IEC 61850-2:2003 pdf download.Communication networks and systems in substations
2.6 bay
a substation consists of closely connected sub parts with some common functionality.Examples are the switchgear between an incoming or outgoing line, and the busbar, the bus coupler with its circuit breaker and related isolators and earthing switches, the transformer with its related switchgear between the two busbars representing the two voltage levels. The bay concept may be applied to 1%2 breaker and ring bus substation arrangements by grouping the primary circuit breakers and associated equipment into a virtual bay. These bays comprise a power system subset to be protected, for example a transformer or a line end, and the control of its switchgear that has some common restrictions such as mutual interlocking or well-defined operation sequences. The identification of such subparts is important for maintenance purposes (what parts may be switched off at the same time with minimum impact on the rest of the substation) or for extension plans (what has to be added if a new line is to be linked in).These subparts are called 'bays' and may be managed by devices with the generic name 'bay controller' and have protection systems called 'bay protection'.
The concept of a bay is not commonly used in North America. The bay level represents an additional control level below the overall station level [IEC 61850-1]
2.7 bay level functions
functions that use mainly the data of one bay and act mainly on the primary equipment of that bay. Bay level functions communicate via logical interface 3 within the bay level and via the logical interfaces 4 and 5 to the process level, i.e. with any kind of remote input/output or with intelligent sensors and actuators
EXAMPLES Feeder or transformer, protection, control and interlocking.[IEC 61850-5]
2.15 configuration list
overview of all compatible hardware and software versions of components and lEDs, including the software versions of relevant supporting tools, operating together in a SAS product family.
Additionally, the configuration list details the supported transmission protocols for com-munication with IEDs of other manufacturers [IEC 61850-4]
2.16 conformance test
check of data flow on communication channels in accordance with the standard conditions concerning access organization， formats and bit sequences, time synchronization, timing,signal form and level and reaction to errors. The conformance test can be carried out and certified to the standard or to specifically described parts of the standard. The conformance test should be carried out by an ISO 9001 certified organisation or system integrator
[IEC 61850-4]
2.17 connection
association established between functional units for conveying information. A connection is established between two IEDs prior to any data exchange. A connection may be of short duration or long term [IEC 61850-3].IEC 61850-2 pdf download.