2816 results about "Smart substation" patented technology

The invention relates to a circuit device used for providing distant indication for conditions of a distribution network and carrying out distant control on a switching device in the distribution network, in particular to an integrated monitoring system information platform for a transformer substation. The integrated monitoring system information platform comprises an integrated information platform body and a station level advanced application module. The integrated information platform body comprises an application-independent graphic base system, a real-time database based on the unified modeling technology, a data normalization module, a data verification module, a data service module, a file service module and a historical library storage service module. The station level advanced application module comprises a graphic, model and library integrated module, a source side maintenance module, a primary equipment status visualization module and a one-button sequential control module. According to the integrated monitoring system information platform, by arranging and integrating functions of various subsystems and carrying out data structure reconstitution on the unified platform, the use ratio and interactivity of data are improved, the reliability, integration and maintainability of the system are improved, and new functional subsystems can have access to the transformer substation conveniently.

The invention discloses an intelligent auxiliary comprehensive monitoring and D5000 comprehensive linkage platform of a transformer substation. The intelligent auxiliary comprehensive monitoring and D5000 comprehensive linkage platform comprises an intelligent auxiliary facility monitoring system, a dispatch-end video master station, an information integrated platform, a transformer substation automatic system and an isolating device. The dispatch-end video master station adopts a network high-definition ball for monitoring video surveillance inside and outside the transformer substation and meanwhile is provided with a network hard disc video cassette recorder for acquiring and uploading real-time videos, planning a warning line and a warning region of a switching station and performing intelligent analysis to produce warning signals. The transformer substation automatic system monitors a power protection device at the front end of a power grid and uploads acquired data to the information integrated platform. The transformer substation automatic system and the information integrated platform are communicated through the isolating device. The safe and reliable running of the intelligent transformer substation is ensured.

The invention discloses an inspection system based on a mobile inspection apparatus of a transformer station and an inspection method thereof. The inspection system comprises a monitoring center; and the monitoring center is connected with at least one station-level mobile inspection apparatus intelligent inspection system of a transformer station through a network. And all station-level mobile inspection apparatus intelligent inspection systems include at least one base station. Meanwhile, an environmental information collection subsystem and fixed point auxiliary monitoring subsystems that are installed at places needing monitoring equipment in the transformer station are arranged in the transformer station. A detection unit comprises an infrared detection unit and an ultraviolet detection unit; and the ultraviolet detection unit is composed of an ultraviolet video server and an ultraviolet detection apparatus. According to the invention, an inspection path is optimized; the safety protection is good; and the intelligent degree is high; moreover, the inspection system has advantages of whole time fault detection and seamless video monitoring; and a novel technical detection means and omnibearing safety guarantee are provided for an intelligent transformer station.

The invention discloses a testing and verifying system appropriate for an intelligent transformer substation and a verifying method. The system comprises an upper computer and an embedded system lower computer that comprises a collecting plate, a signal plate, a data plate and four sub-plates of a synchronization plate. The signal plate, the data plate and the synchronization plate are supplied with power by an external adapter DC5V. The synchronization plate provides synchronization pulse signals to other sub-plates. Ethernet of the upper computer is connected with the signal plate of the upper computer, the intelligent transformer substation, and a process layer, an interval layer and a station layer network of a digital transformer substation by an RJ45 twisted-pair through an industrial switchboard. The testing and verifying system appropriate for the intelligent transformer substation is convenient to detect and verify the electrical capacity of current intelligent transformer substation and digital transformer substation and improves the debugging speed of the intelligent transformer substation and digital transformer substation greatly so as to provide good technical assurance to construction of the intelligent transformer substation and digital transformer substation and lay a solid foundation for safe and stable operation of the intelligent transformer substation and digital transformer substation.

The invention provides a hierarchical protection control system facing a regional power grid. The hierarchical protection control system comprises an in-situ level protection device, a substation area protection control system and a wide area protection control system, wherein the in-situ level protection device is configured according to a traditional protection scheme and adopts a direct sampling direct trip mode or a direct sampling network trip mode; the substation area protection control system is configured according to substations or voltage classes, utilizes an information sharing advantage to improve the backup protection performance, realizes protection functions of backup protection, redundancy protection, failure protection, and the like, and control functions of spare power automatic switching, low-frequency and low-voltage load shedding, and the like, and adopts a network sampling network trip mode; and the wide area protection control system is configured according to areas, realizes functions of wide area backup protection, self-adaptive adjustment of protection fixed values, low-frequency and low-voltage load shedding, power grid state evaluation, safety pre-warning, and the like, and realizes the interaction and the sharing of information of intelligent transformer substations in the areas through a wide area communication net. The hierarchical protection control system has the advantages that the reliability and the selectivity of relay protection can be improved on the basis that protection configuration of the existing power grid is not changed, so high requirements of power grid interconnection, new energy access, and the like on relay protection are satisfied.

The invention relates to an intelligent warning and fault analysis realizing method applied to an intelligent transformer substation monitoring system, which belongs to the technical field of transformer substation automation. An intelligent warning and fault analyzing module is used for analyzing various pieces of information reported by a measurement and control device, a protective device and a fault recorder, generating a fault analysis report by combining topology with every fault in an automatic identification fault reasoning model, and submitting the generated fault analysis report to a scheduling master station at a master station end. The workload of personnel on duty is greatly reduced, and the fault processing efficiency is improved. The requirement of an intelligent transformer substation on an intelligent warning and fault analysis system can be met, faults can be quickly judged and analyzed, and processing schemes can be provided so as to assist the personnel on duty in quickly processing the faults, and reduce the loss caused by the faults.

The invention discloses a fault diagnosis and assessment method of an intelligent substation. The fault diagnosis and assessment method is characterized by including the specific steps that a fault diagnosis and assessment information model of the intelligent substation is constructed; fault and assessment indexes of a primary device, a secondary device and a network device in the intelligent substation are calculated on the basis of the fault diagnosis and assessment information model; a Petri net is used to perform primary fault diagnosis and assessment to the intelligent substation; and final diagnosis and assessment are performed by means of a distributed type expert system based on a knowledge base. The fault diagnosis and assessment method has the advantages of being clear in the diagnosis process, fast and practical in diagnosis methods and accurate and reliable in diagnosis results.

The invention provides a detection method and a detection system of an intelligent relay protection device. Aiming at the situation that compared with the prior art, dynamic properties of the relay protection device cannot be detected effectively in an intelligent substation spot, and starting from the feature of sharing of digitalization and informatization of an intelligent substation secondary system, the detection method which regards a digit simulation system as a data source and regards synchronous working of a plurality of digitized relay protection testers is provided and the detection system of the intelligent relay protection device is constructed. Various operating situations which probably happen in a transformer substation can be simulated according to an actual electric topological structure of an intelligent substation and device parameters construction and simulation models in a lab, simulating calculation can be conducted, transient test data which have higher similarity with the actual operating situations can be achieved by transforming, the transient test data can be output in the intelligent substation spot in a playback mode, and detection of the dynamic properties of the relay protection device and checkout work of protection definite value can be carried out.

The invention discloses an automatic test system for an intelligent substation spacing apparatus in the technical field of power systems, comprising: a test system control module and a test terminal connected with the same. In the system, signal authentication and input and output of test data are finished by establishing an input/output signal system at outside of the apparatus; signal pair point test of an apparatus station control layer is finished by a simulated MMS (Multimedia Messaging Service), analog input of the input signal of the apparatus is finished by a Goose/SMV process layer simulator, and behavior result of the apparatus is judged by monitoring a test closed loop network message; and different target test data object test cases are configured, the test data is input via the simulator so as to monitor behavior and response of the apparatus.

The invention discloses a one-layer network data processing method suitable for an intelligent substation. The one-layer network data processing method suitable for the intelligent substation is characterized in that preprocessing of all kinds of network message in the intelligent substation is achieved with a field programmable gate array (FPGA) module adopting FPGA technology, a time-stamp is stamped on the FPGA module as soon as the message enters into an measurement and control (MAC) controller and is stored with the message, network storm restraint, storage and message analysis are available, EtherType domain is distinguished, packet and classified processing is conducted, and meanwhile priority control and real-time transmitting of the message are achieved. The one-layer network data processing method for the intelligent substation has the advantages that realization of intelligent devices in the intelligent substation is simplified, reliability is strengthened, systematic manufacturing cost is reduced and maintainability of the system is optimized.

The invention discloses a multi-parameter identification based secondary system fault diagnosing method for an intelligent substation. The multi-parameter identification based secondary system fault diagnosing method is mainly applicable to digital substation accordant with IEC61850 communication protocol. The method includes: comprehensively analyzing multi-dimensional parameters including various alarm information, telemeasuring data, telecommand states and the like of a process layer, a spacer layer, a station control layer through a network message recording and analyzing device, monitoring states of secondary devices in real time by utilizing original messages as analysis data and utilizing recording of transient state of device exception and long-term monitoring of operation states as means, and realizing fault diagnosis and state monitoring of the secondary system of the intelligent substation. The multi-parameter identification based secondary system fault diagnosing method for the intelligent substation has the advantages in two aspects including that normal states of the secondary device of the intelligent substation can be monitored, background data and maintenance reference are provided for state maintenance; exception states are identified, quick fault diagnosis is realized, effective instruction can be provided for transport maintenance, and convenience in maintenance of the substation is improved.

The invention discloses a system for estimating a distributive state of an intelligent transformer station. The system comprises a scheduling center state estimation platform and a distributive state estimation plant terminal platform, and the distributive state estimation plant terminal platform comprises a transformer station real-time database, a transformer station graphic topology analysis module, a transformer station state estimation module and a distributive state estimation database. The transformer station graphic topology analysis module carries out transformer station topology analysis on station internal remote signaling on the basis of a power grid model static database maintained at a station terminal, relationship of topology connection and node device connection of station internal switch nodes and device parameters to form transformer station internal system topology; the transformer station state estimation module carries out transformer station state estimation on the station internal telemetry information and calculates credibility quality grade of information; and the distributive state estimation database is used for transmitting measurement data to a scheduling center state estimation real-time database through a transformer station communication server and a scheduling data network and simultaneously receiving information of the scheduling center state estimation real-time database. According to the system for estimating the distributive state of the intelligent transformer station, disclosed by the invention, the reliability and the accuracy of transformer station basic data can be improved, and the processing on secondary information defects is accelerated.

The invention discloses a dynamic recognition method for intelligent substation network device topology based on MAC address matching. The method includes the steps that an corresponding relation table between the IP address/multicasting address of an intelligent electronic device (IED) and the name of the IED is obtained through analyzing an intelligent substation configuration file (SCD), and a corresponding relation table between the IP address/multicasting address of the IED and an MAC address is obtained through analyzing a section data message; an MAC address forwarding table of a switch is obtained through a simple network management protocol (SNMP); the MAC address serving as a foreign key is matched with the two-dimensional table to generate a switch port-IED name table, so that topology recognition of the switch and the connected IED is finished, and graphic displaying is performed. Based on a common topology search method of the switch, the method achieves dynamic recognition of IED topology in a network and helps the operation management level of the intelligent substation network to be improved.

A comprehensive detecting and analyzing platform for performance of digital electric energy metering systems of intelligent transformer substations is provided with a detecting system and a background expert system. The detecting system comprises an electronic transformer detecting system, a digital/digital-value-input electric energy meter detecting system and a digital electric energy metering comprehensive performance detecting system. By the background expert system, real-time monitoring and value tracing can be simultaneously carried out for electronic/optical current transformers, electronic voltage transformers, digital/digital-value-input electric energy meters and the like, and electric energy data of analog systems and multiple digital systems can be compared and analyzed so that the comprehensive performance of each digital electric energy metering system is detected. Detection results are comprehensive owing to multiple signal acquisition channels and comprehensive consideration on metering risk points of the systems, and the comprehensive detecting and analyzing platform is beneficial to improving metering accuracy for the intelligent transformer substations and digital transformer substations, and provides a good technical support for constructing the intelligent transformer substations and the digital transformer substations.

The invention discloses a design and configuration integrated system for an intelligent substation, which is technically convenient for information management for the intelligent substation in design, construction, operation and maintenance stages to reduce workload for checking staff. The design and configuration integrated system is arranged in a personal computer which is networked with switches of an electric power designing institute, an intelligent substation construction organization, an electricity authority, an intelligent substation operating maintenance department and a secondary equipment manufacturer. The system is provided with an intelligent substation design drawings module, a configuration management module, a model base module, a drawings management module, a retrieval module, a permission management module, a verification module, a database module and a version management module. Compared with the prior art, the design and configuration integrated system has the advantages that design and configuration are integrated, risks of errors of design and configuration are lowered, design and configuration efficiency of the intelligent substation is improved while an effective secondary data management tool is provided for operation and maintenance, repeated operations are avoided, and workload is greatly reduced for the checking staff.

The invention discloses a dispatching automation digital physical hybrid simulation training system. A primary device is a power network simulation system, and a secondary device comprises a control center main station and/or an intelligent substation. The control center main station comprises a control system server, and the control system server is respectively connected with the intelligent substation and a digital physical hybrid simulation system. The digital physical hybrid simulation system comprises an interface portion and a simulation power network portion, the interface portion is provided with a station signal simulation terminal and a digital physical interface device, the digital physical interface device is connected with the intelligent substation, the simulation power network portion is provided with the primary device, and the primary device is respectively connected with the station signal simulation terminal and the digital physical interface device. A real operating environment is provided for simulation training by seamlessly connecting the secondary real device, a real dispatching automation system and the primary simulation device through the digital physical interface device.

The invention discloses a network online monitoring system for a transformer substation. The network online monitoring system comprises a network monitoring device, a monitoring plug-in component for a switchboard of the transformer substation and a monitoring plug-in component for network messages of the transformer substation; the network monitoring device is applicable to the intelligent transformer substation, and the monitoring plug-in component for the switchboard of the transformer substation and the monitoring plug-in component for the network messages of the transformer substation realize a network monitoring function; the network monitoring device comprises a special interface card for multiple network communication interfaces, a main CPU (central processing unit) control panel and relevant control and communication interfaces; the monitoring plug-in component for the switchboard of the transformer substation acquires a state of the network management switchboard and displays data warning and abnormity information in real time; the monitoring plug-in component for the network messages of the transformer substation acquires the network transmission messages of the transformer substation and displays message abnormity information and variation of data states of the messages in real time. The network online monitoring system has the advantages that the network online monitoring system can be used for monitoring and warning display for a communication state of a network in the intelligent transformer substation in real time, and important processed state information can be directly transmitted into the monitoring system for the transformer substation, so that the transformer substation can be monitored in a unified manner, and an effective solution is provided for problems of incapability of visually monitoring network information in an existing intelligent transformer substation in real time, difficulty in tracking procedure abnormality and difficulty in analyzing shortcomings of an intelligent device.

The invention discloses on-line monitoring networking of a power transformer of an intelligent substation. The on-line monitoring networking synthetically considers all on-line monitoring projects of a current power transformer, namely on-line monitoring of gas dissolved in oil and micro water, on-line monitoring of casing pipes, on-line monitoring of winding fiber temperature detection, on-line monitoring of partial discharging, on-line monitoring of iron core grounding currents, on-line monitoring of infrared temperature detection, on-line monitoring of vibration, on-line monitoring of transformer load capacity and the like. Basic configuration, technical parameters and the like of each monitoring project are comprehensively studied and ruled. According to the on-line monitoring networking of the power transformer of the intelligent substation, on-line monitoring technology of the power transformer of the intelligent substation is studied in detail, and all the monitoring principles and monitoring technology indexes of on-line monitoring units of all current and national transformers are studied in an omnibearing mode. A monitoring unit of the load capacity of the transformer is firstly raised and applied, and detailed study is performed on software functions of an on-line monitoring system. A set of complete and formal technical standards of the on-line monitoring system of the power transformer are set up for the intelligent substation.

The invention relates to a sharing modeling method of an intelligent substation and a primary station. In the method, panoramic data are converted into an object model in accordance with IEC 61850 standards by acquiring panoramic data which comprehensively reflect equipment states and operating states of the substation such as substation steady states, temporary states, dynamic data, equipment states, images and the like acquired by various sensors; a primary station primary equipment model in accordance with a substation secondary equipment model of IEC 61850SCL and IEC 61970CIM modeling standards carries out mutual conversion mapping to realize unified modeling of primary equipment and secondary equipment of an electric power system; and a GID open application program interface in accordance with IEC 61970GID standards is provided. With the method, the substation unifies and simplifies a data source of the substation to form unique basic information based on the same section; and the interaction of internal information and external information of the substation is realized by unifying standard modeling; the seamless sharing of plant station information of the intelligent substation and an automation system of the primary station are realized; and the information of a primary station terminal and a plant station terminal for scheduling is free from maintenance. The method is suitable for sharing modeling of the intelligent substation and the primary station.

The invention discloses a method and a device for testing the overall performance of an intelligent transformer substation. The method comprises the following steps of: by taking a secondary system of the intelligent transformer substation as a check object, checking a combination unit and a network switch of the intelligent transformer substation; by taking a primary main connecting wire of the intelligent transformer substation, and a line and a power supply which are linearly connected with the primary main connecting wire as objects, establishing a transformer substation simulation model; according to configuration and test requirements of an electronic transformer and switching equipment of the intelligent transformer substation, arranging an acquirer simulator and a switch simulator; by using a numerical value simulation method, acquiring a time domain simulation result of an object system; and under the control of a test control system, synchronously inputting test signals of the acquirer simulator into the combination unit, and uploading an intelligent operation box command which is received by the switch simulator to the test control system, so that checking of the functional accuracy of the secondary system of the intelligent transformer substation is finished. Based on a numerical value simulation technology, a wireless transmission technology and a network exchange technology, the invention has a true and reliable test result by validation.

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.

The invention discloses an electronic transformer amplitude and phase error checking system with a networked detection function. Specifically, the system receives analog data acquired by a standard transformer, and digital sampling value message data sent by the electronic transformer, adopts a self-adaptive algorithm based on equal interval sampling at different sampling frequencies and signal quasi-synchronous characteristics, and obtains the amplitude, phase error and other parameters of each channel by standardized calculation through comparison. The system provided by the invention can be used for amplitude and phase error checking of electronic voltage and current transformers of various types in an intelligent substation, and can realize the networked detection of single-path or multi-path electronic transformers and merge unit circuits without external synchronization signal pulse in the traditional testing scheme, so that the transformer testing system is simplified, the impact of tedious discrete functional testing work and testing blind points of a multiplexer is avoided, the testing time of equipment is shortened, and the detection efficiency of the electronic transformer is improved.