- BuildingDesign Construction Portal
  • Request Product Information
  • Connect With Us
  • Follow BuildingDesign on Twitter Connect with BuildingDesign on LinkedIn Become a fan on Facebook Follow BuildingDesign on Pinterest Follow BuildingDesign Media on Google+

ABB Power Grids - Active Harmonic Filters

Active Harmonic Filters - Power Factor Correction - ABB Power Grids

Comprehensive Solutions - Harmonic Active Filtering

Modern electrical equipment imposes stringent demands on voltage stability and power quality. The power network has to be free from harmonics and other electrical disturbances.

By installing harmonic filters several benefits are obtained:

  • Higher power factor, improved voltage stability & network losses
  • Filtering of harmonics in the system
  • Reduced resonance problems / amplification of electrical disturbances.

A “clean” network also imposes much less strain on equipment and lengthens its life span. This means lower maintenance costs and lower costs for replacing worn-out equipment.

What problems can harmonics cause?

  • Increased losses, with machinery & cabling operating at increased temperatures
  • Resonance between inductive & capacitive parts of the power network
  • Malfunctioning of control systems since electronic meters, relays, etc. are matched to the fundamental frequency
  • Overloading of capacitors, leading to malfunctioning & premature aging
  • Interference with telecommunications & computers
  • Disturbances in ripple control systems
  • High currents in neutral conductors

Harmonics are not only found in industrial networks, they can also spread into the distribution network and cause problems for other power users.

The ABB Power Quality Filter (PQF) eliminates the harmonics present in the supply system. It is insensitive to large network impedance changes due to change in network topology such as paralleling of sources, or switching between mains supply and generator operation.

An ABB PQF active filter is designed for installation in parallel to the polluting loads. It monitors the line current harmonics, as well as the requirements programmed by the user. It then generates for each harmonic frequency a compensation current in perfect phase opposition that effectively cancels it out. This is achieved by monitoring the line current in real time and processing the measured harmonics as digital signals in a high-power multi-DSP (Digital Signal Processor) based system.

The use of a closed loop control system in combination with the capability to select individual harmonic components makes the ABB PQF active filter the most precise active filter on the market.

The use of active harmonic filters enables installations to comply with the most stringent of harmonic regulations and guidelines such as IEEE 519, G5/4, etc.

Unlike other active filter products on the market, the ABB PQF active filters make it possible to set individual harmonic target limits as imposed by regulations.

The PQF also offers Modbus RTU communication facilities with the customer’s existing communication network, enabling the PQF to be easily monitored and controlled from a remote location.

Medium Voltage Power Factor Correction Solutions

ABB’s ABBACUS is a packaged reactive compensation system which combines both primary components and secondary control and protection systems within a compact modular enclosure. The system can be configured as either a fixed or switched capacitor bank. The switched bank consists of single or multiple steps, automatically controlled to improve power factor.

ABBACUS has been developed to provide effective power factor correction for both electrical distribution utilities and large industrial power users including mining, pulp and paper, chemical, petrochemical, wind farms, plastics and heavy industrial applications.

The ABBACUS is available in a range of MECB (Metal Enclosed Capacitor Bank) models and is suitable for voltage ranges between 1kV and 24kV – for higher voltages please contact ABB.

Design Configuration

The ABBACUS design consists of an incoming module and/or connecting power modules housing the primary equipment with optional secondary and ancillary equipment kits. This modular approach allows future expandability.

Incomer Module

The incomer module facilitates connection to the customer network. It comprises a high voltage compartment and a control cubicle allowing for a single point termination of power cables and control wiring.

Power Module

The ABBACUS power modules, when energised, generate the reactive power. They are designed to be interconnected to each other and the incomer module. An appropriate power module can be selected depending on the required application.

Total Service Approach

ABB is committed to a total power quality service approach that goes well beyond supplying just the equipment. Thanks to the unrivalled technical backup of the global ABB organisation, we support our customers through every step of the project, from establishing the problem, identifying the ideal solution and then installing and commissioning your power quality equipment. For complete peace of mind, we offer a comprehensive equipment maintenance and repair service anywhere in the UK.

Click the PDF image to view the technical information in full

ABB Power Grids Logo

Request ABB Info

ABB Ltd
Unit 6 Riverview Business Park
Riverview Road
Bromborough
CH62 3RR

Email ABB Power Grids

Tel: +44 (0) 151 357 8400
Fax: +44 (0) 151 355 9137

View / Print Content (PDF)

Click to enlarge

Request Information From ABB Power Grids - for UK and Europe only

  • *Full Name
  • *Company Name
  • *Telephone
  • *Email
  • *Enter Short Description of Your Requirements
  • *Please enter numbers shown for validation purposes