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5154: Power Quality Impact of Electric and Plug-In Hybrid Vehicles

The continued increase of gas prices and concern on greenhouse gas emissions in recent years have led to gradual acceptance of electric vehicles (EV) by consumers, especially the plug-in hybrid electric vehicles (PHEV),. As these vehicles draw power through power electric circuits from the utility grid when they are being charged, utility companies are concerned with the potential power quality impact of mass penetration of EVs and PHEVs. This project investigates the impact of the PHEVs on both

Oct 6, 2011 - Mar 1, 2013

PQ

Research

3736: Ground Potential Rise Transferred Potentials Along Feeder Grounding Systems

GL

Research

3336: Strength of Steel Angles Subjected to Short Duration Axial Load

This report presents the results of a test program to determine the compression strength of single angle members subjected to short duration axial load, also referred to as Rapid Load. Lattice steel transmission towers are largely constructed of single angle members. When a conductor breaks, the load on the tower is of large magnitude but short duration. This research attempts to answer two questions: 1) do angles in transmission towers have a higher compressive strength under short duration axi

OTD

Research

50107: Best Practices For A Risk-Based Approach To Vegetation Management Of Distribution Lines

In order to arrive at best practices for risk-based approach to Integrated Vegetation Management on distribution lines, a review of topics related to distribution vegetation management and a survey of 15 utility distribution vegetation managers were conducted. Specific topics of interest included: ROW vegetation management, integrated vegetation management (IVM), remote sensing, light detection and ranging (LiDAR), risk management related to utility vegetation management, utility vegetation mana

Nov 18, 2011 - Feb 14, 2013

DEP

VM

Research

50164: Distribution Planners Manual Update

The 2015 version of the Distribution Planner’s Manual requires updating to account for the latest demands on the planning of the distribution system. Utility planners wrote the original manual from 1982, containing 14 sections covering various topics such as load forecasting, reliability evaluation, and loss mitigation. CEATI developed the update in 2015 to acknowledge that plenty has changed since its original publication.The manual has been extensively updated, including separating the origina

DEP

Research

0512: Demonstration and Evaluation of 1 MW/7.2 MW-hr NAS Battery at Long Island Bus Company

Electric utilities, energy service companies and utility customers lack familiarity with distributed electric storage systems. Demonstration projects highlighting the benefits, safety, and effectiveness of such systems will promote their propagation. The benefits derived from the storage of electrical energy are well defined in the EPRI-DOE Handbook of Energy Storage for Transmission and Distribution Applications, EPRI, Palo Alto, CA, and the U.S. Department of Energy, Washington, DC: 2003. 1001

E&IS

Research

3327: Real-Time Monitoring Of Energized Overhead Transmission Lines For Thermal Rating, Clearance Measurement And Climatic Data (Temperature, Wind And Ice)

This report reviews the current state of the art for real‐time monitoring of overhead transmissionlines for both thermal ratings and the measurement of ice and wind loads. The results of aquestionnaire on the experience of nine utilities with real‐time systems are tabulated and discussed.This includes experience with most currently available commercial systems and some customsystems. The advantages and disadvantages of each system are explained. Instruments suitable formeasuring wind speed, wind

OTD

Research

3066: Cascading Failure of Fuseless Shunt Capacitor Banks – Computer Modeling, Laboratory Testing and Remedial Action

Some utilities have experienced capacitor failures which resulted in cascading failures of other capacitors in the bank. Although the capacitors met existing standards there is suspicion the dielectric strength is not adequate when such failures occur. This report summarizes work done at the Bonneville Power Administration (BPA) to investigate the phenomena. A literature search is presented including peer reviewed publications and international standards as they relate to shunt capacitors. Compu

SE

Research

0540: Energy Storage Scoping Study

The impact of variable energy resources, such as wind and solar, on power system operations can be mitigated through the use of energy storage. The general purpose of this guide is to provide insights into the role of energy storage as currently deployed, and highlight potential applications to mitigate the impact of renewable energy integration on various levels of the power system including the transmission, distribution, behind-the-meter and remote sites. This report is an aggregate of a thor

Mar 7, 2014 - Jun 11, 2015

E&IS

Research

3227A: CPF: Methods for Improving Ground Resistance of Transmission Structures, Phase I

A low-impedance electrical connection of a transmission tower to remote earth through the local soil provides lightning protection and power system fault current management. The structure grounding can take several forms, including the tower foundation itself, supplemental vertical rods, or buried horizontal counterpoise wires. This Technology Review identifies and describes all methods currently used for improving the ground resistance of transmission line structures. A simplified equation (

OTE

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