Project B16: controlled shunt reactor at INPP 330 kV switchyard

IGNALINA NUCLEAR POWER PLANT (INPP)

During operation and final decommissioning of Ignalina Nuclear Power Plant (INPP) it was important to ensure voltage level control at Ignalina power management unit. When INPP was in operation, voltage level was controlled by turbine generators, which adjusted reactive power consumption. After the final decommissioning of both blocks, the voltage level is adjusted by a controlled shunt reactor (CSR), which was installed in the open switchyard (330 kV ATS) of Ignalina NPP.

On 17 October 2006, the consortium agreement between UAB Ekobana (Vilnius, Lithuania), UAB Kauno energetikos remontas (Kaunas, Lithuania), and Siemens AG (Germany) was signed.

Auxiliary equipment necessary for ensuring connection to the 330 kV network was supplied along with the CSR: high voltage sulphur hexafluoride circuit breakers, cut-out switches, measuring transformers, busbar structures, various systems (remote control, signal, data transfer, electricity metering), relay protection, system automation and fire extinguishing equipment, etc.

AS PART OF THIS PROJECT, THE FOLLOWING WORKS WERE CARRIED OUT:

• Designing the CSR unit
• Delivering the equipment and construction, assembly and commissioning works:  Installation and commissioning of relay protection and automation (RPA) equipment; manufacturing and supply of primary electrical equipment and RPA equipment; development and supply of software for remote control, alarm, and data transmission systems, their installation and commissioning; manufacturing and supply of CSR equipment; designing, manufacturing, and adjusting the CSR equipment as well as engineering support for network testing and installation.

The reactor start-up and adjustment tests were completed in September of 2008 and the reactor is currently in operation.

This project was financed by the Ignalina International Decommissioning Support Fund, administered by the European Bank for Reconstruction and Development.