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INTRODUCTION:

Tetra Tech Inc. (TT), an international consulting and engineering firm, is the prime contractor for the USAID-funded ‘Sustainable Energy for Pakistan’ (SEP) project. USAID SEP jointly developed a work plan with NTDC for improving the transmission system network in Pakistan. In this regard, SEP plans to organize extensive hands-on training courses (both basic and advanced levels) for NTDC engineers to enhance their skills in power system studies and analysis. The training program aims at developing the capability of the participants to build practical expertise on Siemens’ Power System Simulation for Engineers (PSS/E) software, a state-of-the-art industry-standard software, recognized as the most widely used tool for power system analysis for performing load flow studies, short-circuit analyses and power system stability studies. The individual consultant selected for providing this training will work in close liaison with NTDC and USAID/SEP, and will be based in Lahore, Pakistan, during the course of training.

JOB DESCRIPTION

1)      Providing hands-on training courses to NTDC engineers, first at basic level and later at an advanced level, to develop the expertise of NTDC’s Power System Planning Department’s engineers to perform a wide range of power system analyses using PSS/E (version 33 or later). The estimated timeframe for the training is about two months.

2)      25-30 engineers are to be trained tentatively on PSS-E. The classes may have to be divided in batches and staggered in coordination with NTDC/SEP so that all of them can benefit from the full training while performing their routine official functions. The participants will include representatives from various distribution companies and the NPCC.

3)       The courses should be designed to inculcate in the trainees a deeper understanding of power system analysis and techniques to tackle and resolve system problems and challenges pertinent to Pakistan’s present and future power network.

4)      Starting from the preliminaries of PSS/E structure and a base case network model developed from scratch—including characteristics taken from the NTDC network to include all the essential elements of generation, transmission lines and substations covering 500 kV, 220 kV and 132 kV transmission levels including compensators—will be used based on data input from NTDC. However, at the advanced level, some cases representing the full network of NTDC with all types of generation should also be run.

5)      Training will be provided on working system of PSS/E on all the capabilities and utilities of the tool, that should include, but not be limited to, the following:

a)      Basic Course: This should cover load flow analysis, modeling of various electrical equipment including all types of generators, particularly variable renewable energy (VRE). Planning criteria, modelling of data of 500 kV, 220 kV and 132 kV systems of NTDC, reactive power and compensation needs, dispatch theory and contingency analysis, fault analysis and protection needs, short-circuit calculations in PSS/E, and fault current calculations. Stability studies, including static as well as dynamic, small-signal stability, various models of stability, characteristics of generators, inertia constant, excitation and subprograms of PSS/E, including angular stability, graphic interfaces and interpretation of results. Operational studies should also form part of the course, besides planning.

b)      Advanced Course: It should be an extensive course that covers a multitude of expert levels of system study simulations to cover the following requirements:

  • Analysis with different short circuit calculation options (ANSI, BKDY, IECS, SPCB, etc.)
  • Making generator curves (VCV) and their use and interpretation
  • Perform response tests of exciters and governors, and interpret results
  • Use and analyze turbine load controller model
  • Voltage stability analysis. Voltage flicker study (if possible in PSS/E)
  • Generation rejection studies
  • Reactor sizing studies
  • PV/QV curves and analysis
  • Steady-state and dynamic modeling, simulation and analysis with switched capacitors and FACTS devices (SVC, SVS, STATCOM, TCSC, SSSC, UPFC, TCPAR, etc.). Impact of technical parameters of above devices on system performance. Interpretation of study results and dynamic behavior of above devices.
  • Modelling of different types of power system stabilizers (PSS) and interpretation of study results. Impact of different parameters of PSS on dynamic behavior of plant and system.
  • Modelling, simulation and analysis of battery energy storage system (BESS).
  • Motor starting studies.
  • Comparing the motor load’s behavior in transient condition with/without SVC and SVS.
  • Perform Eigen value analysis (Prony) and interpret results.
  • Dynamic modeling, simulation and analysis of under-frequency relay, under/over voltage relays, line and load relays (distance and overcurrent relay, etc.) and other relay models available in PSS/E. Interpret study results.
  • HVDC modeling (steady-state and dynamic), simulation and analysis with PSS/E library models and user-specific models and interpreting the study results for two-terminal HVDC, multi terminal HVDC and voltage source converter (VSC) HVDC.
  • Study of impact of parameters of HVDC convertor on dynamic behavior.
  • Determination of dynamic reactive power compensation requirements for HVDC converter stations (static or dynamic).
  • Modelling, simulation and analysis of different solar power plants: photovoltaic 9PV) and concentrated solar power (CSP).
  • Modelling, simulation and analysis of different types of wind power plants and use of different vendor wind turbine generator (WTG) models available in PSS/E.
  • Determination of reactive power requirements with solar and wind power plants.
  • Power quality issues and required analysis of PV solar power plants and their solutions. Issues of interconnection with grid of WTG and PV solar.
  • Preparation and running of automation files (IDEV, Python, PSAS, PSEB, etc.)
  • Common and frequent methods of IPLAN used for system studies.
  • Performing PSS/E library and non-library models calling, linking and compiling using Connec, Connet, manual calling models.
  • Database management and conversion to PSS/E databases.
  • Perform LSYSAN and interpret results.
  • Perform extended term simulation.
    • The consultant should prepare realistic test examples for each of the above-mentioned simulations for training in PSS/E.

ASSESSMENT OF NTDC PLANNING AND PROTECTION TOOLS AND SOFTWARE

At the end of the training or alternatively, between the training courses, the individual consultant will be required to assess NTDC’s present state of planning and protection tools, and the need for additional tools, software, etc., required to further enhance their capability and build a modern in-house facility capable of dealing with needs and challenges in undertaking complex power system studies and analyses. The final report should therefore also provide an assessment of NTDC’s Planning and Protection Department, along with necessary recommendations for further capacity enhancements.

QUALIFICATIONS OF THE CONSULTANT

1)      A reputable and well-qualified internationally-accredited Consultant, with a valid license or registration as professional engineer.

2)      The individual Consultant must have at least ten (10) years of relevant experience of working or imparting training on modern PSS/E tools. References to specific experience on recent assignments of a similar nature and scope should be provided with the application.

3)      The individual Consultant must have undertaken, at a minimum, five assignments of similar trainings on PSS/E. A reference list of the trainings on PSS/E already completed by the Consultant with the names of the clients, description of the training scope and years of completion must be included with the application.

4)      The individual Consultant must also have hands-on experience working on advanced industry-standard tools and techniques for power system planning and analysis. Relevant experience in power system studies, including load flow, FACTS devices, PSS, short-circuits and system stability studies for large power systems is also desired and references in this regard should be provided.

5)      The Consultant must be well-qualified and experienced in conducting professional technical training for both transmission and distribution entities. The application must include complete resumés of the individual to be deployed for the assignment. The Consultant must have Bachelors or higher degree in Electrical Engineering. The consultant will be responsible for the overall delivery of the training program under supervision of SEP staff.

6)      The Consultant must provide a schedule and a detailed approach and methodology for the proposed training tasks with the application. The estimated timeframe for the training is about two months. SEP anticipates starting the training by July 2018.

7)      The individual Consultant must not have been blacklisted by any government or agency.

8)      The Individual Consultant must not be currently involved in any litigation or arbitration.

DELIVERABLES:

The individual consultant shall provide details of both basic and advanced level training to SEP including a detailed schedule, curriculum, manuals and other training materials. Specific deliverables under this assignment will include, but not be limited to:

1)      Inception Report that outlines a schedule for completing all activities.

2)      Weekly Progress Reports, along with weekly meetings with SEP team in Lahore/Islamabad (in person or via Skype, video conferencing, etc.) to discuss progress and activities outlined in the SOW.

3)      Draft report on both basic and advanced training, along with assessment of NTDC planning tools/software.

4)      Final Report combining both basic and advanced training and an assessment of NTDC planning tools/software. The consultant is expected to conduct an evaluation of the participants upon completion of training and include its results in the report. The Final Report shall be submitted in one consolidated volume that should include an executive summary and the main report.

TRAINING VENUE

The training shall be conducted at the premises of NTDC’s Planning Department in PIA Tower, 4th floor, Lahore, Pakistan.