Nissan to lay off thousands of workers as sales drop    Trump picks Susan Wiles as White House chief of staff    Three charged in connection with Liam Payne's death    Israel passes law to deport relatives of attackers, including citizens    Monkey mayhem in South Carolina after 43 primates escape research facility    Russian anti-war teenager faces five years in jail after failed appeal    Uproar in Ghana after president unveils his own statue    BD and INS partner to elevate standards of infusion care in MENAT    Qassim emir launches 52 health projects costing a total of SR456 million    Dubai Design Week launches its 10th edition, celebrating creativity and innovation    Fakeeh Care Group reports 9M-2024 net profit of SR195.3 million, up 49% y-o-y driven by solid revenue growth and robust profitability    GASTAT: Passengers of public transport bus and train soar 176% and 33% respectively in 2023    HRT does not impact life expectancy — UK health body    Liam Payne's body to be flown back to the UK    Arab leaders and heads of state congratulate US President-elect Donald Trump    Neymar suffers muscle tear, out for 4-6 weeks    Suspect arrested for banking fraud totaling SR493 million as Nazaha pursues corruption charges    Al Nassr secures 5-1 victory over Al Ain to edge closer to knockout stage    Al Ahli extends perfect start with 5-1 victory over Al Shorta    Mitrovic's hat-trick leads Al Hilal to 3-0 victory over Esteghlal    India puts blockbuster Pakistani film on hold    The Vikings and the Islamic world    Filipino pilgrim's incredible evolution from an enemy of Islam to its staunch advocate    Muted Eid celebrations for millions of Nigerian Muslims    Exotic Taif Roses Simulation Performed at Taif Rose Festival    Asian shares mixed Tuesday    Weather Forecast for Tuesday    Saudi Tourism Authority Participates in Arabian Travel Market Exhibition in Dubai    Minister of Industry Announces 50 Investment Opportunities Worth over SAR 96 Billion in Machinery, Equipment Sector    HRH Crown Prince Offers Condolences to Crown Prince of Kuwait on Death of Sheikh Fawaz Salman Abdullah Al-Ali Al-Malek Al-Sabah    HRH Crown Prince Congratulates Santiago Peña on Winning Presidential Election in Paraguay    SDAIA Launches 1st Phase of 'Elevate Program' to Train 1,000 Women on Data, AI    41 Saudi Citizens and 171 Others from Brotherly and Friendly Countries Arrive in Saudi Arabia from Sudan    Saudi Arabia Hosts 1st Meeting of Arab Authorities Controlling Medicines    General Directorate of Narcotics Control Foils Attempt to Smuggle over 5 Million Amphetamine Pills    NAVI Javelins Crowned as Champions of Women's Counter-Strike: Global Offensive (CS:GO) Competitions    Saudi Karate Team Wins Four Medals in World Youth League Championship    Third Edition of FIFA Forward Program Kicks off in Riyadh    Evacuated from Sudan, 187 Nationals from Several Countries Arrive in Jeddah    SPA Documents Thajjud Prayer at Prophet's Mosque in Madinah    SFDA Recommends to Test Blood Sugar at Home Two or Three Hours after Meals    SFDA Offers Various Recommendations for Safe Food Frying    SFDA Provides Five Tips for Using Home Blood Pressure Monitor    SFDA: Instant Soup Contains Large Amounts of Salt    Mawani: New shipping service to connect Jubail Commercial Port to 11 global ports    Custodian of the Two Holy Mosques Delivers Speech to Pilgrims, Citizens, Residents and Muslims around the World    Sheikh Al-Issa in Arafah's Sermon: Allaah Blessed You by Making It Easy for You to Carry out This Obligation. Thus, Ensure Following the Guidance of Your Prophet    Custodian of the Two Holy Mosques addresses citizens and all Muslims on the occasion of the Holy month of Ramadan    







Thank you for reporting!
This image will be automatically disabled when it gets reported by several people.



SEC orders high-voltage transmission stabilization systems from Siemens
Published in The Saudi Gazette on 31 - 03 - 2010

Siemens Energy has received an order worth 65 million euros from Saudi Arabia to supply three turnkey static reactive-power compensation systems. Siemens will supply three static Var compensators (SVCs) for different high-voltage levels to Saudi Electric Company (SEC) for stabilization of the country's 60-Hertz power transmission network.
The parallel compensation systems will be deployed at three sites in the Hiteen, Qassim and Afif substations and are scheduled to be ready for operation between mid-2011 and early 2012.
“We are pleased that our field-proven technology will be deployed to stabilize the Saudi power transmission network,” said Udo Niehage, CEO of the Power Transmission Division of Siemens Energy. The three systems ordered are intended for the 380-kV, 132-kV and 33-kV voltage levels and will have a dynamic compensation capacity of as much as 800 MVAr.
Reactive-power compensation systems compensate voltage and load fluctuations in high-voltage transmission networks and thus ensure stable operation.
As a result of the increasing power demand in Saudi Arabia the local grid will be exposed to higher loadings and this will make it necessary to implement additional measures for grid stabilization.
The thyristor valves of Siemens SVC systems are equipped with direct light-triggered thyristors, which ensure enhanced reliability. The control system for the SVC systems is based on Simatic TDC, the field-proven multiprocessor automation system, which is deployed in particular in large systems for process, energy and drive technology.
Static reactive-power compensators with dynamic control are part of FACTS (Flexible Alternating Current Transmission Systems) technology. FACTS systems control the parameters, which dictate the operation of a power supply network and thus the quality of power transmission. These parameters include transmission impedances, currents, voltages and phase angles between the different system nodes.
With reactive-power compensation a distinction is made between parallel and serial compensation: serial compensation systems are capacitor banks inserted in the high-voltage cable run - possibly in combination with thyristor-controlled reactors (TCRs).
The fixed or variable serial impedance reduces the transmission angle so that higher active power can be transmitted without endangering grid stability. With parallel compensation a variable reactive power source feeds into a selected grid point via a transformer. This is where the required reactive power is generated to keep the voltage constant. Grid voltage may be subject to undesirable fluctuations as a result of load rejection or grid faults such as short circuits, which have to be quickly compensated.
This is the task fulfilled by static Var compensators (SVCs) within a power range previously matched to the grid in question. These systems are therefore always specially customized solutions.


Clic here to read the story from its source.