218 results about "Primary station" patented technology

The invention discloses a safety control method and system for an emerging control main body, and belongs to the technical field of power system active control, and the method comprises the steps: carrying out the bidirectional data interaction through a master station AGC and a field station AGC, and carrying out the bidirectional data interaction based on a bidirectional data interaction result and a cooperative anti-error parameter; whether the emerging control main body is in a controllable state or not is judged in real time through collaborative security locking logic; if the control main body is in the controllable state, active measurement data of the emerging control main body are obtained, and jump detection and multi-source checking are carried out on the active measurement data; after verification is passed, a pre-control instruction is generated based on the control strategy, and reasonability verification and control effect simulation verification are carried out; and after the control effect simulation verification is passed, the pre-control instruction is taken as a final control instruction to be issued to the emerging control main body for execution. The method can greatly improve the safety control capability of AGC on an emerging control main body, guarantees the frequency operation safety of a power grid, and improves the safe and reliable power supply capability of the power grid.

The present application relates to the technical field of network security. Disclosed are a software-defined-network-based cloud-edge collaborative defense system and method for unknown attacks. The system comprises a main station deployed at a cloud end and a plurality of edge stations deployed at an edge end. A software defined security platform comprises a main controller, a security controller and a security component resource pool. Any one of the edge stations comprises an edge controller. The security controller is configured to receive network security information uploaded by the main controller and / or any one of the edge controllers, identify an unknown attack on the basis of the network security information, generate a corresponding defense strategy and issue the defense strategy to the security component resource pool, the main controller and / or any one of the edge controllers. The security component resource pool is configured to virtualize a security protection function into a security component, and configure the main station and / or any one of the edge stations with the security component on the basis of the network security information or the defense strategy. The problem of traditional static and rigid defense measures and strategies being unable to meet the requirements for defending against unknown attacks is solved.

The invention discloses a control method of an electricity utilization information acquisition terminal with security situation awareness, and relates to the technical field of electricity utilization information acquisition. Multi-source state evaluation, command risk division, rule decision and execution feedback are no longer independent functions through operation modes, joint security state levels, control quotas, command risk levels, command quota state marks and mutual reference between local execution consistency indexes and collaborative domain execution consistency indexes. A technical system with a close coupling relationship is formed in the electricity utilization information acquisition terminal, so that the method is not only suitable for resident courts, special transformer users and important user scenes, but also capable of automatically updating operation mode definitions, safety state division thresholds, control quota parameters and safety control rules through version comparison after main station side strategy update messages are issued. And the terminal security control capability is continuously evolved along with operation experience and strategy adjustment, and a strong synergistic effect is embodied.

The invention discloses a network path switching method and electronic equipment, and relates to the technical field of data transmission. Network paths of at least two different protocols are configured between a main station and an auxiliary station, in combination with storage performance parameters and network performance parameters of a plurality of network paths, a future performance change trend is predicted by using a preset learning algorithm, and then the weight of each performance parameter is dynamically adjusted. Therefore, comprehensive scoring and optimal path selection of different network paths are realized, a better network path can be predicted and selected in advance before the network performance is reduced or a fault occurs, intelligent rapid switching among different protocol paths is realized, the technical problem of remote replication interruption caused by a single path fault is solved, and the network performance is improved. The technical effects of guaranteeing the continuity and consistency of data transmission and improving the reliability and efficiency of the remote replication network are achieved.

The invention relates to the technical field of fusion terminals, and particularly provides a fusion terminal data reporting missing rereporting method and system and a medium, and the method comprises the steps: through a reporting task initialization mechanism, when a fusion terminal is started or a task scheme and a table file change, emptying historical data and carrying out initialization again; adopting an acquisition scheme matching strategy based on the matching degree and the interrogation interval to accurately select a target acquisition scheme; in combination with a two-stage compensation mechanism of self-compensation and failure linked list compensation, compensation is scheduled according to protocol timeout in the self-compensation stage, and periodic compensation, forced compensation and redundant data cleaning are executed in the failure linked list stage. Through the above steps, the integrity and reliability of data reporting of the fusion terminal are effectively improved, and the accuracy of collection success rate statistics of the master station is guaranteed.

The invention discloses an Internet of Things networking scheduling method for railway tunnel disaster prevention illumination and evacuation indication, and relates to the technical field of railway tunnel disaster prevention. Comprising the following steps: S1, tunnel end monitoring equipment actively initiates environmental channel detection through a power line carrier communication network, scans impedance characteristics, noise levels and attenuation characteristics of different line sections in a tunnel, establishes a dynamic channel fingerprint database, and records an optimal communication frequency point and a channel quality threshold; and S2, performing real-time linkage between the local center monitoring main station and a fire alarm system, and after receiving a fire alarm signal, immediately generating a dynamic evacuation path through a disaster evolution prediction model according to a fire alarm position, a smoke diffusion state and a real-time channel state. The power line carrier communication module is utilized to actively perform channel detection and electrical parameter acquisition, a state channel fingerprint database is established, and fault diagnosis and state grading are performed based on the state channel fingerprint database, so that the overall reliability and maintainability of the scheme are improved, and the availability of equipment in a disaster is ensured.

The invention relates to a relay protection inspection system architecture and method based on cloud edge collaboration. The objective of the invention is to solve the technical problems of low automation degree and insufficient test coverage rate of the existing relay protection test. According to the technical scheme, the system comprises a cloud end and a side end, the cloud end is deployed on a wave recording master station, the side end comprises a relay protection device, edge wave recording equipment and an automatic testing device, and the resource advantages of wave recording networking of secondary equipment are utilized to be responsible for collection, preprocessing and real-time testing of local data; the relay protection inspection method comprises the steps of data acquisition, state pre-evaluation of the relay protection device, automatic testing and formation of a test report, a positive interaction mode of information exchange is formed between the master station and the secondary equipment through cloud-side cooperation, optimal use of equipment resources of the whole network is facilitated, and the service life of the equipment resources of the whole network is prolonged. And the overall analysis and fault early warning functions of the master station are enhanced, and real-time pre-evaluation, automatic testing and intelligent operation and maintenance of the equipment state are realized in combination with cloud computing, edge computing, an improved BP neural network and an evidence theory.

The application discloses a kind of ship's multiple propeller collaborative propulsion control method and system, it is related to ship automation control technical field.For by the control system of ship collaborative control multiple propeller to carry out ship propulsion, collaborative propulsion control method includes: obtaining the speed of ship, main station handle position and power station available power;Based on speed and main station handle position, identify the current navigation condition of ship;Based on the matching relationship of pre-set, obtain the operation mode matched with navigation condition;Based on navigation condition, operation mode and the switching control strategy between different navigation conditions of pre-set, available power of power station is distributed to multiple propeller, and the collaborative propulsion of ship is carried out.Such, by based on speed and main station handle position, identify navigation condition, and match operation mode, to distribute available power of power station to multiple propeller, improve the response speed of ship propulsion control, improve the adaptability to complex navigation environment, improve ship safety.

The invention provides a synchronous phasor measurement type power distribution automation device and a power distribution implementation method, and relates to the technical field of power distribution automation. The device comprises a circuit board which is divided into a core board, a main board, an analog signal measuring board, a liquid crystal screen adapter board, a keying display board, a power supply module, a residual pressure board, a power supply voltage measuring switching board, an indicating lamp board and a PMU board. The invention further comprises a power distribution implementation method, and wide-area synchronization, high-frequency and high-precision sampling functions are achieved. FXU grounding detection performance is substantially improved, neighborhood protection independent of a master station is realized, and accurate positioning, isolation and second-level self-healing of faults are automatically completed; a distributed intelligent FA function does not depend on a master station, a main line does not depend on stage difference cooperation, absolute selectivity of protection is achieved, minimum isolation of a fault section is accurately completed, and second-level power restoration of a non-fault section is accurately completed. The neighborhood protection makes up for the selective defect of over-current protection, and upstream and downstream switches of a fault point can be switched off nearby.

The application relates to the technical field of power distribution networks of power systems, and discloses a fault post-recovery control method for a power distribution network containing flexible soft switches, which comprises the following steps: after a fault occurs, the original main station converter is exited, the active power, the reactive power and the rated capacity of the remaining converters are collected to calculate the dynamic capacity margin, the electrical distance from each converter node to the load center of the system is calculated, the comprehensive score is obtained based on the capacity margin and the electrical distance weighting, the converter with the highest comprehensive score and the capacity margin greater than the preset threshold is selected as the new main station, and the control mode of the new main station is switched; the main station selection mechanism based on the comprehensive evaluation of the dynamic capacity margin and the electrical distance is used to quickly establish a stable voltage frequency reference for the power failure area, the load shedding penalty sub-target and the load hierarchical and phased recovery strategy are used to preferentially guarantee uninterrupted power supply for the first important load under the condition that the transfer supply capacity is limited, and the influence of power failure on sensitive users is effectively reduced.

The application discloses an implementation method suitable for a high-throughput satellite communication hybrid duplex system, which acquires double-network statistical basic data containing end station round-trip propagation delay distribution and phased array antenna transmission-reception switching characteristics; constructs a dual-coupling time planning mathematical model with original network and mirror network time window start and end time as optimization variables, and solves optimal time parameters under the conditions of satisfying physical constraints such as delay reachability, antenna switching safety and main station reception zero overlap; and the main station broadcasts time slot configuration instructions to cooperatively control all network end stations to perform hybrid duplex transmission-reception. The application also introduces a closed-loop feedback mechanism based on end station local observation, estimates delay drift by using network clock reference information, and corrects model input. The application realizes zero conflict hybrid duplex communication under complex physical constraints by converting static configuration into dynamic mathematical optimization solution, and improves satellite spectrum resource utilization rate and system operation stability.

The invention discloses a wide area measurement system abnormal data identification method, system and related device, and the method comprises the steps: carrying out the single electrical interval data abnormity identification of a single PMU at a plant station end, and obtaining a first abnormal data identification result; according to the first abnormal data identification result, when a certain measurement data in a single electrical interval is abnormal, comparing and identifying data anomalies of a plurality of PMUs at a plant-station end to obtain a second abnormal data identification result; if the same PMU is accessed to a plurality of electrical intervals on the same bus, performing wide-area level correlation comparison analysis on wide-area measurement system data at a master station end, and performing wide-area measurement system abnormal data identification through a power grid topology connection relation to obtain a third abnormal data identification result; and integrating the obtained abnormal data identification result, and obtaining an abnormal data identification result of the wide-area measurement system through collaborative analysis of a main station and a plant station. According to the method, the identification accuracy of the WAMS abnormal data is improved, and the work of diagnostic analysis of a master station is reduced.

The application discloses an improved method, system and medium for improving the reliability of wireless communication of a power distribution terminal. The method comprises: stopping the main station from sending services such as total calling, time, heartbeat, request link state and link test during remote control operation, and resuming the process after the remote control process is completed; adding remote control conditions for local discrimination by the power distribution terminal; extending the discrimination duration of communication timeout; and sending burst remote signaling and burst remote measurement messages occurring within a cycle time by separate packaging in units of cycle time, thereby improving information transmission efficiency. The application is dedicated to low signal areas and is compatible with IEC60870-101 protocol, and solves the low remote control success rate caused by hardware problems by using software modification; the terminal discriminates remote control conditions when the main station performs remote control operation, and effectively solves the remote control failure problem by adding a put-off constant value.

The invention discloses a plug-and-play system and method based on distributed resources of a power distribution network. The system comprises end equipment, a fusion terminal, an IP dual-mode communication module, a master station plug-and-play micro application and a property management platform. The end equipment is connected with the IP dual-mode communication module; the IP dual-mode communication module is connected with the fusion terminal; the fusion terminal communicates with the property management platform; the property management platform is connected with the main station plug-and-play micro application; according to the invention, the IP dual-mode communication module is introduced, a unique IP address is allocated to each device, a high-efficiency IP network transmission channel is constructed, high-real-time and high-bandwidth communication is realized, district intelligent device diversified protocols are borne, a fusion terminal is seamlessly accessed, plug and play is supported, the device can issue commands to a multi-terminal device in batches, and the communication efficiency is improved. And multi-service parallel communication of single-end equipment is supported, protocol conversion is simplified, and the real-time performance, the bandwidth and the concurrency capability of a communication network are remarkably improved.

The invention relates to the technical field of power utilization acquisition efficiency improvement, in particular to a power utilization acquisition efficiency improvement method based on dual-mode and broadband carrier communication, which comprises the following steps of: S1, acquiring multi-dimensional characteristic parameters in power line carrier communication, and preprocessing to output a characteristic set; s2, adopting an LSTM + Transform hybrid model to predict a channel quality change trend in the future 5-15 minutes according to the feature set, and outputting a prediction result; when the method is used, channel quality changes are predicted through deep learning, prospective parameter adjustment is achieved, and communication risks caused by passive adaptation are avoided; based on multi-factor collaborative decision-making of edge intelligence, multiple influence factors are comprehensively considered, and optimal communication mode selection is facilitated; dependence on a master station is reduced through local decision making of the edge nodes, and the response speed and the real-time performance can be improved; the technical bottlenecks of untimely dual-mode switching and uneven load distribution in the prior art are solved, and the adaptability and transmission efficiency of dual-mode communication are improved.

IO-Link master (20) having at least one IO-Link port (21) configured to be connected to an IO-Link port transceiver (11) of an interface (10) having an IO-Link port transceiver (11), at least one wireless transceiver (12, 12a, 12b) and a signal processing device (13) configured to provide a network between the IO-Link port transceiver (11) and the at least one wireless transceiver (12, 12a, 12b), characterized in that the IO-Link master (20) has a signal processing device (23) configured to provide a network between the interface (10) and IO-Link devices (40) connected to further IO-Link ports (22) of the IO-Link master (20).

The invention discloses an intelligent substation gateway machine service orchestration method and system. The method comprises the following steps: registering service instances of each node of a gateway machine, a monitoring host and a comprehensive application host in an intelligent substation into a gateway machine service pool and dynamically updating the service instances; when the master station sends a service request to the gateway machine, a dynamic service calling chain is formed according to service priorities, and service instances of the service calling chain are distributed to corresponding target execution nodes according to the priorities so as to execute services in combination with the monitoring host and the comprehensive application host; in the process of executing the service by the node, the node operation state and the service execution state are continuously monitored, and when the service execution is abnormal or interrupted, the service request is distributed to other nodes to realize quick service transfer or service termination. According to the method, dynamic discovery and registration of substation services, service scheduling based on resource optimization and timely migration of nodes during service faults can be realized, and technical support is provided for a scheduling master station to efficiently and reliably access station end data and functions.

The invention discloses a system and a method for testing current transformers among transformer substations. The system comprises a mobile master station unit, a plurality of field data acquisition units and a portable standard current transformer. All the units are synchronized to coordinated world time through a global navigation satellite system; the mobile master station unit sets future absolute trigger time, and realizes synchronous acquisition of secondary signals of the current transformer to be detected and the portable standard current transformer by multi-station hardware; based on a standard truth value obtained by a main station self-monitoring loop, amplitude correction factor and phase correction calculation is carried out on each substation signal, and error compensation is completed; furthermore, high-precision and traceable ratio error and angle error results are output through frequency adaptive interception, windowing interpolation spectrum analysis and uncertainty evaluation. According to the invention, power failure is not needed, synchronous, high-precision and traceable comparison of multi-station current transformers can be realized in a wide area range, and the reliability of a power grid metering and protection system is improved.

The communication method executed by the communication station (100) is a communication method executed by the communication station (100) of a network system including a plurality of communication stations (100) that perform communication connections, and includes a calculation step of calculating the sum of a value obtained by multiplying the value of the transmission period of an Announce frame including information indicating the priority of the communication station (100) in the network system by a value obtained by subtracting 1 from the number of communication stations (100) included in the network system, and the value of the transmission period of a Sync frame including time information indicating the time held by the communication station (100), as a synchronization completion time required for the communication station (100) to synchronize with the time indicated by time information distributed from a grandmaster station selected from the plurality of communication stations (100) from the start of the communication station (100).

The present invention discloses a method and system for collecting operation data of a palletizing robot based on a distributed message queue. The collection method specifically comprises the following steps: S1: collecting information; S2: storing the collected information in the substations of the control cabinets of each palletizing robot in the finished product warehouse, the auxiliary material warehouse, and the filter rod warehouse, and transmitting the collected information to the secondary master station of each warehouse through a wired network; the secondary master station of each warehouse collects operation data through a data collection module, and the collected operation data is collected at a server terminal through a publish / subscribe message queue service cluster provided by a distributed message communication management module, and the data integration module centrally stores the operation data collected by each palletizing robot at a database end through a buffer queue loop algorithm; S3: finally transmitting the processed operation data to a logistics central control room server through a 5G CPE or a wired network; S4: the logistics central control room server calculates the thread ratio occupied by each palletizing robot in the three warehouses according to the received information; and S5: determining the threads occupied by each palletizing robot.

The application discloses a kind of distributed cluster communication base station antenna dynamic adjustment methods, belong to wireless communication technical field, method includes: to each base station is screened, obtains high-quality base station;With any one high-quality base station in each high-quality base station as main station, other high-quality base station is substation, obtains the position of main station and the position of each substation, and the signal reception time delay difference of each substation relative to main station;According to the position of main station and the position of each substation, and the signal reception time delay difference of each substation relative to main station, the position of target signal source is acquired;Continuously acquire the position of target signal source;According to the position of target signal source that is continuously acquired, the motion state of target signal source is acquired;According to the position and motion state of target signal source, the antenna direction of each base station is adjusted, so that the antenna direction of each base station is directly opposite target signal source.This method can capture the position and motion state of target signal source, realize base station antenna dynamic adjustment, to improve the energy efficiency of distributed cluster communication.

The invention relates to a method and a system for detecting millisecond errors of a clock of an electric energy meter by a terminal, and belongs to the field of clock synchronization error detection. Firstly, a simulation meter used for simulating and realizing a real ammeter clock management function is constructed, and the simulation meter and a master station are deployed on the same hardware equipment, so that data interaction can be performed through a set communication protocol. When the terminal detects that a clock out-of-tolerance phenomenon occurs in the analog meter, an electric meter reference clock is sent to the analog meter, then the analog meter sends a current clock to the master station through a millisecond-level communication protocol, and then the master station calculates a clock error according to the current clock of the master station and the current clock of the analog meter. Since the simulation table sends the current clock to the master station through the millisecond-level communication protocol instead of transmitting the current clock through a physical interface, the interference caused by transmission delay is effectively reduced, and the millisecond-level time synchronization error is detected.

A communication method and a communication device, the method comprising: a first communication device sends first adding request information to a second communication device, the second communication device being an auxiliary station providing services for a terminal device; receiving first addition request confirmation information of the second communication device; receiving a master station key corresponding to a candidate master cell group configuration of the first communication device after receiving the first add request acknowledgement information; after receiving the master station key, the first secondary station key is transmitted to the second communication device according to the master station key. When the service master station of the terminal equipment is switched to the first communication device and the second communication device is kept, the second communication device can timely and accurately obtain the auxiliary station key under the condition that the first communication device provides service for the terminal equipment, so that the switched terminal equipment is ensured to still use a DC architecture, and the user experience is improved. High-speed data transmission is maintained, and the user experience is ensured.

The invention discloses a power system dynamic simulation device multi-device operation state snapshot shooting method and system, and relates to the technical field of power system dynamic simulation, and the method comprises the steps: configuring snapshot shooting parameters of a master station in a power system dynamic simulation device, and transmitting the snapshot shooting parameters to each slave station; calculating a local basic frame rate of the slave station according to the sampling rate of each sampling channel in the slave station, and determining a global basic frame rate of the master station; when the trigger condition is met, the slave stations are controlled to send a synchronous sampling request to the master station, and the master station is controlled to activate the slave stations to synchronously start data acquisition through high-real-time signals; based on a frame alignment mechanism, performing time synchronization processing on the power equipment operation data acquired by each slave station; and after compression processing is carried out on the power equipment operation data after time alignment, the power equipment operation data are transmitted to a master station for storage, and a multi-equipment operation state snapshot is obtained. According to the invention, the multi-equipment operation data of the dynamic simulation device of the power system can be accurately and synchronously acquired.

The present application provides a substation topology determination method and substation topology system, which relate to the field of power grid technology. The substation topology determination method is applied to the main station of the substation topology system, and the substation topology system also includes a multi-way topology loop, each of which includes a filter, a concentrator and a plurality of power terminals. The filter is electrically connected to the main station and the concentrator respectively, and the concentrator is also electrically connected to the plurality of power terminals. First, the filter is controlled to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto; then the filter is controlled to be unidirectionally conducted to receive the address packet sent by the concentrator, and the substation topology is determined based on the address packet, wherein the address packet includes the address of the concentrator itself and the addresses of the plurality of power terminals. The substation topology determination method and substation topology system provided by the present application have the advantage of being able to quickly determine the substation topology.

The utility model relates to a double loop network safety communication door opening and closing control device of a platform door control system, which comprises a platform door controller PEDC and a plurality of door control units DCU, and takes the platform door controller PEDC as an EtherCAT main station. The door control units DCU serve as EtherCAT slave stations to form an EtherCAT network, and communication is conducted between the platform door controller PEDC and the multiple door control units DCU through an FSOE safety communication protocol. The platform door controller PEDC comprises a PEDC A system and a PEDC B system, each door control unit DCU comprises a first processor and a second processor, the PEDC A system and the first processors of the plurality of door control units DCU form a first communication topological structure, the PEDC B system and the second processors of the plurality of door control units DCU form a second communication topological structure, and the first communication topological structure and the second communication topological structure form a second communication topological structure. The first communication topological structure and the second communication topological structure are independent of each other. According to the utility model, safe and reliable communication between the platform door controller PEDC and the plurality of door control units DCU is realized.

The invention relates to the technical field of electric power monitoring, and discloses a non-intrusive load identification terminal, which comprises a base, an upper shell, a power supply conversion module, a multi-dimensional data acquisition module, a data processing module, a data processing module, a data processing module, a data processing module, a data processing module, a data processing module and a data processing module, and is characterized in that the power supply conversion module is used for converting input three-phase high voltage into relatively low direct-current voltage required by equipment after filtering and voltage-stabilizing processing; the intelligent data processing module comprises a micro-processing unit which is used for judging the power state, sending a signal to a man-machine interaction unit for interaction, and uploading a basic parameter data set, a related calculation process and a calculation result to a main station through a communication unit. The topological unit is used for sending and identifying topological signals and transmitting real-time results back to a master station through the communication unit to draw a topological graph, and the storage management module is used for localized storage. According to the terminal, non-inductive deployment is realized, and the installation cost and the operation and maintenance complexity are greatly reduced.

A computer system includes a primary site having a primary volume, and having an instance that performs data processing related to input / output data, and a secondary site having a secondary volume, and having an instance. Remote copy is set up between the primary and secondary volumes, and the instance of the primary site transfers data input to or outputted from the primary volume to the secondary site, while the instance of the secondary site stores the transferred data in the secondary volume. The computer system further includes a specifications changing section that changes specifications of the instance of the secondary site when a failover switching process of switching a performer of the data processing from the primary to secondary site is performed, or when a failback switching process of switching the performer of the data processing from the secondary to primary site after the failover switching process is performed.

The invention provides an online nuclear power electric quantity report recovery method, an online nuclear power electric quantity report recovery system and a computer program product, which are suitable for the technical field of nuclear power electric energy management. Enabling the computer equipment to read load curve data stored in the electric energy meter through the special inductive probe, and enabling the computer equipment to obtain target historical data corresponding to the data defect time period of the electric quantity from the load curve data; the master station system can recover the online nuclear power electric quantity report based on target historical data; according to the method, the recovered ammeter data can be ensured to be accurate by using the preset time synchronization mechanism and the load curve data stored in the ammeter, so that the accuracy of the regenerated electric quantity report is ensured; therefore, the problem of data loss or abnormity caused by the acquisition device or communication fault in the nuclear power station networked electric energy charging system is solved, and the reliability and stability of the master station system are improved.

The utility model relates to cable fault early warning positioning technical field, and disclose a kind of high voltage cable whole life cycle fault early warning positioning device, the high voltage cable whole life cycle fault early warning positioning device, including system main station screen cabinet and the cable body to be monitored.The high voltage cable whole life cycle fault early warning positioning device, to realize the on-line monitoring of high voltage cable whole life cycle, guarantee the safe and stable operation of power system, by being provided with system main station screen cabinet, intelligent integrated management unit, voltage travelling wave acquisition unit, current travelling wave acquisition unit, circulating current acquisition unit, cable partial discharge acquisition unit, current travelling wave sensor, grounding circulating current sensor and high-frequency current sensor, to collect the transient state travelling wave and steady component of cable operation process, it is analyzed and handled, predicts operating condition, and provides alarm and fault diagnosis information to fault cable, the insulation state of cable is monitored, permanent fault is early warned.