IEEE C37.118.1-2011
IEEE Standard for Synchrophasor Measurements for Power Systems
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About This Item
IEEE C37.118.1-2011 is a technical standard for synchrophasor measurements in power systems, defining the measurement requirements and performance expectations used to evaluate phasor measurement equipment. It is relevant to power, energy and industrial applications where synchronized electrical measurements support monitoring and analysis of grid behavior. By setting a common basis for measurement quality and consistency, IEEE C37.118.1-2011 helps engineers compare devices and apply synchrophasor data more reliably.
IEEE C37.118.1-2011 overview
This standard addresses the measurement side of synchrophasor technology, with attention to how electrical quantities are captured, reported, and assessed in power-system environments. IEEE C37.118.1-2011 is commonly used alongside engineering practices that depend on accurate time-aligned data for analyzing voltage and current behavior. Its technical context is especially important for equipment and systems that must provide repeatable, comparable measurements under defined operating conditions.
Typical use cases
Typical use includes specifying or checking synchrophasor measurement performance in phasor measurement units, grid monitoring systems, and related power-system instrumentation. It may also support utility engineering workflows where synchronized data is used for disturbance analysis, system visibility, and operational assessment. In procurement or test planning, IEEE C37.118.1-2011 can help define how measurement devices should behave and what acceptance criteria are appropriate for synchronized power-network applications.
Why this standard matters
This standard matters because synchrophasor measurements are only useful when they are consistent, time-aligned, and well understood across devices and installations. IEEE C37.118.1-2011 supports design control, testing, and compliance by giving stakeholders a shared measurement reference for power-system applications. That can reduce integration risk, improve comparability between products, and make it easier to evaluate whether equipment performance is suitable for monitoring and analysis tasks in demanding electrical environments.
- Synchrophasor measurement requirements
- Power-system monitoring context
- Performance and comparison criteria
- Testing and compliance reference
- Publication Date: 2011
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
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