Posts by Engineer10

MAS based distributed automatic gener...

MAS based distributed automatic generation control for cyber-physical microgrid system

The microgrid is a typical cyber-physical microgrid system (CPMS). The physical unconventional distributed generators (DGs) are intermittent and inverter-interfaced which makes them very different to control. The cyber components, such as the embedded computer and communication network, are equipped with DGs, to process and transmit the necessary information for the controllers. In order to ensure […]

GIC in Future Large-Scale Power Grids...

GIC in Future Large-Scale Power Grids: An analysis of the problem.

The power grid is the spine of the energy revolution and social progress. With microgrid technology gradually coming into maturity and offshore wind power continuously developing, the development of the future power grid will be the result of the combination of an ultralarge-scale backbone grid and distributed microgrids. Microgrids will be the power supplies for […]

Real-Time Management of Geomagnetic D...

Real-Time Management of Geomagnetic Disturbances: Hydro One’s eXtreme Space Weather control room tools.

Dusty records of Ontario Hydro?s activities in the study of geomagnetically induced currents (GICs) and their effects on the power system go as far back as the late 1970s. In the early 1980s, a network of four GIC monitors was in place long before the notorious March 1989 geomagnetic disturbance (GMD) event that caused the […]

Mitigating Geomagnetic Disturbances: ...

Mitigating Geomagnetic Disturbances: A summary of Dominion Virginia Power’s efforts.

The Sun, the only star in our solar system, is an essential energy source for all human activities as well as the entire Earth biosphere. Galileo discovered the existence of sunspots in 1610, and 200 years later, Schwabe proved that our home star?s activities follow a cycle of 11 years. Using high-tech devices, scientists and […]

Geomagnetic Disturbance: A comprehens...

Geomagnetic Disturbance: A comprehensive approach by American Electric Power to address the impacts.

American Electric Power (AEP), one of the largest electric utilities in the United States, operates the nation?s largest electricity transmission system with a nearly 40,000-mi network in 11 states, connecting more than 5,000 substations, among which more than 800 are 138 kV and above. Per the recently approved North American Electric Reliability Corporation (NERC) geomagnetic […]

Modeling and Analysis of GMD Effects ...

Modeling and Analysis of GMD Effects on Power Systems: An overview of the impact on large-scale power systems.

Geomagnetically induced currents (GICs), caused by geomagnetic disturbances (GMDs) (Figure 1), have the potential to affect the operation of interconnected electric power systems. There are two key risks associated with GICs in the bulk electric system. The first is the potential for physical damage to transmission system devices such as high-voltage (HV) transformers. The second […]

Impact of GICs on Power Transformers:...

Impact of GICs on Power Transformers: Overheating is not the real issue.

There has been some misconception in the electric power industry that geomagnetically induced currents (GICs) can cause significant overheating damage to the majority of medium and large power transformers. Because of the nature of GICs, the majority of power transformers would not experience damaging overheating because of them. This article presents the real issue with […]

Geomagnetic Effects on Power Systems ...

Geomagnetic Effects on Power Systems [Technology Leaders]

In April 1940, power systems in parts of the United States and Canada experienced problems that coincided with disturbances in the Earth’s magnetic field that were traced back to activity on the sun a few days earlier. Since then, this solar connection to power systems has both fascinated and frustrated power system engineers trying to […]

Statement of Energy Subcommittee Chai...

Statement of Energy Subcommittee Chairman Randy Weber (R-Texas) – Subcommittee on Energy and Subcommittee on Research and Technology Hearing: Cybersecurity for Power Systems

“… utilities face significant threats to the reliability of power delivery. Our electric grid is particularly vulnerable to growing cybersecurity threats as the grid is modernized, as distributed energy, electric vehicles, and modernized digital operating systems create more access points for cyber-attacks.” from Statement of Energy Subcommittee Chairman Randy Weber (R-Texas) Subcommittee on Energy and Subcommittee […]

Statement of Chairman Lamar Smith (R-...

Statement of Chairman Lamar Smith (R-Texas) – Subcommittee on Energy and Subcommittee on Research and Technology Hearing: Cybersecurity for Power Systems

“However, the threat to America’s power supply from these attacks increases every day. As we will hear from one of today’s witnesses, a compromised electric grid is not a question of “if” but “when.” As cyber attackers become more sophisticated, it becomes more difficult for those who are vulnerable to protect themselves. Electric utilities must […]