Quantum mechanics

World Wide Web

Control (management)

Engineering

Phasor

Control engineering

Units of measurement

Telecommunications

Power (physics)

Computer science

Classical mechanics

Grid

Power dividers and directional couplers

Physics

Mathematics

Index (typography)

Electric power system

Automatic frequency control

Electrical network

Frequency response

Electronic engineering

Frequency divider

Inertia

Artificial intelligence

Geometry

Phasor measurement unit

Control theory (sociology)

Electrical engineering

IEEE Transactions on Power Systems

The first part of this two-part paper proposes a technique that consists in the measurement, through phasor measurement units, of bus frequency variations to estimate the rate of change of regulated power, and in the definition of a local index that is able to discriminate between devices that modify the frequency at the connection bus and devices that do not. A taxonomy of devices based on their ability to modify locally the frequency is proposed. A byproduct of such an index is to estimate the inertia or equivalent inertia of the monitored device. The proposed index is shown to be a relevant consequence of the concept of frequency divider formula recently published by the authors on the IEEE Transactions on Power Systems. The properties of the proposed index is illustrated through examples based on the synchronous machine and its controllers.

A Method for Evaluating Frequency Regulation in an Electrical Grid – Part I: Theory