13 results about "Arc-fault circuit interrupter" patented technology

A circuit breaker (105) for active detection of an arc fault is provided. The circuit breaker (105) includes a set of power electronics (110) configured to activate an arc fault detection, a current limiting resistor (125) in series with the set of power electronics (110) and a sensing and control circuitry (115) coupled to the set of power electronics (110) and storing in a memory for execution a detection algorithm code (135) with a detection logic (140). The sensing and control circuitry (115) monitors a load current of at least one device connected to the circuit breaker (105). The sensing and control circuitry (115) detects an arc-like signal in the load current, and by monitoring a change of the arc-like signal during a short on / off period of the set of power electronics (110), the detection algorithm code (135) determines an arc.

Arc fault protection for a digital power distribution system powering a device. The system includes an arc fault circuit interrupter ("AFCI") and a controller. The controller is connected to the AFCI. The controller is operable to control the AFCI to disable power to the device. The controller includes a processor and a memory. The controller is configured to send a digital power energy packet through the AFCI to the device, measure an error quantity associated with the digital power energy packet, evaluate the error quantity associated with the digital power energy packet, determine whether an arc fault condition exists based on the evaluation of the error quantity associated with the digital power energy packet, and control the AFCI to disable power to the device when it is determined that an arc fault condition exists.

An apparatus includes a solid state circuit breaker selectively configured as a closed switch or an open switch. A current sensor is coupled to a current path passing through the closed switch and configured to sense an electrical current flowing on the current path while the switch is closed. A student convolutional neural network (CNN) model is pretrained using a knowledge distillation-based teacher-student approach. The student CNN model is coupled to the solid state circuit breaker and the current sensor and configured to process data representative of the electrical current, the data being processed cyclically with a period defined by an arc fault detection cycle. According to some aspects, in response to the student CNN model detecting, in association with the electrical current, an arc fault lasting a predetermined number of consecutive arc fault detection cycles, the solid state circuit breaker is reconfigured as the open switch.

1. The name of the design product: arc fault circuit interrupter. 2. The use of the design product: for protecting circuit and preventing arc fault. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The invention discloses a self-checking system, a self-checking method and an arc fault circuit breaker, and relates to the technical field of electronic power, the self-checking system comprises a current transformer, a sampling unit and a control unit; a primary coil of the current transformer is connected with the DC power supply unit, a first end of a secondary coil is connected with a first end of the resistive load, and a second end is connected with a first end of the capacitive load; the second end of the resistive load is connected with the second end of the capacitive load and the control unit; the input side of the sampling unit is connected with two ends of the capacitive load, and the output side is connected with the control unit; the control unit sends a first electric signal to a secondary coil of the current transformer; the sampling unit collects a first response voltage signal of the current transformer based on the first electric signal; the control unit analyzes the first response voltage signal to determine whether the current transformer works normally. According to the invention, the manufacturing cost of an AFCI product can be reduced, and the accuracy of AFCI arcing detection is improved.

The application discloses a kind of based on deep learning's fault arc accurate detection method and system, belong to low-voltage distribution safety and electrical fire early warning technical field.The present application is aimed at the problem that fault arc is prone to occur, difficult to detect in low-voltage distribution system, and the high false detection and missed detection rate of traditional method, a high-precision, fast detection scheme of fusion current time-frequency domain feature and deep learning model is proposed.The present application quickly locates current disturbance by improving CUSUM algorithm, greatly reduces the amount of calculation;Automatic extraction current time-frequency domain joint feature, input Stacking double-layer integrated deep learning model to realize high-precision fault classification;Combined with double exponential arc model to expand samples, improve generalization ability.The detection accuracy of the present application reaches 99.06%, and the detection time is only 10% of the traditional method, can effectively identify series, parallel, ground fault arc, adapt to residential, commercial, industrial and other complex multi-load scenarios, and support multi-branch line fault positioning, with high precision, low delay, strong robustness, easy deployment and other advantages, can be widely used in arc fault circuit interrupter, electrical fire monitoring system, to prevent electrical fire from the source.

An electrical fault detection and interruption device includes a switch module coupled between input and output ends of current carrying lines, a GFCI (ground fault circuit interrupter) fault detection module for generating a ground fault signal when detecting a leakage current on the current carrying lines, an AFCI (arc fault circuit interrupter) fault detection module for generating an arc fault signal when detecting harmful arcs on the current carrying lines, a drive module for driving the switch module to disconnect the electrical connection between the input and output ends in response to the ground fault signal and / or arc fault signal, a fault signal transfer module for generate a simulated leakage current signal in response to the arc fault signal, and a monitoring module for generating a harmful arc signal to test whether the electrical fault detection and interruption device is functioning normally.

The present disclosure relates to systems and methods for creating a training dataset for an artificial intelligence based arc fault circuit interrupter. According to various embodiments, a method for creating a training dataset for an artificial intelligence based arc fault circuit interrupter is provided. In some embodiments, the method includes: collecting a number of non-arc data frames; calculating a spectral magnitude for each non-arc data frame and summing the spectral magnitudes; calculating a mean of the sum of spectral magnitudes for the non-arc data; collecting a number of arc data frames; calculating a spectral magnitude for each arc data frame and summing the spectral magnitudes; for each arc data frame, comparing the sum of spectral magnitudes to a threshold based on the mean of the sum of spectral magnitudes for the non-arc data; and adding each arc data frame for which the sum of spectral magnitudes exceeds the threshold to an AI data model training dataset.

A circuit breaker for active detection of an arc fault is provided. It comprises a set of power electronics configured to make an arc fault detection active, a current limiting resistor in series with the set of power electronics and a sensing and control circuitry coupled to the set of power electronics and stores in a memory for execution a detection algorithm code with a detection logic. The sensing and control circuitry monitors a load current of at least one device connected to the circuit breaker, the sensing and control circuitry detects an arc-like signal in the load current, and by monitoring a change of the arc-like signal during a short on / off period of power electronics, the detection algorithm code can determine if there is an arc in the circuit.

The utility model discloses a kind of coil tripping subassembly of leakage protector's assembly equipment.The assembly equipment includes: fixture, it has the positioning slot for accommodating the mounting seat;Feeding mechanism, for the mounting seat is placed in the positioning slot;Spring assembly mechanism, for the spring is placed into the mounting seat on the fixture;Iron core assembly mechanism, for the iron core is inserted into the mounting seat on the fixture;Sliding sheet assembly mechanism, for the sliding sheet is placed to the mounting seat on the fixture;Conveying table, movably set on rack;Wherein, the feeding mechanism, the spring mounting mechanism, the iron core assembly mechanism and the sliding sheet assembly mechanism are sequentially arranged along the movement direction of the conveying table, the fixture is set on the conveying table, to drive the fixture sequentially through the conveying table through the feeding mechanism, the spring mounting mechanism, the iron core assembly mechanism and the sliding sheet assembly mechanism.

An arc fault protective wiring device disposed in an electrical distribution system is disclosed, the device including a pulse frequency digitizer, the pulse frequency digitizer being configured to receive a plurality of pulses, each pulse being representative of an instance that the derivative of the current through a neutral conductor exceeds a first predetermined threshold, the pulse frequency digitizer further being configured to produce a digital signal, the digital signal being representative of the instances at which a frequency of the plurality of pulses exceeds a predetermined threshold; and at least one processor configured to trigger a trip mechanism to electrically decouple a line terminal from a load terminal based, at least in part, on the digital signal.

A portion of a distribution board may include an arc fault circuit interruption (AFCI) protection system configured to detect an arc fault event occurring in a branch circuit, and interrupt power flow in one or more of the branch circuits, wherein an interrupt switching device of the AFCI protection system is electrically coupled between (a) one or more bus bars of the distribution board and (b) branch circuit terminals of the distribution board. The portion of the distribution board may also include an interface panel that enables a user to interact with the AFCI protection system.

The invention discloses an abnormity positioning system, an abnormal point position determination method and an arc fault circuit breaker, and relates to the technical field of electronic power, the abnormity positioning system comprises a power supply unit, a current transformer, a sampling unit and a control unit; the power supply unit is used for supplying power to the control unit after the abnormality positioning system cuts off the power supply of the direct current side equipment; the control unit is used for sending a pulse signal to a secondary coil of the current transformer based on the arc noise information; the sampling unit is used for collecting a response voltage signal induced by the current transformer based on a reflection signal of an abnormal point, and the reflection signal is generated by reflection at the abnormal point when a detection voltage signal induced by the current transformer based on a pulse signal is propagated along the direct current side equipment; and the control unit is also used for determining the position information of the abnormal point according to the pulse signal and the response voltage signal. Abnormal point positioning can be carried out after the arc information is identified, the operation and maintenance efficiency is improved, and the power generation loss is reduced.