complying with the new versions of prc-005 · •r2 – starting and maintaining a performance...

Complying With The New Versions Of PRC-005Robert W. Kenyon, P.E. Senior Engineer, Reliability AssuranceSPP WorkshopMarch 15, 2016

RELIABILITY | ACCOUNTABILITY2

• Review PRC-005-1• Evolution of new versions of PRC-005• Review PRC-005-6• Clarifications of PRC-005-6 • Implementation Plan• Tips• Violations Noted/Best Practices• Useful References• Q & A

Presentation Outline


• When referring to PRC-005-1.1b or the legacy standards, it is generally referring to: PRC-005-1.1b — Transmission and Generation Protection System

Maintenance and Testing PRC-008-0 — Underfrequency Load Shedding Equipment Maintenance

Programs PRC-011-0 — Under Voltage Load Shedding (UVLS) System Maintenance

and Testing PRC-017-0 — Special Protection System Maintenance and Testing

• All of the above prescribe essentially the same requirements for different systems

• All of the above to be retired and consolidated into the new PRC-005 series – but through a lengthy transition

PRC-005-1


In other words, PRC-005-1 requires that:• Entities must have their own justified PS Maintenance program• Entities must document it and execute it

Keep in mind the five elements of the Protection System in the NERC Glossary.

Quick Summary of PRC-005-1


PRC-005-6 includes:• Protection System Maintenance Program (PSMP) - different

from PRC-005-1• List of mandatory minimum maintenance tasks to be performed• Mandatory maximum maintenance intervals• Mandatory tracking of unresolved maintenance issues• Specific performance-based maintenance option• Other items included: Reclosing (R/C) and R/C auxiliaries,

Sudden Pressure Relays, Dispersed Generation, etc.

PRC-005-6 Requirements –New Areas


• R1 – Address the PSMP• R2 – Starting and maintaining a performance-based

maintenance program (optional - only in play if you use performance-based maintenance)

• R3 – Maintenance using fixed, NERC-mandated intervals• R4 – Maintenance using performance-based maintenance• R5 – Unresolved Maintenance Issues

Requirements of PRC-005-6


• Protective relays which respond to electrical quantities • Communications systems necessary for correct operation of

protective functions • Voltage and current sensing devices providing inputs to

protective relays• Station DC supply associated with protective functions

(including station batteries, battery chargers, and non-battery-based DC supply)

• Control circuitry associated with protective functions through the trip coil(s) of the circuit breakers or other interrupting devices

Component Types – Protection System


• Reclosing relay • Supervisory relay(s) or function(s) – relay(s) or function(s) that

perform voltage and/or sync check functions that enable or disable operation of the reclosing relay

• Voltage sensing devices associated with the supervisory relay(s) or function(s)

• Control circuitry associated with the reclosing relay or supervisory relay(s) or function(s)

Component Types – Reclosing


• Fault Pressure Relay – a mechanical relay or device that detects rapid changes in gas pressure, oil pressure, or oil flow that are indicative of faults within liquid-filled, wire-wound equipment

• Control circuitry associated with a fault pressure relay

Component Types – Sudden Pressure Relaying


Note that the R/C requirements in PRC-005-6 are restricted to:• Reclosing on elements connected to the Bulk Electric System

(BES) bus located at generating plant substations where generating plant capacity > capacity of the largest BES unit within the Balancing Authority (BA) Area or, the largest generating unit within the reserve sharing group

• Reclosing applied on the terminals of all BES elements at subs one bus away from above generation plants when the subs < 10 circuit-miles from the generating plant substation

• Reclosing applied as an integral part of an Remedial Action Schemes (RAS)

PRC-005-6 Reclosing Systems


There are two categories of generation covered:• Protection Systems and Sudden Pressure Relaying for generator

facilities that are part of the BES, except for generators identified through Inclusion I4 of the BES definition (4.2.5)

• Protection Systems and Sudden Pressure Relaying for the following BES generator facilities for dispersed power producing resources identified through Inclusion I4 of the BES definition (4.2.6)

• Different for traditional generating facilities vs. aggregated• See BES Definition Reference Document Version 2 April 2014

for clarification

PRC-005-6 Generation Requirements


Typical Dispersed Generation Facility


Typical PRC-005-6 Table Identifying Mandatory Tasks and Intervals


Standard New Topic Area Effective• PRC-005-1.1b BES Protection System 6/18/2007• PRC-005-2 Complete Revision 4/1/2015• PRC-005-2(i) Dispersed Generation 5/29/2015• PRC-005-2(ii) Added RAS/SPS NEVER• PRC-005-3 Added Reclosing NEVER• PRC-005-3(i) Dispersed Generation NEVER• PRC-005-3(ii) RAS/SPS NEVER• PRC-005-4 Sudden Pressure Relays NEVER• PRC-005-5 Dispersed Generation NEVER• PRC-005-6 R/C Supervisory Devices &

Sudden Pressure Relays 1/1/2016

Evolution Of PRC-005 (Does Not Reflect Phase In By Requirement)


Standard New Topic Area Status• PRC-005-1.1b BES Protection System In Force till 3/31/27• PRC-005-2 Complete Revision Retired 5/29/15• PRC-005-2(i) Dispersed Generation In Force till Jan 17• PRC-005-2(ii) Added RAS/SPS Never Enforceable • PRC-005-3 Added Reclosing Never Enforceable • PRC-005-3(i) Dispersed Generation Never Enforceable• PRC-005-3(ii) RAS/SPS Never Enforceable• PRC-005-4 Sudden Pressure Relays Never Enforceable• PRC-005-5 Dispersed Generation Never Enforceable• PRC-005-6 R/C Supervisory Devices In Force

& Sudden Pressure Relays

Present Status of PRC-005 Versions


• PRC-005-6, R1, the PSMP• Transitioning from PRC-005-1 to PRC-005-6• Battery Table 1-4f• PRC-005-6 R5 applicability

Clarifications


• The specifics of R1, PSMP, involves the term Component Type• Component Type Any one of the five specific elements of a protection system Any one of the four specific elements of automatic reclosing Any one of the two specific elements of sudden pressure relaying

• Component Any individual discrete piece of equipment included in a protection

system, automatic reclosing, or sudden pressure relaying

Clarifications PRC-005-6 R1 – the PSMP


• R1 - Establish a PSMP for its Protection Systems, Automatic Reclosing, and Sudden Pressure Relaying identified in Section 4.2, Facilities. The PSMP shall: 1.1. Identify which maintenance method (time-based, and/or

performance-based) is used to address each Protection System, Reclosing, and Sudden Pressure Relaying Component Type

1.2. Include the applicable monitored Component attributes applied to each Component Type where monitoring is used to extend the maintenance intervals beyond those specified for unmonitored Protection System, Automatic Reclosing, etc.

Simplified PRC-005-6 R1 Verbiage


Typical PRC-005-6 Table Identifying Mandatory Tasks and Intervals


Monitoring Attributes

Monitored microprocessor protective relay with the following: • Internal self-diagnosis and alarming (see Table 2) • Voltage and/or current waveform sampling three or more times

per power cycle, and conversion of samples to numeric values for measurement calculations by microprocessor electronics

• Alarming for power supply failure (see Table 2)


• Write a PSMP document• Include information required by parts 1.1 and 1.2• Include information analogous to that in the PRC-005-1 PS

maintenance and testing program• Include Performance-Based Maintenance Information (PBM), if

PBM is used• Recognize that to be compliant with time-based maintenance

requirements, you must meet PRC-005-6 table requirements, executing your program is insufficient for compliance

• If you use PBM, you have to execute your program, a la PRC-005-1 (see Requirement 4, PRC-005-6)

PRC-005-6, R1 Compliance Suggestions – Be on the Safe Side


• Became effective under PRC-005-2 effective 4/1/2015• These continue thru PRC-005-2(i), and PRC-005-6• R1 addresses the PSMP• R2 addresses Performance Based Procedures• R5 address Unresolved Maintenance Issues• R3 and R4 address actual maintenance performance. They are

governed by two complex implementation plans

Implementation, Requirements –One, Two, and Five


• There are now two implementation plans in force• The first covers tables one through three, PRC-005-2(i), (all sub-

tables)• The first table addresses PS, under-frequency, under-voltage,

and SPS.• The second covers tables four through five and addresses

reclosing and sudden pressure relaysMake sure you check out the precise language of all elements covered. As an example, the requirements for reclosing covers a very small number of schemes on most systems

Implementation Plans – Phase In Dates


1 Or, for generating plants with scheduled outage intervals exceeding two years, at the conclusion of the first succeeding maintenance outage.2 Or, for generating plants with scheduled outage intervals exceeding three years, at the conclusion of the first succeeding maintenance outage.

PRC-005-2/-2(i) R3 and R4 Implementation Timelines

Max. Maintenance Interval

% Compliant By

Less than 1 year(T 1-1 thru 1-5)

100% Oct. 1, 2015 (1D/1Q 18 mo. following regulatory approval of PRC-005-2)

1-2 calendar years(T 1-1 thru 1-5)

100% Apr. 1, 2017 (1D/1Q 36 mo. following regulatory approval of PRC-005-2)

3 calendar years(T 1-1 thru 1-5)

30% Apr. 1, 2016 (1D/1Q 24 mo. following regulatory approval of PRC-005-2)1





6 calendar years(T 1-1 thru 1-5 & T 3)

30% Apr. 1, 2017 (1D/1Q 36 mo. following regulatory approval of PRC-005-2)2





12 calendar years(T 1-1 thru 1-5, T 2, T 3)



60% Apr. 1, 2023 (1D/1Q 108 mo. following regulatory app. of PRC-005-2)


100% Apr. 1, 2027 (1D/1Q 156 mo. following regulatory app. of PRC-005-2)


PRC-005-6 R3 and R4 Implementation Timelines

Max. Maintenance Interval

% Compliant By

6 calendar years(T 4-1, 4-2(a), 4-2(b), 4-3, 5)

30% Jan. 1, 2019 (1D/1Q 36 mo. following regulatory approval of PRC-005-6)












• This issue has been reviewed with many Electric Reliability Organization (ERO) personnel across the country

• Is being reviewed at NERC• The strong consensus is that the registered entity must first

maintain the component under the requirements of PRC-005-2 (or later) before the entity can identify the component as being maintained under the “Post PRC-005-1.1b” standards, such as PRC-005-6

Implementation Plan – How Does an Entity Transition to New Standard?


• Don’t be mislead by the Implementation Plan• The dates are NOT dates you must start using the new PRC-005• These dates are the dates that certain percentages of your

population must have been last maintained under the new PRC-005

• Must start as soon as possible (or earlier) to ensure you make the minimum percentages by the target dates

• As an example, for relays which must be maintained every six years, 30% must have been last maintained under PRC-005-6 by April 1, 2017. Will 30% of your unmonitored relays be compliant then?

IMPORTANT – Start Implementing Later PRC-005 Versions Now


The Battery Table – Table 1-4f


Table 1-4f, Simplified

Table1-4f Exclusions for Protection System DC Supply

Maintenance Activities

Attributes Max MaintenanceInterval

Maintenance Activities

Station DC Supply with high and low voltage monitoring

No periodic verification of voltage is required

Any battery station DC supply with level monitoring and alarming

No periodic maintenance specified

No periodic inspection of electrolyte level is required

Any station Dc supply with DC ground monitoring

No inspection for grounds is required


Table 1-4f, Simplified

Table1-4f Maintenance Activities

Attributes Maintenance Activities

Station DC Supply with high and low voltage monitoring

No periodic verification of voltage is required

Any battery station DC supply with level monitoring and alarming

No periodic inspection of electrolyte level is required

Any station DC supply with DC ground monitoring

No inspection for grounds is required


• Requirement 5 in the PRC-005-2 and later standards obligates registered entities to: “Demonstrate efforts to correct identified unresolved maintenance

issues.”

• This requirement has no counterpart in PRC-005-1.1b, or the other legacy standards

• All registered entities are required to maintain components in accordance with either PRC-005-1.1b (and other legacy standards) or the PRC-005 (or later versions), not both

• Consequently, R5 applies only to those components being maintained under PRC-005-2 (or later versions)

PRC-005-6 R5 Applicability


• Ensure contractors follow the standard (if employed)• Create a spreadsheet and make sure all PS Components are

included (including those which affect the BES)• Identify all departments in your entity with PS maintenance

responsibilities (batteries, communication, relays, etc.). Then ensure they all understand the new rules and requirements

• Set up an implementation plan to ensure components are tested before mandatory transition date

Tips


• Identify and train maintenance personnel on any new tasks – to include record keeping on unresolved maintenance activities

• Set up record keeping system for R5 - unresolved maintenance activities

• Ensure that your record keeping system can support proving compliance with the new requirements. Specifically: Does your records system provide for documenting field performance of

the tasks NERC is now requiring? Do you have a method by which all groups performing maintenance can

produce field records reflecting performance of the required tasks.

• Obtain data (perhaps from the BA) needed to identify R/C that must be addressed in the program. Must test under the new rules before you can transition to the new standard

Tips


• Recognize that scope is dictated by “affects the reliability of the BES”

• Categorize the battery systems• Ensure battery maintenance personnel are aware of applicable

requirements – which table applies to which batteries on your system

• Focus on compliance with PRC-005-6. It’s all inclusive of the new PRC-005 series

• Retain the original field testing information for audit purposes and Protection System Maintenance Management

• Manage the transition to ensure compliant by target dates

Tips


• Entities thinking that a physical inspection by a station operator is proper testing

• Entity with newly commissioned equipment (or an entire brand new NERC Compliance Registry (NCR)) not having a maintenance program documented for the new equipment

• Some registered entities are classifying components as monitored without fully reviewing the monitoring characteristics in the PRC-005-2 tables. This causes the registered entities to extend the intervals beyond what they should be and miss the required testing and maintenance associated with unmonitored components

Examples of Violations


• Some registered entities are failing to require verification of correct relay settings as part of the maintenance/test requirements. This verification is specified in Table 1-1 for both unmonitored and monitored protective relays

• Some registered entities struggle to understand what it means to transition a component from one of the legacy standards to PRC-005-2. A component is considered transitioned to PRC-005-2 once it has been tested according to the maximum maintenance intervals and minimum maintenance activities listed in the PRC-005 Tables. A component has not been transitioned simply by designating in the registered entities’ records that a given component is going to be maintained under PRC-005-2 from that point forward

Examples of Violations


• Registered entities using component inventories (spreadsheets) to facilitate maintenance management and auditing

• Regions publishing guidance mandatory inventory spreadsheet formats to facilitate data gathering and review

• TRE Spreadsheets available at: PRC-005-6 Implementation Plan – Calendar View PRC-005-6 Implementation Plan – Requirements View

Good Practices

http://www.texasre.org/CPDL/PRC-005-6%20-%20Implementation%20Plan%20-%20Calendar.pdf

http://www.texasre.org/CPDL/PRC-005-6%20-%20Implementation%20Plan%20-%20Requirements.pdf


TRE Implementation Guide


TRE Implementation Plan


• Supplementary reference and FAQ, PRC-005-2 PS Maintenance, October 2012http://www.nerc.com/pa/Stand/Pages/PRC0052RI.aspx

(Note the above is 4.5 years old)• BES Definition Reference Document Version 2 April 2014

NERC WebsiteProgram Areas & Departments > Reliability Assessment and Performance Analysis > > Bulk Electric System (BES) Definition, Notification, and Exception Process > BES Definitions and Supporting Documents > Bulk Electric System Definition Reference Document Version 2.0 – April 2014

Relevant References

http://www.nerc.com/pa/Stand/Pages/PRC0052RI.aspx

http://www.nerc.com/PA/Pages/default.aspx

http://www.nerc.com/pa/RAPA/Pages/default.aspx


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