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Static Var

Compensators

Quality Power, in collaboration with Endoks Energy Systems from Turkey, provides comprehensive turnkey solutions for Static Var Compensation.

Static Var Compensators (SVCs) are devices engineered to control line voltages swiftly and dependably. SVC systems, which include reactive power compensation and harmonic filtering capabilities, are designed to mitigate the disruptive impacts of rapid reactive power fluctuations, voltage variations, and harmonics in electrical transmission or distribution systems and industrial facilities.

The installation of Static Var Compensators (SVCs) delivers substantial economic benefits across various areas of electrical power systems. Some key applications where SVCs significantly enhance performance and yield economic gains include:

Distribution Systems Feeding Disturbing Loads:
In industries where heavy and fluctuating loads are common, such as electric arc furnaces (EAF), ladle furnaces (LF), and rolling mills, SVCs help stabilize the voltage. This stabilization reduces downtime and increases the efficiency and productivity of these processes, directly impacting economic output.

Point of Common Coupling (PCC) of Renewable Energy Sources:
As renewable energy sources like solar and wind are increasingly integrated into the grid, SVCs at the point of common coupling help manage and smooth the intermittent power supply. This ensures a reliable and stable energy flow from renewables to the transmission and distribution system, facilitating higher penetration of green energy while maintaining grid stability.

Transmission Lines:
SVCs can also be installed along transmission lines to regulate and compensate for reactive power dynamically. This capability enhances the capacity and efficiency of existing transmission infrastructure, reducing the need for new lines and thereby saving on capital expenditure and maintenance costs.

Transformer Substations Feeding Critical Loads:
In settings where power quality is crucial—such as data centres, hospitals, and industrial plants—SVCs installed at transformer substations ensure a steady and reliable power supply. This not only protects sensitive equipment from power quality issues but also reduces operational interruptions.

Distribution Systems Feeding Railway Lines:
Rail systems often draw significant power, which can cause voltage fluctuations and affect the stability of nearby distribution networks.

By integrating SVCs into these strategic points within the power system, utilities and industries can significantly reduce operational risks, enhance overall efficiency, and achieve a quicker return on investment. The ability of SVCs to quickly respond to changes in load and generation conditions makes them indispensable in modern electrical networks, particularly as these networks evolve to include more renewable and variable power sources.

Static Var Compensators (SVCs) are a type of flexible AC transmission system (FACTS) technology that utilize power electronics to control power flow and improve the transient stability of power systems.

Dynamic reactive power compensation:
SVCs adjust reactive power to stabilize voltage levels in electrical networks.

Flicker reduction:
SVCs stabilize voltage fluctuations caused by varying loads, improving power quality.

Load balancing:
SVCs distribute power evenly across a network, preventing overloading of individual components.

Harmonics mitigation:
SVCs reduce unwanted harmonics in electrical systems, improving efficiency and reducing interference.

Dynamic voltage regulation:
SVCs regulate voltage levels in real-time to maintain system stability and reliability.

Enhancing system stability:
SVCs improve the overall stability of electrical systems by providing rapid and precise control over voltage and reactive power.

SVCs contribute to the economic vitality
of grids by:

  • Improving energy efficiency.
  • Elevating the quality of energy supplied by distribution companies.
  • Reducing active power losses attributed to reactive power flow.
  • Expanding the capacity of transmission and distribution systems.

SVCs deliver economic benefits
to power grids by:

  • Enhancing energy efficiency.
  • Improving the quality of energy supplied by distribution companies.
  • Reducing active power losses caused by reactive power flow.
  • Increasing the capacity of transmission and distribution systems.

SVC System Components:

SVC Control & Protection System:
Controls the operation of the SVC and ensures its protection against various electrical faults and abnormal conditions.

Thyristor Stacks:
Thyristor-based switching devices that control the flow of reactive power in the SVC by varying the firing angle.

Water Cooling System:
Maintains optimal operating temperatures for the thyristor stacks, ensuring efficient and reliable performance.

Shunt Reactor (TCR):
Provides additional reactive power compensation and voltage control, particularly during low-load conditions.

Transformer (TCT):
Steps up or steps down the voltage as required to match the system voltage levels.

Harmonic Filter Reactors:
Filters out harmonic distortion from the electrical system, ensuring cleaner power transmission and distribution.

Capacitor Banks:
Provides capacitive reactive power support when needed to balance the reactive power demand in the system.

Other Equipment:
Includes power transformers, medium voltage (MV) switchgear, measurement/protection transformers, protection relays, and remote monitoring/control systems, which are crucial for the overall operation, monitoring, and protection of the SVC system.

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