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1110-2019 - IEEE Guide for Synchronous Generator Modeling Practices and Parameter Verification with Applications in Power System Stability Analyses
2020 Edition, March 2, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Categorized in this guide are three direct-axis and four quadrature-axis models, along with the basic transient reactance model. Also discussed are some of the assumptions made in using various models. The fundamental equations and concepts involved in generator/system...

ASTM D7407-07(2020) - Standard Guide for Determining the Transmission of Gases Through Geomembranes
May 1, 2020 - ASTM International

This guide discusses the relevancy of applicable test methods, including the materials and conditions involved, in obtaining the vapor transmission in geomembranes. This guide does not purport to critique barrier system permeability, nor does it address transmission...

DOE Report Addresses Fixes to Puerto Rico's Electric Grid
June 20, 2018 - IEEE GlobalSpec

The U.S. Department of Energy released a 60-page report that offers recommendations for hardening Puerto Rico's electric power grid, which was largely destroyed when Hurricane Maria hit the island in September 2017. The report says that the U.S. territory's energy infrastructure must be...

ASTM F901-20 - Standard Specification for Aluminum Transmission Tower Bolts and Nuts
May 1, 2020 - ASTM International

1.1 This specification covers aluminum structural bolts and nuts for use in the construction of aluminum transmission towers, substations, and similar aluminum structures. 1.2 Diameters of bolts and nuts furnished to this specification are 5/8 , 3/4 , and 7/8 in. 1.3 The values...

1863-2019 - IEEE Guide for Overhead AC Transmission Line Design
2020 Edition, May 11, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Methods for designing 110 kV to 1000 kV ac overhead transmission lines are provided and may also be used as reference for the design of lower voltage overhead transmission lines. The principles and procedures for designing weather-resistant conductor,...

ASTM F2944-20 - Standard Practice for Automated Colony Forming Unit (CFU) Assays—Image Acquisition and Analysis Method for Enumerating and Characterizing Cells and Colonies in Culture
April 1, 2020 - ASTM International

4.1 The Manual Observer-Dependent Assay-The manual quantification of cell and CFU cultures based on observer-dependent criteria or judgment is an extremely tedious and time-consuming task and is significantly impacted by user bias. In order to maintain consistency in data acquisition,...

ASTM D814-95(2020) - Standard Test Method for Rubber Property—Vapor Transmission of Volatile Liquids
February 1, 2020 - ASTM International

3.1 The rate of transmission of a liquid through a rubber sheet, that acts as a barrier, is important in rubber diaphragm performance and other similar industrial applications. This transmission is referred to as vapor transmission since the liquid diffuses through the...

P1110/D07, Jul 2019 - IEEE Draft Guide for Synchronous Generator Modeling Practices and Parameter Verification with Applications in Power System Stability Analyses
2019 Edition, July 23, 2019 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Categorized in this guide are three direct-axis and four quadrature-axis models, along with the basic transient reactance model. Also discussed are some of the assumptions made in using various models. The fundamental equations and concepts involved in generator/system...

ASTM E398-20 - Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement
June 1, 2020 - ASTM International

1.1 This test method covers dynamic evaluation of the rate of transfer of water vapor through a flexible barrier material and allows conversion to the generally recognized units of water vapor transmission (WVT) as obtained by various other test methods including the...

P2821/D5, Jun 2020 - IEEE Draft Guide for Unmanned Aerial Vehicle-based Patrol Inspection System for Transmission Lines
2020 Edition, June 8, 2020 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The UAV-based patrol inspection systems applied in operation and maintenance of transmission lines are demonstrated in this document. The system compositions, application scenarios, functions and performance, test methods, and guidance for field applications are provided...

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