ABB UNITROL 6080 Mature and flexible solution of excitation system

ABB UNITROL 6080 Mature and flexible solution of excitation system

Setting the standard ABB is the world leading volume supplier of UNITROL automatic voltage regulators (AVR) and static excitation systems (SES) for any type and size of power plant - known to provide a high return on investment since many years. UNITROL 6080 AVR/SES are designed for small to medium power applications and brings a new benchmark in flexibility, reliability and connectivity. Key benefits + Ultimate control performance keeps generator within safe limits High performance control platform AC 800PEC + Easy system operation, monitoring and maintenance User-friendly excitation control terminal (ECT) + Short delivery time Uses well-proven prefabricated functional modules + Optimized contribution to network stability Integrated power system stabilizer (PSS) options + Compact design, space saving installation No rear access required – can be positioned close to a wall or back-to-back + Offline tuning with closed loop real time generator simulator Offline system tuning and testing of severe system conditions (integrated or external option) + Efficient product life cycle management Extended life time of assets with minimum costs + Technical support always within your reach ABB’s global excitation service network Tailor-made system Main features Selected applications UNITROL 6080 uses well-proven prefabricated functional modules. With single / double channel configuration (additional backup channel on request) and a wide selection of thyristor bridge modules, the system can be configured to meet all field data and availability requirements. + Selectable redundancy for control, power module, cooling, I/O, communication and auxiliary power + 64 bit floating point CPU + No restrictions regarding data scaling and range + Fast and precise measurements and control scheme + Compliant with international and local standards + Complete range of functionality to cover any grid codes + IEC 61131 application software programming with ABB Control Builder M + Fully compatible with ABB’s Extended Automation System 800xA + Pump storage power plant, Ifn 760 A + Nuclear power plant AVR, Ifn 180 A, 400 Hz supply + Engineered solutions + Pole changing for dual speed machines + Online supply transfer + Electric braking + Sheet metal partitions between channel and control compartments

ata and event recording System time synchronization The internal event recorder function can handle and store up to 2,000 events, each provided with a real-time stamp. The data recorder contains a preconfigured part that can record 30 signals / 1,500 data points each, and a freely configurable part for 8 signals / 1,500 data points each. The display and analysis of the recorded data is done by means of the excitation control terminal software. If the AVR / SES is equipped with an excitation control terminal, the recorded data are downloaded into its memory to be available independently of the main controller. The system clock of all the controllers can be synchronized with a time source by SNTP (simple network time protocol) with an accuracy better than 1 ms. The time signal can be sourced internally (from the excitation control terminal) or externally from the plant LAN (Ethernet). With an optional receiver, GPS (global positioning system), DCF77 (Europe) or IREG-B (Asia, the USA) signals can be used as well. Closed-loop control – Voltage regulator with PID filter (AUTO operating mode) – Field current regulator with PI filter (MAN operating mode) – Reactive and / or active current droop compensation – Limiter circuits for – Maximum and minimum field current – Maximum stator current, dependent on machine cooling media temperature – P/Q under-excitation – Volt / Hertz – Manual restrict – Power factor / reactive load control – Power system stabilizer Protection and monitoring functions Monitoring and protection functions can be freely configured on three different action levels: – Alarm signal only – Changeover of redundant circuits – Instantaneous excitation trip for protection purposes Major available functions – Overcurrent protection (instantaneous / inverse time) – Volt / Hertz protection – Loss of field protection – Rotor temperature – Thyristor conduction monitoring – Actual value monitoring – Field flashing time limit C

Power system stabilizer (PSS) For many years, ABB has been involved in the development and application of power system stabilizers. The PSS function improves the stability of the generator and the transmission system as a whole by using the excitation to damp power oscillations. – According to IEEE standard 421.5-2005 PSS2A / 2B – According to IEEE standard 421.5-2005 PSS4B multiband PSS (on request) – Adaptive PSS (APSS) developed by ABB in Switzerland