Transmission or Distribution. Phil Collins March 18, 2005

Transcription

1 Transmission or Distribution Phil Collins March 18, 2005

2 CUSC Principles of Ownership Power Station Busbar clamp on busbar side of busbar isolators on generators circuit Distribution System Busbar clamp on busbar side of busbar selector isolator on distribution circuit If no busbar exists, an equivalent isolator If no isolator exists, an agreed bolted connection at or adjacent to the tee point Non-Embedded Customer Clamp on circuit breaker side of cable disconnections at User s substation

3 Overview Transmission Connection Boundary Definition: Shareable or potentially shareable assets classed as Infrastructure s and associated site infrastructure and land classed as Transmission Infrastructure Generation only Spurs are Transmission Infrastructure Shared substations where National Grid or s own the busbars and transformer circuits connecting shared LV substations are Infrastructure Grid Supply Points DNO has no right of export Embedded Connections Non Contiguous Connections

4 Transmission Connection Examples

5 Single DNO T Connection Demand Distributor Owned Connection Boundary Owned 132kV, 275kV or 400kV Infrastructure

6 Single T Connection ~ LV Owned User Owned Owned 132kV, 275kV or 400kV Infrastructure

7 Shared T Connection Demand ~ Shared LV Owned User Owned Owned 132kV, 275kV or 400kV Infrastructure

8 Generation and Demand Connection Demand Distributor Owned Connection Boundary User Owned ~ Owned 132kV, 275kV or 400kV Infrastructure

9 Generation Only - Non Spur Connection Infrastructure ~ Owned 132kV, 275kV or 400kV ~ Generator Infrastructure

10 Generation Only Spur (Turn in) ~ Generator Owned 132kV, 275kV or 400kV Infrastructure

11 Generation Only Spur (Remote sub) ~ Generator Owned 132kV, 275kV or 400kV Infrastructure

12 Generation Only Spur (Tee) ~ Generator Owned 132kV, 275kV or 400kV Infrastructure

13 Distribution Connection Examples

14 DNO Connection with embedded generation and demand Demand ~ Distributor Owned DNO Connection Boundary National Grid 132kV, 275kV or 400kV Infrastructure

15 DNO Connection with embedded generation and demand Demand ~ Distributor Owned Distributor Owned DNO Connection Boundary National Grid 132kV, 275kV or 400kV

16 DNO Connection with embedded generation and demand Demand ~ Distributor Owned DNO Connection Boundary Distributor Owned National Grid 132kV, 275kV or 400kV

17 Connection Example

18 What am I? No Demand enerator ~ Distributor Owned Connection Boundary Owned 132kV, 275kV or 400kV Infrastructure

19 Application Process - Transmission

20 Transmission Application Process Applications Customer NGC (GBSO) Host Affected

21 Transmission Application Process Offers Host GBSO Customer Affected

22 Transmission Application Process Offer Acceptance Host Customer GBSO Affected s

23 Transmission Application Process Summary User makes application GBSO makes an NGC Construction Application if required make Construction Offer (CO) if works are required GBSO makes Offer to Customer Customer signs and returns Offer GBSO signs Offer and CO GBSO returns Construction Agreement

24 Application Process - Embedded

25 Embedded Application Process Summary Embedded Generator NGC (GBSO) Host DNO Affected

26 Embedded Application Process Key Attributes BEGA User Applies NGC Construction Application Construction Offer (null) BEGA Gets Construction Agreement and Bilateral Agreement NGC makes Mod Notice to DNO (possible CONSAG) BELLA User and DNO Applies NGC Construction Application Construction Offer (null) BELLA gets Bilateral Agreement and DNO gets Construction Agreement