CN114841385B - A generation system for visual maintenance preview of power grid - Google Patents

Abstract

The invention discloses a generation system for visual overhaul previewing of a power grid, which comprises the following components: visualization core module: the GIS graphic module is used for responding to the user event and displaying the GIS graphic module; topology analysis core module: the method comprises the steps of analyzing GIS graphic model files, and converting the relation between terminals and connection points of GIS graphic models into DAG directed acyclic graphs; and (3) an overhaul previewing module: the simulation system comprises a simulation implementation unit, an influence range analysis unit and a visualization implementation unit, wherein the simulation implementation unit is used for analyzing maintenance isolation points and simulating a transfer scheme in a DAG directed acyclic graph, the influence range analysis unit is used for analyzing an influence range, and the visualization implementation unit is used for interacting with a visualization core module and a user terminal to visually display the transfer scheme and the influence range. According to the technical scheme, fault equipment can be rapidly positioned in a visual mode, overhaul operation is simulated, a power grid risk is efficiently and accurately estimated by an auxiliary dispatcher, a power supply protection dispatching emergency treatment system is rapidly generated, and power supply guarantee is improved.

Description

A system for generating visual maintenance preview of power grid

Technical Field

The present invention relates to the field of power distribution in the electric power industry, and in particular to a system for generating a visual maintenance preview of a power grid.

Background technique

In the current social development process, the requirements for power supply stability are getting higher and higher. When carrying out grid risk analysis, dispatching emergency disposal and other work, each power supply bureau needs to summarize and statistically analyze the 10kV outgoing line single line diagram in the automation system, the important user and line information in the marketing management system, and the ring network information in the GIS system distribution line. However, due to the relative independence of each system and the abstract line structure, manual processing and manual analysis are often required, and then processing is based on personal experience, which is inefficient, time-sensitive, and inaccurate. Moreover, in the absence of information and automation support, it is very easy to miss monitoring, misjudgment, and handling errors, which will bring major risks and even huge losses to the power grid company. Especially now that there are a large number of key customers in the power grid, under the heavy task of power supply protection and high pressure of each power supply bureau, it is necessary to predict the risks of the power grid and carry out emergency preparations, and dispatch and transfer supply in a timely and accurate manner in the event of an accident to ensure the high reliability of the power supply system.

Summary of the invention

To achieve the above objectives, the present application provides a system for generating a visual maintenance preview of a power grid, comprising:

Visualization core module: used to respond to user events and display GIS models;

Topology analysis core module: used to analyze GIS model files and convert the relationship between terminals and connection points of GIS model files into DAG directed acyclic graphs;

Maintenance rehearsal module: includes a simulation implementation unit, an impact range analysis unit, and a visualization implementation unit. The simulation implementation unit is used to analyze the maintenance isolation point and simulate the power transfer plan in the DAG directed acyclic graph. The impact range analysis unit is used to analyze the impact range. The visualization implementation unit is used to interact with the visualization core module and the user terminal to visualize the power transfer plan and the impact range.

The visualization core module loads and expands SVG graphics based on the browser to implement browser-based mouse control. The operations implemented by the mouse control include processing parameters of the maintenance preview function.

Furthermore, the topology analysis core module includes a file processing unit and a topology analysis unit;

The file processing unit is used to read the GIS map file, convert the GIS map file into a document object, obtain the device elements from the document object, group and process the device elements, and construct a directed acyclic graph.

Furthermore, the topology analysis unit is also used to implement full-graph topology analysis and obtain the relationship between device elements.

Among them, the maintenance preview module is also used to parse user instructions and obtain the specified maintenance equipment elements;

Furthermore, the simulation implementation unit includes a power transfer plan generator, which calculates the nearest maintenance isolation point, determines the maintenance isolation range, and generates a power transfer plan based on the maintenance equipment elements.

Furthermore, the simulation implementation unit simulates the execution of the power transfer plan, updates the power status in real time, and analyzes the power outage distribution transformer based on the simulation results.

Furthermore, the impact range analysis unit interacts with the marketing system, obtains related user files according to the maintenance isolation point, and outputs the power outage impact range; the impact range analysis unit accesses the OCS distribution transformer operation record and outputs the distribution transformer impact range.

Among them, the steps of the power transfer plan generator to generate the power transfer plan are: generating power-off operation steps and power-on operation steps, and grouping the power-off operation steps and power-on operation steps according to the ring network interconnection switch to form a power transfer plan.

Furthermore, the user instructions also include: marking as maintenance equipment, marking as power supply guarantee, disconnecting the switch, closing the switch, finding equipment, maintenance rehearsal, resetting the single-line diagram; wherein finding equipment includes finding outgoing lines and ring network switches.

Furthermore, the equipment elements of the GIS model file include outgoing line switches and tie switches, and terminal lists;

Among them, the attributes of the terminal list include: the dimension identifier id of the terminal list, the identifier mrid of the terminal, the serial number sequenceNumber that identifies the left and right sides of the device respectively, the main device type conductingEquipment, and the mounted node connectivityNode.

According to the present invention, power grid domain data such as distribution network, GIS, OCS, and marketing system can be integrated to build a GIS map network topology model, provide user interaction, quickly locate faulty equipment in a visual way, simulate maintenance operations, assist dispatchers in efficiently and accurately assessing power grid risks, quickly generate a power supply dispatching emergency response system, and improve power supply security.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a structural diagram of a system for generating a visual maintenance preview of a power grid according to an embodiment of the present invention;

2 is a schematic diagram of class definition of GIS model terminals in a generation system for visual power grid maintenance preview according to an embodiment of the present invention;

3 is a diagram showing the steps of topology analysis in a generation system of a power grid visual maintenance preview provided in an embodiment of the present invention;

4 is a functional schematic diagram of a system for generating a visual power grid maintenance preview according to an embodiment of the present invention;

FIG5 is a schematic diagram of a user interaction function in a system for generating a visual power grid maintenance preview according to an embodiment of the present invention.

Detailed ways

The present invention provides a solution for visual maintenance rehearsal of power grid based on GIS graph model topology structure, which integrates power grid domain data such as distribution network, GIS, OCS, marketing system, etc., constructs a GIS graph model network topology model, quickly locates faulty equipment in a visual way, simulates maintenance operations, assists dispatchers to efficiently and accurately assess power grid risks, and quickly generates a power supply dispatching emergency response system.

The generation system of the visual maintenance preview of the power grid of the present invention comprises three parts in terms of bottom-level implementation: a visualization core module, a topology analysis core module and a maintenance preview module.

The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

Figure 1 is a diagram of the system structure for generating a visual maintenance preview of a power grid. The various parts are described in detail as follows:

P110 visualization core module: used to respond to user events and display GIS models.

The user events it supports include responding to mouse single and double clicks, right clicks, calling up menus after responding to mouse events, dragging graphics, and zooming in and out.

The visualization core module is a functional module that implements graphics processing based on a web browser. By loading svg graphics technology and using programming languages such as JavaScript, it can expand svg graphics and add animation effects to multi-segment nodes and path nodes in the GIS map network topology model to achieve the technical purpose of intuitively feedback the energized state of the line.

The functions implemented by the visualization core module include:

1) Expand SVG graphics, add hotspots to the elements of the GIS network topology model, such as use, polyline and path nodes, and register click events and right-click menus to the hotspots, so that SVG graphics can be interactive and realize mouse control based on the browser page. Among them, the more important function is that the user's right-click menu operation can process the parameters of the maintenance preview function;

2) Collect device information (metadata) in the SVG graphic. This information is used to retrieve the location of the device in the current SVG graphic. When the user enters the device ID or device name and initiates a search, the visualization core adjusts the viewport to display the device based on the device information and highlights the device;

3) Implement interactive functions such as graphics zooming and dragging.

P120 topology analysis core module: used to analyze GIS model files and convert the terminals and connection point relationships of GIS model files into DAG directed acyclic graphs.

The topology analysis core module includes a file processing unit and a topology analysis unit;

1) The file processing unit is used to read the GIS map XML file, convert the file into a document object, obtain the device elements from it, and define and process the attribute characteristics of the device elements through programming language. For example, through query, the list of outgoing switches, contact switches, and terminals is obtained, and these device elements are grouped, matched with primitives, and laid out to construct a directed acyclic graph.

Figure 2 describes the class definition of GIS model terminals. The structure of this class includes at least the following five attributes: the dimension identifier id of the terminal list, the terminal identifier mrid, the serial number sequenceNumber that identifies the left and right sides of the equipment, the main equipment type conductingEquipment, and the mounted node connectivityNode. It also supports various protocols and custom protocols. For example, the conductingEquipment #SWITCH_00010102020012 represents a switch with a gisid of 00010102020012.

After the file processing unit extracts the terminal list object, it groups them according to the main device type and the mounted node, and obtains two Terminal objects, which are defined as: nodeMap and equipmentMap.

For outgoing line switches and tie switches, a directed acyclic graph is constructed with the left and right sides as the starting positions. Since each switch has a left and right side, 2N directed acyclic graphs will eventually be formed. This can solve the problem of uncertain power supply direction and the uncertainty of the front and back ends of tie switches;

2) The topology analysis unit further processes the objects obtained by the file processing unit. The typical steps to implement the function are shown in Figure 3. Starting from device A, use gisid to obtain all its Terminals (the number is 1 or 2) from equipmentMap, exclude Ta1 in the starting direction, use connectivityNode of Ta2, and obtain Tb1 and Tc1 mounted on Node from nodeMap. Since Tb1 contains gisid of device B and Tc1 contains gisid of device C, it is only necessary to recursively perform the above steps and merge the results to complete the topology analysis of the entire graph.

When performing topological analysis, devices are recorded as vertices of a directed acyclic graph, for example, device A is recorded as vertext_A, device B is recorded as vertext_B, and device C is recorded as vertex_C. The device sequence is stored in the edge of the directed acyclic graph, for example, Edge_AB represents an edge analyzed from device A to device B, and Edge_AC represents an edge analyzed from device A to device C. After the analysis is completed, the relationship between all device elements in the entire graph can be obtained, such as the ancestor-descendant relationship.

It can be seen that converting the relationship between GIS model terminals (Terminal) and connection points (ConnectivityNode) into a DAG directed acyclic graph (topology data) greatly improves the efficiency of equipment relationship analysis.

On the other hand, the custom directed acyclic graph vertex model uses the device type and GISID to calculate the vertex hash value, which helps to quickly locate the device in various directed acyclic graphs.

P130 maintenance rehearsal module: includes P131 simulation implementation unit, P132 impact range analysis unit, and P133 visualization implementation unit. The simulation implementation unit is used to analyze the maintenance isolation point and simulate the power transfer plan in the DAG directed acyclic graph. The impact range analysis unit is used to analyze the impact range. The visualization implementation unit is used to interact with the visualization core module and user terminal to visualize the power transfer plan and impact range.

In the specific implementation, the maintenance preview module first parses the user instructions and obtains the specified maintenance equipment elements through the area marked by the user.

The simulation realization unit includes a power transfer plan generator, which calculates the nearest maintenance isolation point, determines the maintenance isolation range, and generates a power transfer plan based on the maintenance equipment elements;

The steps for generating a transfer plan by the transfer plan generator are as follows:

1) Analyze small hydroelectric power stations and photovoltaic power stations within the isolation range and add power-off operation steps;

2) Analyze the possible power supply solutions for equipment outside the isolation range and generate power restoration operation steps;

3) Analyze the line on the opposite side of the ring network and add power restoration operation steps;

4) According to the ring network interconnection switch, the power-off operation steps and the power-on operation steps are grouped to form a power transfer plan.

The simulation realizes that each step of the power supply transfer scheme generated by the unit module is simulated and executed in sequence, and the live state is updated in real time in the DAG directed acyclic graph. Based on the simulation results, the power outage distribution transformer situation is analyzed, and a link to quickly locate the power outage distribution transformer is provided. The visual representation of the live state is updated in real time, including the color change of different graphics, such as the conversion between red and green; including the graphics change of switches, such as replacing the switch in the open state with the switch in the closed state.

The maintenance rehearsal module provides users with analysis information including the impact range of power outages. In the specific implementation process, the impact range analysis unit interacts with the marketing system, obtains related user files based on the maintenance isolation point, and outputs the impact range of power outages in combination with the power outage distribution transformer summary; the impact range analysis unit also accesses the OCS distribution transformer operation record to output the impact range of the distribution transformer. When there are sensitive users and important users, the system will display prompt information.

The implementation solutions provided in the above content generate a visual maintenance rehearsal system.

FIG4 is a functional schematic diagram of the user interaction interface of the generation system of the power grid visual maintenance preview, as shown in the figure:

The P410 area is a list of switches related to the power-off steps, and provides a user interaction button for a one-touch "disconnect" operation;

The P420 area is the specific steps of the power transfer plan. As shown in the figure, the "close" operation is performed on the #14 switch of the South Ring II line. The corresponding area is shown in the P440 area. Among them, P441 is the #14 switch of the South Ring II line, which is in the disconnected state, and P442 and other switches are in the closed state. In this system, the power-on status can be displayed by color. For example, green is often used to indicate power failure, and red is used to indicate power. Different colors are used to intuitively display the power-on status of the line.

The distribution and users affected by the power outage area are listed in the P430 area in the form of a list, and the number of affected users can be calculated and the loss load can be estimated.

The P450 area of FIG4 shows the user interactive search functions provided by the embodiment of the present invention, such as searching for equipment, maintenance preview, and resetting the single-line diagram. The user interaction method also supports the function area popped up by the user's right mouse button, as shown in FIG5, providing functions such as marking as maintenance equipment and marking as power supply guarantee, as well as basic functions such as clearing all marks and viewing line/equipment operation information. Depending on the specific situation, the function of judging whether it is currently valid or invalid is open to the user.

The generation system of visual power grid maintenance rehearsal provided by the present invention integrates power grid domain data such as distribution network, GIS, OCS, and marketing system, and summarizes and statistically analyzes data such as 10kV outgoing line single line diagram in the automation system, important user and line information in the marketing management system, and ring network information in the GIS system distribution line according to the rules, thereby avoiding the disadvantages brought by manual processing, such as time-consuming, error-prone, and high requirements for personnel; at the same time, the present invention displays the energized status of the equipment in real time in a fully automated and visualized manner, sets the maintenance rehearsal of the faulty equipment with one key, and clearly displays the maintenance and power transfer operation steps, impact range, and risks caused, making the abstract power grid data clear, intuitive, and controllable. Through the generation system of visual power grid maintenance rehearsal of the present application, the staff is assisted to efficiently and accurately assess the risks of the power grid, and quickly generate emergency response plans for power supply dispatching, which greatly improves the work efficiency of the power grid staff, ensures timeliness and accuracy, and improves the management level of the power system.

The above disclosures are only several specific embodiments of the present invention; however, the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims (6)

1. A system for generating a visual maintenance preview of a power grid, characterized by comprising: Visualization core module: used to respond to user events and display GIS models; the visualization core module loads and expands svg graphics based on the browser, and realizes browser-based mouse control. The operations realized by the mouse control include processing parameters of the maintenance preview function; Topology analysis core module: used to analyze GIS model files, and convert the relationship between the terminals and connection points of the GIS model into a DAG directed acyclic graph; wherein, the topology analysis core module includes a file processing unit and a topology analysis unit; the file processing unit is used to read the GIS model file, convert the file into a document object, obtain the device elements and attributes therefrom, and define and process the attribute characteristics of the device elements through a programming language; the device elements include outgoing line switches, contact switches, and terminal lists; the attributes of the class structure of the GIS model terminal include: the terminal identifier mrid, the main device type, and the mounted node; the terminals are grouped according to the main device type and the mounted node, and the left and right sides of the outgoing line switch and the contact switch are used as the starting position to construct a directed acyclic graph; when the topology analysis unit performs topology analysis, it starts from a specified terminal, recursively performs topology analysis, merges the results, and obtains the relationship between the device elements; wherein: the device is recorded as the vertex of the directed acyclic graph, the device is sequentially stored in the edge of the directed acyclic graph, and the relationship between all device elements in the whole graph is generated; Maintenance rehearsal module: includes a simulation implementation unit, an impact range analysis unit, and a visualization implementation unit, wherein the simulation implementation unit is used to analyze the maintenance isolation point and simulate the power transfer plan in the DAG directed acyclic graph, the impact range analysis unit is used to analyze the impact range, and the visualization implementation unit is used to interact with the visualization core module and the user terminal to visualize the power transfer plan and the impact range; wherein the simulation implementation unit includes a power transfer plan generator, the power transfer plan generator is used to generate power-off operation steps and power-on operation steps, and the power-off operation steps and power-on operation steps are grouped according to the ring network interconnection switch to form a power transfer plan. 2. The system for generating a visual maintenance preview of a power grid according to claim 1, characterized in that the maintenance preview module is also used to parse user instructions and obtain specified maintenance equipment elements; When the transfer plan generator forms the transfer plan, it also calculates the nearest maintenance isolation point and determines the maintenance isolation range based on the maintenance equipment elements. 3. According to the generation system of the visual maintenance rehearsal of the power grid in claim 1, it is characterized in that the simulation implementation unit simulates the execution of the power transfer plan, updates the power-on status in real time, and analyzes the power outage distribution transformer based on the simulation results. 4. The system for generating a visual maintenance rehearsal of a power grid according to claim 2 is characterized in that the impact range analysis unit interacts with the marketing system, obtains associated user files according to the maintenance isolation point, and outputs the impact range of the power outage; the impact range analysis unit accesses the OCS distribution transformer operation record and outputs the distribution transformer impact range. 5. The system for generating a visual maintenance preview of a power grid according to claim 2, characterized in that the user instructions also include: marking as maintenance equipment, marking as power supply guarantee, disconnecting the switch, closing the switch, searching for equipment, maintenance preview and resetting the single line diagram; Wherein, the searching device includes searching outgoing lines and ring network switches. 6. The system for generating visual maintenance preview of power grid according to claim 1 is characterized in that the attributes of the class structure of the GIS model terminal also include: a dimension identifier id of the terminal list, and a sequence number sequenceNumber that respectively identifies the left and right sides of the device.