41 results about "Power substation" patented technology

The invention discloses a transformer substation switch box operation mobile robot, a working method and a system, and belongs to the field of the mobile robots. The transformer substation switch box operation mobile robot comprises a robot body, a mobile platform, a mechanical arm, a two-dimension code scanner, a power supply management system, a motion control system and a visual sensing system, wherein the mobile platform is arranged at the lower part of the robot body, and is a crawler-type mobile platform; the power supply management system and the motion control system are arranged in the robot body; the mechanical arm is mounted above the robot body; the visual sensing system is mounted above the tail end of the mechanical arm; and the two-dimension code scanner is arranged under the robot body. The transformer substation switch box operation mobile robot has the characteristics of high precision, stability in operation, safety, reliability, etc., can realize the effect of artificial intelligence operation, and can replace humans to realize the effect of standard operation.

The invention discloses a transformer substation safety protection system and relates to the transformer substation technology field. The system comprises a fence mesh, a first protection door, a second protection door and a monitoring host. The fence mesh comprises an infrared fence and a high-voltage pulse power grid. The infrared fence comprises an infrared correlation device. The infrared correlation device is arranged in a gap between leads of the high-voltage pulse power grid. Each protection door is provided with a fingerprint identification module, an electromagnetic lock and an image acquisition module. The fingerprint identification module and the image acquisition module are connected to a signal input terminal of the monitoring host. The monitoring host is used for controlling motion of the electromagnetic lock according to fingerprint information collected by the fingerprint identification module and human face information collected by the image acquisition module. The system possesses characteristics that safety and stability are high and a protection effect is good.

The invention discloses a novel transformer station secondary cable alignment device. The device comprises a detected end and a detection end which are respectively arranged at two ends of a to-be-detected secondary cable, and a voltage measurement device used for measuring a voltage of the two ends of the secondary cable, wherein the detected end is provided with a power source, a switch K1, N wiring ends and N+1 wiring resistors connected in series between the power source and the switch, and the N wiring ends are respectively connected with wiring nodes of any two adjacent wiring resistors. The device is advantaged in that through setting alignment terminals, the wiring resistors are arranged among the alignment terminals, all the wiring resistors are connected in series with a certain voltage, a voltage of any two points of each wiring terminal can be determined, so a voltage difference table can be made, through voltage measurement of the other end of the to-be-detected secondary cable, determination of corresponding labels can be carried out through a table query method, cable alignment can be accomplished, the device is integrally convenient and rapid, and low cost and high precision are realized.

The invention provides a transformer substation monitoring device, method and system and relates to the technical field of electric power. The device comprises a sedimentation acquisition unit, a horizontal displacement acquisition unit, a data processor and a display device, wherein the sedimentation acquisition unit is arranged at an underground position of a monitoring point and is used for acquiring sedimentation data of the monitoring point; the horizontal displacement acquisition unit is arranged at a ground surface position of the monitoring point and is used for acquiring horizontal displacement data of the monitoring point; the data processor is used for obtaining the sedimentation data and the horizontal displacement data and displaying the sedimentation data and the horizontal displacement data through the display device, and is also used for sending the sedimentation data and the horizontal displacement data to a remote terminal through a wireless manner so as to carry out analysis and early warning on the sedimentation data and the horizontal displacement data by the remote terminal. According to the transformer substation monitoring device, method and system, the sedimentation data and the horizontal displacement data of a transformer substation foundation can be acquired in real time and the analysis and early warning on the data are carried out by the remote terminal, and hidden dangers can be found in time so that operation safety of an electric power system is ensured.

The invention discloses a storage system for a network communication recording device of a digital substation. The storage system comprises a main controller board module, a hard disk pack module and an IPMI (Intelligent Platform Management Interface) module, wherein the main controller board module is provided with an embedded processor, dual memories and an operation accelerator chip; software system modules are arranged in the dual memories; an operation system module of each software system module is used for running an guiding and loading program for the embedded processor, driving an embedded Linux operation system and introducing a Rootfs file system; a monitoring module is used for monitoring system operation, network link, chip temperature and voltage data of a module and providing the data to the outside through an IPMI specification; a storage control module is used for establishing, removing, restoring, reestablishing and monitoring a disk array of the hard disk pack module, carrying out operation management through a WEB management interface module and realizing NAS (Network Attached Storage) management and IPSAN (Internet Protocol Storage Area Network) management through a data access management module; a data tamper preventing module is used for preventing data from being illegally tampered; and the hard disk pack module is an RAID (Redundant Array of Independent Disk) 0/1/5/6 type disk array; and the IPMI module is used for monitoring the operation condition of the storage system and exporting monitoring data according to the IPMI specification.

The invention discloses a seamless communication method for a substation and a dispatching master station. The method comprises the following steps: an IEC61850 proxy server is set up in the substation; the IEC61850 proxy server is added to a SCD model of the substation as an IED device; simulation proxy is carried out on the IED device in the substation through the IEC61850 proxy server; and the dispatching master station and the IED device in the substation communicate through the IEC61850 proxy server. Information transmission between the substation and the master station is improved, the problems of accuracy and reliability in information transmission are effectively solved, a high-quality and efficient basic information transmission and exchange way is provided for multiple application functions of an intelligent substation through seamless information and model transmission, and a good foundation platform is constructed for power grid dispatching and monitoring.

The invention discloses an accurate fire extinguishing system for large oil filling equipment used in a substation. The accurate fire extinguishing system comprises a fire protection center control management system and a transformer, wherein the fire protection center control management system is connected with a control module and a plurality of transmission equipment boxes, the transmission equipment boxes are connected with intelligent foam automatic fire extinguishing systems and multispectral temperature-sensing flame-sensing composite image type fire detectors, and the intelligent foamautomatic fire extinguishing systems are connected with foam tank systems; and each intelligent foam automatic fire extinguishing system comprises a first mounting base which is in a C shape, and a first motor is installed at one end of each first mounting base. The accurate fire extinguishing system can monitor the transformer in all directions and confirm a fire disaster twice to prevent misoperation, at the same time, the dangerous areas of the transformer are numbered, the highly targeted purpose is realized, a fire monitor is conveniently and quickly adjusted to the specified preset position for fire extinguishing when the fire disaster happens, operation is safe and reliable, and the accurate fire extinguishing system has good application prospects.

The invention discloses an intelligent substation interval electrical equipment measurement and control system and method. The system comprises a plurality of cluster measurement and control modules;each cluster measurement and control module comprises a plurality of interval virtual measurement and control units, and the interval virtual measurement and control units measure and control intervalelectrical equipment of an intelligent substation; the interval virtual measurement and control units in any cluster measurement and control module are in one-to-one correspondence with the intervalvirtual measurement and control units in other cluster measurement and control modules; and when the interval virtual measurement and control unit in the running state fails, the interval virtual measurement and control units in other corresponding cluster measurement and control modules are switched from the hot standby state to the running state. By adopting a multi-set cluster measurement and control method, each cluster measurement and control module comprises the same interval virtual measurement and control units, and when any interval virtual measurement and control unit fails, the corresponding interval virtual measurement and control unit is automatically switched to, so that the problems that the number of secondary equipment is large, interval layer measurement and control configuration is single, redundant standby application does not exist are solved, and redundancy configuration of measurement and control functions of interval electrical equipment is realized.

The invention discloses a power grid voltage measurement abnormity identification method based on a distance correlation coefficient, and the method comprises the steps of automatically calculating adistance correlation coefficient matrix among a plurality of intervals through a given multi-dimensional voltage historical data file F1 at the same voltage level, and learning to find out a thresholdvalue for identifying the abnormity of voltage measurement data; calculating a distance correlation coefficient matrix among a plurality of intervals by utilizing the to-be-identified voltage data file F2; and judging a voltage measurement data state in the new multi-dimensional voltage data file by combining a threshold value which is automatically learned by utilizing historical voltage data and is used for identifying the abnormity of the voltage measurement data, thereby realizing the voltage measurement and transmission state identification of a transformer substation voltage transformer, a secondary transmission and transformation loop and a measurement and control device. According to the invention, the slight measurement abnormality of the voltage transformer can be discovered inadvance by applying the existing power grid voltage data without power failure, maintenance and hardware installation, and the identification precision is high.

The invention discloses a power grid circuit wide-area current protection method. The method includes the first step of synchronously measuring the voltage phasor and current phasor of each transformer substation of a power grid through an existing wide-area measuring system of the power grid so as to obtain power grid synchronous data; the second step of calculating an admittance variation matrix through a wide-area backup protection system when single-circuit trip of the power grid occurs, and further calculating a voltage variation matrix of each transformer substation and the current variation of each circuit after the single-circuit trip of the power grid occurs; the third step of establishing a current protection criterion according to the calculated circuit current variation and the circuit current variation measured through the existing wide-area measuring system. According to the power grid circuit wide-area current protection method, the function of protecting the power grid circuit wide-area current after the single-circuit trip occurs is achieved through the existing wide-area measuring system of the power grid; when the topological structure of the power grid changes after the single-circuit trip of the power grid occurs, the variation of current which flows through each circuit after the single-circuit trip of the power grid occurs can be directly calculated without modifying the power grid admittance matrix, and the whole calculation process can be completed within 200 microseconds.

The invention relates to a power transmission system displacement online monitoring and early warning system. The system comprises a data collector used for monitoring state changes of a tower and a transformer substation, a data acquisition and detection unit connected with the data collector, a data processing and substation scheduling unit connected with the data acquisition and detection unit,a narrowband Internet of Things communication module, a background monitoring center in wireless connection with the processing and substation scheduling unit through the narrowband Internet of Things communication module, and a power supply unit connected with and supplying power to the data collector, the data acquisition and detection unit, the data processing and substation scheduling unit and the narrowband Internet of Things communication module. Acquisition, transmission and analysis of parameters such as inclination, settlement, environment wind speed and wind direction of the power transmission line tower and the transformer substation are realized, and finally real-time monitoring and hidden danger early warning of the displacement condition of the tower and the transformer substation are realized, so that power supply accidents caused by displacement of the tower and the transformer substation can be eliminated in the bud.

The invention discloses a converter transformer on-load tap changer top cover deformation protection device, which comprises an oil pressure starting unit and a strain protection unit which are arranged on a converter transformer on-load tap changer top cover, the oil pressure starting unit comprises a high-frequency dynamic oil pressure sensor, the strain protection unit comprises a strain sensor, and a strain monitoring unit is further connected with a tripping unit. The application of the device has an irreplaceable protection effect on reliably and quickly discriminating the plastic deformation of the top cover. The device can reliably operate for a long time, is not influenced by strong electromagnetism and greasy dirt environment, has the advantages of high response speed and high measurement frequency, does not inject harmonic waves into a power system in the operation process, and does not influence the normal operation of primary and secondary equipment in a transformer substation.

The invention discloses a transformer substation switch cabinet partial discharge state evaluation method based on a high-dimensional index. The method comprises the following steps: collecting phase decomposition partial discharge PRPD atlas data of a transformer substation switch cabinet; spectrogram construction and statistical characteristic calculation are carried out on the obtained partial discharge PRPD spectrogram data; performing preprocessing on statistical characteristics obtained by calculation of the atlas data, and constructing a spatio-temporal data set matrix; and based on a random matrix theory, sequentially selecting matrixes on the spatio-temporal data set matrix by adopting a moving sliding window method, constructing a statistical magnitude by utilizing a Chebyshev polynomial T3 to judge whether an abnormal value occurs, calculating the statistical magnitude of the matrix selected by a sliding window, and evaluating the state of the substation switch cabinet. The operation state of the transformer substation switch cabinet can be monitored, and the monitoring efficiency and accuracy of the transformer substation switch cabinet are improved.

The invention discloses a multipoint electric energy quality monitoring system for a transformer substation. Based on a plurality of electric energy quality parameter acquisition nodes and transformerstation working condition acquisition nodes, electric energy quality parameters and transformer station working condition parameters are autonomously acquired. the electric energy quality parametersand the transformer substation working condition parameters are uploaded, processed and identified through the monitoring terminal to obtain an electric energy quality event identification result anda transformer substation working condition evaluation result; and a corresponding maintenance strategy is obtained and output according to the power quality event identification result and the transformer substation working condition evaluation result. The curve graph is generated according to the preset drawing rule, and the display screen is controlled to display the curve graph, so that visualexpression and accurate classification and identification of the power quality events are realized, evaluation of the working condition of the transformer substation is realized, a maintenance strategy can be automatically provided, and stable operation of the transformer substation and power quality of the transformer substation are guaranteed.

The invention is suitable for the field of intelligent security and protection, and provides a transformer substation fire monitoring method and system and related equipment. The method comprises the steps: determining a monitoring area including a transformer substation area, and dividing the monitoring area into a wire area, the transformer substation area and a field area; arranging a high-position monitoring camera in a transformer substation area, arranging a low-position monitoring camera in a field area, and establishing a monitoring data table for the high-position monitoring camera; acquiring a data set to train a flame detection model to obtain a flame detection algorithm; carrying out the fire behavior recognition through a high-position monitoring camera by using a flame detection algorithm; and carrying out the fire behavior recognition through a low-position monitoring camera by using a flame detection algorithm. According to the invention, high-precision monitoring of the transformer substation is realized through multi-azimuth identification, the load of edge equipment is reduced, and the usability and flexibility are improved.

The invention provides a safety measure intelligent management method. The safety measure intelligent management method comprises the following steps: S1, establishing a specific dictionary of each transformer substation; S2, segmenting statements on the work ticket information by adopting a dictionary matching algorithm to obtain segmentation results; S3, preprocessing the segmentation result toobtain a safety measure arrangement guide; and S4, sending a visual safety measure arrangement notification according to the safety measure guidance. The invention further provides a safety measure intelligent management system. The safety measure intelligent management system comprises the intelligent safety measure device, an Internet of Things communication system, a monitoring analysis system,a storage module and a display terminal. According to the invention, by segmenting work ticket information through employing a dictionary matching algorithm, and carrying out the preprocessing of a segmentation result to obtain a safety measure arrangement guide, an operator arranges a safety measure according to the safety measure arrangement guide. The problem that a large amount of time is consumed for arranging safety measures at present is solved.

The invention provides a test terminal platform of a transformer substation safety automatic device. The test terminal platform comprises a switch chip, a self-adaptive power supply module and a function realization module, wherein the self-adaptive power supply module and the function realization module are connected with the switch chip. The self-adaptive power supply module connected with a PCcomprises two network ports, two first switches, an external power supply interface, at least one step-down conversion module and a second switch. The function realization module is also connected with a transformer substation safety automatic device. After one network port is connected with the PC or a network device and the other network port is in cascade connection with a network port of an adjacent test terminal platform and adjacent power supply is not received, corresponding switch control is carried out, so that power is provided for the adjacent test terminal platform by utilizing thenetwork port cascaded connection after local independent power taking and data are transmitted with the adjacent test terminal platform, the substation safety automatic device, the PC and the like ina self-networking manner. Therefore, the dependence on a switch can be eliminated; independent configuration of power supply concentrators with power supplies or various power supplies can be avoided; and the access cost and difficulty of the test terminal platform and other network equipment can be reduced.

The invention belongs to the field of intelligent substation measurement and control system detection, and discloses an intelligent substation measurement and control system centralized redundancy standby mode detection method and system, and the method comprises the steps: a system simulation instruction is transmitted to a to-be-detected measurement and control system with a redundancy function and a standard detection device; the detected measurement and control system with the redundancy mode performs redundancy mode detection according to the system simulation instruction and sends an output signal to the result comparison and evaluation system; the standard detection device carries out processing according to the system simulation instruction and sends an output signal to the result comparison and evaluation system; and an output signal of the detected measurement and control system with the redundancy mode is compared with an output signal of the standard detection device on the comparison evaluation system to obtain a detection result. According to the invention, a consistent detection result can be timely and accurately obtained, and whether the centralized redundant standby mode of the coma substation measurement and control system can work normally or not can be visually reflected; and efficient and safe operation of the intelligent substation measurement and control system is ensured.

The invention relates to a transmission analysis-based graphical expressing method. The transmission analysis-based graphical expressing method comprises the following steps of S1, analyzing an SCD file to obtain SCD information; S2, performing sorting and storing on the analyzed SCD information to establish index; S3, connecting substation data and analyzing the data; and S4, performing graphical expressing on the data obtained by analysis. By adoption of the transmission analysis-based graphical expressing method, virtual secondary loop graphical form and secondary loop restoration can be realized; in addition, an interaction process of a whole event can be described exhaustively in a dynamic form through a progressive expressing way, so that checking of the event and verification of the secondary loop can be performed conveniently, and quick fault positioning by an operation and maintenance staff can be realized conveniently.

The invention discloses a novel optical fiber composite low-voltage cable. The cable comprises a cable core, wherein the cable core is formed by concentrically twisting multiple low-voltage power cable insulated cores and an optical cable; a covering tape layer, an armor layer and an outer sheath sequentially and concentrically wind around the cable core. Power cables and the communication optical cable are integrated in one cable, the purpose that the entering problem of cables is solved once through one-time construction and one passage only is achieved technically, repeated construction of multiple lines such as electric wires, network cables, telephone wires, cable television cables and the like in the past can be replaced, and cable resources and pipeline resources are greatly saved. The cable integrates functions of optical fiber communication and power transmission, has the characteristics of high-reliability data transmission, low price, convenience in connection and the like, has the advantages of small outer diameter, low weight and small occupied space, and is important to future data transmission for home intelligentization, office automation, digital substations and industrial control networking.

The load importance-based three-stage topological operation optimization method provided by the embodiment of the invention comprises the following steps: collecting power distribution network operation data after a fault, and establishing a topological structure for fault identification; establishing a load importance evaluation model according to the power-losing charge in the distribution network operation data; searching a distributed power generation device with adjustable power in the island area of the distribution network, and carrying out first-stage topological optimization; establishing a two-stage topological optimization model, and performing load transfer on the standby feeder line and the distributed power generation device; and after load transfer, if a target substation in an overload operation state still exists, establishing a secondary transfer model, and obtaining the optimal transfer load capacity of the target substation. The method can effectively process the decision of the optimal operation mode of the distribution topology under the fault, improves the power supply reliability of the power distribution network, can check and optimize the maintenance mode of the power distribution network, facilitates the regulation and control of the comprehensive analysis of the load of the cloud platform power distribution network, and also facilitates the optimal utilization of the system capacity of the power distribution network.