61850-8-1:2011 clauseA.3; the UR always uses the ASN.1 Basic encoding rules (as specified in ISO/IEC 8825-1) as specified in IEC 61850-8-1:2004and as optional in IEC 61850-8-1:2011 clause A.3. So do not try to configure the UR for fixed-offset TxGOOSE.TxGOOSENavigate to Settings > Product Setup > Communications > IEC 61850 > GOOSE > TxGOOSE > Access Points to accessthe settings that are common to all GOOSE messages published.The following settings are available.PORT1 GOOSE ENABLERange: Enabled, DisabledDefault: EnabledWhen set to Disabled, no GOOSE messages are published on N60 Ethernet port 1, and any GOOSE messages received onport 1 are ignored. When set to Enabled, all enabled GOOSE messages are published on N60 Ethernet port 1, and anyGOOSE messages received on port 1 are listened to.N60 Ethernet ports 2 and 3 each have a similar setting.TxGOOSE UPDATE TIMERange: 1 to 60 s in steps of 1 sDefault: 60 sThis setting specifies the time interval between heartbeat messages, which are messages that are sent periodicallywhile no events are detected. The standard suggests that the heartbeat time be less than (actually half) of thetimeAllowedtoLive parameter, which is set by the TxGOOSE TIME TO LIVE settings described later.Navigate to Settings > Product Setup > Communications > IEC 61850 > GOOSE > TxGOOSE > TxGOOSE1 to access thesettings for the first TxGOOSE. The settings and functionality for the others are similar.