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PSTI provides quality, efficient, and reliable service in the substation/plant
engineering for power utility, oil and gas, and renewable and distributed generation.
Via strategic collaboration and competent sub‐contracting, PSTI can provide turn‐key
type of service including engineering, procurement, commissioning, and construction.
• Conduct relay and equipment (CB, MOD, CT and PT etc.) replacement in
existing substations / plants. Handle well with unanticipated situations
encountered over executing such brown field projects
• Provide conceptual engineering service on options, option comparison with
cost justification; Single line diagram; Identify project risks and challenges
• Develop substation drawings, calculations, layouts and elevation drawings,
single line diagrams and three phase diagrams, site plan
• Power system studies: load flow, short circuit, motor start and arc flash
• Conduct design study on AC/DC load, cable selection and voltage dropping, CT
sizing, burden and saturation, grounding grid;
• Prepare the detailed design package including AC control single line, DC logic
diagrams, DC & AC Station Service distribution, AC & DC Schematic, wiring
diagrams and cable tables, panel layout & cutout diagrams, control building
layout, bill of material (BoM) etc.
• Draft / review / finalize equipment specification and datasheet for power
transformers, generators, motors, MCC, VFD, switchgear (AIS or GIS), UPS and
DC power
• Provide Construction Plan from designers’ perspective for guiding the
construction and installation; Create Commissioning and Testing Plan;
Support field construction and commissioning
• Convert network based SCADA to cloud based by replacing in‐house
networking resource with major cloud web service providers (such as
Amazon, Google or Microsoft “Clouds”)
• Add mobile device application to the existing SCADA for historian and realtime
data polling / presentation, analytics, alarm processing, based on cloud
computation
• Install new SCADA using cloud based technology and products to reduce the
initial capital cost and ongoing maintenance cost
• Integrate multiple SCADA system from different vendors or different vintages
into one consistent format
• Support on troubleshooting of substation equipment failure and protection
mis‐operation; provide engineering service for short‐term mitigation and
replacement
• Substation major equipment general specification and detailed specification
study, model selection, standardization, and procurement support
• Root cause analysis on substation equipment and protection failure; trending
data analysis and long term solution proposal
• Equipotential bonding & grounding (EB&G) standard creation and maintaining
• Arc flash hazard analysis and study on MV and LV metalclad switchgear or
other equipment of concern
• Create operation and design standards / templates / procedures related with
substation engineering
• Design detailed relay settings for protecting power transmission lines,
distribution feeders, power transformers, phase shifting transformers, shunt
reactors, capacitor banks, busses, breakers (failure and control), reclosers
• Provide overall P&C protection scheme consultation with expert’s insight in
formal reports; estimate of P&C implementation cost; scheme selection based
on analysis of protection reliability (dependability and security), redundancy,
speed and selectivity; coordination study, check and documentation
• P&C standard development at philosophy level, and at relay / device level (e.g.
selecting, screening and applying a new relay, converting the new application
into a template or standard)
• Compliance preparation and strategy consulting on reliability & coordination
standards
• Short circuit modeling of new power system elements; fault level calculation;
fault clearing time analysis and “budgeting”; detailed DC Logic Diagram
illustrating the logics between inputs and outputs of relays
• Formal reports (in format of MathCad) documenting engineering calculation,
considerations, formula, algorithms, assumptions, justifications
• Preparation and issuance of vendor proprietary settings files directly
downloadable to relays; real‐time support to field construction,
commissioning & testing; evaluate testing results to ensure validity of settings
• As_Built engineering: Engineering justification for field modifications; prepare
and submit As_Recorded (aka As_Built) setting files and reports for
permanent project documentation purpose; As_Built “hardware” design
modifications as well (if required)
• Economics and market analysis through the lifecycle of a generation project,
from the pre‐viability stage to the operation stage
• DG or IPP interconnection (including study to meet the grid codes,
negotiation for economics, and implement the interconnection) with DFO,
TFO and the ISO in the jurisdiction
• Make technical negotiation and reach coordination agreement with the
interconnecting utilities and governing regulators
• Estimate overall cost of interconnecting renewable energy distributed energy
resources (DER) to the power system
• Conduct detailed engineering design for the collector bus and substation
interfacing with the utility
• Implement transfer trip scheme and anti‐islanding with modern solution
• Provide innovative technical solutions to save cost on the project
• Model and study pipeline induction due to adjacent power lines; design
mitigation plan to protect pipelines
• Design, review, study for mitigation grounding grids in substations / plants.
Create, execute or supervise execution of grounding plan to mitigate unsafe
operational situation related with high grounding resistance and subsequent
high GPR and TPR
• Conduct field work to do on‐site measurement, data retrieval for modelling;
execute or supervise execution of the mitigation plan; verify the effectiveness
of mitigation plan
• For project designs, provide drafting support to variety of stages
• For Asset Management, draft, check and approve all field returned
AsRecorded drawings
• Project engineering and project management services from the inception of a
project to the successful energization. PSTI has been involved with some of
the most complicated, or largest projects in Alberta
• Project scheduling, outage request, construction management
• Go through filing and subsequent follow up with AUC, AESO, TFOs and DFOs
on connection to the AIES (Alberta Integrated Electric System)
• Provide power system interconnection study based on the client’s load or
generation need and requirements, as well as the governing system
operator’s reliability standards in the jurisdiction
• Identify and resolve power system constraints by considering innovative and
environmentally friendly solutions
• Study, propose and design RAS (remedial action scheme) to mitigate power
system constrains in lieu of expensive system upgrade
• Historical and real‐time (ongoing) generation facility (per generation unit
or per aggregated generation site) with up to minute by minute resolution
• Economic analysis report for viability studies and decision‐making on
investments into the Albertan power generation market.
• visit our interactive Alberta Generation Tracing (AGT) dashboard to observe generation and price data over the past 8 days here.
• MV & LV distribution and HV transmission line standards –structure design
(per codes, standards and the client’s past convention), bill of material,
standard maintenance and update
• Foundation and structure design for line towers or poles using PLS‐CADD,
PLS‐POLE, TOWER, Staad Pro, S‐Frame/S‐Steel, L‐Pile, AutoCAD or
MicroStation.
• Substation civil engineering and land development plan and design. Civil
design and review on telecom towers and pre‐fabricated control buildings.
Download our full Scope of Services here