Webinars are an effective and convenient way to provide valuable training to cooperative employees.
2021 ENGINEERING AND OPERATIONS WEBINAR SERIES
This webinar series includes eight webinars intended for engineering and operations staff. Each webinar is a 90-minute presentation, including a brief question-and-answer period. Each webinar will be recorded.
Fundamentals of Guys and Anchors for Overhead Distribution Lines
When a pole is unable to support wind loading and conductor tension, guys and anchors are required. This webinar focuses on understanding the forces to be supported by guys and anchors. Further, strength rating of the guy and anchor assemblies are required with emphasis on National Electrical Safety Code (NESC) requirements. The effect of guys on the strength of assembly will be addressed.
National Electrical Safety Code (NESC) Clearances from Buildings
Many accidental contacts occur near buildings. This webinar addresses the clearances required by 2017 NESC Table 234-1 when passing by a building, but not attached to the building. This presentation provides a working understanding of the clearances required over or beside buildings and other structures.
NESC Grounding Requirements
The NESC provides methods and requirements for grounding distribution systems. Proper grounding is an important component of safety for line workers and the public. This webinar addresses the safety goals and describes approved methods for effectively grounding the system neutral and other non-current carrying equipment. Different types of grounding electrodes are covered, which provide options for achieving a well-grounded system. The rules for grounding guys and insulating guys are also addressed,
including secondary guys and span guys. Equipment to be grounded, along with common methods used by utilities, will be addressed.
Connecting Residential Solar and Batteries to the Grid
More roof top solar and commercial solar are being installed by consumers to defray their energy bills. Batteries such as the Tesla Powerwalls are gaining in popularity. The webinar presentation provides a detailed review and application of IEEE Standard 1547 for interconnection of inverter-based systems including solar
and batteries. The presentation will focus on residential scale interconnection.
NESC Clearances on Poles
Separation and spacing requirements for conductors on the pole are provided throughout the NESC. Often this spacing is reflected in the construction specifications. This webinar will explore the spacing requirements and how those requirements affect the design. In addition, the webinar will address the requirements of the NESC as it relates to safe clearances for communication workers and supply utility workers.
Application and Coordination of Overhead Fuses
Fuses are the most common overcurrent devices used on overhead power systems. This webinar presentation will address the characteristics and application limitations of expulsion fuses. The concept of fuse savings and the coordination requirements for upstream reclosers will be explained. Methods used for sizing fuses to protect overhead taps will be explored. In addition, the webinar will discuss coordination methods used to coordinate multiple fuses in services.
Methods for Improving Reliability
Reliability, expressed as SAIDI, SAIFI and CAIDI, is used to help compare the reliability of a system from year to year as well as comparison to other utilities. The webinar will explain the indices (SAIDI, SAIFI and CAIDI), and the use of outage data to develop actionable methods for improving reliability. Methods for improving reliability, using several case studies, will be discussed.
Motor Starting and Mitigation of Power Quality Issues
Mitigation of power quality issues, due to motor starting on the power system, can be one of the most difficult challenges faced by electric utility personnel. This presentation discusses how to prepare a motor starting analysis for various types of motor
starters. The impact of the various motor starters on the starting current and starting torque will be discussed, along with mitigation techniques.