ABB Relion 670 Series Applications Manual page 552

Section 21
Station communication
Function block type
GOOSEINTRCV
GOOSEMVRCV
GOOSESPRCV
GOOSEVCTRRCV
GOOSEXLNRCV
Application
The GOOSE receive function blocks are used to receive subscribed data from the GOOSE
protocol. The validity of the data value is exposed as outputs of the function block as well as
the validity of the communication. It is recommended to use these outputs to ensure that only
valid data is handled on the subscriber IED. An example could be to control the external
reservation before operating on a bay. In the figure below, the GOOSESPRCV is used to receive
the status of the bay reservation. The validity of the received data is used in additional logic to
guarantee that the value has good quality before operation on that bay.
GOOSESPRCV
Block
DataValid
CommValid
IEC16000082 V1 EN-US
Figure 263: GOOSESPRCV and AND function blocks - checking the validity of the received
21.3 IEC/UCA 61850-9-2LE communication protocol
21.3.1 Introduction
Every IED can be provided with communication interfaces enabling it to connect to the
process buses in order to get data from analog data acquisition units close to the process
(primary apparatus), commonly known as Merging Units (MU). The protocol used in this case is
the IEC/UCA 61850-9-2LE communication protocol.
The IEC/UCA 61850-9-2LE standard does not specify the quality of the sampled values. Thus,
the accuracy of the current and voltage inputs to the merging unit and the inaccuracy added
by the merging unit must be coordinated with the requirement for the actual type of
protection function.
Factors influencing the accuracy of the sampled values from the merging unit are, for example,
anti aliasing filters, frequency range, step response, truncating, A/D conversion inaccuracy,
time tagging accuracy etc.
In principle, the accuracy of the current and voltage transformers, together with the merging
unit, will have the same quality as the direct input of currents and voltages.
The process bus physical layout can be arranged in several ways, described in Annex B of the
standard, depending on what are the needs for sampled data in a substation.
546
AND
Spout Input1
Input2 Noput
Input3
Test Input4
data
© Copyright 2017 Hitachi Power Grids. All rights reserved
Data Type
Integer
Analog value
Single point
VCTR signals parallel mode
Switch status
AND
out Input1
Input2 Noput
Input3
Input4
1MRK 511 401-UEN Rev. K
GUID-808177B7-02CA-40DF-B41B-8B580E38478B v1
out
Ext_Res_OK_To_Operate
IEC16000082=1=en.vsd
Bay control REC670
Application manual
SEMOD172279 v3
SEMOD166571-1 v2
SEMOD166590-5 v7