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Emerson Actuator replacement solves turbine bypass problem
As often as four times a year during winter months, a power plant in Wisconsin would miss a scheduled start of its combined cycle power plant due to malfunctions of the turbine bypass valves. This article describes how the problems were solved by replacing the actuation components on those valves.
Revision Date: 10/17/2019
Tags: 221118 - Other Electric Power , 211111 - Crude Petroleum and Natural Gas Extraction 原油和天然气开采, Emerson Electric, Valve, USA
Modernizing Old Plants to Meet New Demands
Much of the maintenance inspection in power plants is manual. Energy is wasted by steam loss and inefficiencies. Not all air and water emissions are checked. Imagine instead a power plant full of sensors that continuously monitor the condition of pumps and fans, detecting failure of steam traps or leaking relief valves, and where all emissions are monitored. Instead of operators collecting the data, the data comes to the operators. Much of the maintenance inspection in power plants is manual. Energy is wasted by steam loss and inefficiencies. Not all air and water emissions are checked. Imagine instead a power plant full of sensors that continuously monitor the condition of pumps and fans, detecting failure of steam traps or leaking relief valves, and where all emissions are monitored. Instead of operators collecting the data, the data comes to the operators. Power plants are being modernized with a pervasive sensing infrastructure for a second layer of automation. This is a new strategy for maintenance, energy efficiency, risk reduction and optimization using sensors which require no wires and are mostly non-intrusive and therefore can easily be deployed. Specialized diagnostic software in a separate system distills the raw sensor data into actionable information, such as which equipment needs service and which does not. Wireless sensor networks and analytic software are new technology trends enabling new levels of availability, energy efficiency, environmental compliance and productivity. Pervasive sensing infrastructure is the basis for the Internet of Things, which will take sensing even further in the future.
Revision Date: 1/11/2017
Tags: Emerson Automation Solutions, Automation, Monitoring, Power Engineering
Barking CCGT uses Emerson wielessHART® to monitor steam traps and valves
Sophisticated WirelessHART® acoustic “listening” technology combined with an integrated temperature measurement was deployed across the plant to monitor steam traps, PRV's and vent valves. This innovative combination of technologies offered a reliable and cost effective solution for identifying the problems that lead to unscheduled downtime, poor turbine efficiency and energy loss. A total of 100 Rosemount TM 708 Wireless Acoustic Transmitters were non-intrusively installed on critical vent valves, steam traps and PRV's. Barking had previous experience with a WirelessHART network in the plant. Despite the vast distance covered by the network and the tough environment introduced by the power plant, the wireless network proved to be very reliable. This gave Barking confidence to use Emerson's Smart Wireless technology for this new application.
Revision Date: 1/11/2017
Tags: Emerson Automation Solutions, Remote Monitoring
Modernizing Old Plants to Meet New Demands
Much of the maintenance inspection in power plants is manual. Energy is wasted by steam loss and inefficiencies. Not all air and water emissions are checked. Imagine instead a power plant full of sensors that continuously monitor the condition of pumps and fans, detecting failure of steam traps or leaking relief valves, and where all emissions are monitored. Instead of operators collecting the data, the data comes to the operators. Much of the maintenance inspection in power plants is manual. Energy is wasted by steam loss and inefficiencies. Not all air and water emissions are checked. Imagine instead a power plant full of sensors that continuously monitor the condition of pumps and fans, detecting failure of steam traps or leaking relief valves, and where all emissions are monitored. Instead of operators collecting the data, the data comes to the operators. Power plants are being modernized with a pervasive sensing infrastructure for a second layer of automation. This is a new strategy for maintenance, energy efficiency, risk reduction and optimization using sensors which require no wires and are mostly non-intrusive and therefore can easily be deployed. Specialized diagnostic software in a separate system distills the raw sensor data into actionable information, such as which equipment needs service and which does not. Wireless sensor networks and analytic software are new technology trends enabling new levels of availability, energy efficiency, environmental compliance and productivity. Pervasive sensing infrastructure is the basis for the Internet of Things, which will take sensing even further in the future.
Revision Date: 1/5/2017
Tags: Emerson Electric, Coal, Valve, Pump, Automation, Monitoring, Power Engineering
Revision Date: 8/9/2016
Tags: Emerson Electric, Gas Turbine, Reciprocating Engine, Optimization, Combustion, Heat Recovery
NOx reduced with controlling fuel/air ratio with Emerson Coriolis Meter
Installing Coriolis meters as part of air-fuel ratio control systems in more than 70 installations has solved many problems in antiquated natural gas piston engines that drive natural gas compressors. In addition to a payback as short as four months, the benefits include direct mass flow measurement, reduced maintenance, lower fuel consumption (15-20%), lower emissions (typically greater than 50%) and reduced engine wear.
Revision Date: 7/28/2016
Tags: Emerson Electric, reciprocating engine, Control System
Fisher Offers Full Range of Control Valves for Power Plant Applications
Fisher offers a full range of control valves for conventional, as well as combined cycle, power plants.
Revision Date: 4/22/2015
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Fisher Company, Emerson Process Management, Valve, Schematic, Flow Control
This case study describes a sky vent solution for a heat recovery steam generator (HRSG) which addresses noise and vibration concerns at a combined cycle power plant in Texas. The solution incorporated a whisper Trim III noise attenuating flow cage along with a downstream diffuser.
Revision Date: 9/8/2014
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, Sargent & Lundy, Heat Recovery Steam Generator, Control Valve, Valve, Noise, Vibration, USA
Sky-vent system from Emerson insures temperature control of turbine during startup
Valves within the sky vent system of a combined cycle plant serve one of the more important control functions. During initial operation of the HRSG, these valves bypass steam (HP/HRH/LP) around the steam turbine to ensure that the unit doesn't come up to temperature too quickly. This is done as the process lines are warmed prior to admitting steam through the turbine bypass valves that dump to the condenser.
Revision Date: 6/10/2014
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, Control Valve, Heat Recovery Steam Generator, Valve
Emerson Continuous Emissions Monitoring Systems (CEMS) for gas turbines and other applications
With over 3,000 CEMS installations in the field worldwide, Rosemount Analytical combines the expertise and field-proven technologies with the most rugged sample conditioning and extraction systems in the industry to provide superior measurement accuracy and repeatability. Designed in consideration of CEM regulations as specified in clean air laws around the world, including U.S EPA 40 CFR Part 75 and 40 CFR Part 60, we help you meet data reporting requirements, maintain emissions compliance, and ensures certification and compliance with your local and international regulatory agencies.
Revision Date: 4/15/2014
Tags: Emerson Electric, Analyzer - NH3, Continuous Emissions Monitor, Monitoring, Ammonia Monitoring
Emerson Process Managment Company Profile in the Combined Cycle Journal, October 1, 2013
Backed by five decades of power industry expertise and proven, long-term service and support, only Emerson offers complete control system retrofits on all major gas turbines, steam turbines and generators. Designed specifically for the power industry, our Ovation™ control system offers features that general-purpose control systems simply don’t have including fully coordinated boiler and turbine control, integrated generator exciter control, automated startup and shutdown sequencing, fault tolerance for failsafe operation, extensive cyber security features and embedded advanced control applications that can dramatically improve plant reliability and efficiency.
Revision Date: 10/23/2013
Tags: 221112 - Fossil Fuel 化石燃料, Emerson Process Management, Control System, Distributed Control System, Combined Cycle Journal