Project features

In July 2019, Masdar has signed a PPA with NEGU to design, finance, build and operate a 500 MW wind farm project, which will be located in the Zarafshan district of the Navoi Region (the Project). Commercial operation is expected to be achieved in 2024. Once built, the Project will provide enough electricity to power 500,000 homes, displace 1.1mln tonnes of CO2/year, and set to be the largest of its kind in Central Asia and the first to be constructed in Uzbekistan. The Client has been selected as EPC Contractor for Project. EPC scope includes construction of 500 MW wind farm, grid interconnection infrastructure including 220 kV digital substation and 2x220kV OHTL, access roads and control buildings. Juru’s scope in this assignment included:

• 500 MW wind farm: Comprehensive Engineering Review and permitting support
• 220 kV Digital Substation with two electrically isolated AIS: Basic and Detailed Design development (protection & control architecture based on IEC 61850)
• 2 x 220 kV overhead transmission line design engineering (ca.0.6 km)
• Static and Dynamic Stability Studies and Emergency Control Automation (ECA) design

Services provided

500 MW Wind Farm: Comprehensive Engineering Review and Permitting Support

• Detailed review of the basic and detailed design documentation prepared by the Client for compliance with local standards and codes;
• Support DD review and facilitate the approval process by the Ministry of Construction (MoC);
• Support the Client in the content and interface management for the design documentation development;
• Comprehensive engineering design review of:
  • General layout, civil & architectural of Wind Farm;
  • Primary and secondary electrical networks, auxiliary power supply;
  • Relay protection and automation, SCADA, SAS and telecommunication;
  • Water supply and sewage, HVAC, etc.
• Conduct fire hazardous area categorization study and preparation of project plot plan;
• Perform relay setting calculation & protection coordination study for Wind Farm;
• Comprehensive Prepare presentation materials (including general layout) and obtain Architectural Planning Assignment from local authorities;

220 kV Digital Substation with two electrically isolated AIS - Basic and Detailed Design development:

• Basic engineering design, BoQ and costing:
  • Develop design criteria for each discipline;
  • Perform Insulation Coordination Study;
  • Develop main and DC & UPS SLD, layout and cross-section of AIS equipment;
  • Create protection & control architecture based on following specifications;
  • Application of MMS protocol IEC 61850;
  • Application of GOOSE protocol IEC 61850;
  • Application of Sampled Values IEC 61850;
  • Application of IEC 61850 at Station level, Bay level and Field level devices;
  • Application of Analog and Binary signal converter (stand-alone merging unit);
  • Develop comprehensive IEC 61850-solution based project documentation;
  • Create SSD files formalizing the requirements for the functions (logical nodes) configured on IEDs in accordance with IEC 61850 using HELINKS STS, validate SSD files on SSD Validator;
  • Develop telecommunication structural diagram, Automatic Metering Infrastructure, network topology;
  • Perform short circuit, load flow, HV/LV equipment, DC&UPS and ACSR & cable sizing calculations;
  • Prepare technical specifications & datasheets for HV/LV equipment, DC&UPS relay protection, SCADA, telecommunication, AMI, CCTV devices and etc.;
  • Develop control building layout, HVAC, civil & architectural conceptual design.
• Procurement support:
  • Tender technical evaluation including a comparative summary of the requirements requested and offered to facilitate the decision-making process for award from a technical point of view;
  • Comments and/or clarifications to the technical specification;
• Support during the technical negotiations with the selected bidder.
• Detailed Design and final BoQ including: 
  • Substation primary electrical engineering, equipment installation detailed drawings;
  • General layout, civil & architectural engineering, water supply and sewage, HVAC;
  • Develop SCD (is based on ICD, IID, CID, IID, SED, or partial SSD) files using HELINKS STS based on specific selected vendors system configurator, validation of SSD and SCD files, develop GOOSE, MMS data set for each IED;
  • Signal list for relay protection units (GOOSE communication protocol for arranging AIS software interlocking logic and signal exchange between ECA equipment and relay protection units, MMS communication protocol for arranging SCADA system of 220 kV substation);
  • Communication structure of dispatch telephone communication and interconnection with neighbouring substations (topology) through HF (PLCC) communication and OPWG communication based on IP/IMPLS;
  • CCTV equipment and network;
  • Develop Start-up and Normal Scheme for commissioning, Perform Relay Settings & Protection Coordination Study;
  • Preparation of As-Built drawings.

2 x 220 kV Overhead Transmission Line Engineering

• Calculate mechanical and sag tension of power transmission line, towers and foundations selection using Lira SAPR LEP Software;
• Prepare detailed drawings, clearance verification, BoQ and specification;

Static and Dynamic Stability Study and Emergency Control Automation (ECA) Design

• Prepare and facilitate approval of the ToR for static and dynamic stability study for selection of ECA equipment;
• Modelling of Wind Farm based on WTG by Goldwind on Digsilent PowerFactory;
• Conduct static and dynamic stability analysis for selection of ECA equipment, and development study report, obtaining approval of NEGU;
• ECA equipment detailed design:
  • Prepare purchase orders for ECA equipment including ALAR, ARPT, AKA KEDR 2.0;
  • Develop schematic drawings and wiring schemes for ECA equipment: ALAR, ANM, ARPT;
  • Design of AKA KEDR 2.0 supporting IEC 61850;
  • Calculate and adjust ECA settings of existing ECA settings at associated (remote-end) facilities, develop COMTRADE file.