Teleprotection Inputs And Outputs - GE D90 Plus Instruction Manual

Line distance protection system

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PROTECTION INPUTS AND OUTPUTS

Teleprotection inputs and outputs

Figure 337: Direct output configuration settings

The following settings are available for all direct outputs. The default values shown

correspond to direct output 1.

Direct Input 1 Operand

Range: any FlexLogic™ operand

Default: Off

This setting specifies the FlexLogic™ operand that determines the state of the direct

Direct Input 1 Events

Range: Enabled, Disabled

Default: Disabled

This setting enables and disables the logging of direct output events in the sequence of

events recorder.

provides 16 teleprotection inputs on communications channel 1 (numbered 1-

1 through 1-16) and 16 teleprotection inputs on communications channel 2 (on two-

terminals two-channel and three-terminal systems only, numbered 2-1 through 2-16). The

remote relay connected to channels 1 and 2 of the local relay is programmed by assigning

FlexLogic™ operands to be sent via the selected communications channel. This allows the

user to create distributed protection and control schemes via dedicated communications

channels. Some examples are directional comparison pilot schemes and direct transfer

tripping. It should be noted that failures of communications channels will affect

teleprotection functionality. The teleprotection function must be enabled to utilize the

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

CHAPTER 7: PROTECTION