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Devices, systems and methods to monitor and report wiring status for zone selective interlocking cables

A power distribution system, interlocking technology, applied in circuit devices, emergency protection circuit devices, information technology support systems, etc., can solve problems such as reducing the performance of power distribution systems

Pending Publication Date: 2021-12-14
EATON INTELLIGENT POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, releases in areas other than short circuits or ground faults may be affected unnecessarily, or for a longer period of time than warranted by a broken or loose wire in the cable in the ZSI arrangement, thereby degrading the performance of the power distribution system

Method used

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  • Devices, systems and methods to monitor and report wiring status for zone selective interlocking cables
  • Devices, systems and methods to monitor and report wiring status for zone selective interlocking cables
  • Devices, systems and methods to monitor and report wiring status for zone selective interlocking cables

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Embodiment Construction

[0023] Various embodiments will be described more fully hereinafter with reference to the accompanying drawings. Other embodiments may take many different forms and should not be construed as limited to the embodiments set forth herein. Like numbers refer to like elements throughout.

[0024] In the drawings, the relative sizes of regions or features may be exaggerated for clarity. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey to those skilled in the art. scope of the invention.

[0025] The distribution system can use a Zone Selective Interlock (ZSI) wiring scheme, which utilizes ZSI cables. The circuit breakers and their associated trip units can communicate with each other so that the circuit breaker closest to the fault can clear the short circuit or ground fault ...

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Abstract

Various embodiments of the present invention are directed to a first trip unit that is configured to be coupled to a power distribution system arranged in a Zone Selective Interlocking (ZSI) arrangement. The first trip unit includes an Input / Output circuit including a ZSI input terminal and a ZSI output terminal, a heartbeat signaling module configured to transmit a second signal to a second trip unit in a lower-level zone than the first trip unit, responsive to the normal condition, a first monitoring module configured to monitor a first signal received by the first trip from a third trip unit in a higher-level zone, responsive to the normal condition, and a second monitoring module configured to detect the fault condition. Related systems, devices, and methods are also described.

Description

technical field [0001] Various embodiments described herein relate to devices, systems, and methods for power distribution systems, and more particularly to monitoring and reporting line status of zone-selective interlocking cables. Background technique [0002] Zone Selective Interlocking (ZSI), also known as Zone Interlocking or Zone Inhibiting, is a communication scheme used eg with trip units or protective relays to enhance protection in electrical distribution systems during short circuit or ground fault conditions. Enhanced protection can be achieved through communication between trip units or protective relays across different zones. The release trips the circuit breaker to prevent overcurrent during short circuit or ground fault conditions. However, releases in areas other than short circuits or ground faults may be affected unnecessarily, or for a longer period of time than warranted by a broken or loose wire in the cable in the ZSI arrangement, Thereby degrading ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26G01R31/08G01R31/52G01R31/54H02H1/00H02H7/30
CPCH02H7/262G01R31/54G01R31/086H02H1/0007G01R31/52H02H1/0084G01R31/08H02H7/30H02H7/268Y04S10/52
Inventor 高智D·A·霍斯科R·P·什瓦奇J·L·拉格雷P·R·拉库斯R·D·哈策尔
Owner EATON INTELLIGENT POWER LTD