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Related Concept Videos

Zones of Protection01:16

Zones of Protection

167
In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
Protective zones are defined by closed dashed lines, containing one or more components. A key characteristic of these zones is the strategic placement of...
167
Power System Three-Phase Short Circuits01:21

Power System Three-Phase Short Circuits

83
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...
83
Line Protection with Impedance Relays01:27

Line Protection with Impedance Relays

79
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
79
Distribution Reliability and Automation01:25

Distribution Reliability and Automation

107
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...
107
Directional Relays01:25

Directional Relays

109
Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...
109
Reclosers and Fuses01:26

Reclosers and Fuses

102
Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...
102

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Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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A Dynamic-SUGPDS Model for Faults Detection and Isolation of Underground Power Cable Based on Detection and Isolation

Sharad Chandra Rajpoot1, Chanki Pandey2, Prashant Singh Rajpoot3

  • 1Department of Electrical Engineering, Government Engineering College, Jagdalpur, Chhattisgarh India.

Journal of Electrical Engineering & Technology
|April 16, 2024
PubMed
Summary

A novel Smart Underground power Grid Protection and Detection System (SUGPDS) effectively identifies, classifies, and isolates faults in underground power cables. This smart system enhances electrical grid reliability and stability by quickly isolating faulty sections.

Keywords:
Fault detection and isolationGround faultMicro phasor measurement unit (µPMU)Open-circuit faultPhasor data concentrator (PDC)Short-circuit faultSmart sensing and switching device (SSSD)Smart underground power distribution system (SUGPDS)Underground power cable

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Area of Science:

  • Electrical Engineering
  • Power Systems Engineering
  • Smart Grid Technology

Background:

  • Underground power cables in distribution systems are prone to faults, impacting grid reliability.
  • Existing protection systems may lack the speed and precision for effective fault management.
  • The need for advanced solutions to ensure uninterrupted electricity supply is critical.

Purpose of the Study:

  • To propose and analyze a Smart Underground power Grid Protection and Detection System (SUGPDS).
  • To enhance the identification, classification, and isolation of faults in underground power distribution systems.
  • To improve the reliability, stability, and efficiency of power delivery.

Main Methods:

  • Development of a SUGPDS model incorporating a Detection and Isolation algorithm.
  • Utilization of smart sensors: micro phasor measurement units, smart sensing and switching devices, phasor data concentrators, and ZigBee technology.
  • Analysis of the SUGPDS model using a distributed parameter approach.

Main Results:

  • The SUGPDS model accurately identifies, classifies, and isolates various faults in underground power cables.
  • Phasor data concentrators are crucial for generating detection and classification reports.
  • Smart sensing and switching devices effectively isolate faulty phases, reducing power consumption.

Conclusions:

  • The proposed SUGPDS offers a quick and smart solution for managing underground power cable faults.
  • SUGPDS significantly improves the reliability and stability of distribution systems compared to conventional methods.
  • The system demonstrates super abilities in fault management, ensuring an uninterrupted flow of electricity.