Proof, across power systems.

In collaboration with Civil Engineering Consultants, PSD carried out feasibility studies for a new hydro power plant and expansion to an existing hydro power plant.

Hogaliden Wind Farm Engineering and Compliance studies to verify the design parameters of the new 100MW wind farm and to also determine its compliance to the numerous regulations in the Västerbotten province of Sweden. PSD was responsible for the following main tasks: Transient Overvoltage Study Fault Studies Reactive Power Control Study Voltage Performance Study Harmonic Performance Study

PSD performed the complete suite of steady state and dynamic studies to assess whether 60MW Solar Power Plant is compliant to the Malawi Grid Code and Renewable Grid Code requirements. PSD consulted the Client regarding the sizing of static var generators in order to comply with the reactive power capability of the plant.

Al Ain and Abu Dhabi shunt compensation (132kV and 220kV): assist with setting up power quality measurement equipment at transmission grid stations. Carry out EMT and integration studies for HV Capacitor banks. Compiling the technical specifications (including drawings and datasheets) for C-Type Filter Banks

Carry out power quality measurements and analysis at three 132kV Grid Stations in the Northern Emirates. Shunt capacitor bank studies, including ferro-resonance, reactive compensation and fast transformer switching (TRAC). Responsible for compiling the technical specification (including drawings and datasheets) for 3 x 60MVAr C-Type Filter Banks.

Consulting Services during the tender, design and construction phases of the Tondong STATCOM) project – 2 x +/-120MVAr MMC Technology STATCOM s. Scope of services includes tender clarifications and evaluation, STATCOM design review – primary plant component design, control and protection system, valve and cooling design, layout etc – and witness of factory tests, site supervision and commissioning.

PSD provided specialist engineering consultancy services relating to the 3x±100MVAr STATCOMs for the biggest wind farm in Africa with 365 turbines. This included design reviews, RTDS testing and site commissioning. PSD performed the Commercial operation testing of the 300MW Lake Turkana Windfarm Project (LTWP) and its interface to the overall Kenyan grid.

As part of their power quality monitoring program CONNECT appointed PSD to measure the power quality of the electricity supply on St. Helena island. This included the installation of 11 power quality measurement instruments and analysis of the results. Concerns had to be identified and solutions recommended.

Maun Substation Reactive Power Compensation: PSD was responsible for Power System studies to determine the level of reactive power compensation required at Maun 132/11 kV Substation. PSD also undertook Harmonic Measurements, verification of loading parameters of the PSS/e software model and designed an optimized network reactive power compensation solution. Further services provided included preparation of tender documents for the design, supply, installation, testing and commissioning of the reactive power compensation equipment, witnessing of factory and site acceptance tests and engineering support during the warranty period

Abu Dhabi Lot 1 reactive compensation strategy: SVC/STATCOM detailed studies, compilation of +200MVAr (Inductive) -400MVAr (Capacitive) SVC/STATCOM specification. Compile prequalification report as part of the procurement plan. Provide the client with harmonic measurement guidelines in terms of IEC 61000.

Engineering Consultancy Services Static Var Compensators (SVC’s) Consultancy Service for Reactive Power Compensation Strategy: PSD is responsible for the SVC/STATCOM specification, and SVC Control modifications. Review of International Criteria, Study Methodology and Assumptions, Steady State Assessment, Load Modelling, Dynamic Reactive Power Assessment.

PSD performed the technical feasibility studies relating to the interconnection of EHV transmission grids of Zambia, Tanzania and Kenya. The studies included small signal stability studies, transient fault analysis, load flow studies and dynamic stability studies for the interconnection of the Southern African Power Pool (SAPP) and the East African Power Pool (EAPP). PSD also offered best practice solutions to load flow and stability constraints that were encountered during the study.

Engineering consulting services for ongoing support to client for definition, specification and implementation of projects to improve the reliability and technical performance of existing HVDC station in the short to medium term. Phase 1 included replacement of 3 x single phase converter transformers, DC smoothing reactors, DC surge arresters and DC optical CT’s. Phase 2 includes the refurbishment of converter transformers, replacement of a back-up diesel generator, purchase of a spare converter transformer, replacement of 220kV ac surge arresters and replacement of critical components on the valves and valve base electronics. Preparation of technical specifications for a major upgrade to Songo converter station to improve reliability and technical performance in the long term. The scope of the project includes replacement of HVDC control and protections systems, converter valves, valve cooling, ac filters, dc filters, ac and dc equipment, ac and dc auxiliary systems and the installation of a 220kV transfer busbar. It also includes the replacement of the Grid Master Power Controller with a Grid Power and Frequency Controller.

Power System Studies and Equipment Specification for Maun Substation Reactive Power Compensation Project

Detailed Design reviews and project execution support for SVC’s, STATCOM’s and Hybrids, including tender preparation, bid adjudication for Saudi Electric Company

Third Party Inspection of electrical equipment for the 90 MW Solar Plant in De Aar, Northern Cape

Development of PSCAD Model suitable for EMT Simulations for the 5 MW Swartland Photovoltaic Solar Plant.

SVC Specification and SVC Control System Modification for Reactive Power Compensation Strategy

SVC Design Review during the design and construction phase of the SVC project.

Statcom Design Review for Lake Turkana Wind Power Plant

Consultancy services for the addition of 20 MVAr Capacitive Reactive Power at Khan Substation.

System studies, harmonic measurements and equipment specification for 250 MVAr, 220 kV SVC / Statcom at Chimuara and Namialo Substations.

System Studies and stability analysis for Lesotho Electricity Company for the Feasibility Study for the 132 kV transmission line Mohale’s hoek to Mphaki.

System Studies, harmonic measurements, harmonic apporioning and Technical Specification writing for the 350 MVAr, 400 kV SVC / Statcom at Aries 400 kV Substation.

EMT studies (with PSCAD) for the 400kV system comprising of +/- 1400km AC transmission line, multiple substations, SVC’s, series capacitors and line and busbar reactors. Technical Specification writing for multiple SVC’s.

Grid impact studies for the 400kV connection of a 138MW wind farm facility to be located close to the town of Caledon in the Southern Cape, South Africa.

Assist Landsnet on the tender review, technical adjudication and design review of the Klafastadir SVC.

Grid integration and Grid Code compliance studies to connect 125 MW CSP plants to the Eskom grid.

Preparation of cost estimates for the connection of a 20MW PV plant, to be located near the town of Lephalale in South Africa, to the Eskom grid.

System studies to determine reactive power compensation requirements for the Uganda Transmission grid up to the year 2018. The assignment included the development of technical specifications for the proposed reactive compensation projects.

Steady state Analysis of the North to South power transfer capability of the ZESA transmission grid.

NER study for Ferrum Mookodi transmission system and for the Medupe transmission system.

Study to determine optimal shunt capacitor size and location for 132kV voltage support to accommodate motor starting for the SWCC Shaqaiq-2 Water Pumping Scheme. The study included the optimal configuration for harmonic integration.

Perform insulation co-ordination, inrush current and short circuit current study for 380kV, 220kV and 34.5kV equipment at the 1.35GW Raz Al-Khair aluminium smelter in Saudi Arabia.

Engineering, Design, Implementation and Commissioning of an expansion to an existing 275/33 kV, (2X) 180MVA Substation for a ferrochrome smelter project near Steelpoort, South Africa. The services provided included Power System Studies and Analysis, Substation Engineering and Design, Testing and Commissioning Supervision.

Detailed system studies and specification up and including contract award for 15 SVC’s including shunt capacitor banks, including tender preparation, bid adjudication – phased over several years. The project included Harmonic measurements at each of the sites.

Engineering Consultancy Services for 2 Static Var Compensators (SVC’s) at NHDA & Carx 400 kV Buses and Associated Modification Works. PSD is a sub consultant together with Kema to Energo. PSD is responsible for harmonic measurements, the SVC specification and technical tender evaluation, and during the contract execution phase responsible for design reviews, technical review of the SVC design, factory witnessing of key components, such as the thyristor valves, control and protection including RTDS testing, and finally site services during final commissioning and performance verification.

Training on PSCAD simulation and modeling software.

Review of the Expenditure Forecasts of the National Grid Corporation of the Philippines for the Third Regulatory Period (2011 – 2015) Under Performance Based Regulation.

Detailed system studies and specification up and including contract award for two Fixed Series Compensation banks, including tender preparation, bid adjudication.

SVC model development and verification in PSCAD for Quanta Technology.

A Technical Study of the Voltage Stability of the Tenke Fungurume Mining/D.R.C. Southern Katanga 220 kV 50 Hz System (Statcom project), Inclusive of harmonic measurements.

Capacitor bank studies for the Zambian utility throughout their network. Inclusive of harmonic measurements.

Detailed SVC specification studies and specification up and including contract award for a SVC at Dema Substation (Zimbabwe), including tender preparation, bid adjudication up to final commissioning verification.

Network master planning for Eskom Distribution.

Training course on SVC technology and systems and PSCAD Simulation Software.

Failure investigation into VSD drive (4 x 6.6MW) failures, including harmonic measurements, modelling and simulations.

Technical and Economic Feasibility Study for Mozambican Integrated Transmission Backbone System.

Detailed capacitor tuning and rating studies, including insulation co-ordination studies for transmission shunt capacitor banks at Omburu substation and Otjikoto substation. Assistance during project execution up to final commissioning. Inclusive of harmonic measurements.

Detailed system studies and specification up and including commissioning and performance verification for four (4) 660MVAR SVC’s, including tender preparation, bid adjudication, design review. Various shunt capacitor banks is also part of the scope of work: harmonic investigations, filter design and specifications.

Detailed system studies and specification up and including commissioning and performance verification for 200MVAR SVC’s in Dammam, including tender preparation, bid adjudication, design review.

Detailed system studies and network integration studies, cost estimates for the integration of the Suez 100MW gas power station in Mozambique.

Feasibility studies regarding insulation co-ordination and integration of nuclear power stations into the Eskom Transmission Grid.

Detailed EMT studies on six (6) 765kV series capacitor banks, including TRV studies (Alpha – Beta and Zeus/Mercury/Perseus).

Detailed grid code compliance studies for 14MW standby power station at Black Rock Mountain mine.

Detailed rating and tuning studies for the shunt capacitor banks at Esselen, Athene and Mersey.

AEG SVC upgrade projects:

A planning study was undertaken to evaluate the performance of Eskom’s Vaal South 275kV network. The study investigation evaluated the technical performance of the system, and alternative transmission reinforcement options were identified and investigated from both a technical and economic standpoint. The planning study also included a review of the grid compliance status of Lethabo Power Station to ensure that the requirements as stipulated by the National Energy Regulator was met and satisfied. This required, amongst other things, detailed load flow, fault level and transient stability investigations.

Development of a Low Cost Rural Electrification Plan (LCREP) to assist the Government of Mozambique (GOM) in fulfilling their vision of 20% of the nation’s population having access to electricity by 2020.

Harmonic integration study for the shunt capacitor banks at Sakaka A & B. Inclusive of harmonic measurements.

Network studies and investigations, and the compilation of Vector substation disaster recovery plan (Auckland and Wellington Regions) for TransPower New Zealand.

Investigate energy rating and location of 380kV surge arresters for the GIS at Qurayyah.

Detailed insulation co-ordination studies for the Cape Corridor 765kV system.

A review study considered the transmission integration of Mphanda Nkuwa 1300MW hydropower station to be located on the Zambesi River in Mozambique. The review study included the steady state analysis of the proposed 400 kV AC system solution (load flow fault level and power transfer capability calculations), an assessment of the risk of operating the planned AC system with the existing Cahora Bassa HVDC transmission system, and a review of the transmission capital cost estimates for the project.

PSD was commissioned by Eskom, the South African electric utility to conduct insulation coordination studies on the transmission systems that are planned to integrate proposed Open Cycle Gas Turbine (OCGT) generation facilities in South Africa. The scope of work included transmission line energization and switching study investigations, lightning studies, line ARC investigations, and an evaluation of the adequacy of installed surge arrestors.

Western Area SVC project included detailed system studies and specification up and including commissioning and performance verification for three (3) 660MVAR SVC’s, including tender preparation, bid adjudication, design review, RTDS testing of the SVC Control system. Inclusive of harmonic measurements.

Detailed capacitor tuning and rating studies, including insulation co-ordination studies for transmission shunt capacitor banks. Inclusive of harmonic measurements.

Detailed reactor studies, including insulation co-ordination studies for transmission connected busbar and line/cable connected reactors.

A study investigation looking at the integration of additional generation capacity at the existing Morupule Power Station in Botswana.

Engineering design, technical project management and testing and commissioning of the 400kV and 275kV Shunt Filter Capacitor banks.

Transmission System Integration Study Close to the town of Chibuto, Mozambique for the Corridor Sands Project.

Study investigation to find the best techno-economic solution to supply a possible 600 MW Ferro-Si/Manganese smelter load, to be located close to the town of Windhoek, from Auas 400/220 kV Substation.

Design review, Witnessing of Factory tests, Technical coordinator between supplier and utility, Testing and commissioning of HV plant for the replacement and upgrading of three 400 kV Luckhoff series Capacitor Banks.

Feasibility study on the proposed Caprivi High Voltage Direct Current (HVDC) Link. The services provided included Network Planning Studies, EMT studies, Determination of electrical parameters as input into functional specification, Development of functional specification.

Transient Studies (EMT), Load Flow Studies, Harmonic Studies and Technical Specifications for two SVC’s which were required as part of the Eastern Cape network strengthening plan.

Conduct the necessary Insulation Coordination study investigations for the proposed network extensions under the Coega IDZ development scheme.

Extensive studies including specifications for 380kV series capacitor banks. Bid adjudication, design review as well as detailed verification studies on TRV and RRRV, MOV rating verification, Fault performance verification.