EVALUATING OPTIONS FOR PRC-027-1 COMPLIANCE Joe Perez, P.E. Luke - PowerPoint PPT Presentation

EVALUATING OPTIONS FOR PRC-027-1 COMPLIANCE Joe Perez, P.E. Luke Hankins, EIT Founder - Protection Engineer Protection Engineer jperez@synchrogrid.com lukeh@synchrogrid.com SynchroGrid SynchroGrid Nathan Thomas, Ph.D Software Architect nthomas@synchrogrid.com SynchroGrid Presented at the 72 nd Annual Texas A&M Conference for Protective Engineers

2 Presentation Outline • Introduction • PRC-027-1 Requirements • Establishing a Setting Development Process per R1  Manual Process  Automated Process • Break • Establishing a Wide Area Coordination Process per R2  Manual Process  Automated Process • Conclusions

3 Introduction SynchroGrid is a Texas-based company that offers electric utilities professional innovative solutions in a wide range of services related to relaying in the generation, transmission, and distribution areas. • Located in College Station, TX • Employs 15 at the College Station office including Electrical and Software Engineers • Customers: Oncor Electric, NRG, LCRA, BTU, Cross Texas, Entergy, Sharyland Utilities, Pattern Energy, and others

4 Introduction Core Focus • Protection & Control for Transmission and Generation: Relay and Panel Design  Relay Setting Development (Primary Product)  Relay Setting Coordination Studies (Primary Product)  Third Party Review of Relay Settings  Automation of System Protection Processes  • NERC: Compliance Verification (Relay settings and PRC compliance go hand in hand):  - PRC-002, PRC-019, PRC-023, PRC-024, PRC-025, PRC-026, PRC-027, etc. NERC Mis-Operation Analyses Reporting  Achieving Simplicity in System Protection is a bedrock of our services 

5 PRC-027-1 • Purpose: “To maintain the coordination of protection systems installed to detect and isolate faults on BES elements, such that those protective systems operate in the intended sequence during faults.”  R1: Establish a process for developing new and revised settings. Process shall include:  R1.1 Review of short circuit model before settings are developed  R1.2 Review of protection settings  R1.3 Communication with interconnecting utilities prior to setting implementation  R2: Perform a protection system coordination study:  Option 1: Wide Area Coordination Study every six years  Option 2: Establish a fault base comparison baseline and perform a study every time the current exceeds 15%  Option 3: Use a combination of above  R3: Apply R1

6 PRC-027-1 • Dates:  R1: October 1, 2020  R1. Process to develop relay settings  R1.1 Process review short circuit model before settings are developed  R1.2 Process to review new developed protection settings  R1.3 Process to communicate with interconnecting utilities prior to setting implementation  R2: Six years after October 1, 2020  Option 1: Wide Area Coordination Study every six years  Option 2: Establish a fault base comparison baseline and perform a study every time the current exceeds 15%  Option 3: Use a combination of above

7 PRC-027-1 • Challenges to utilities  Perform periodic reviews of entire system relay settings  Coordination studies Requires in-depth examination of short circuit case information   Enormous undertaking  Field settings might not be in current relay setting database  ASPEN database, PowerBase, etc.  Implementing processes might require more resources and external expertise Time consuming, laborious, expensive   Adds immense task to already depleted staff  Learning curve to accept new process

8 PRC-027-1 • Considerations for R1.  Implement time and cost efficient processes. This could be:  Automation of relay setting calculations  Automation of relay setting reports  Automation of NERC related reports  Application of relay and calculation setting templates  Eliminate processes with a lot of data entry  Copy and Paste  Choose software solutions that can communicate bi-directionally with short circuit and relay databases  ASPEN/CAPE-PowerBase-SARA  Good processes will keep engineers happy and therefore retain talent

9 PRC-027-1 - A solid process must be implemented whether it is manual or automated

10 R1. Relay Setting Development Process A good, solid process contains: • Accurate model -Accurate • Well defined protection philosophy model - Well established • Solid set of relay native file templates protection philosophy • Solid set of calculation sheet Relay templates - Solid set of Development native file templates • Rigorous review process Process - Solid set of calculation - Rigorous templates review process

11 R1. Relay Setting Development Process Accurate Model • Identify where the accurate data resides -Accurate model  Drawings, reports, databases, etc. - Well established protection philosophy • Update short circuit case through data sharing: Relay - Solid set of Development native file  Line database repository templates Process  Relay database repository - PowerBase  Short circuit case repository – ASPEN/CAPE - Solid set of • Fix issues as needed before settings calculation - Rigorous templates are developed. review process

12 R1. Relay Setting Development Process Well Established Protection Philosophy -Accurate • Specific details on how settings are model - Well established supposed to be calculated protection philosophy  50/51, 21, 87T, 87B, 87L, etc.  Communication schemes: POTT, DCB Relay - Solid set of Development native file • Outline special cases templates Process  Reclosing  Wind interconnections - Solid set of  Nuclear interconnections calculation - Rigorous templates • Must integrate NERC Compliance review process  PRC-023, PRC-027  PRC-019, PRC-024, PRC-025, Limiters

13 R1. Relay Setting Development Process Solid Set of Native File Templates • Relay files with preconfigured settings -Accurate  Most settings are preconfigured model  Enables: 21-1, 21-2, 21-3, no reclosing or BF - Well established protection philosophy  Protection logic • Reduces development time by > 50% Relay - Solid set of • Reduces human errors Development native file templates Process • Allows uniformity and consistency across the system - Solid set of • Create templates per protection calculation - Rigorous templates review scheme process  POTT  DCB

14 R1. Relay Setting Development Process Solid Set of Calculation Templates -Accurate • Contains all equations as stated by model - Well established the protection philosophy protection philosophy  Zone 1= 80% *Zpl*Base-ohms*(CTR/PTR)  SOFT = 50%*Close-in Fault/CTR Relay - Solid set of Development native file  51G = 80%*line-end fault templates Process • Implements uniformity across the system - Solid set of • Avoid engineers making multiple calculation - Rigorous templates review calculation sheets per philosophy process • Reduces human errors

15 R1. Relay Setting Development Process Solid Set of Calculation Templates -Accurate • Template mediums model - Well established  Mathcad protection philosophy  Excel  Word Relay - Solid set of  Intelligent templates through automation Development native file templates Process • Challenges  Time consuming - Solid set of  Right expertise needed calculation  Continuous maintenance - Rigorous templates review • Mathcad, Word and Excel templates process can introduce errors through copy/paste process

16 R1. Relay Setting Development Process Rigorous Review Process • Employ a peer-peer review process -Accurate  Separate engineer model  Limit input from original engineer - Well established protection philosophy • Uncover errors  Model Relay - Solid set of  Calculations Development native file templates  Faults Process  Settings • Time consuming - Solid set of calculation • Use automation programs as - Rigorous templates review process reviewers  Faster  Reliable  Accurate

17 USING AUTOMATION TO DEVELOP AND REVIEW RELAY SETTINGS PRC-027-1 Requirement 1

18 Why Automate? • Bi-directional communication  relay data repositories  short circuit programs • Provides intelligent setting calculation templates  Stores protection philosophy  Applies template to any transmission configuration • Automates NERC Compliance Reports • PRC-023-1 • Uniformly applies protection philosophy on every project

19 Why Automate? • Provides smooth and efficient process  Minimum manual data gathering  No copy and paste steps • Reduces development time  Medium complex applications >60% • Eliminates copy/paste errors  ASPEN-Excel/Mathcad-RDB-Reports • Assures integrity and quality of final results  Data is not polluted • Keeps engineers engaged and not frustrated with broken processes

20 Relay Setting Development Simplified Process - Automation Data Repositories ASPEN/CAPE Data Fault Simulation Collect • Primary Line Impedance • Closed-In • Source, Remote, and Tap Lines • Line-End Data • Auto & Distribution XFMRs • Contingencies Bi-directional SARA Intelligent Template Template Application Export Feature Relay Setting File