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Related Concept Videos

Power System Distribution01:25

Power System Distribution

312
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
312
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

148
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
148
Primary Distribution01:28

Primary Distribution

148
Primary distribution systems deliver electrical power from substations to consumers through various voltage classes, with 15-kV class voltages being predominant among U.S. utilities. Older 2.5- and 5-kV classes are being replaced by 15-kV primaries, while higher 25- to 34.5-kV classes are used in high-density urban areas and rural regions with long feeders. Three-phase, four-wire multigrounded systems are widely employed for balanced power delivery, using the neutral wire as a grounding point.
148
Distribution Reliability and Automation01:25

Distribution Reliability and Automation

153
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
153
Power Distribution in Three-phase and Single Phase Circuits01:17

Power Distribution in Three-phase and Single Phase Circuits

401
Power distribution within electrical circuits is a foundational aspect of residential and industrial energy systems. While single-phase power is common in residential settings, three-phase power is the standard for industrial environments with heavy machinery. Each system is different and has advantages, and it's crucial to understand the underlying principles of power distribution and material efficiency.
Single-Phase Power Distribution:
Single-phase circuits are typical in household...
401
Secondary Distribution01:25

Secondary Distribution

130
Secondary distribution systems provide electrical energy at the utilization voltage levels from distribution transformers to customer meters. Typical secondary voltages in the United States include 120/240 V for residential use, 208Y/120 V for residential and commercial use, and 480Y/277 V for industrial and high-rise commercial use.
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
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Updated: Sep 9, 2025

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A Staged Event Source Location Identification Scheme in Power Distribution Networks Under Extremely Low

Xi Zhang1, Jianyong Zheng1,2, Fei Mei3

  • 1School of Cyber Science and Engineering, Southeast University, Nanjing 211189, China.

Sensors (Basel, Switzerland)
|August 28, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a novel staged event source location identification (ESLI) scheme using voltage measurement deviation (VMD) for power distribution networks (PDNs). The method achieves precise fault location and current calculation even with minimal sensor deployment.

Keywords:
event source location identificationstaged localization schemesynchrophasor measurementvirtual event current injectionvoltage measurement deviation

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Area of Science:

  • Electrical Engineering
  • Power Systems Analysis

Background:

  • Synchrophasor measurement technologies offer enhanced visibility in power distribution networks (PDNs).
  • High costs of measurement devices limit system observability and event source location identification (ESLI) accuracy.
  • Existing ESLI methods face challenges under low-observability conditions.

Purpose of the Study:

  • To propose a cost-effective staged ESLI scheme for PDNs with extremely low observability.
  • To achieve high-precision ESLI and event current calculations with minimal measurement devices.
  • To develop a voltage measurement deviation (VMD)-based algorithm for accurate event source localization.

Main Methods:

  • A staged ESLI scheme based on voltage measurement deviation (VMD) is proposed.
  • An ESLI model using virtual event current injection (VCI) is constructed to derive terminal bus voltage and outgoing current.
  • A VMD-based staged ESLI algorithm is developed for ordered and accurate event source searching.

Main Results:

  • The proposed VMD-based staged ESLI scheme achieves high-precision ESLI and event current solving.
  • The method demonstrates effectiveness under extremely low-observability conditions.
  • Experimental results on the IEEE 33-bus test system show significant performance improvement over state-of-the-art methods.

Conclusions:

  • The developed VMD-based staged ESLI algorithm provides a highly accurate and cost-effective solution for event source location identification in PDNs.
  • The scheme is particularly effective in scenarios with limited sensor deployment.
  • This approach significantly enhances the capabilities of PDNs in managing and responding to events.