Engineer Power Plant

Protective Relay Engineering, Inc.

John Horak

*********@*-*-***.*** 303-***-****

**** *. ********, **** *

P.R.

Centennial CO 80121 Eng.

Protective Relay Engineering is the company that I (John) utilize for performing consultant and independent contract

engineering work in the design, analysis, and protection of electric power systems and equipment. I am familiar with the

electrical design practices found in utility transmission and distribution systems; large industrial end user systems at medium

and low voltage, with and without generation; smaller standby electrical generation systems; and bulk power generation

facilities. I have over 20 years experience in the industry. I am presently the sole employee of P.R.E., but via subcontracting

some tasks to others, I could possibly take on tasks requiring more personnel. I am open to working as a subcontractor to

other engineering firms.

Technical Skills Summary

Experienced in:

Phase and ground overcurrent relaying practices in utility and industrial systems, using classic overcurrent relays,

reclosers, fuses, and low voltage static trip and thermal magnetic circuit breakers.

Transmission line protection using stepped distance impedance concepts, communication aided POTT/DCB/DCUB

etc. schemes, line differential, and backup ground overcurrent schemes.

Generator protection schemes, ranging from large base load units, to smaller peak shaving and Cogen units, to

isolated emergency/standby units.

Protection used at the interconnection between an IPP and the Utility.

Protection of transformers, buses, motors, generators, and capacitor banks.

The development of AC one-lines and three-lines.

The development of DC control schematics and associated wiring designs.

Arc flash analysis, appropriate system modeling using SKM PowerTools, and mitigation approaches.

Configuration and setting of microprocessor based programmable logic relays from SEL, GE Multilin (UR and 7XX

series), Siemens 7xx series, ABB DPU/TPU, and Basler Electric.

Symmetrical component analysis (have taught in classes on this topic).

Software Capabilities

Good knowledge of SKM PowerTools and ASPEN OneLiner.

Moderate-good knowledge of CAPE, and light exposure to Neplan, ETAP, and EasyPower.

P.R.E. owns SKM PowerTools (2000 bus option), with several optional modules (Arc Flash, Unbalanced Fault, Motor

Start). Have used SKM PowerTools to analyze and model facilities with over 1200 buses.

Have limited access to ASPEN and CAPE via client s copies. (Client copies cannot be used for billable work.)

For general purpose calculations, I use MathCAD and MS Excel (I have prepared several complex spreadsheets

found on the Basler Electric website).

Moderate to light experience in AutoCAD, and light experience with MS Visio.

Have used MS PowerPoint extensively, as well as MS Word.

Education and Licenses

BSEE (Univ. of Houston) with electric power option classes.

MSEE (Univ. of Colorado) with concentration on power system analysis.

Have PE license in Colorado (License # 29838), California (License # E18133), and Texas (License # 99616; P.R.

Eng. Tx State registration # is 773109). NCEES record is established.

Have professional liability / errors and omissions insurance ($1M), and business owners insurance. Higher coverage

obtainable from current carrier if required.

Work History Highlights

Projects via Protective Relay Engineering

This work was part time 2003-2006, and full time since 05/2006. Customers include:

- Xcel Energy; relay settings and control design on various HV transmission projects. Most relay work for Xcel is with

SEL products. Major projects since 05/2006-Present include:

Spindle NUG Substation Relay settings for 230kV sub feeding 2 new generators (early 2007)

Plains End NUG Substation Relay settings for 3 new T-lines, GSU T-line, and GSU (early 2008)

Comanche 345kV Generation Substation Relay settings for 2 feeds to 750MW generating plant, 2 T-lines, 2

large autoxfmrs, plus bus/ breaker failure/reclosing/sync relaying. (Late 2007-late 2008)

Hobbs/Higgs Project Approximately 1/3 of the settings for new substation with 2 CTs, 1 ST, three 230kV and

seven 115kV lines, and a large autoxfmr. (Late 2007-late 2008)

Cox Substation Settings for new relays for 4 transmission lines, 1 auto xfmr, 2 cap banks.

Hartsel Sub Ground Overcurrent settings used as a training session for another engineer. (Mid 2008)

Hayden 230kV power plant line protection replacement (late 2006)

Valmont 230/115kV Auto #2 Control design and relay settings for new parallel xfmr, 3 new breakers, redraft

of non-standard drawing layouts, replacing substation DC equipment. (Mid 2008 to present)

- Central Contra Costa Sanitary District; 480V and 13kV systems analysis. Work included:

Reviewed causes of repeated loss of generation for utility transmission system faults. Provide a revision of

12kV relay line and generator settings to alleviate the problems. (Mid 2006-late 2006)

Extensive modeling of their system (SKM PowerTools) (1200 buses in model) involving walk down of plant.

(mid 2007-early 2008)

Short circuit and overcurrent breaker settings for 12.47kV overcurrent, and 480V and major 208V breakers.

Approximately 100 TCCs were generated. (mid 2007-mid 2008)

Arc flash analysis, and adjustment of relay and breaker settings to implement reduced arc flash levels. (mid

2007-mid 2008)

- WestPower Energy; assist in electrical design and relay settings in several IPP, utility, and industrial projects,

performing short circuit, arc flash, and relay/breaker coordination studies. Projects include:

PEPCO: Relay settings and control design assistance for the interconnection of a standby/Cogen generation

plant to the utility grid.

Settings and arc flash for various projects, such as Temple Inland, San Francisco Airport Generation, Tri-Hydro

project, Wellhead-Mirimar, Wellhead-Margarita, Moreno Valley. (Each were small projects billed at less than

100hours, over the mid 2006- mid 2008 period.)

Yale University 12kV Coordination Study; Determine cause of generation loss during remote utility faults;

analyze feeder coordination and review issues with ground fault coordination. (late 2006-early 2007)

Emery Station, CA; building coordination and equipment sizing analysis. (Late 2006)

- Other small relay setting projects/customers include:

Brookings Utilities, Creative Labs, RAI-Bremerton, Nooksack Hydro, Empire Caterpillar, Nova Group, American

Energy Assets, Rolls Royce Generation

- Basler Electric, giving continued support in schools and literature development.

Past Employment

- Basler Electric; Applications Engineer; 9 years. 1997-2006

Advised customers on use of product, provided technical review of customer installations, taught at Basler schools;

advised on product development, assisted sales reps on customer development.

- Stone & Webster Engineering / Public Service of CO (now Xcel Energy) 8 years. 1989-1997. Stone and

Webster was primary employer, but they subcontracted 60% of my time to PSCO/Xcel.

While at PSCO, duties included distribution and transmission line relay settings, set-up and maintenance of

ASPEN software, and equipment troubleshooting.

While at S&W, performed fault analysis and circuit breaker/relay settings for power plants, industrial facility

upgrades, and substation design work.

- Chevron, QA inspector, electrical products; Houston Light and Power; Coop student 1985-87

Technical Papers

I have written and presented many technical conference papers, and Basler Electric internal documents, on topics related to

electric power system design, analysis, and operation, with emphasis on protection practices.

Conference Papers

- Bus Protection Theory and Practice

- Directional Relaying (67) Concepts

- A Derivation of Symmetrical Components

- A Review of Ferroresonance

- Power Quality Measurements

- Load Shedding Concepts

- Three Phase Transformer Windings and Differential Relay Compensation

- The NEC and Low Voltage System Protection Concepts for the High Voltage Utility Engineer.

- Zero Sequence Impedance of Overhead Transmission Lines

- Commissioning Numeric Relays, Pitfalls and Benefits

- In progress: Generator Decrement Curves Beyond 3 Phase Terminal Faults.

Basler Electric technical classes, internal documents, or customer presentations:

- Generator Protection Guidelines (technical brochure, technical class)

- Transformer Protection Guidelines (technical brochure, technical class)

- Impedance relay theory of operation and settings (part of instruction manual)

- IPP interconnect protection concepts (technical class)

- Ground fault sensing concepts (internal documents, technical class, customer presentations)

- Loss of excitation using Mho vs. VAR approaches (internal document)

- Misc. reviews of Basler product designs vs. market opportunities.

Metropolitan State College, Denver: Teach class on a) Power System Analysis, and b) Electric Machines.

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