Senior Manager EHV Design

Job description:

The principal responsibilities essentially include:

Design and Engineering:

1. System Design & Configuration:

System Studies: Conduct detailed system studies, including load flow, short

circuit analysis, voltage drop calculations, reactive power compensation, and

harmonic analysis to ensure the stability and reliability of the power system.

Configuration Layout: Design the overall configuration of the EHV substation,

including the arrangement of transformers, busbars, circuit breakers, isolators,

and other critical high-voltage components.

Redundancy & Reliability: Incorporate redundancy, protection, and fail-safe

mechanisms in the design to enhance system reliability and minimize the risk of

outages.

1. Detailed Electrical Design:

Single Line Diagrams (SLDs): Develop comprehensive single line diagrams that

clearly define the electrical connections and arrangements of all major equipment

in the substation.

Equipment Specification: Define the specifications for all major electrical

equipment, including transformers, switchgear, reactors, and capacitors, ensuring

compliance with project requirements and standards.

Cable Sizing & Routing: Calculate and select appropriate cable sizes based on

current-carrying capacity, voltage drop, and thermal constraints. Design efficient

cable routing plans that minimize interference and optimize installation.

Earthing & Bonding: Design an effective earthing and bonding system for the

substation, ensuring personnel safety, equipment protection, and compliance with

local regulations.

1. Primary Engineering:

High-Voltage Equipment Design: Design the layout and connections for high

voltage equipment such as power transformers, circuit breakers, disconnect

switches, current and voltage transformers, and surge arresters.

Busbar Design: Design busbar systems with considerations for thermal

performance, electrical stress, and mechanical stability. Ensure appropriate

spacing, support, and insulation to prevent flashovers or mechanical failure.

Interconnection Schemes: Develop interconnection schemes for integrating

multiple substations or tie-lines into the existing power grid. Design interfaces with

existing infrastructure while ensuring minimal disruption.

1. Secondary Engineering:

Protection Systems: Design comprehensive protection schemes, including

differential, distance, overcurrent, and earth fault protection, ensuring fast and

reliable fault detection and isolation.

Control Systems: Design control logic and schemes for automation, including the

operation of circuit breakers, isolators, and other switchgear. Ensure seamless

integration with remote operation systems and SCADA.

Metering & Instrumentation: Specify and design the metering and

instrumentation systems required for accurate monitoring and billing. Include

current and voltage transformers, energy meters, and transducers.

1. Equipment Sizing & Selection:

Transformer Sizing: Calculate and select appropriate transformer ratings,

considering factors such as load growth, fault levels, efficiency, and cooling

requirements.

Switchgear Sizing: Determine the correct ratings for circuit breakers, switchgear,

and other protective devices, ensuring they can safely interrupt fault currents

without compromising system integrity.

Capacitor Bank & Reactor Design: Design and size capacitor banks for reactive

power compensation and reactors for controlling over-voltages or for current

limiting in the substation.

1. Integration with Renewable Energy Systems:

Grid-Tie Design: Design interfaces for the connection of utility-scale renewable

energy systems (e.g., solar, wind) to the transmission grid, considering voltage

levels, harmonics, and stability.

Inverter & Converter Coordination: Ensure proper coordination between EHV

equipment and inverters or converters used in renewable energy systems.

Address issues such as power factor correction, harmonics filtering, and

synchronization.

7. Owners Engineering:

Technical Advisor: Act as the technical advisor to the project owner, providing

expert guidance on all aspects of EHV substation and transmission line design,

construction, and commissioning.

Design Validation: Review and approve design documents, drawings, and

calculations provided by contractors or third-party consultants to ensure

compliance with project specifications, industry standards, and best practices.

8. Equipment Design Review:

Technical Evaluation: Conduct a thorough technical evaluation of vendor

proposals, including equipment specifications, performance data, and compliance

with project requirements. Ensure that the selected vendors have a proven track

record of delivering high-quality EHV equipment.

Specification Compliance: Review and validate equipment designs provided by

vendors/OEMs to ensure they comply with the project's technical specifications,

industry standards, and regulatory requirements.

Design Validation: Perform detailed design validations, including reviewing

engineering drawings, schematics, and technical data sheets. Ensure that the

equipment is appropriately designed for the specific operating conditions and load

requirements of the project.

Material and Component Verification: Verify the materials and components

specified by the vendor, ensuring they meet the required durability, reliability, and

performance standards. Assess the suitability of materials for the specific

environmental and operational conditions of the project site.

1. Compliance and Standards Adherence:

Industry Standards: Ensure that all designs comply with international and

national standards such as IS, IEC, NEC, IEEE, ANSI, and regional grid codes.

1. Innovative Design Solutions:

Advanced Technologies: Stay abreast of emerging technologies in EHV

systems, such as digital substations, gas-insulated switchgear (GIS), and

advanced protection relays, and incorporate them into designs where applicable.

Cost Optimization: Develop designs that balance cost-efficiency with

performance, exploring options such as modular construction, prefabricated

substations, and standardized components.

1. Quality Assurance:

Design Reviews: Conduct rigorous design reviews and cross-discipline checks

to identify and rectify any potential issues early in the design process.

Documentation: Prepare and maintain comprehensive design documentation,

including technical reports, design calculations, and as-built drawings.

1. Coordination with Civil and Structural Design:

Foundation Design: Collaborate with civil engineers to design appropriate

foundations for high-voltage equipment, considering factors such as weight,

vibrations, and seismic conditions.

Structural Integration: Ensure that the structural design supports the electrical

design, providing adequate clearances, accessibility, and safety measures.

Selection process:

• Telephonic discussion: Preliminary round of discussion over a call by the

company HR.

• Technical round: Technical round of discussion with the domain specialist in

Pune/ Vadodara office, MS Teams may be preferred for outstation candidates.