What is an exhaust temperature spread, and why is it so important to monitor and take appropriate action when an exhaust temperature spread develops? An exhaust temperature spread refers to a high differential in readings between the thermocouples placed radially around the exhaust of a gas turbine. The worst exhaust temperature spreads occur when the […]
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Increases in renewable energy on the power grid have increased the need for reliable peaking power. In many cases, these assets are available but less reliable than they once were due to the age and neglect of their control systems. In most cases, refurbishment of digital systems from the last 30 years is a viable […]
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In the power generation industry, most large generators are cooled by hydrogen gas. Hydrogen has excellent thermal conductivity properties, but it is also explosive and flammable when mixed even in small amounts with ordinary air. If a unit will be offline for a while, for example, for a planned maintenance outage, the hydrogen must be […]
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Power plant control and monitoring can be complex given the need to integrate many different platforms. Adding to the complexity is the fact that HMI’s (Human-Machine Interface) supplied by the OEM often only interface with the OEMs controller and not with ancillary systems. Lastly, ongoing support and updates from the common operating system may be […]
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About MD&A With a rich 35 years of experience in the power generation industry, Mechanical Dynamics & Analysis is the most trusted company for turbine-generator needs. Our commitment to excellence has earned customer trust for all turbine-generator needs. We focus on delivering consistent quality and value with fast response, superior communications, and innovative solutions. MD&A […]
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M&DA Control Systems recently analyzed Steam Turbine Valve Actuator Diagnostics to establish a plan for Predictive Maintenance. Hysteresis Test data was gathered and utilized to establish an in-service predictive maintenance practice. This practice has allowed the customer to optimize their unit’s operational availability while reducing their maintenance costs. The predictive approach allows savings to be […]
Read MoreMechanical Dynamics & Analysis is a steam & gas turbine and generator full-service provider. MD&A began in 1982 as a small engineering firm supporting power generation companies with third-party consulting services. Since its inception, MD&A has maintained an entrepreneurial culture and has focused on outstanding customer service. As a result, over 40 years later, MD&A has […]
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Routine inspection and cleaning of bus areas are key to preventing forced outages in high voltage electrical systems. During a recent customer inspection, an MD&A expert found a situation in an EX2100e static exciter where corrosion of a bus bolt could have led to a significant destructive event. On-site fabrication of a new bus bar […]
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Mechanical Dynamics & Analysis’ Control Systems Division (MD&A Control Systems) replaced an industrial co-gen turbine’s original mechanical-hydraulic (MHC) controls with an electronic governor, electro-hydraulic trip system and self-contained control valve actuator. The primary drivers for the project were the operator’s desire to increase the long-term maintainability and reliability by replacing the MHC components that had […]
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