Title: Battery Testing by the Standards and Field Experiences

9:30AM - 10:15AM
Presenter: Daniel CarreƱo-Perez and Volney Naranjo, Megger

Abstract - Batteries are the heart of electrical substations and telecommunications infrastructure; if DC power is lost, the substation is left unprotected and in the case of telecommunications, valuable data is jeopardized. However, despite existing regulations and standards, battery systems are not always maintained and tested as per their importance.

IEEE, NETA, and NERC provide guidelines on what, when, who, and how batteries should be tested. Publications from those entities contain information that is essential when developing a maintenance program and when performing a battery test in the field.

Maintenance and testing practices are defined by several factors, such as electrolyte, construction characteristics, and application; it is really important to take into account both the similarities and key differences for maintenance and test procedures between different battery types.

This paper will summarize and highlight the most important aspects of battery field testing in a simple and easy to follow document for three different type of batteries (VLA, VRLA and Vented NiCad). The reader will be provided with quick reference tables derived from IEEE and NETA recommendations along with a comparison to the current mandatory testing requirements from NERC.

In the end, the reader will be able to determine what should be included in a battery maintenance program, the schedule, types of tests required, and specific procedures. The authors will also discuss best practices and field recommendations, based on their experiences, for capacity and ohmic testing.


Title: Station Battery Maintenance 101: What You Need to Know

10:30AM - 11:15AM
Presenter: Tom Sandri, Shermco Industries

Abstract - There are various philosophies and opinions for maintaining and testing battery systems. These approaches can range from the “Do nothing and replace when the battery fails” to the “Intense time-based battery maintenance regiment.” Obviously the “Do nothing” approach appears a little flawed. Keep in mind that a battery is a perishable item with a shelf life. Since batteries are perishable items, there are several things necessary for them to perform to expectations. Besides being perishable, another unique feature of a battery that is unlike other electrical assets is that a battery uses chemicals, metal alloys, plastics, welds, and bonds that must interact with each other to produce a constant DC source. For this reason the type of battery should be considered before embarking on a battery maintenance program. There are a number of recommended practices for battery testing. This paper will explore accepted maintenance practices and provide the foundation to implement a winning battery maintenance program.


Title: NERC Requirements for Battery Acceptance and Maintenance Testing

11:30AM - 12:15PM
Presenter: Steve Canale, American Electrical Testing Co., Inc.

Abstract - DC Systems are a critical component of electric utility substations and generation plants. Failure of any component within the DC System during a power disturbance can result in loss of power to utility customers, substation equipment damage, and possible injury to on-site personnel. These DC systems must be tested, maintained, and inspected at defined intervals to help assure that they will be available to provide power in the event of a station service disturbance.

The North American Electric Reliability Corporation (NERC) has published specific ‘minimum’ requirements regarding testing, maintenance, inspection, and associated documentation of substation batteries. These requirements are detailed in NERC PRC-005.

In this paper we will discuss the importance of maintaining reliable substation DC systems. We will also outline the requirements that NERC has imposed and how these requirements differ from the IEEE, NFPA, and NETA standards that are typically referenced. Finally, we will discuss the requirements for properly documenting the test, maintenance, and inspection results.

Here is Ron Widup, Conference Chair,
with PowerTest 2017 details!