Electrical Substations

Lightning Protection

Lightning Strikes

In Canada, lightning flashes occur about 2.34 million times a year; with the highest levels of concentration during the summer months. While most lightning on earth is ground-to-cloud, recent research has identified that the majority of lightning events to tall structures, such as wind...

Substation Technologies

Gas Dehydration

Sulfur hexafluoride (SF6) insulates medium- and high-voltage switchgears around the world. In its pure form, this non-toxic, inert gas helps the power transmission & distribution (T&D) industry operate more safely by extinguishing high-temperature arcs. With a much higher...

Substation Automation

Utilities Bank on IoT for Network Reliability Improvement to Decrease Lost Revenue

Power grids around the world are getting smarter thanks to the Internet of Things (IoT). While Smart Grid technologies are making the headlines, and poised to grow to more than $118 billion by 2019, according to November 2015 research from analyst firm Transparency Market Research—many...

Breakers & Relays

Protective Relay Frustrations

Solving misoperation with line parameter measurements BY WILL KNAPEK, OMICRON USA Between 80 to 90 percent of all power system faults involve ground. Many protective relaying schemes depend on ground distance protection to accurately sense and locate ground faults on multi-terminal sub-transmission...

Physical Security & Monitoring

Protecting Electrical Sites with Intelligent Security Lighting

There are over 70,000 electrical substations in the United States. A simultaneous attack on several of them could destabilize the grid and cause widespread blackouts. But even a non-targeted event like vandalism or copper theft can also cause substantial damages, easily reaching into the tens of...

Substation Protection

Selecting Substation Medium-Voltage Switchgear: GIS vs. AIS

Understanding differences between GIS and AIS in five points BY GAETAN DJENANE, Schneider Electric, Inc. Many considerations must be taken into account before selecting the electrical medium-voltage (MV) switchgear that best meets a user’s needs. From a management perspective,...

Home Transformation Electrical Substations

FERC Rejects PJM Transmission Planning Change

The Federal Energy Regulatory Commission (FERC) has rejected a proposal from PJM Interconnection, one of the United States' largest regional transmission organizations, to alter its transmission planning protocol. The decision represents a significant victory for state regulators who had expressed strong opposition to the changes, arguing that they would undermine states' authority in shaping the future of energy infrastructure.

The Proposed Changes

PJM’s proposal aimed to adjust its approach to regional transmission planning, focusing on...