Category Archives: Whitepaper
White Paper: Wind Project Repowering
Abstract As the global fleet of wind power projects continues to grow and age, and with significant improvements to turbine technology in the past decade, repowering is increasingly prevalent. The current trend favors partial repowering, in which the existing wind … Continue reading
Simulating Pressure Transient Events in the Fuel Gas Supply to a Multi-Block Combined Cycle Plant
Abstract As power plant combustion turbines (CTs) are pushed towards higher thermal efficiencies, increased attention is being given to operating requirements for their fuel gas supply such as the maximum allowable rate-of-change in pressure. It is important to perform detailed … Continue reading
A Clean Closure Success – Fox Lake Generating Station Interstate Power and Light Company
The U.S. EPA’s original Coal Combustion Residuals Rule (published April 17, 2015) included an exemption clause from most Rule requirements for inactive CCR surface impoundments that closed by either capping or removal before April 17, 2018. This exemption clause was … Continue reading
Advanced Technology Combustion Turbines in Combined-Cycle Applications
Abstract The latest advancements of F, G, H, and J-Class combustion turbines incorporate a variety of features to accommodate the requirements of today’s market. These market expectations include fast startup, deploying both base load and cycling operation, high ramp rates, … Continue reading
Power Plant Controls for the UHP Water and Power Facility
The selected plant configuration lends itself to a wide range of operating conditions with the capability of producing power and water nearly independent of each other. This results in a rather complex control scheme that includes many challenges such as the following: Continue reading
Assessment of Existing Equipment when Converting to Natural Gas Firing
It is strongly encouraged to maintain records of these monthly inspections to assess degradation and any modifications made to the equipment. This will help facilitate any inquiries to the original equipment manufacturer (OEM) on replacement parts and any upgrades required in the event either unit cofires coal in the future. Special attention should be given to dry rot, moisture, and corrosion. In the event that substantial dry rot or corrosion is detected, it is recommended to consult with the OEM for recommendations on corrective action. Continue reading
Challenges of Implementing Substation Hardware Upgrades for Enhanced Cybersecurity
Abstract To minimize the vulnerability of the electric power grid to cyberattacks the North American Electric Reliability Corporation (NERC), under the jurisdiction of the Federal Energy Regulatory Commission (FERC), has enacted and enforced cybersecurity standards that continue to evolve as … Continue reading
Perimeter Substation Physical Security Design Options for Compliance with NERC CIP 014-1
Abstract The electric utility industry has adjusted their thinking of substation physical security as a result of recent attacks and the issuance by NERC of CIP-014-1. As a result there is a substantial investment in upgrading existing station security and … Continue reading
First 500-kV Transmission Line for Tucson Electric Power
Abstract—Projections of population growth in the metropolitan Tucson area require that the electric transmission grid in the region be expanded and upgraded. A key component of this expansion is a new 500-kV transmission line northwest of Tucson originating at the … Continue reading
345-138 kV Substation Upgrade Project
Abstract A primary goal of electric utilities is to maintain reliable and stable service. Therefore utilities forecast and evaluate future power system scenarios and implement the necessary improvements to mitigate adverse impacts. The reliability and age of the existing substation … Continue reading
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