ABB has launched the next generation of its well established Dynacomp dynamic response compensator. It has been developed to provide fast and smooth reactive power compensation to solve a variety of industrial network power quality problems associated with variable loads such as: low power factor, voltage sags, flicker and high harmonic levels.
The Dynacomp unit acts as an ultra-rapid and transient free capacitor bank with the reactive power step switching carried out by state-of-the-art thyristor modules. These static switches and advanced controllers give the Dynacomp range a number of key advantages over conventional contactor switched capacitor banks, including: ultra-rapid power factor compensation; reduced voltage drop and flicker; transient-free switching; very high number of switching operations; modular and compact standardized design; easy to install and extend; and advanced communications features with Modbus.
The new Dynacomp products are equipped with an advanced controller and offer a wide power range for network voltages ranging from 380V to 690V. They are available in both threephase and single-phase versions and there is also a choice of detuning reactors to suit all types of application.
Starting from a few hundred kvar, the new Dynacomp range is available for applications up to several Mvar, enabling it to cater for even the largest loads. Its modular design and CAN bus control make it easy to build a system with the necessary power rating to suit the exact load requirements using standard power units. It is also simple to extend the Dynacomp to meet the changing needs of the future.
In addition to reactive power compensation, the Dynacomp also partially filters harmonic currents, reducing total harmonic distortion and improving network power quality.
RVT-D Controller
The new Dynacomp range features ABB’s new RVT-D controller equipped with Modbus communication which simplifies integration within an existing communication network.
Dynacomp is designed to operate in open loop or closed loop control, or with external trigger, and can easily meet the reactive power needs of even the most demanding loads. A unique feature of the RVT-D controller enables compensation of the voltage drop due to the active part of the load current. This enables Dynacomp units to provide optimum flicker mitigation, even in a weak network.
ABB has designed the Dynacomp range to be as environmentally friendly as possible in compliance with ISO14001 certification.