75 results about "Station model" patented technology

The invention relates to a transformer station model construction method based on BIM and GIS. The method comprises the following step: firstly, determining the electric design scope of a transformer station to be constructed in model; secondly, obtaining parameter data and GIS image information of the transformer station to be constructed in model; thirdly, establishing a three-dimensional circuit design platform based on the BIM and GIS according to a B/S network configuration; fourthly, constructing a BIM model database in the three-dimensional circuit design platform based on the BIM and GIS through the parameter data of the transformer station, and carrying out space layout configuration according to the GIS image information; and fifthly, constructing a transformer station whole model through the combination of the space layout configuration and the BIM model database, and carrying out display, query, retrieval, positioning and safety management according to the transformer station whole model. Compared with the prior art, the transformer station model construction method has the advantages that the method is advanced, the coverage is comprehensive, the efficiency is improved, etc.

The invention relates to a safety and stability control system modeling method in power system dynamic simulation. The method comprises the following steps of: performing hierarchical modeling on the safety and stability control system in a hierarchical decomposition mode; simulating an operation mode, fault information and a control strategy by adopting a ladder logic diagram to obtain a main station model and a sub-station model; and connecting a safety and stability control system model and a primary system model to realize the close-loop dynamic simulation of a large-scale power system which contains the safety and stability control system model. By the method, various different action behaviors and control characteristics of the safety and stability control system in the large-scale power system can be simulated accurately; the defects that conventional simulation software cannot reflect the action behaviors of the safety and stability control system are overcome; postmortem analysis of complex and severe accidents can be performed; and the requirements of the large-scale power system dynamic simulation on the simulation of the safety and stability control system can be met.

The invention discloses a method for building a solar power station model through shade analysis. The method comprises the following steps of: acquiring terrain data, obstacle data and solar power module data; drawing a shadow distribution map; building an initial solar power station model; and analyzing and calculating shade after the model is built. In the method, according to the influence of terrain, buildings and other obstacles constructed by humans on a solar power module, optimal arrangement of the solar power module is achieved to ensure scientific layout and maximize conversion efficiency of the solar power module.

The invention discloses a design method for an intelligent transformer station model based on CAD (Computer-Aided Design) graph and model integration. According to the method, the design of a secondary loop and the generation of a model file of the intelligent transformer station are synchronously completed; a data object corresponds to the back of each entity, and the model can be operated by a graph, therefore, the consistency of the design of the secondary loop and the model file is ensured, and the problem that the traditional intelligent transformer station is not deep enough is solved; and synchronously the design of the transformer station model can be finished by designers not familiar with 61850 design details, the role and the function of a design organization are strengthened in the establishing of the intelligent transformer station, and the visibility in operation and maintenance of the transformer station is increased; furthermore, the method is combined with the habits of traditional designers and is used for performing graphical loop design based on an AutoCAD platform so that the operation of the designers is convenient; an IEC61970CIM model is used in a primary system to describe the model, therefore, the data supporting other applications can be exported, and the openness of the method is increased.

The invention discloses an operation method for safely applying a line protection device to a wind power station, which relates to the relay protection of a power plant and is provided aiming at solving the problem that the line protection device in the current system cannot meet the protective requirements of the wind power station very well. The operation method comprises the following steps of: firstly, establishing a real-time simulation model which is a virtual power grid environment, including fault points in a wind power station, a bus and transmission lines, a main transformer unit of a power generator, a current and voltage mutual inductor, an equivalent system and a simulation system; secondly; establishing an experimental detection platform including a real-time digital simulation work station, an RTDS (Real Time Digital System) real-time digital simulator, an analogue quantity output board card, a power amplifier, a line protection device, an analogue circuit breaker, a switch conversion device and a digital quantity input board card; and thirdly, accessing the line protection device to be detected to the power amplifier of the detection system, then connecting the line protection device with the analogue circuit breaker and carrying out various kinds of experiments. The experiment implemented by using the wind power station model and an onsite oscillograph of the wind power station can provide a real and accurate simulation environment so that validation possibility is improved, and therefore the line protection device to be detected can be safely used for the wind power station after detected.

The invention provides an intelligent telecontrol communication machine based remote data subscribing and releasing method. The remote data subscribing and releasing method includes the steps: acquiring data information generated from station equipment in a transformer substation and storing the data information in an RDB (relation model database); subjecting the data information to plenoptic modeling, acquiring CIM (common information model) files of all-station models, uploading the CIM files to a main scheduling station, analyzing the CIM files, selecting the data information to generate the same into subscribing files, subscribing the subscribing files to an intelligent telecontrol communication machine, analyzing the subscribed files, dynamically establishing a forwarding information table of subscribing information, and locally storing the forwarding information table prior to being disconnected. When the subscribing information is released, connection between the main scheduling station and communication is restarted, and the corresponding data information in the RDB database is transmitted to the main scheduling station according to the stored forwarding information table. By the technical scheme, efficiency and accuracy in subscribing and forwarding of the data information between the main scheduling station and the transformer can be greatly improved, and working efficiency and working quality of scheduling and operating of the power grid are improved.

The invention relates to a method for detecting matching property of all-station model files based on a promulgator/subscriber mode, comprising the steps: (1) the subscriber sends the self address information to the promulgator; (2) the promulgator reads version self-described information of a CID or SCD file in the device; if the version information is found out to be changed, the newest version information is sent to the subscriber; (3) after being received by the subscriber, the newest version information sent by the promulgator is analyzed and compared with the version information in real-time database; if the newest version information is changed, the older version information is firstly backup into historical database, and then the version information in the real-time database is updated; meanwhile, warning information is generated for prompting the change of the version, so that the process for detecting the matching property of the all-station model files is completed. The method is simple and convenient in operation, ensures the accuracy of the model files of devices in a transformer substation, and shortens the debugging period of the devices, thus being a detection method which can realize centralized management and accurate verification.

The invention provides a method and device for route planning of a school bus. The scale of data of route planning of the school bus can be effectively decreased. The method comprises the steps that coordinates of latitude and longitude of student home addresses and a school address are acquired; according to expected values of distances from students to stations and maximum values of distances from the students to the corresponding stations, a school bus stop station model is established; according to the established school bus stop station model, clustering is conducted on the longitude andlatitude of the student home addresses, and division information of school bus stop stations and student cluster belonging stations is acquired; and according to the acquired coordinates of the student home addresses and the school address and the division information of the school bus stop stations and the student cluster belonging stations, route planning is conducted. The method and device forroute planning of a school bus are suitable for route planning operations.

The invention discloses a transformer substation online secondary equipment standing book information acquisition method. According to the invention, content extension is carried out on an IEC61850 model of equipment such as a protection device, a measurement and control device and the like in the substation, and secondary equipment standing book information is written into a CID model and transmitted to a background monitoring system. The background monitoring system is upgraded, and the acquired secondary equipment standing book information is compiled into a monitoring system model through substation control level MMS communication. Through the technical scheme disclosed by the invention, the monitoring system can update transformer substation secondary equipment information in real time, all-station model integration is carried out on acquired single device information so as to generate a whole plant station secondary equipment model, the acquired information is provided for a power grid information system to use so as to realize overhauling assistance, operating assistance and asset life cycle management of a transformer substation, a panoramic model of the transformer substation and the equipment is constructed, and the informatization, automation and intelligentization level of the transformer substation can be improved.

The invention discloses a navigation information flow system simulating the operation of a satellite navigation system. The navigation information flow system comprises a spatial segment i satellite models, a ground segment k monitoring station models, a master station model, j injection station models, a satellite orbit simulation module and a scheduling planning service module, wherein the satellite models receive the ground navigation data, processes and sends navigation data to the monitoring station models when the related equipment is available, the satellite orbit simulation module calculates the visual satellite models of the monitoring station models and collects the observation data, receives the observational information of the visible satellite models when monitoring equipment is available and sends the observation information to a master control station when a communication network is available, the master station model receives the observation information and processes and generates navigation data information when the related equipment is available to dispatch to related injection station models, and the injection station models receive the navigation data information and sends the navigation data information to target satellite models when both the business-related equipment and the communication network are available.

The invention relates to a variable-parameter capacitance compensation equivalent modeling method for a wind power station of a constant-speed wind power unit at a fluctuating air speed, which belongs to the technical field of wind power generation, overcomes the defect of reactive power error existing in an equivalent model established at the fluctuating air speed by the conventional equivalent method and solves the problem of difficult calculation of a variable-parameter capacitance in the equivalent model established by the conventional variable-parameter compensation. A method for calculating the variable-parameter capacitance is given for two machine end reactive compensation modes respectively by using the reactive power error between variable-parameter capacitance compensation before equivalence and variable-parameter capacitance compensation after equivalence, so that the wind power station model is equivalent to a constant-speed wind power unit at a fluctuating air speed. Themethod is suitable for dynamic equivalent modeling of a large-volume wind power station at a fluctuating air speed and analysis of the influence of the large-volume wind power station on a power system. The wind power station equivalent model can be applied to the researches of synchronization problem of the wind power station, such as dispatching and balancing of wind power, the problem of stable frequency at a constant air speed, analysis of the stability of stationary voltage of the wind power station and planning and design of a wind power station access system.

Provided is a secondary safety measure visualization method of intelligent transformer station, which can resolve the technical problem of the prior art that the secondary safety measure of the relayprotection device maintenance at the site of the intelligent transformer station cannot be effectively executed and maintained. The secondary safety measure visualization method comprises the steps ofcollecting the work ticket of the secondary safety measure of the intelligent transformer station and preparing a secondary safety measure work ticket template; producing a visualized device and obtaining the transformer station configuration description file SCD of the present version, and analyzing SCD information; connecting to an intelligent electronic device IED with the visualized device, and establishing an intelligent electronic device IED model based on the SCD information, and improving the intelligent transformer station model; conducting visualized display of the execution state of the work ticket, and checking the report control block and data set state and related data of the transformer station. The invention is advantageous in that the work ticket flow is standardized; maintenance time is shortened; labor productivity is raised; the examination and detection workload of the protective device and the secondary loop can be reduced; the problem of incomplete or excessivesafety work can be prevented.

A three-dimensional informatization modeling method for a transformer station is characterized by comprising the following steps: forming a transformer station object foundation database; establishing pipeline, electric, heating and ventilation, and equipment component information databases; establishing a basic three-dimensional model according to a total station arrangement; establishing an informatization relation rule according to a transformer station design code; and forming complete three-dimensional informatization transformer station model data. The three-dimensional informatization modeling method for the transformer station provided by the invention can fast and visually retrieve various types of document data information data through the three-dimensional model. Compared with a conventional common three-dimensional model, the three-dimensional informatization modeling method for the transformer station is accompanied with a variety of information content other than three-dimensional visual expression. The three-dimensional informatization modeling method for the transformer station takes the three-dimensional informatization model as a center, provides application for the retrieval of various types of engineering data information and a transformer station informatization operation system, and provides convenience for a three-dimensional digitized information management platform for the transformer station.

The invention discloses a model center construction method among heterogeneous scheduling systems based on agency service, comprising: constructing a model service agent architecture based on on-demand sharing; and creating a bidirectional subscription issue method based on a plant-station model version, a model center model maintenance privilege management method, and a heterogeneous scheduling subsystem and model center area model comparison method. A model center can realize power grid model distribution and maintenance and whole network instant sharing of whole network physical model consistent storage, solve the problems of complex flow, poor instantaneity, incomplete splicing data, poor expansibility, etc. of a distributed modeling method of forming a large power grid model in a model splicing mode, and guarantee great consistency of each power grid model connected to a model center system. The model center construction method among heterogeneous scheduling systems solves the problems of model fusion, interaction efficiency, security and model partition maintenance in the construction of a model center among heterogeneous scheduling systems.

The invention relates to a central heating system modeling method considering pipe network heat accumulation benefits and belongs to the field of multi-energy coupling system modeling. A central heating system model comprises four sub-models including a cogeneration unit model, a circulating water pump model, a heat exchange station model and a power supply network model, and each sub-model is formed based on corresponding constraint conditions. In the established model, the time quasi-dynamic property of a heat supply pipe network is considered, so that the heat storage property of the heat supply pipe network can be well reflected. The established model is suitable for being applied to heat supply network and power grid combined dispatching decision making.

The invention discloses a multi-type energy storage configuration method for a comprehensive energy system, and the method comprises the steps: building a comprehensive energy system standby market operation mechanism, and building a system standby value model; constructing an energy station model for the comprehensive energy system, and constructing a comprehensive energy system model comprisinga heat supply network model, a gas network model and a power grid model; establishing a comprehensive energy system multi-type energy storage site selection model considering the system standby value;and establishing a comprehensive energy system multi-type energy storage capacity optimization model considering the cycle life. The system operation mode and the system standby value are considered,and the flexibility and the standby capacity of the system can be fully mined. Considering the operation mechanism that the energy station participates in the standby market and establishing a systemstandby value model are beneficial to analyzing the influence of energy station standby on the whole system. Considering the power storage, gas storage and heat storage multi-type energy storage siteselection optimization model and the capacity optimization model is beneficial to obtaining the optimal capacity configuration scheme.

The invention discloses an undercurrent line selection test system based on PSCAD closed loop technology, which comprises a typical transformer station model built by taking a PSCAD simulation software as the platform, a simulation control module for a lot of fault models and an active undercurrent grounding line selection apparatus effect model, a data processing module, a signal transmission module, a signal amplification module, a test feedback module and a result analysis module, wherein the test system has the advantages of high simulation result fitting degree, wide popularization and simple operation, and according to the test system, a lot of automatic simulation tests can be done; and the test result can be analyzed and evaluated based on real need.

The invention relates to a multistage voltage control partitioning method for grid connection of an electric automobile charge, discharge and storage integrated station. The method comprises the following steps: 1), establishing an electric automobile charge, discharge and storage integrated station model; 2), defining an electrical distance controlled by a reactive power source from the perspective of a reactive power source; 3), establishing a weight CS multi-target module degree index for evaluating voltage control partitioning quality; 4), performing multistage step voltage control partitioning; and 5), performing multi-scene optimization on different function behaviors of the electric automobile charge, discharge and storage integrated station. Compared to the prior art, the method has the following advantages: a high-dimension cluster problem is effectively handled, the problem scale is reduced, and a high-quality partition scheme is obtained through an algorithm by quite high calculation efficiency.

The invention discloses a lateral inlet pump station model test rectification method. The method comprises the steps of 1: setting lateral inlet pump station forebay regulation measures; 2: building aphysical model according to a set scheme; 3: building a mathematic model according to the set scheme and performing calculation; 4: performing comparative analysis on a physical model calculation result and a mathematic model calculation result; and 5: comprehensively analyzing a scheme calculation result to obtain an optimal lateral pump station forebay regulation scheme. The improvement of a water inlet flow condition of a pump station can effectively improve the running performance of a water pump, reduce the sediment accumulation, improve the running reliability and economy of the pump station, reduce the cost and increase the benefits.

The invention discloses a grid-connected monitoring and evaluation method and system of a photovoltaic power station. The method comprises the following steps: a photovoltaic power station model is formed in an RTDS real-time simulation platform; performance tests are performed on the photovoltaic power station model; Testing the low voltage ride-through capability of the photovoltaic power station, testing the voltage/frequency response characteristics of the photovoltaic power station, testing the active power output characteristic of the photovoltaic power station, testing the active power/reactive power control ability of the photovoltaic power station, testing the islanding prevention protection characteristic of the photovoltaic power station, and characterizing the test result of the power quality test of the photovoltaic power station to obtain corresponding test eigenvalues; Each test eigenvalue is inputted into a pre-trained machine learning prediction model to predict and obtain a grid-connected monitoring evaluation score result of the photovoltaic power station. The implementation of the invention can score the advantages and disadvantages of the designed photovoltaicpower station model, thereby realizing the overall evaluation of the photovoltaic power station model.

The invention relates to the field of traffic engineering, and discloses a layout, traffic control and transfer plan of a 'one way-one line' mode intersection in a public transport system. The layoutincludes the layout of transfer stations (8-station model), the layout of an entrance lane and an exit lane for buses, the layout of the entrance lanes and the exit lanes for straight running, left turn and right turn of social vehicles, the layout of a non-motor vehicle lane and the layout of a sidewalk. Traffic signal control is also called phase scheme, and the key point is to incorporate right-turn traffic into unified control. Based on the layout, a 4-phase control scheme is adopted, so that the aim of no conflict between dynamic timing and traffic flow can be fulfilled, namely, no mutualconflict exists when six traffic flows in one phase pass through the intersection. Moreover, no mutual conflict exists between pedestrians and right-turn traffic as well as between the pedestrians and non-motor vehicles not crossing a zebra line. The main feature of the transfer line is to transfer without zebra crossing, thereby saving the transfer time. The problem of inconvenience in transferat the intersection in the 'one way-one line' mode is solved, and the safety and traffic capacity are enhanced.

The invention relates to a new-energy power plant model error positioning method and device. The method comprises steps of: establishing an element carrier model of an equivalent external system according to the measured data of a new-energy grid-connected point, a feeder collection point and a dynamic reactive power compensation device; injecting the measured data into the element carrier model of the equivalent external system and creating a new-energy power plant model according to the model; simulating field disturbance to obtain the simulation data of a wind power plant and the grid-connected point of a PV power station under the disturbance; determining a deviation value according to the measured data and the simulation data, and calibrating the new-energy power plant model according to the deviation value in order to determine the position of a parameter error source of the new-energy power plant model. The new-energy power plant model error positioning method and device can accurately and completely position the errors of the wind power plant and the PV power station model, avoid errors of external system modeling, and greatly reduce modeling workload.