2817 results about "Smart substation" patented technology

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.

The invention discloses an intelligent substation based on sensors, a communication network and an expert system. The intelligent substation comprises a substation automation system, a primary equipment condition monitoring system and an intelligent auxiliary control system. The intelligent substation is characterized in that the real-time data of equipment operation are acquired by additionally installing various sensors, the IEC61850 standard is utilized to realize information modeling of the sensor data, a communication network is utilized to build a physical channel for information transmission, and advanced application of the substation automation system and intelligent monitoring and linkage of the primary equipment condition monitoring and auxiliary systems are realized by a background expert system, thus realizing intelligent operation and patrol functions of the substation; the sensors include an all-fiber electronic current transformer, a capacitive voltage divider type electronic voltage transformer, a primary equipment condition monitoring sensor and an internet sensor with an auxiliary system things; and the advanced application of the substation automation system includes sequential control, equipment condition visualization, intelligent alarm, distributed condition estimation, substitution function and the like. Intelligent operation and patrol functions of the substation can be realized.

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 wearable augmented reality-based bidirectional intelligent inspection system and method of a substation. The system comprises wearable augmented reality intelligent glasses, an intelligent mobile terminal and a remote background terminal, wherein the wearable augmented reality intelligent glasses are used for photographing, recording and scanning two-dimensional codes for data information collection, selectively displaying required information in real time through gesture or voice operation and wirelessly transmitting the collected data information to the intelligent mobile terminal; the intelligent mobile terminal is used for building wireless connection with the intelligent glasses and the remote background terminal, receiving data information collected by the intelligent glasses and uploading the data information to the remote background terminal; the remote background terminal is used for analyzing and processing the received data information, storing historical data information and dispatching the data information of to-be-inspected equipment; and the intelligent mobile terminal and the remote background terminal achieve data information interaction through a power 4G wireless private network, so that the security and the instantaneity of inspection work are improved and the intelligent substation is promoted to achieve the comprehensive automatic development process.

The invention discloses a method and a system for automatically testing the relay protection function of an intelligent substation. The simulation system of the entire substation is realized in the mode that a simulation host machine is used for controlling digital relay protection and testing devices, a testing environment is provided, closed-loop testing on intelligent equipment is performed, the intelligent equipment with any scale of the substation can be tested in the mode that the simulation host machine is connected with the digital relay protection and testing devices, when tested equipment is added and the existing simulation system cannot meet the testing scale, the relay protection and testing devices in cascade connection are added to meet the testing requirement for intelligent equipment with larger scale, and besides, testing for a plurality of intelligent equipment can be realized, and the application prospect is better.

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 relates to a wireless intelligent sensor network system for monitoring states of intelligent substation devices. The system is overall divided into a transformer substation level state monitoring system and a dispatching center level state monitoring system, the transformer substation level state monitoring system is divided into a sensing layer, an accessing layer and an application layer, an intelligent sensor on the sensing layer is responsible for collecting image and scalar data, and transmitting information to a monitoring center platform on the application layer through the accessing layer, and key information is transmitted to a dispatching center monitor integration platform through an electric power data communication network. A self-organization and self-recovery wireless substation device monitoring network is established to replace traditional wired ways, so that hierarchical distribution co-processing of data is achieved, communication load balancing capacity of the monitoring network is improved, wiring difficulties of installation are reduced, installation costs of transformation and upgrade of the substation devices are reduced, flexibility and use ratio of the monitoring network system are enhanced, overall assessment of operation conditions of the substation devices is enhanced, and fault hidden dangers of the devices can be timely found and eliminated.

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 relates to an intelligent transformer substation cloud system which is characterized by comprising an intelligent transformer substation information convergence layer, a database, a cloud service platform and intelligent transformer substation basic applications. The intelligent transformer substation information convergence layer collects a large number of real-time data collected and generated in the operational processes of intelligent transformer substations and massive historical data accumulated in the long-term service development processes of the intelligent transformer substations, and transmits the data to the database to respectively conduct storage and processing on the real-time data, conduct cloud storage and processing on the historical data, and conduct failure diagnosis and showing. The real-time data stored by the database and the historical data stored by the database are called by the cloud service platform and respectively used for conducting dispatching management, monitoring and calculation on the intelligent transformer substations. The several basic applications are achieved in the intelligent transformer substations on the basis of the cloud service platform. The intelligent transformer substation cloud system can be widely applied to the intelligent transformer substations.

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 provides a self-diagnosis method of a network sampling and control link of an intelligent substation. The method comprises the following steps of conducting IEC61850 communication protocol analysis; controlling an active diagnostic test of the link, and then finding out network faults; conducting network fault diagnosis based on an SNMP; conducting network fault management. The invention provides the self-diagnosis method of the network sampling and control link of the intelligent substation. The self-diagnosis method can timely find out various network faults of network operation, conduct positioning and eliminating on the faults, conduct management and recording on the network fault information, further ensure the reliability and safety of the application of network sampling and network control in the substation, and improve the intelligent level of the substation.

The invention discloses a device for detecting a secondary virtual loop of an intelligent transformer substation. The input end of a configuration file reading module is connected with the output end of a background of the intelligent transformer substation; the input end of a configuration file analysis module is connected with the output end of the configuration file reading module; a digital signal generator is respectively connected with an intelligent equipment acquisition card and an intelligent operating box; the output end of the intelligent equipment acquisition card is sequentially connected with an intelligent transformer substation combination unit and an industrial switch; the output end of the intelligent operating box is connected with the industrial switch; the output end of the industrial switch is connected with the input end of a photoelectric converter; and the output end of the photoelectric converter is connected with the input end of a virtual loop detection module. The invention also provides a method for detecting the secondary virtual loop of the intelligent transformer substation. The invention has the advantages that the secondary loop connection performance of the whole transformer substation can be comprehensively detected, the motion accuracy of the secondary equipment of the transformer substation is ensured, technical basis is provided for checking, reforming and improvement of a transformer substation automatic system and the secondary equipment, and the safety production and steady operation of a power grid are facilitated.

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.