Partial discharge (PD) measurement has been used for several decades to assess the condition of high-voltage (HV) and medium-voltage (MV) electrical apparatus. In the past, PD measurements were largely limited to the production stages of various assets (e.g., during R&D, factory-type tests, and factory acceptance tests). However, the advantages of such testing have resulted in it being used more often …
NETA Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. In our CAP Spotlight series, we look at what makes CAPs special and highlight some of their individual successes. In this issue, NETA World interviews Francis Fisher, head of …
The proven advantages of digital technology for power system protective relays are now commonplace in the power producing and delivery industry. Digital relays provide unsurpassed reliability and extended capabilities at an economical cost. However, keeping pace with the testing and commissioning requirements of these devices has proven to be a challenge for both protective relay engineers and technicians. Although testing …
NETA Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. In our CAP Spotlight series, we look at what makes CAPs special and highlight some of their individual successes. In this issue, NETA World interviews Drew Welton, intellirent’s Vice …
If you ask anyone in a plant environment who is responsible for safety, the answer will almost always be “Everyone.” If you ask the same question about reliability, however, the response is quite different. You’ll see finger pointing, uncertainty, and an alarmingly consistent response of “Someone else.” This needs to change. The answer needs to be as clear for reliability …
NETA Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. In our CAP Spotlight series, we look at what makes CAPs special and highlight some of their successes. In this issue, NETA World interviews Alex Salinas, Doble’s Director of …
Cybersecurity is one of the greatest challenges to grid reliability. As more facilities and devices become IP-routable communications-enabled, the threats multiply along with the incredible productivity gains. This additional complexity impacts the work of field testing organizations in the form of a bewildering milieu of new technologies, processes, and regulations. Without awareness of the threats and security best practices, it …
The Institute of Electrical and Electronic Engineers (IEEE) Standards Association recently approved the publication of IEEE Std. C57.161–2018, Guide for Dielectric Frequency Response Test. The work was developed within the IEEE Transformers Committee and the Dielectrics Subcommittee. The industry needed a document to better understand the field application of a non-intrusive and non-destructive method to assess the condition of oil-paper …
NETA Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. In our CAP Spotlight series, we look at what makes CAPs special and highlight some of their successes. In this issue, NETA World interviews Cody Richards, Protec’s Vice President …
DC winding resistance is a simple concept that relies on the fundamental application of Ohm’s Law. It is a powerful tool to determine continuity in power transformer winding circuits, specifically connections and tap changer contacts. However, performing a dc winding resistance test presents several technical difficulties that must be overcome: The power transformer’s magnetizing inductance must be removed through saturation …