FRCC 2007 SYSTEM OPERATOR TRAINING SEMINARS. Reliability Coordinator Processes and Tools

Transcription

1 FRCC 2007 SYSTEM OPERATOR TRAINING SEMINARS Reliability Coordinator Processes and Tools

2 Objectives Describe how the FRCC Security Process addresses planning/coordination of the Bulk Electric System Describe the tools used by the Real-Time and Next-Day Reliability Coordinators Describe several typical transmission issues and the possible mitigations steps that are available

3 FRCC Security Process Plan to insure the reliability of the FRCC Bulk-Power Electric System Describes responsibilities and authorities of all FRCC operating entities Reliability Coordinator agents OPC, Real time RC, SCEC Balancing Authorities Transmission Operators IPPs,, Power Pools, Non-utility gens,, etc.

4 FRCC Security Process PLANNING TIMEFRAMES AND FUNCTIONS FRCC Operations Planning Coord.. (OPC) Seasonal Studies Month and Week Ahead Studies Next-Day reliability analysis Uses Florida Transaction Mgt. System (FTMS) Real-Time Reliability Coordinator System monitoring of FRCC wide area view Perform Contingency Analysis Develop and implement congestion management strategies

5 Operations Planning Coordinator Responsibility (OPC) Perform operational planning 1 week to 1 year Ensure FRCC system adequately modeled and studied to ensure reliability Conduct conference calls to review reliability analysis Authority Request required operational data Direct changes to planned transmission outages Request changes to generation outages Call emergency FRCC Operating Committee meeting

6 Florida Transaction Mgt. System FTMS is the main vehicle for Reliability Data Sharing Transmission Line outage lists Generation outage lists Generation unit de-ration data Reactive Element outage list Daily Capacity Assessment Inadvertent Accounting Text Messaging NERC SDX hourly updates

7 THE NEXT 12 MONTHS FRCC OPC Seasonal Studies Performed by Progress Energy - Florida FRCC Generation Outage Schedule FRCC Transmission Line Outage Report Off line PSSE studies with all major contingencies within FRCC and Southern 230 kv facilities, major generation units Run at expected seasonal load levels All outage data provided to the FRCC via Florida Transaction Management System

8 THE NEXT MONTH FRCC OPC 28 day Studies Performed by Progress Energy - Florida FRCC outage data via Florida Transaction Management System (FTMS) All BA/TOPs studied concurrently Study next 7 days and 28 days (PSSE) Weekly ROG only conference calls Discuss possible mitigation strategies Authority outlined in Security Process

9 NEXT DAY FRCC NEXT DAY RELIABILITY COORDINATOR (OPC) Performed by FPL Trans. Scheduler FRCC outage data via FTMS All control areas studied concurrently EMS based Power flow and Contingency Analysis studies Based on real time system configuration Cross check merchant plant generation Real Time RC contingency and violation lists Contingency List All 230 kv facilities, 100 MW generators Violation List All 115 kv facilities Exceptions List Lower voltage contingencies and violations Control Area conference calls daily as needed Authority outlined in Security Process

10 Next Day Reliability Case ICCP System Data Retrieval FTMS Transmission and Generation Outage Data in prior to 13:00 Use real time state estimator base case Update model with all known system topology and outage information data Generation economic dispatch Base Case Power Flow Contingency Analysis

11 REAL TIME FRCC Reliability Coordinator Performed by FPL System Operator Real Time data via FRCC RDL and NERC ISN Comprehensive State Estimator of FRCC Reliability Area and Southern RC area EMS based Power flow and contingency analysis software (Full cycle in 5 min.) Contingency List All 230 kv facilities, 100 MW generators Violation List All 115 kv facilities Exceptions List Lower voltage contingencies and violations Utilize FRCC Hotline for conf. calls in real time Authority outlined in Security Process

12 System Model and Contingency Analysis Reliability Area model System topology data FRCC Wide Area view displays FRCC company system displays ICCP data State Estimator model Basis for all reliability tools Feeds Power Flow and Contingency Analysis

13 Reliability Area Model

14 COMPANY OVERVIEWS

15 STATION ONE LINES

16 ICCP DATA

17 SINGLE BREAKER STATUS

18 SINGLE BREAKER STATUS

19 SINGLE BREAKER STATUS

20 FRCC Flowgates Overview Quick navigation buttons Visualization Tools

21 FRCC 500 KV Lines Overview Line statuses are linked to telemetry data Visualization Tools

22 FRCC Voltage Profile Overview Visualization Tools

23 Load, ACE, & Reserves Overview Visualization Tools

24 FRCC Frequency Profile Overview The The FRCC FRCC uses uses frequency monitoring points points Visualization Tools

25 FRCC Nuclear Units Overview Visualization Tools

26 FRCC Generation Units Overview Visualization Tools

27 Generation Summary by Balancing Area Includes info on reactive device status for the BA/TOP Area Visualization Tools

28 State Estimator Inputs Detailed system topology model Coordinated among entities System element connectivity Data Exchange Working Group process Required system measurements Bus voltage magnitudes Real and reactive power flows Real and reactive power injection measurements (generation and load) Topology of the system (breaker status) Transformer tap positions

29 State Estimator Solution Uses iterative process to solve for all data values in network model Assigns confidence factors to every measurement and solution value Anomaly detection discards bad data values Solution accuracy Maximum mismatch 100 MW Solution used as starting point for Contingency Analysis process

30 Real Time Contingency Analysis Basic Inputs and Execution Control Limits observed per FRCC Security Process Monitor 500 kv at 100% of applicable rating Monitor 138kV 230 kv at 110% of applicable rating Monitor 115 kv at 120% of applicable rating Contingency List (available on FRCC ROG site) All 230 kv or greater facilities, Generators > 100 MW, lower voltage facilities on FRCC ORS exception list (6 lines) Violation List (available on FRCC ROG site) All 115 kv or greater facilities, lower voltage facilities on FRCC ORS exception list (none currently) Generating Units All FRCC units modeled per RDL data (limits, capabilities, etc.) Reactive resources Manual and automatic devices modeled and switched for contingencies

31 Real Time Contingency Analysis Solution/Output Violation Types Branch overloads Voltage violations Phase angle pair violations Interface or flowgate limits SCS/FRCC transfer Modeled to maintain solution accuracy across interface Non-Converging Solutions Three levels of non-convergent solutions Manual Shunt switching Generating Unit VAR Limit expansion Multiple Branch Contingencies Saved Case library

32 Application Slides Demonstration of real time contingency analysis program Use of Power Flow application in developing and verifying mitigation plans Solution iteration to arrive at acceptable operating states

33 Contingency Analysis Output Pre and post contingency values are shown for each contingency Post contingency values from a previous CA solution are also shown so that the operators could track the progression of severity

34 Power Flow Application Real Time case retrieval or Update day Ahead saved case studies Verify mitigation plans for real time congestion management Operator updates network topology with proposed mitigation steps Output and solution Complete network power flow and FRCC contingency analysis output Allows for iterative mitigation plan modeling

35 Typical Transmission Issue Loss of one Riviera Plumosus 138kV line will overload the adjacent 138kV line One Riviera unit online, Loaded at 85 MW (rated MW)

36 Contingency Analysis Output

37 Communication between Reliability Coordinator and Transmission Operator(s) Contact should be made between the RC and the TOP to discuss the contingency / violation (via State Hotline) What is the mitigation plan for this contingency? (there could be multiple solutions) Does the mitigation plan work? (to be verified by the RC) Does the mitigation plan cause other real time or contingency issues?

38 What are the possible solutions?

39 Base case Power Flow solution with Plumosus Monet 138kV line section out

40 PF Transline display

41 Possible Solution #1 Generation Re-dispatch - Increasing the Riviera generation to 280 MW

42 Possible Solution #2 Transmission Reconfiguration Open line #2 at Riviera

43 Does the mitigation plan cause other Contingency problems on the system?

44 Typical Transmission Issue Loss of Sampson Switzerland 230kV will overload parallel 138kV lines Loss of various parallel circuits will overload Sampson Millcreek 230kV line which is preloaded at 93% One Putnam unit online, Loaded at 85 MW (rated MW)

45 Contingency Analysis output with one unit at Putnam and high imports into Florida

46 Pre-contingency Conditions Lines looped Duval - GCS Lines looped Loaded at 92%

47 Base case violations with Duval Green Cove Springs 230kV line section out

48 Post-contingency Conditions - Loss of Duval GCS 230kV Line section open Loaded at 117%

49 Possible Solution? Power flowing to Duval

50 Close N.O. at Seminole Power flowing to Putnam

51 Post-contingency Conditions Breakers closed at Seminole N.O. Breaker closed Line section open Loaded at 85%

52 Contingency Analysis output with one unit at Putnam and high imports into Florida

53 Loss of Putnam Hudson 230kV Line section open Loaded at 113%

54 Base case violations with Putnam Hudson 230kV line section out

55 Possible Solution? 236 MW flowing to Putnam

56 Close N.O. at Rice 417 MW flowing to Putnam

57 Post-contingency Conditions Breakers closed at Rice Line section open N.O. Breaker closed Loaded at 92%

58 Contingency Analysis output with one unit at Putnam and high imports into Florida

59 Post-contingency Conditions - Loss of Duval Poinsett 500kV 500 kv Line open Loaded at 116%

60 Close N.O. at Rice N.O. Breaker closed Loaded at 100%

61 Contingency Analysis output with one unit at Putnam and high imports into Florida

62 Pre-contingency Conditions Heavy flow on 230kV circuit Light flow on 138kV circuits

63 Post-contingency Conditions - Loss of Sampson - Switzerland 230kV 230kV Line Open Heavy flows on 138kV circuits

64 Post-contingency Conditions - Loss of Sampson - Switzerland 230kV

65 Post-contingency with Sampson - Millcreek 230kV line open No base case violations for first contingency with switching solution

66 Other possible solutions - Putnam loaded at 250 MW (No switching) Unit Loaded at 250 MW Loaded at 74%

67 Contingency Analysis output with one unit at Putnam (loaded at 250MW) and high imports into Florida

68 Questions?