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4903results about "Switchgear" patented technology
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Substation intelligent robot inspection system and inspection method
ActiveCN102280826AInspection path optimizationIn place detection time is fastCircuit arrangementsSustainable buildingsSmart substationTransformer
The invention discloses an intelligent robot inspection system and an intelligent robot inspection method for transformer station. The intelligent robot inspection system comprises a monitoring centre, which is connected to at least one station robot intelligent inspection system of a transformer station, and each station robot intelligent inspection system comprises at least one base station. At the same time, the transformer station is also provided with an environment acquisition subsystem inside and fixed point monitoring subsystems disposed at devices needed to be monitored in the transformer station. The intelligent inspection robot is provided with an intelligent inspection robot lower computer connected to a detection unit, the detection unit includes an infrared detection unit and an ultraviolet detection unit, and the ultraviolet detection unit includes an ultraviolet video server and an ultraviolet detection device. The intelligent robot inspection system and the intelligent robot inspection method have the advantages of optimized inspection path, excellent safety protection, high intelligent degree, all-time fault detection and seamless video monitor, thus providing brand new technology detection means and all-round safety guarantee for an intelligent transformer station.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Apparatus and method for remotely moving a circuit breaker into or from a circuit breaker cell housing
A racking apparatus 10 is provided for remotely inserting into and removing an industrial electric circuit breaker from a cell housing. The racking apparatus includes a housing having a base 12 and a frame 14 extending upwardly from the base. A Wheel structure 20, 22, 24 is coupled to the base to permit wheeled movement of the housing. A motor mount structure 32 is coupled to the frame for generally vertical movement toward and away from the base. An electric motor 34 is mounted to the motor mount structure. The motor has a shaft 35 and an adaptor structure 36 is operatively associated with the shaft. The adaptor structure is constructed and arranged to be coupled to a circuit breaker. Actuating structure 40 is associated with the motor mount structure to cause the generally vertical movement of the motor mount structure. A controller 56 is carried by the housing for controlling the motor and the actuating structure. A control station 62 is operatively associated with the controller to operate the controller at a location remote from the apparatus.
Owner:SIEMENS IND INC
Robot used for intelligent substation patrol
ActiveCN101604825AEffective protectionSmall space volumeArmsSwitchgearInformation processingRotational degrees of freedom
The invention discloses a robot used for intelligent substation patrol, comprising a moving car as a vehicle; the front part of the moving car is provided with a navigation system; the moving car is provided with a power supply, an electronic element enclosure, a mechanical arm and an information processing system; wherein, the mechanical arm is arranged on a cabin on the upper part of the enclosure and is mainly composed of a basic arm, a median arm and a forearm; the basic arm has two degrees of freedom including axial movement and circumferential rotation and has a cavity inside; the median arm has a moving pin shaft which can operate along the cavity so as to ensure that a body shrinks into the cavity and has one rotational degree of freedom around the moving pin shaft when extending out of the cavity; the forearm is arranged at the end of the median arm via a pin shaft; the cross section of the cavity is larger than the cross sections of the median arm and the forearm under folding state. The robot based on the technical proposal of the invention has high degree of functionalization and high safety.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Patrol-robot-based comprehensive parameter detection system and method for substations
InactiveCN103235562AHumanized and intelligent operationTransmission systemsTotal factory controlMobile stationPower substation
The invention discloses a patrol-robot-based comprehensive parameter detection system for substations. The system is characterized by comprising a base station system area and at least one mobile station system area. The base station system area is connected with the mobile station system areas by wireless communication. The invention further discloses an inspection method using a patrol robot. The system is capable of detecting comprehensive substation parameters. The patrol robot is capable of effectively communicating with a control center at any inspection site and communicating with the control center to receive commands and return information. The inspection method is quite humane and intelligent to operate, and the patrol robot is capable of undertaking various emergent inspection tasks.
Owner:江苏正辉太阳能电力有限公司
Intelligent maintenance system and method based on wearable augmented reality display terminal and cloud platform
InactiveCN108879440ARealize remote assistanceImprove predictive abilityCircuit arrangementsSustainable buildingsSimulationPower grid
The invention discloses an intelligent maintenance system and method based on a wearable augmented reality display terminal and a cloud platform. According to the intelligent maintenance system and method, an augmented reality technology-based infrared image intelligent identification, video collection and uploading of personnel operation scenarios and real-time conversation with a monitoring center on the scene are achieved, thereby guiding maintenance personnel to implement standard and normalized work process; an intelligent maintenance platform based on big data and artificial intelligenceis built to carry out inspection optimization, defect identification and fault diagnosis; and auxiliary information is transmitted to an intelligent terminal of site operation personnel to display inreal time through an augmented reality technology, so that the operation efficiency is improved, misoperation is avoided and the intelligent maintenance system and method can be applied to multiple power grid operation and maintenance scenarios.
Owner:JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
Transformer substation inspection robot system for detecting equipment in box and method thereof
ActiveCN105415380ARealize the operationEasy to detectIndividual entry/exit registersManipulatorMicrocontrollerMicrocomputer
The invention discloses a transformer substation inspection robot system for detecting equipment in a box and a method thereof. The transformer substation inspection robot system comprises a robot and an automatic unlocking system installed outside the box. The automatic unlocking system comprises an electromagnetic lock and a control device. The control device comprises a single-chip microcomputer, a wireless communication module, an electromagnetic relay, a door-closing limiting switch and an alarm module. The automatic unlocking system is installed on a box door. The control device is installed in a lock body. The electromagnetic lock can be remotely controlled to be opened or closed by the robot and can also be manually opened or closed through a key. Through communication with the automatic unlocking system, the box lock can be automatically opened, and therefore detection and operation of the equipment in the box can be realized; the automatic unlocking system is compatible with a common key unlocking mode, and therefore an automatic robot inspection mode and a traditional manual inspection mode can coexist; a robot pan-tilt is provided with a lifting mechanism, and therefore the range of the equipment capable of being detected by the robot is greatly expanded.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Transformer substation inspection robot global path planning method based on magnetic navigation
ActiveCN102420392AReduce waiting timeIn place detection time is fastEnergy efficient ICTSensing record carriersTransformerPoint sequence
The invention relates to a transformer substation inspection robot global path planning method based on magnetic navigation. The method comprises the steps of: modeling an environment of a transformer substation to form a topology network graph and a connecting relationship matrix; determining a searching path matrix, namely the shortest path matrix, by using a Floyd algorithm, and increasing the computing speed by iterative optimization; computing the shortest connecting path between an initial point and a target point sequence by transversing nodes and edges; converting the shortest connecting path into a travel path indicated by an RFID (radio frequency identification device) sequence; and computing the rotating angle of a robot at each RFID at an intersection according to the connectivity of the path. The transformer substation inspection robot adopting the transformer substation inspection robot global path planning method provided by the invention is short in travel path, and rapid to be in place for detection, therefore, the energy of batteries is saved, and simultaneously the time for moving the robot equipment for verification after the operation of the transformer substation equipment can be effectively saved.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Pattern recognition method of substation switch based on infrared detection
ActiveCN102289676AImprove match stabilityImprove noise immunityCircuit arrangementsCharacter and pattern recognitionPattern recognitionSmart substation
The invention discloses a method for identifying the mode of a switch of a substation based on infrared detection. The method comprises the following steps of: 1, inputting an image to be identified, acquiring a switch area of the image by image registration, and sequentially graying, binarizing and thinning the switch area; 2, linearly detecting the image of the thinned switch area by using a Hough transformation algorithm; and 3, determining a detection result, and identifying the state of the switch by using a switch state determination condition. An H matrix between two images is obtainedby matching of the features of scale invariant feature transform (SIFT), the switch area in the image is found, and then the state of the switch is identified. Experiments show that: by the method, the problem of identification of a power switch can be effectively solved; an important significance is provided for automatic monitoring of the power equipment of an intelligent substation; the burdens on an inspector of the substation can be reduced; and detection efficiency is greatly improved.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Video-monitoring-based transformer substation tour-inspection intelligent-scheduling and control system
ActiveCN103699075ARealize intelligent schedulingRealize intelligent controlClosed circuit television systemsProgramme total factory controlVideo monitoringControl system
The invention discloses a video-monitoring-based transformer substation tour-inspection intelligent-scheduling and control system, which comprises a tour-inspection configuration management module, a tour-inspection task scheduling module, a tour-inspection intelligent-control module and a tour-inspection result display module, wherein the tour-inspection configuration management module is used for generating tour-inspection schemes, tour-inspection tasks associated with the tour-inspection schemes and tour-inspection control strategies by configuration data; the tour-inspection task scheduling module can be used for manually or automatically scheduling the tour-inspection tasks; the tour-inspection intelligent-control module is used for intelligently controlling a tour-inspection process; the tour-inspection result display module is used for displaying tour-inspection results in diversified forms of list, statistics, report forms and the like. According to the system, a complete set of flow scheme with intelligent scheduling and control functions is formed by video tour-inspection route setting, task scheduling, control linkage and the tour-inspection results, and report forms and reports can be automatically generated, so that the working efficiency, accuracy and timeliness are improved; the system is used for the video-monitoring remote intelligent tour-inspection of a transformer substation.
Owner:STATE GRID CORP OF CHINA +2
Electric power system control system with selective enclosure
InactiveUS20100201230A1Substation/switching arrangement detailsMachine supportsControl systemElectric power system
An enclosure for electric power system control, monitoring, protection, and automation access devices, which includes a selective workspace enclosure. The enclosure includes a workspace enclosure for enclosing a workspace adjacent to a device for controlling, protecting, monitoring, and / or monitoring an electric power system, thereby providing a shelter or barrier to the elements for personnel accessing the device. Generally, the enclosure may be partitioned to include a number of cabinets, in each of which a number of devices may be installed. The enclosure may further include a platform, guide members, protective barriers and cover members (when retracted housed in a cover cabinet) to provide a shelter or barrier to the elements for personnel accessing the devices from a select workspace. The enclosure may be modular in that multiple modules, each of which may include its own protective cover member, may be installed adjacent to each other, such that enclosed workspaces may be selectively extended to provide enclosed workspaces only as needed.
Owner:SCHWEITZER ENGINEERING LABORATORIES
State maintenance method and device for secondary equipment of power grid
ActiveCN102222276ALow investment costReduce maintenance costsData processing applicationsSwitchgearEvaluation resultMaintenance strategy
The invention discloses a state maintenance method for secondary equipment of a power grid. The method comprises the following steps of: establishing a maintenance model: establishing a state maintenance model comprising a plurality of assessment items and a maintenance strategy for the secondary equipment in a management information system, wherein each assessment item comprises at least one assessment index; evaluating an equipment state: acquiring online and / or offline data information of the assessment index of each assessment item in the state assessment model of the secondary equipment to be detected from the management information system and evaluating the state of the equipment according to the data information; and making a maintenance scheme: making a maintenance scheme of the equipment according to a state evaluation result of the equipment and the maintenance strategy in the state maintenance model. The invention further discloses a corresponding state maintenance device for the secondary equipment of the power grid. According to the method and the method, the investment and maintenance costs of the secondary equipment of the power grid can be reduced greatly.
Owner:SHENZHEN POWER SUPPLY BUREAU
Maintenance car of handcart type breaker equipment
ActiveCN102315600AThe distance is easy to adjustGuaranteed water positionSwitchgearVehicle frameEngineering
Owner:CHANGZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +1
Animal driving device and method for transformer substation
InactiveCN101847833AEnsure safetyGood effectMechanical vibrations separationAnimal repellantsSonificationMicrowave
The invention discloses an animal driving device for a transformer substation, which comprises a central processing unit, a microwave induction unit, an ultrasonic playing control unit, a power amplification unit and an acoustic wave output load, wherein a signal output end of the microwave induction unit is connected with a signal input end of the central processing unit; a control output end of the central processing unit is connected with a control input end of the ultrasonic playing control unit; and after being amplified by the power amplification unit, ultrasonic signals emitted by the ultrasonic playing control unit are outputted by the acoustic wave output load. In the animal driving device, a double driving means of ultrasound and sound that frightens animals is adopted to drive the animals, so that the animals are kept far away from electrical equipment, and the safety of the electrical equipment is ensured; animal types are judged by a microwave induction device, ultrasonic waves with different frequencies are generated according to different types, and thus the animal driving device has the pertinence. The animal driving device reduces careless omission caused by the conventional mode and improves security coefficients. In addition, the invention also discloses an animal driving method for the transformer substation.
Owner:CHONGQING UNIV
Safe assembly and disassembly device for high-voltage grounding wires
ActiveCN102983526AAchieve releasePrevent falling off and hurting peopleCable installation apparatusSwitchgearPower gridHigh pressure
Owner:STATE GRID HEBEI ELECTRIC POWER CO LTD
Method and device for maintaining power transmission and transformation equipment
InactiveCN102354918AAvoid failureAvoid normal workSwitchgearElectric power transmissionEvaluation result
The invention provides a method and device for maintaining power transmission and transformation equipment. The method comprises the following steps of: acquiring data required by equipment maintenance decisions, such as equipment state quantity index warning information data acquired from a monitoring warning layer, state evaluation result data acquired from a state evaluation layer, fault diagnosis result data acquired from a fault diagnosis layer, risk evaluation result data acquired from a risk evaluation layer, maintenance decision suggestion data generated by a maintenance policy layer and external constraint conditions; and carrying out decision analysis on the acquired data, establishing an equipment state maintenance policy model, optimizing maintenance sequence, maintenance time and maintenance grade of the power transmission and transformation equipment, and determining equipment maintenance property as well as arranging a maintenance decision plan. By using the method and device, key equipment faults and unnecessary maintenance operations can be avoided by timely maintenances, and the optimal distribution and use are searched in limited maintenance cost, thus effectively saving manpower and material resources.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Rack for a switchgear cabinet
A rack for a switchgear cabinet, whereby the rack is assembled from frame legs, four of the frame legs being horizontally oriented forming a lower rack frame, which is connected to support profiles for bottom plates. The support profiles form a bottom frame (30), which has upward projecting fastening straps (50, 52). The frame legs (12 to 14) of the lower rack frame (11) have vertically aligned inner profile sides (21), which are provided with recesses (26) in the area of their lower edges (23) and of the adjoining profile sides for introducing the fastening straps (50, 52), and the fastening straps (50, 52) are screwed in place, resting on the inside of these inner profile sides (21) of the lower rack frame (11).
Owner:RITTALWERK RUDOLF LOH GMBH & CO KG
Intelligent transformer substation relay protection inspection system
ActiveCN105790441AEliminate potential safety hazardsSafe and stable operationCircuit arrangementsInformation technology support systemControl layerSmart substation
The invention discloses an intelligent transformer substation relay protection inspection system. The system comprises a server connected to an intelligent transformer substation station control layer network. The server is used for executing a method comprising the following steps of reading and analyzing a SCD file and acquiring an IP address list of a full station spacing layer device; starting an IEC61850MMS client and successively establishing MMS communication with the spacing layer device in the full station according to the IP address list; traversing and taking a fixed value of the device in the station, remote metering and a log and carrying out determination, wherein the step includes taking a protection fixed value information list and a soft pressure plate remote communication information list and comparing to the information list input by a user; and outputting an inspection result, wherein the step includes whether an output relay protection fixed value and pressure plate information are normal. In the invention, relay protection fixed value checking is realized; checking efficiency of a relay protection equipment fixed value is increased; a problem of low efficiency is solved and inspection quality is greatly increased.
Owner:STATE GRID CORP OF CHINA +1
Transformer accessory replacing method
InactiveCN101714449ANo need to wasteReduce cleanupInductances/transformers/magnets manufactureSwitchgearBodies oilExhaust valve
The invention discloses a transformer accessory replacing method comprising the following steps of: (a) connecting a transparent plastic hose on a transformer casing gas relay to serve as an oil level pipe, wherein the length needs to be higher than the height of a body oil conservator so as to observe the actual oil level; (b) connecting a hose on a transformer body to an exhaust valve on the oil conservator and connecting the middle with a vacuum pump; (c) when oil is pumped, closing the valve between the oil conservator and the body; (d) observing the oil level of the oil level pipe when the oil is pumped, and stopping the vacuum pump when the oil level is lower than replaced components; and (e) after the component is replaced, opening the valve between the body and the oil conservator to discharge the oil. The method does not waste insulating oil in the transformer and reduces a series of work of cleaning oil storage equipment, oil stain and the like, thereby increasing the work efficiency.
Owner:国网运行有限公司上海超高压管理处
Articulated support with lateral movement for high-voltage or medium-voltage electrical plant
InactiveUS7090176B2Guaranteed to move normallyPortable framesStands/trestlesHorizontal axisHigh pressure
Owner:ALSTOM TECH LTD
Intelligent control system of magnetic navigation polling robot
InactiveCN102593739AMeet job requirementsStrong adhesion to the groundSwitchgearCommunications systemCollection system
An intelligent control system of a magnetic navigation polling robot relates to a robot used for polling operation of a transformer substation. The system is characterized in that a database storage system, a man-machine interactive system and a robot moving control system are combined to form a control center which controls the robot to conduct polling and detecting through a wireless communication system, finally an intelligent collection system transmits detected data information back to the control center through the wireless communication system, wherein the database storage system, the robot moving control system, the wireless communication system and the intelligent collection system are combined to achieve the intelligent control system of the robot. The polling robot can replace manpower to finish polling operation of high voltage power transformation equipment of the transformer substation. The robot adopts magnetic navigation with the navigation accuracy within 5mm. The system adopts a crawler-type walking structure, has strong adhesion to the ground and can walk stably on the ground covered with snow just like walking on the ground.
Owner:沈阳中汇方元通信科技有限公司
Omnibearing ground-space isomeric substation polling system
InactiveCN102856827AFlexible inspection angleFull sightCircuit arrangementsSustainable buildingsSystems designPolling system
The invention discloses an omnibearing ground-space isomeric substation polling system, belonging to the field of substation polling system design. The technical scheme is that the system comprises a ground polling moving robot subsystem, a space poling flying robot subsystem, a monitoring center and an energy supply depot, wherein the ground polling moving robot subsystem, the space poling flying robot subsystem and the monitoring center are connected together through wireless signals. According to the system, robots are combined to carry out the substation polling, a polling angle is flexible, sight is comprehensive, so that a labor resource is saved, polling difficulties under severe geographical condition and meteorological environments are reduced, polling convenience time is shortened, daily examination efficiency is improved, and a situation of false judgment and maloperation when an independent robot is used for polling is solved; and the system is not only applicable to polling of a substation, and can be expanded to be used for searching and polling of more fields.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Cluster management and control system for substation inspection robot
ActiveCN105743004ARealize centralized management and controlLower latencyCircuit arrangementsSustainable buildingsResource utilizationControl system
The invention provides a cluster management and control system for a substation inspection robot. The inspection robot can transfer among multiple substations through the transportation of an inspection deploying vehicle, so that one inspection robot can be used for inspecting multiple substations; the inspection robot is connected with an inspection deploying vehicle monitoring backstage through a wireless local area network; the inspection deploying vehicle monitoring backstage can receive the inspection data in real time so as to monitor the instantaneous state of the substations; the wireless local area network can be transferred along with the transfer of the inspection deploying vehicle, so that the wireless local area network can be applied to multiple substations without requiring to rebuild a network in each substation; the network delay of the wireless local area network is relatively low, so that the real-time substation monitoring can be realized; the inspection deploying vehicle monitoring backstage is connected with a remote centralized control backstage through a special network, so that the overall network environment is safer; meanwhile, the centralized management and control of multiple substations can be realized simultaneously; and furthermore, the resource utilization ratio is improved due to the manner that one inspection robot is used for inspecting multiple substations.
Owner:ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
Substation inspection robot-based circuit breaker state template-matching identification method
ActiveCN102314615AProcessing speedMeet the real-time requirements of on-site inspectionCharacter and pattern recognitionSwitchgearTemplate matchingAlgorithm
The invention discloses a substation inspection robot-based circuit breaker state template-matching identification method, wherein a substation inspection robot is used for automatically acquiring an image of a circuit breaker, and a template matching method is used for identifying the state of the circuit breaker. The method comprises the following specific steps: respectively extracting areas where characters of open and close are positioned as templates by using the template matching method, and carrying out matching on follow-up shot images; carrying out image segmentation on the open template, the close template and matched windows by using maximum between-cluster variance method (OTSU method) to obtain binary images which contain targets and backgrounds; and comprehensively judging the final state of the circuit breaker based on the difference degree between the templates and the targets of the matched windows. Proved by experiments, the method disclosed by the invention has the advantages of fast processing speed, high reliability, no misjudgment on given open-close conclusion and capability of satisfying with the requirements of real time and high reliability for field inspection.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
High-precision positioning and inspection system based on unmanned aerial vehicle applicable to transformer substation
InactiveCN108279003APrecise positioningRealize intelligent inspectionNavigation by speed/acceleration measurementsRadio transmissionUltra-widebandTransformer
The invention relates to a high-precision positioning and inspection system based on an unmanned aerial vehicle applicable to a transformer substation. The high-precision positioning and inspection system comprises an unmanned aerial vehicle system, a UWB (Ultra-wide Bandwidth) positioning system and a ground operation and maintenance control center, wherein the unmanned aerial vehicle system comprises at least one transformer substation unmanned aerial vehicle capable of resisting strong electromagnetic interference, and an airborne unmanned aerial vehicle UWB label module; the UWB positioning system comprises a plurality of UWB positioning base station modules arranged at each position in the power substation, and an environment monitoring module and a wireless communication module whichare connected with the UWB positioning base station modules; the UWB positioning system and the ground operation and maintenance control center have mutual data through the wireless communication module; the unmanned aerial vehicle is wirelessly communicated with the ground operation and maintenance control center; the unmanned aerial vehicle UWB label module is communicated with the UWB positioning base station modules through emitted ultra wideband electromagnetic wave. According to the high-precision positioning and inspection system provided by the invention, high-precision positioning ofthe unmanned aerial vehicle in the transformer substation, issuing of a flight task instruction and inhibition of the strong electromagnetic interference are realized, so that state inspection of electric power equipment of the power substation is realized.
Owner:FUZHOU UNIV
System and method for monitoring and configuring multiple devices in a power distribution network
InactiveUS20070168161A1Nuclear monitoringMeasurement arrangements for variableElectric power transmissionEngineering
A method and system for monitoring and configuring power transmission equipment for use by utility companies. The method and system use independently operating hardware / software platforms to distribute the processing functions of the system. The system consists of a front end manager and a communications manager operating on independent platforms. The front end manager and communications manager communicate via any type of network such as LAN, WAN or even the World Wide Web. The front end manager interfaces to a user and provides a graphical user interface (GUI) to allow the user to configure and monitor power devices. The communications manager communicates with the power devices and passes information to and from the user. The system can have multiple front end managers communicating to multiple communications managers simultaneously.
Owner:ABB TECH AG
Multi-compartmental transformer and methods of maintenance therefor
A compartmental transformer and a method maintenance therefor is provided. The transformer includes a first compartment housing first equipment electrically coupled to the high voltage side of the transformer and a second compartment housing second equipment electrically coupled with the low voltage side of the transformer. The transformer further includes a maintenance compartment, separate from the first and second compartments, for housing a plurality of maintenance devices used for servicing the transformer while the transformer is energized. The method includes co-locating and securing preventative maintenance devices in one secured compartment remote from a voltage at or above a level corresponding to the lower of the voltages of the primary or secondary sides of the transformer, maintaining the transformer in an energized state, opening the secured compartment, and performing preventative maintenance tasks on respective preventative maintenance devices while the transformer is maintained in the energized state.
Owner:COMMONWEALTH EDISON
Method for calculating repair cycle of power transformer in operation
ActiveCN102495967AThe maintenance cycle is economical and reasonableImprove usabilitySpecial data processing applicationsSwitchgearFailure rateWork period
The invention discloses a method for calculating a repair cycle of a power transformer in operation. The method has the advantages that: influence of failure-rate level and a repair time interval on the residual life cost of the power transformer is fully considered, a reasonable repair cycle is determined, and equipment management cost is reduced. The method comprises the following steps of: firstly, establishing a power transformer failure rate and average no-failure operation time estimation model on the basis of operating reliability data of equipment; secondly, according to a calculation result of the estimation model, establishing an in-operation power transformer residual life cost model for comprehensively considering the failure-rate level of the equipment and the repair time interval, and classifying the residual life cost into operating cost, repair cost, failure cost, failure loss, operating period indirect cost and disposal cost according to operation type; and finally, with the aim of optimizing the residual life cost, calculating a suggested time interval of the repair cycle of the power transformer.
Owner:JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
Frame piece for a rack for a switching cabinet
InactiveUS6273533B1High strengthMinimize material expenditureSubstation/switching arrangement casingsRack/frame constructionEngineeringSwitchgear
A frame piece for a rack of a switching cabinet. With minimum material an optimum result is obtained with regard to fastening planes and fastening direction as well as stability. A profile inside and a profile outside are used to form the frame piece as a closed hollow profile with one or two longitudinally directed hollow spaces. The profile outside delineates a free space to an outside corner edge of the rack. The profile inside has a profile section with several rows of fastening seats or several profile sections at an angle with respect to one another with at least one series of fastening seats. The profile inside and the profile outside form outside edges in a region of the right-angled abutting outsides of the rack. The outside edges are designed as double-layer sealing struts or connected to them in a direction to the outside corner edge connecting struts with or without receiving grooves for sealing elements.
Owner:RITTALWERK RUDOLF LOH GMBH & CO KG
Reliability-based maintenance decision method for switch equipment
ActiveCN102623910AEnabling Reliability Maintenance DecisionsSave resourcesClimate change adaptationSwitchgearElectric power systemSwitchgear
The invention provides a reliability-based maintenance decision method for switch equipment. According to the invention, a reliability-based maintenance decision method for switch equipment of an electric system is developed aiming at the defects of the traditional maintenance decision method for the switch equipment. The reliability-based maintenance decision method comprises the following steps of: analyzing the aging condition of the switch equipment and sending a maintenance prewarning by applying a reliability maintenance theory; analyzing the failure consequence seriousness level of the switch equipment, carrying out importance quantitative evaluation on switch equipment components to be maintenance by combining historic operation statistical data of the switch equipment and sequencing an equipment set to be maintained by utilizing the historic statistical fault rate, the voltage level and the importance weight value of the equipment; and adjusting the maintenance decision sequence of the equipment set to be maintained by an associated switch search method, and establishing a maintenance capability restriction and weather restriction-considered maintenance schedule decision method for the switch equipment according to the maintenance decision sequence and by taking deficient power supply volume as an optimization goal.
Owner:CHONGQING UNIV +1
Intelligent transformer station relay protection equipment repair safety measure auxiliary analysis early warning method
ActiveCN106340818AImprove accuracyImprove reliabilityEmergency protective circuit arrangementsSwitchgearSmart substationTransformer
The invention discloses an intelligent transformer station relay protection equipment repair safety measure auxiliary analysis early warning method. The method comprises the following steps: defining an operation state; establishing a safety measure rule under an operation state of relay protection equipment or a whole gap; configuring a front examination rule; configuring a detection scene after a safety measure is executed; performing configuration examination of the safety measure rule; previewing and checking the safety measure rule; printing the safety measure rule; freely selecting the operation state of the relay protection equipment or the gap; examining an initial stage of the safety measure rule in real time; examining the front examination rule in real time so as to realize cross early warning; comparing the implementation state of the safety measure rule with an implementation sequence in real time; performing state perceiving and scene real-time detection; and dynamically displaying a real-time comparison result and a scene detection integrated analysis result and realizing a real-time alarm function. The method provided by the invention can effectively reduce the probability of maloperation and improves the correctness and the reliability of an intelligent transformer station operation safety measure.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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