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Harmonic studies for offshore windfarms
This paper presents the methodology for conducting harmonic studies for offshore windfarms. The high level harmonic models used to represent wind turbine generators, dynamic reactive power compensation plant and background voltage distortio...
A new 500MW back - to - back station to provide power exchange between Uruguay and Brazil
The transmission system operator in Uruguay (UTE) has contracted ALSTOM Grid to build a 500MW inter-connector with Brazil. As the 500kV transmission system in Uruguay operates at 50Hz and the Brazilian 525kV transmission system operates at ...
Ultra-high power thyristor valves for HVDC in developing countries
In the last 3 years, HVDC technology has been extended to much higher voltages and currents than before, particularly for large back to back and interconnector schemes in rapidly developing countries such as China and Brazil. HVDC schemes a...
Demonstration and implementation of technical scheme for Ningdong-Shandong ±660 kV DC Power Transmission Project
Ningdong-Shandong ±660 kV DC Power Transmission Demonstration Project is the first ±660 kV DC transmission project built around the world. It is also the symbolic project at this voltage level and one of the major West-East Power Transmissi...
Life extension issues for HVDC control systems
Digital based HVDC control and protection system are a common place reality. Experience since the initial installations of these digital control systems indicate clearly that at least one control system replacement can be expected in any sy...
Harmonic performance requirements of an HVDC connection; network owner perspective
In the UK, National Grid Electricity Transmission (NGET) is required by its Transmission Licence to apply and comply with the Grid Code. The Grid Code requires that for Electromagnetic Compatibility Levels for harmonic voltage distortion, E...
HVDC - enabling the transition to an energy system based on renewables
Submarine cable transmission and grid interconnections will play a critical role in enabling Ireland and the UK to develop their rich renewable energy resources, in particular offshore wind power. Generation based on renewables has a rapidl...
Description and evaluation of 3-level VSC topology based statcom for fast compensation applications
Traditional SVC is a cost effective FACTS device for reactive power control and flicker mitigation. STATCOM offers enhanced performance for power quality maintenance to a higher cost. Improvements of power semiconductors have opened new pos...
Enhancing the transmission capability using FACTS: The Finnish experience
The transmission capability of the Finnish transmission network over the main power transfer intersections is restricted by stability limits. Since the deregulation of the electricity markets started in Finland back in 1995, Fingrid as Finn...
Introducing series compensation in the UK transmission network
This paper highlights several key aspects of introducing series compensation (SC) in the UK transmission network and those requirements which would require the use of thyristor controlled series capacitors (TCSC) rather than the simpler fix...