# US 9,517,534 B2 · Electric installation maintenance method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,534 B2 - Document ID: US9517534B2 - Status: Granted - Kind: B2 - Application number: 13/782,291 - Filed: 2013-03-01 - Published: 2013-09-05 - Granted: 2016-12-13 - Earliest claimed: 2012-03-05 - Assignees: Schneider Electric Industries SAS - Applicants: Schneider Electric Industries SAS - Inventors: Marc Houdray; Jean-Marie Hypolite; Matthieu Guillot; Caroline Vollet; Jean-Luc Baudouin - Web page: https://patentgrep.com/patent/US9517534B2 ## CPC - B23P 6/00: Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10) - G06Q 10/06: Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling - G06Q 10/20: Administration of product repair or maintenance - G05B 23/0283: {Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] (preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06)} - Y10T 29/49718: Repairing - Y10T 29/52: Plural diverse manufacturing apparatus - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Method for performing maintenance of an electric installation including at least one electric equipment unit comprising: entry and storing in a database of data representative of an electric installation to be monitored and of data representative of electric equipment settings and parameters, storing of data representative of events in a database so as to constitute an events history, detection of malfunctioning disturbances, analysis of causes of malfunctioning of the electric installation, management of restoration of operation of a part of the installation. Management of restoration of operation comprises monitoring by a decision tree to evaluate a criticality level. ## Claims ### Claim 1 A method for performing maintenance of an electric installation comprising electric equipment, the method comprising: entering, with circuitry, data representative of an electric installation to be monitored in a database; storing, in the circuitry, data representative of electric equipment settings and parameters; storing, in the circuitry, a database of events history including data representative of events occurring in said electric installation to be monitored; storing, in the circuitry, criticality criteria used to determine a criticality level of malfunctions; detecting, with the circuitry, malfunctioning of at least one electric protection equipment in the electric installation or of the electric installation itself; analyzing, with the circuitry, causes of the malfunctioning according to data of the events history and a state of the installation; determining, with the circuitry, a criticality level of the malfunctioning based on the causes of the malfunctioning and the criticality criteria; and managing, with the circuitry, restoration of operation of a part of the installation that is out of service according to the causes of malfunctioning, a state of electric lines of the installation and the criticality level, and according to a predefined decision tree, wherein managing restoration of operation includes preventing automated restoration of operation of the part of the installation that is out of service when the criticality level of the malfunction indicates an Earth leakage or short circuit. ### Claim 2 (depends on 1) The maintenance method according to claim 1 comprising: detecting a voltage outage in a part of the electric installation, and determining a cause of said voltage outage according to events recorded in the events history. ### Claim 3 (depends on 1) The maintenance method according to claim 1 comprising: detecting electric short-circuits in an electric line, disabling closing of the electric equipment or of a power supply of said electric lines when a short-circuit is detected, and indicating disabling of the power supply of said electric lines. ### Claim 4 (depends on 1) The maintenance method according to claim 1 wherein said managing of restoration comprises: indicating events, acknowledging events having a high criticality level, and enabling power supply of an electric line after acknowledgement of events having a high criticality level. ### Claim 5 (depends on 1) The maintenance method according to claim 1 comprising: detecting causes of opening of an electric switchgear according to communication of a state thereof, local or remote controls, operating conditions, and/or an ageing computation, disabling manual or automatic reclosing of said switchgear, indicating critical causes of malfunctioning of the installation, and acknowledging an event indicating at least one fault of the electric equipment. ### Claim 6 (depends on 1) The maintenance method according to claim 1 comprising selecting malfunctions caused by electric faults and of malfunctions not caused by electric faults. ### Claim 7 (depends on 1) The maintenance method according to claim 1 comprising evaluating a criticality level by a decision tree comprising: monitoring causes of tripping of the electric equipment, monitoring external commands, monitoring the events history, and selectivity monitoring, and/or monitoring ageing data. ### Claim 8 (depends on 1) The maintenance method according to claim 1 comprising remotely controlling closing of the electric equipment or of power supply of an electric line. ### Claim 9 A maintenance device of an electric installation comprising electric equipment, the maintenance device comprising: circuitry configured to enter data representative of an electric installation to be monitored in a database, store data representative of electric equipment settings and parameters, store data representative of events occurring in said electric installation to be monitored in a database so as to constitute an events history, store criticality criteria used to determine a criticality level of malfunctions; detect malfunctioning of at least one electric protection equipment in the electric installation or of the electric installation itself, analyze causes of the malfunctioning according to data of the events history and a state of the installation, determine a criticality level of the malfunctioning based on the causes of the malfunction and the criticality criteria, and manage restoration of operation of a part of the installation that is out of service according to the causes of malfunctioning, a state of electric lines of the installation and the criticality level, according to a predefined decision tree, wherein in managing restoration of operation, the circuitry prevents automated restoration of operation of the part of the installation that is out of service when the criticality level of the malfunction indicates an Earth leakage or short circuit. ### Claim 10 (depends on 9) The maintenance device according to claim 9 wherein said circuitry is further configured to: store data representative of an electric installation to be monitored, and communicate with other devices. ### Claim 11 (depends on 9) The maintenance device according to claim 9 wherein the circuitry is further configured to detect a short-circuit in at least one line of the electric installation to be monitored. ### Claim 12 (depends on 9) The maintenance device according to claim 9 wherein the circuitry is further configured to detect a leakage current in at least one line of the electric installation to be monitored to generate signals representative of a current earth leakage, or detect an insulation fault in the at least one line of the electric installation to be monitored to generate signals representative of an insulation fault. ### Claim 13 (depends on 9) The maintenance device according to claim 9 wherein the circuitry is further configured to receive remote control of at least part of the electric equipment. ### Claim 14 An electric installation comprising: electric equipment; and circuitry configured to enter data representative of an electric installation to be monitored in a database, store data representative of electric equipment settings and parameters, store data representative of events occurring in said electric installation to be monitored in a database so as to constitute an events history, store criticality criteria used to determine a criticality level of malfunctions; detect malfunctioning of at least one electric protection equipment in the electric installation or of the electric installation itself, analyze causes of the malfunctioning according to data of the events history and a state of the installation, determine a criticality level of the malfunctioning based on the causes of the malfunction and the criticality criteria, and manage restoration of operation of a part of the installation that is out of service according to the causes of malfunctioning, a state of electric lines of the installation and the criticality level, according to a predefined decision tree, wherein in managing restoration of operation, the circuitry prevents automated restoration of operation of the part of the installation that is out of service when the criticality level of the malfunction indicates an Earth leakage or short circuit.