Synchronous Condenser System
Hitachi Energy's Synchronous Condensers System increased network stability and support higher volume of renewable generation in the network. Synchronous Condensers is a well proven technology that Hitachi Energy has integrated in a modern system solution to meet todays and future grid challenges.
Hitachi Energy's efficient and reliable synchronous condenser system supports the grid with short-circuit power capacity, inertia, and reactive power to balance voltage fluctuations and minimize disturbance during fault conditions. High LVRT capacity ensures short-circuit power in the grid during extremely low voltage conditions.
The fast and compact solution, cutting-edge technology, and fully compatible control equipment deliver the best performance and optimum cost efficiency with extremely low harmonic emissions. The control system manages to regulate the connection point on the HV side of the step-up transformer and not only on machine terminals, making the reference setting easier for the user.
Hitachi Energy's Synchronous Condenser System cover 10 - 200 MVAr range with single-machine solutions. Installation of larger machines or when 100% redundancy is required, a multi-machine installation with coordinated control can be installed. This solution is based on a modular concept.
To ensure enduring and reliable operation, our Synchronous Condensers are designed for high reliability, durability, and the capability to operate for long periods between recommended service intervals. Hitachi Energy bases its solution on brushless synchronous machines with pony motor start. This setup reduces maintenance and gives a simple and reliable start/stop procedure.
Hitachi Energy's Power Quality and Power Consulting departments, with extensive experience in solving power quality issues for different kinds of customers around the world, can support in defining the exact configuration and size of the required compensation system. Our delivery capabilities include Synchronous Condenser Systems as well as, hybrid configurations with STATCOMs, which are optimal solutions when short circuit and inertia issues are combined with other power quality challenges.
Key Benefits
Additional short-circuit power
Increased transmission capacity and excellent fault ride-through capability
Hybrid STATCOM configuration benefits
Combines the dynamic performance of STATCOM systems with hybrid solutions for optimal flexibility, efficiency, and performance
Heavy inertia contribution
Improves network stiffness and dynamic stability, supporting frequency control and transient performance.
High overload capability
Provides sustained support during prolonged voltage sags and abnormal grid conditions
Synchronous Condenser System (SCS) strengthen power systems by delivering inertia and short‑circuit current when needed, stabilizing voltage and frequency, and creating the robust grid foundation needed to reliably integrate higher levels of renewable energy. Hitachi Energy solution takes advantage of our large experience with other grid stabilization system to secure solution from machine to full fledge control system of the SCS.
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Frequently Asked Questions
Adding flywheel can significantly increase inertia >5 times. But it has no impact on reactive power and short circuit contribution.
During low voltage scenarios, the machine can give significantly more power than rated MVA. 2,5 times rated current during 10 s and 1,5 times during 60 s and for longer periods is it possible to utilize higher temperature rise.
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