Adaptive fault indicator

Abstract

The invention discloses an adaptive fault indicator, which comprises a sensor unit, a sampling unit, a control unit, a display unit, a fault signal output unit and a communication unit, wherein the sensor unit and the sampling unit output detection signals to a signal conditioning unit; the signal conditioning unit outputs voltage, current and grounding signals of user lines to the control unit; the control unit judges fault occurrence, type, time and storage and reset of fault information, and outputs fault signals to the display unit, the fault signal output unit and the communication unit respectively; and an action cylinder for turning the indicator is luminous at night. The adaptive fault indicator has the advantages of realizing reliable identification of grounding fault and short-circuit fault, turning the indication fault and lighting at night to indicate the fault. When communicating with a master station of a system, the adaptive fault indicator can report fault data in realtime for the master station system to intensively acquire and accurately and quickly judge the specific position of the fault, thereby implementing coordination action with an automatic fault isolation device, facilitating fault removable in time to recover power supply, improving the power supply reliability and reducing the workload of maintainers.

Description

technical field [0001] The invention relates to the technical field of power network automation, in particular to an adaptive fault indicator. Background technique [0002] In the distribution network, the structure of the wire network is complex, and the operation mode of the electrical lines or equipment is changeable. Due to the aging or damage of the cable insulation layer, or poor electrical connection, etc., the electrical lines or equipment may fail, which affects the reliability of power supply. huge impact. During line maintenance and troubleshooting, it takes time and effort for maintenance personnel to find the location of the fault and determine the nature of the fault, resulting in a heavy workload for troubleshooting and troubleshooting. In power systems, fault indicators are usually used to indicate fault lines for use by maintenance personnel. However, most of the currently used fault indicators can only indicate a single fault, and have poor adaptability f...

AI Technical Summary

Problems solved by technology

However, most of the currently used fault indicators can only indicate a single fault, and have poor adaptability for maintenance personnel to judge the nature of the fault.

The automation performance of the fault indicator is poor. Because there is no interface, it cannot be connected to the main station system of the distribution network, the fault cannot be quickly and automatically located, and it cannot coordinate with the automatic devices such as fault isolation.

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