Bill-adams-(georgia-power).pdf

Southern Company Transmission Georgia Control Center

North American Electric Reliability Corporation (NERC) Eastern Interconnect • • • •

~700,000 MWs interconnected and operated synchronously. Operations and transactions must be closely coordinated. Ability to “lean” on others aids the reliability of all participants. However, distant events can have widespread impacts.

Georgia Power Company Transmission • Transmission Lines o 46 kV & 69 kV – 3,520 miles o 115 kV – 5,553 miles o 230 kV – 2,158 miles o 500 kV – 1,100 miles

• Substations o 227 Trans. and Gen. o 1955 Distribution

• Load Data o So. Control Area: 48,000 MW o GPC: 29,800 MW

Tie Lines and Control Centers

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• Tie Lines are the transmission lines connecting electric utilities • There are 53 Tie Lines that connect Southern Company to neighboring utilities in the Southeast

Southern Company Operations • Power Coordination Center o o o o

System Balancing Authority Reliability Coordinator Monitor Interface Flows Facilitate Transmission Transactions

• Local Transmission Control Centers o o o o

Monitor and Control the Transmission System Facilitate Work Requests Local Security Restoration

• Distribution Control Centers o Monitor and Control Distribution Breakers and Feeders o Communicate with distribution customers

How Does the GCC Function? Security

Pre-Arrange process requests, write safe switching orders, communicate with personnel

study transmission work requests to ensure the work is done in a way to keep grid reliable

Support Engineers provide technical guidance as needed

Floor Operators System Operators (SO)

Area Operators

ensure reliability and security of the transmission grid in GA

monitor and control the transmission grid in GA in real-time

Desk Responsibilities • Area Desks o Monitor system conditions o Monitor and respond to alarms o Issue switching orders 1 More than 27,000 in 2010

o Respond to emergency conditions o Dispatch field personnel as needed

Desk Responsibilities Continued • System Operator Desk o Perform contingency analysis and security studies o Develop operating solutions for identified contingencies o Monitor system voltage schedule o Analyze outages and assist Area desk with restoration plans o Communicate with PCC and external entities

Other Functions • Pre-Arrange o Coordinate all work requests for facility outages 1 More than 12,000 in 2010

o Verify feasibility of work requests through System Security o Write accurate and safe switching orders o Notify all impacted parties of work requests o Compile and distribute the daily work summary

Other Functions Continued • System Security o Conduct security studies/perform contingency analysis for outage requests o Develop necessary operating solutions to facilitate major construction projects o Coordinate with Transmission Planning group to help plan to build reliable system o Conduct annual Summer Operating Study and report results

Other Functions Continued • Support Engineers o Provide technical support to other GCC groups o Collect and distribute data from the field o Verify equipment data with field personnel and other operating companies o Produce and maintain operating procedures (e.g. Blackstart) o Fault Data Analysis

Operator Tools • Energy Management System (EMS) o PNA (Power Network Analysis) –view real-time data from EMS and also perform and build case studies o OPNA (Offline PNA) – perform studies and N-1 contingency analysis o EMo (Electronic Monitor) – view real-time status to get the “big picture” quickly o Dynamic Line Rating o Fault Location

Operator Tools • Other Simulation and Viewing Tools o PowerWorld – view real-time flows, also “big picture” o PSS/E – perform studies and in-depth contingency analysis using modified planning model o TransMap o GenVarr o Situational Awareness

Operator Tools EMS Real-time Screenshot Example

Software Tools PowerWorld Real-time Screenshot Example

Operator Tools TransMap - Electronic Mimic Board BRYANT TVA

9 5

MORGANVILLE 161/46/12 KV PRE. 151

958 7

TVA Switches 161KV

151001 151006

5

9 814

9 824

9 5 858 3

5 3

3

4

1088 5

3 7

898 5

1

9

OGLETHORPE 161/12 KV

5

CRAWFISH CREEK PRE. 181

717 AIM

3 RLB 1 RLB

TVA Line

725

5

LTC 783

LTC 793

5 787

5 797

5

5

017 7 AOM 068

738 7

730 747 1 AOM

7 758

627 7 AOM 728

9

9

801

LAFAYETTE FUTURE PRE. 002 TVA 5 703 5 717 AOM

5

243 BLD

5

851 RLB

DUG GAP (NGEMC) 115/12 KV PRE. 028 5

LTC 3 5 203 BLD

917 AIM

217 RLB 201 BLD

LAFAYETTE CITY #3 115/12 PRE. 141

5 876 1

5

3

866 5 827 5

(4)981709 5 TVA SW.

3

LTC NGEMC BRISON PRE. 028 5 916

917 AIM 926 LTC 823 TRION 115/12 KV PRE. 028 LTC

5 7 5

5 263 BLD

251 RLB 217 AIM

3

553 RLB

567 AIM

019211

5 7 9 7 5 308 9

5

331

DALTON CITY #4 PRE. 028 BK B

227 AIM 203 201 RLB RLB

5

5

5

5

BK A

5

967 AIM

957 AIM

5

5

983

991 BLD

5

358 7

7

7

7

7

5

9

5

5

311 327 5 317 AOM

DALTON CITY #9 115/25 KV PRE. 033

RED

E. DALTON

WHITE

E. DALTON

BLACK

E. DALTON

9

368

310

5 017 AIM 5 051 NO

061

DALTON CITY #1 PRE. 029 A

B 027 AIM

B

A

173 RLB 019213 RLB

9

DALTON CITY #7 PRE. 126

348

3 321 DALTON PRIMARY PRE. 028

577 AIM 5

DALTON CITY #8 PRE. 112

318 214

117 7 AOM 138

5

338

5

148 5

5 DALTON CITY #10 PRE. 112

9 45 MVAR

181 5 RLB

147 AIM

9

378

RIEGEL TEXTILE (MT. VERNON MILLS) PRE. 138 551 BK 1 BLD BK 2

393 RLB

5

853 BLD

941 DALTON CITY #2 RLB SHUGART ROAD PRE. 067 5 5 953 388 BLD 9 7 5

459 NGEMC BLD 443 ROPER 431 BLD 115/12 BLD 427 9 PRE. 163 AIM

TUNNEL HILL PRE. 192

9

809

NGEMC GPC

241 PLAIN / WHIPS

713 714 723

061469 717 BLD AIM

1

803

ROCK SPRINGS 230/161/115 KV PRE. 129

381 5 BLD

5

VARNELL PRE. 153

157 AIM

027781 BLD

NGEMC HASSLER PRE. 140 5

3 5 816 AIM 1

5 501 509 RLB RLB 5 506 80 AMP

153511 BLD

726 80 AMP 717

719

5

5

5

417 7 AOM 458 9

227

217

002637 AIM

5

LINE GRD. 716

#1 LTC

9

851 BLD

809

3 826 AIM 1

9 448 5 7

A

2767 AIM

5

45 MVAR 3

061441 BLD 061453 RLB

805 BLD

5 7

9

799

859 853 RLB

A

258

153609 153519 RLB

RINGGOLD PRE. 027

002771 BLD #2 LTC

161 Meter M 5

2647 AIM

893

887 897 5 AIM 5 AIM 743 741 BLD BLD

SWITCHES IN KIKER SUB.

Line

13.0 Reactor

058 7 5

5

9

2657 AIM 5

9 9

5

NO NO #3 #2 #1 NGEMC EDWARDS 161/25/12 KV PRE. 009

TVA GPC

TVA Sw. NGEMC YOUNG (N. LAFAYETTE) 115/25 KV PRE. 002 B A

5 919

CHICKAMAUGA 115/25/12 KV (NGEMC) (GPC/TVA) PRE. 002 1A #2 1B B A LTC 763 LTC LTC LTC LTC

5 TVA

914

924 929

883

NGEMC WHITFIELD PRE. 027

3 AIM

Replaces paper & pins with electronic board

NGEMC KENSINGTON 230/25 KV

5 NC

3

5

NGEMC CATOOSA 161/12 KV PRE. 009

TVA WIDOWS CREEK 230/161 KV

791

9 NO

7

7 A 1084

938 7

9 NO

3

903 3 934

3

9 LTC

673 671 BLD BLD 5

017

5

7 006 CS/AIM

#2 LTC #1

581 BLD

3 704 AIM

709

LTC ANTIOCH ROAD PRE. 211

583 RLB

5

1 716 3 #1 LTC

5

NGEMC WHITFIELD 713 IND. PARK

1 726 NGEMC 3 CENTER POINT PRE. 033 #2 LTC

707

679 BLD 100 A

NGEMC TILTON PRE. 027

767 AOM 3

5 757 AOM B

3

717 AIM 3

A

A

5

CALHOUN #1 PRE. 027

5 727 AIM 3 LTC

B

PRE. 027

Reliability Tools • • • • • •

Weather Forecasts Lightning Tracker Fault Data Analysis Geographic Information System Summer Operating Study Sub-Transmission Automation

Weather Reports

Determine Location of Lightning Event • FALLS… Fault Analysis and Lightning Location System

Operator Tools EMS Real-time Screenshot Example

Summer Operating Database - Overload

Current Issues • • • •

Reliability Standards Cyber Security Employee Skills and Training Staffing

Questions?