Magnetically-Controlled Shunt Reactors (CSR)

Magnetically-controlled shunt reactor represents a unique technology that is used to stabilize voltage, enhance transmission capacity, and improve grid stability. Many years of experience and analysis of technical characteristics and functionality of this new technology among various energy utilities and electrical companies in different countries have demonstrated the high efficiency of CSR. In the last two decades, CSRs have been widely used across Russia’s power industry. CSR is one of the specialization areas of KPM, where the company carries out proprietary research and development.

Operating principle

CSR represents an electromagnetic reactor the inductance of which can be smoothly controlled by an automatic control system. This is achieved by deep saturation with controlled magnitude magnetic fluxes, which allows voltage regulation and stabilization. CSR is also used in combination with capacitor banks connected in parallel to maintain the required voltage in the network.

Field of application

CSR can be used in the power lines (line CSR) as well as in the electrical substation busbars. Also, CSR can be used in combination with capacitor banks. CSRs are generally used when SRs and capacitor banks do not meet local technical or operational requirements, as well as in situations when the installation of new equipment has better cost-efficiency.

The application of CSRs across the national electric grid reduces the losses and enhances the transmission capacity.

CSRs are increasingly replacing outdated non-regulated or step-controlled reactors as they have many advantages such as design and operational simplicity, technical performance, weight, dimensions, and cost. In combination with capacitor banks, CSRs function as synchronous or static thyristor compensators. The scaled application of CSRs is an efficient and cost-effective way to optimize grid operation as they improve the quality of power supply along with the operating conditions and service life of electrical equipment.

  • CSRs automate the voltage stabilization process
  • CSRs increase the transmission capacity up to 30% (according to the permissible voltage level)
  • CSRs reduce power losses in the grid
  • CSRs extend the transmission limit

In Russia, Rosseti grid operator recommends utilizing cutting-edge equipment when upgrading or retrofitting the national grid lines. This creates a barrier to obsolete technology. Rosseti’s technical policy contributes to the development of the related industries and necessitates the establishment of new manufacturing while also promoting new technology in the existing facilities.

KPM is doing R&D in the field of magnetically-controlled shunt reactors and has developed several innovations. KPM company has all the necessary permits and clearances for the construction, installation, and design of the power grid facilities.