The WOODWARD 8200-1302 is a high-performance digital hydraulic actuator manufactured by Woodward, Inc., a global leader in control systems for industrial turbines and engines. This actuator is designed to provide precise and reliable positioning of fuel valves, inlet guide vanes, or other final control elements in critical power generation and mechanical drive applications.
In a combined-cycle power plant, the gas turbine must rapidly adjust its fuel flow to meet sudden changes in grid demand while maintaining low emissions. The WOODWARD 8200-1302 actuator is directly coupled to the fuel skid control valve. It receives a precise positioning signal from the turbine controller (such as a Woodward 505 or Micronet) and uses integrated hydraulic power to move the valve with exceptional speed and accuracy. This direct, high-fidelity control is essential for maintaining combustion stability, optimizing fuel efficiency, and ensuring compliance with environmental regulations during transient conditions.
Main Parameters | Value/Description |
Product Model | WOODWARD 8200-1302 |
Manufacturer | Woodward, Inc. |
Product Category | Digital Hydraulic Actuator |
Control Input | 4-20 mA or ±20 mA (Industry-standard control signal) |
Position Feedback | Internal LVDT (Linear Variable Differential Transformer) for high-accuracy closed-loop control |
Hydraulic Supply Pressure | Typical range 1500-3000 psi (Requires external hydraulic power unit) |
Stroke Length | Varies by specific configuration (Customizable for the application) |
Communication Protocol | Capable of integration with Woodward NetCon or other networks |
Enclosure Rating | Robust housing suitable for industrial environments |
· •Innovation Point 1: Integrated Digital Electronics and LVDT Feedback. The 8200-1302 incorporates a sophisticated digital controller and a high-accuracy LVDT within a single unit. This integrated design allows for precise closed-loop control of the actuator's position, resulting in faster response times and greater accuracy than systems with separate components, leading to improved process stability.
· •Innovation Point 2: High-Force Hydraulic Actuation. Utilizing hydraulic power, the actuator generates very high output forces, enabling it to operate large valves quickly and reliably even under high-pressure differentials. This makes it suitable for the most demanding turbine and compressor control applications.
· •Innovation Point 3: Advanced Diagnostics and Communication. The actuator provides valuable diagnostic information, such as LVDT health and actuator performance data. This capability, often accessible via communication networks, enables predictive maintenance, allowing issues to be identified and addressed before they cause unscheduled downtime.
A natural gas compressor station driven by a gas turbine experienced issues with surge control during rapid pipeline load changes. The existing actuator had a slow response, risking compressor surge. After retrofitting with the WOODWARD 8200-1302, the station achieved a 50% improvement in the response time of the anti-surge valve. The actuator's precise and rapid positioning allowed the compressor to operate much closer to the surge line safely, increasing overall station throughput and efficiency by approximately 5%, while completely eliminating surge events.
· •WOODWARD 505 Digital Speed Control: A turbine governor that can provide the precise speed and load control signals to the 8200-1302 actuator for comprehensive turbine management.
· •WOODWARD ProAct Digital Servo Valve: A high-performance servo valve that can be used in systems where the 8200-1302 is part of a larger hydraulic control circuit.
· •WOODWARD Micronet Plus Control System: A comprehensive PLC-based control system that can be programmed to provide advanced control logic for the 8200-1302 actuator.
· •WOODWARD S3200 Static Excitation System: For electric power generation applications, this system works in concert with the prime mover controlled by actuators like the 8200-1302.
· •Hydraulic Power Unit (HPU): A required support system that provides the cleaned and pressurized hydraulic fluid to power the 8200-1302.
Installation of the WOODWARD 8200-1302 requires connection to a hydraulic power source, the mechanical linkage to the valve, and the electrical control and feedback wiring. Proper alignment and commissioning are critical for optimal performance and longevity. Configuration of gain and response parameters is typically done via Woodward's service tools.Routine maintenance includes monitoring hydraulic fluid cleanliness, checking for leaks, and verifying the calibration and performance of the LVDT feedback system. The actuator's diagnostic capabilities are key to a proactive maintenance strategy. We provide comprehensive support, from initial application engineering and installation supervision to troubleshooting and repair services. We guarantee access to genuine WOODWARD 8200-1302 actuators, repair kits, and technical expertise.
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