Turbine Driven Generator Protection Upgrade
Madsen provided assistance to a major power producer in improving the shaft voltage and current monitoring system for their three steam-driven turbine generators. Boasting a combined generation capacity of 1266MW across the three turbines, the customer required a highly accurate and precise system. Madsen selected the appropriate system and recommended supplementary protective modules. Madsen oversaw […]
Generator Control Upgrade: Transitioning from Obsolete PLC to Easygen 3400XT
Madsen provided assistance to a customer in replacing the obsolete speed governing system on their Caterpillar 3408 gas engine, while also upgrading the generator controls from an obsolete PLC to the Woodward Easygen 3400XT on their backup generator. To upgrade the engine speed control, Madsen fabricated new bracketry to elevate the PCV capture tank and […]
Varistroke 1 Actuator Upgrade
Our Power Generation customer was dealing with an outdated Masoneilan actuator that was struggling to maintain control over the steam inlet to their turbine. Recognizing the need for an upgrade, Madsen supplied the customer with a new Woodward Varistroke 1 actuator, with a remote-mount servo and custom-designed mounting bracket and couplers. After receiving the customer’s […]
Alternate solutions to replacing aged static exciter systems
Over the years, many rotating exciters have been replaced for static exciters on synchronous machines. As these replacement static exciters age, much of the analog hardware becomes obsolete and can no longer be supported by the manufacturer, again forcing the replacement of the entire excitation system. The successful replacement of the analog controls with state […]
Replacement of existing dual ABB Unitrol F system
Customer needed to upgrade the existing controls with latest technology equivalent product to improve system serviceability, performance, safety and maximize unit availability and efficiency. DECS-250N is programmed using BESTCOMSPlus that provides: easy and intuitive logic diagrams to add flexibility to help create custom logic schemes designed to meet specific requirements Automatic tuning feature Real time […]
Ge ex2000 front-end upgrades
The GE EX2000 is one of the vintage excitation systems that needs to be modernized and upgraded because it is no longer supported. However, its obsolescence typically only involves the control electronics; the large power components, the power thyristor bridge, the breaker and the power potential transformer (PPT), usually remain viable as a working system. […]
Retrofitting steam turbines with modern peak 200 control platforms
Repeatable start-ups & minimized process upsets with precision speed control Upgrading your turbine from an old OEM mechanical or hydro-mechanical governor to the latest technology in digital speed control will enhance your turbomachinery performance. Once you upgrade your old mechanical governor with digital control, you will find that the turbine speed can easily be controlled […]
Retrofitting hydro turbines with modern 2300 control platforms
Site details: The generating units within the powerhouse comprise four horizontal-axis Francis turbines directly connected to synchronous generators. Units 1 and 2 are single-runner units with generator ratings of 2,150 kVA. Units 3 and 4 are both double-flow units (which allows for a higher turbine design speed to be achieved with a similar water flow) […]
Emergency generator reliability improvement
The integrated control system was built around the Woodward EasYgen controller. Woodward EasYgen3000 series will be integrated for auto start/stop of the engine, synchronize and load control, including breaker controls in case of failure of the utility bus. In combination with the LS5 utility breaker controller the new system has the ability to limit import […]
