The project addresses installation of SVC systems at Nahda & Car Complex 400kV Substations of Dubai Water and Electricity Authority.
The Scope of Consultancy Services covers tendering, design verification, supervision, witnessing FAT/type tests and warranty services etc. for the installation of +/- 200 MVAR Static Var Compensators at NHDA & CARX 400kV Substations.
SVCs were installed to provide fast acting continuously controlled reactive power to DEWA’s EHV system. This reactive power is primarily required for voltage control purposes under post fault system operating conditions when transient under or over-voltages may occur to provide dynamic stability to the System. The SVCs will also provide transmission system voltage support under normal system operating conditions during the natural daily load cycle. In addition, SVCs can provide voltage support to the transmission network when it is being restored under a black start condition. The SVC together with its associated plant and material necessary for the units to operate as a complete system are required for fast voltage support and transient stability applications associated with the interconnections and the large percentage induction type air conditioning loads in the network. The SVC shall provide adequate reactive power support to limit temporary over voltages, mitigate voltage instabilities and assist in preventing voltage collapse or motor stalling following system faults. SVCs with rating +200MVAr to -200MVAr, with 296MVAR TCRs, 116MVAR TSC & 84MVAR Harmonic Filters (3rd, 5th, 7th & HF), were installed at existing 400/132kV NHDA Substation and at 400/132kV CARX Substation.
Services provided
Technical data
Client
Dubai Electricity and Water Authority (DEWA))