Voltage Regulation

Where this fits

Why power systems manage voltage within usable ranges as demand and network conditions change.

Core system ideas

Voltage varies with network impedance, reactive power, loading and equipment configuration.

Transformers, regulators, capacitors, inverters and generators can contribute to voltage control in different parts of the grid.

Control objectives must consider customer equipment, network limits and changing distributed resources.

Interfaces and tradeoffs

Distribution connects the bulk system to millions of individual loads and increasingly to distributed generation and storage. Local voltage, feeder capacity and asset condition matter as much as system-wide energy supply.

What organizations measure

Bus/feeder voltage, voltage deviations, reactive power and control-device operations.