CN103093310B - Information system for realizing grid lean management - Google Patents

Abstract

The invention discloses an information system for realizing lean management of grids, including a grid definition module, a grid fusion module, a gridded equipment statistical analysis module, a gridded line loss analysis module, and a gridded rolling meter reading module , Gridded electricity rate recovery analysis module and gridded power outage simulation module. Based on the GIS platform, the system integrates a variety of basic data and business data. According to geographical space, load intervals, and line corridor information, the power grid, users or regions are divided into different grid grids from the perspective of business, and grid statistics, Grid merging, grid editing, and grid coloring functions realize graphical display and lean management of business data and basic data in various fields, and comprehensively improve management level and work efficiency.

Description

An Information System Realizing the Lean Management of Grid

technical field

The invention relates to the field of distribution network information systems in the electric power industry, in particular to an information system for realizing lean management of grids.

Background technique

Under the traditional operation and management model, the power grid business is carried out in the way of "everyone does the work and everyone bears the responsibility". This way that all people are responsible for all things leads to a series of problems such as lack of division of labor, disordered work arrangements, and unclear responsibilities. It is difficult to guarantee the benefits of resource input due to the focus of work.

Contents of the invention

The technical problem to be solved by the present invention is to provide an information system that realizes the lean management of the grid, so as to carry out the lean management of the production, marketing and scheduling of the grid business.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An information system for realizing the lean management of the grid, including:

The grid definition module is used to draw the shape of the grid, specify the management attribution, define the grid name, grid label, coloring and other appearance controls;

The grid fusion module is used to integrate the upper and lower levels of the management unit to which the grid belongs into a larger management unit to achieve higher-level statistical analysis;

The gridded equipment statistical analysis module is used to perform equipment statistical analysis and generate a grid thematic view based on the shape and position of the grid definition, combined with the equipment data of the GIS system;

The grid line loss analysis module combines the topological data of "station-line-transformation-household" covered by the station area grid, marketing basic data, and metering automation data to analyze the line loss of partitions, sub-lines, and sub-station areas, and based on Line loss rate coloring for different grids;

The grid-based rolling meter reading module realizes rolling meter reading on the basis of grid management. According to the workload of meter reading, the area that can complete meter reading in one day is divided and marked with the same color on the grid;

The gridded electricity charge recovery rate analysis module takes the grid as the basic unit to display the electricity charge recovery rate statistics of the grid in the station area such as the month and the optional time period, and realizes the visualized application of the electricity charge recovery rate;

The grid-based power failure simulation module uses the grid as the basic unit to display the impact range of different faults and different line power failure states, and uses different colors to identify different ranges.

The grid fusion module uses a polygon merging algorithm for grid fusion.

The gridded equipment analysis module uses the "improved arc length method" algorithm to analyze the spatial relationship between equipment positions and gridded area ranges.

The invention divides the power grid into grids through geographic space, load intervals and line corridors, and allocates management resources to corresponding grids according to management needs. From the perspective of management responsibilities, form management intervals and form management responsibility fields; clarify management responsibilities and identify management priorities. Following the concept of grid management, in accordance with the working idea of "data cleaning, grid subdivision; territorial responsibility, professional services; work order driven, visual management", combined with the corresponding relationship of "station-line-change-household" to sort out the work, One piece of data cleaning, one piece of grid service, to realize the lean management of production, marketing, and dispatching business. Through the implementation of grid lean management, the management level will be improved in business fields such as power grid production maintenance, operation scheduling, marketing and customer service, the management effect will be improved, and management resources will be saved.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural diagram of an information system that realizes lean management of a grid provided by the present invention;

Fig. 2 is a polygon schematic diagram of a polygon merging algorithm used in an information system that realizes lean management of grids provided by the present invention;

FIG. 3 is a schematic diagram of an information system application for realizing lean management of a grid provided by the present invention;

Fig. 4 is a graphic interface of an information system for realizing lean management of grid provided by the present invention.

detailed description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment one

A structural diagram of an information system for implementing lean grid management provided by the present invention is shown in FIG. 1 . Specifically include: grid definition module, grid fusion module, grid equipment statistical analysis module, grid line loss analysis module, grid rolling meter reading module, grid electricity recovery rate analysis module and grid power outage Analog modules.

Grid definition module. The basis of grid management is grid definition. This module is used to draw the shape of the grid, specify the management attribution, and define the appearance control such as grid name, grid label, and coloring.

The grid fusion module is used to integrate the upper and lower levels of the management unit to which the grid belongs into a larger management unit to achieve higher-level statistical analysis. The mesh fusion module adopts the polygon merge algorithm for mesh fusion.

The polygon merging algorithm is used to merge multiple legal polygons. A legal polygon is a polygon that satisfies: (1) adjacent line segments are only connected at one common point; (2) non-adjacent line segments are not connected at any common point.

The algorithm includes the following main steps: (1) generating polygonal loops and ring lists with directions respectively; (2) merging loops; (3) processing holes; (4) inserting holes into the merged loops. First generate the list of polygon loops and rings with directions respectively, then merge loops and merge polygons. The merging circuit first determines the common edges and vertices. Here, the scanning line method is used to divide the plane into strips, and the required tasks in the strips can be quickly completed. The scan line sweeps across the plane from negative infinity to positive infinity, and only stops at the position where there is a task to perform calculations or update data structures. When searching for polygon intersections, the edges of the polygon that are being swept by the scan line are of interest. Only these edges are possible intersecting edges, and they are stored in the data structure group sweep-linestatus, called the scanline status array (SLS). In order to make the scan smooth, the vertices should be sorted according to the direction of motion of the scan line.

Take Figure 2 as an example to illustrate merging polygons.

Starting from 0 ₀ 0 ₁ , because this side is not shared with any other polygons, the common pointer T is NIL. Walk to the side 0 ₁ 0 ₂ of the next polygon, whose pointer T _pointer is NIL, so side 0 ₀ 0 ₁ is acceptable. Likewise, edge 0 ₂ 0 ₃ is accepted. But the pointer T of the next edge 0 ₃ 0 ₄ is not NIL, it points to the edge 11 ₁ 11 ₂ of the polygon P ₁₁ , so this algorithm skips this edge and continues walking along the edge of the polygon P ₁₁ , the edge 11 ₂ 11 ₀ is accepted as the next edge of the connected polygon. Likewise, the edge 11 ₀ 11 ₁ is accepted. The next edge 11 ₁ 11 ₂ points to edge 0 ₃ 0 ₄ , which is a signal to change the polygon, walk along 0 ₃ 0 ₄ to reach edge 0 ₄ 0 ₅ , further walk to edge 0 ₁₄ 0 ₁₅ , its pointer T points to Side 3 ₀ 3 ₃ . The algorithm skips this edge and walks to the adjacent 3 ₀ 3 ₁ whose pointer T is non-NIL. Jump from this edge to the edge 5 ₁ 5 ₂ of the next polygon P ₅ , the edge 5 ₀ 5 ₂ pointer T is NIL, so accept this edge. Now the algorithm has returned to the starting edge 0 ₀ 0 ₁ . However, not all the edges with NIL pointer T have been visited, so we have to continue the same walk, and find 2 more loops: one from edges 0 ₈ 0 ₉ , 4 ₁ 4 ₂ , 6 ₁ 6 ₂ and 0 ₇ 0 ₈ , and the other by the sides of polygons P ₁₂ and P ₁₃ . Finally, the closure of the found polygons is checked.

The gridded equipment statistical analysis module is used to perform equipment statistical analysis and generate a grid thematic view based on the shape and position defined by the grid, combined with the equipment data of the GIS system.

The statistical analysis module of gridded equipment performs spatial analysis of equipment location and gridded area range. The analysis of most devices classified as point devices, that is, the analysis of the spatial relationship between points and polygons, adopts the algorithm idea of "improved arc length method". The algorithm requires only O(1) additional space and a time complexity of O(n), but with small coefficients. The biggest advantage is that it has high precision. It only needs to do multiplication and subtraction. If it is for integer coordinates, there is no precision problem at all, and it is very simple to implement. It is better than the corner method and the ray method and is less prone to errors. The polygon of the meshed area is a directed polygon, which defines the forward direction along the polygon, and the left side of the edge is the inner domain of the polygon. Take the measured point as the center of the unit circle, project all the directed sides to the unit circle radially, and calculate the algebraic sum of the arc lengths on the unit circle. If the algebraic sum is 0, the point is outside the polygon; if the algebraic sum is 2π, the point is inside the polygon; if the algebraic sum is π, the point is on the polygon.

Translate the coordinate origin to the measured point P, this new coordinate system divides the plane into 4 quadrants, for each polygon vertex P, only consider the quadrant it is in, and then visit each vertex P of the polygon in order of adjacency, analyze P and P[i+1], there are the following three situations:

(1) P[i+1] is in the next quadrant of P. At this time, add π/2 to the arc length sum;

(2) P[i+1] is in the upper quadrant of P. At this time, the arc length sum minus π/2;

(3) P[i+1] is in the opposite quadrant of P. First calculate f=y[i+1]*x-x[i+1]*y (cross product), if f=0, the point is on the polygon; if f<0, the arc length and minus π; if f>0 , arc length and plus π.

If a certain coordinate of P is 0, it will be treated as a positive sign; the second point is that if the measured point coincides with the vertex of the polygon, special treatment is required. When a side of the polygon is on the coordinate axis and the two vertices are on both sides of the origin: each time P and P[i+1] are calculated, the cross product and dot product are calculated to determine whether the point is on the side If yes, the judgment ends, otherwise continue the above process. This sacrifices time, but ensures correctness.

The grid line loss analysis module combines the topological data of "station-line-transformation-household" covered by the station area grid, marketing basic data, and metering automation data to analyze the line loss of partitions, sub-lines, and sub-station areas, and based on Line loss ratios color the different bench area meshes. In this way, the cause of unqualified line loss can be visually analyzed. If there are unqualified positive and negative line losses in a combined area of a combined area, it may be caused by a problem in the division of power supply areas; It is caused by stealing electricity; in a station area combination area, there are only stations with unqualified negative line loss, which may be caused by the fault of the master meter. It can quickly locate the real reason behind the unqualified line loss, take effective countermeasures for abnormal line loss, improve the pass rate of line loss, and improve power supply efficiency.

The grid-based rolling meter reading module implements rolling meter reading on the basis of grid management. According to the workload of meter reading, it divides the areas that can complete meter reading in one day and marks them on the grid with the same color. The principle of division of meter reading areas is "one area per person per day". In this way, the meter reading work radius of the meter reader is reduced, and the work efficiency and labor productivity are improved due to the centralized bus ride, centralized meter reading, and unified meter recording. Especially during bill reminders, power outages, and power transmission periods, due to the reduction of the activity radius, it is possible to quickly restore calls and reduce customer complaints.

The gridded electricity charge recovery rate analysis module takes the grid as the basic unit to display the electricity charge recovery rate statistics of the grid in the station area such as the month and the optional time period, and realizes the visualized application of the electricity charge recovery rate;

The grid-based power failure simulation module uses the grid as the basic unit to display the impact range of different faults and different line power failure states, and uses different colors to identify different ranges.

Gridded equipment statistical analysis module, gridded line loss analysis module, gridded rolling meter reading module, gridded electricity charge recovery rate analysis module and gridded power failure simulation module constitute the display part of the information system, which is displayed through WebGIS; The grid definition module and the grid fusion module constitute the grid management part, which integrates the grid data generated by combining marketing data and GIS data and then submits it to WebGIS for display.

Embodiment two

Fig. 3 is a schematic diagram of the application of an information system for implementing lean management of grids provided by the present invention. The information system for implementing lean management of grids provided by this embodiment adopts a browser-based multi-layer structure to build an application system. As shown in Figure 3, this architecture is mainly used to meet the needs of the overall application rules and software architecture. The multi-tier architecture can have different host system deployment schemes according to the actual situation. Multi-tier architecture has good scalability and flexibility.

According to the current power system status, adopting the architecture shown in Figure 3 can meet the requirements of the application system for user visits, business processing capabilities and data storage. Servers are divided into database servers and application servers. Application servers include GIS application servers, gridded GIS system application servers and ESB servers, which are specially responsible for business processing and web access, and form a small local area network with database servers. The client computer can access the application system through the Internet but cannot directly access the database.

Embodiment Three

Fig. 4 is a graphic interface of an information system for realizing lean management of grid provided by the present invention. As shown in Figure 4, the interface of the information system is based on the GIS system. Different colors are used to distinguish different grid areas, and lean management is performed based on different grid areas.

The invention divides the power grid into grids through geographic space, load intervals and line corridors, and allocates management resources to corresponding grids according to management needs. From the perspective of management responsibilities, form management intervals and form management responsibility fields; clarify management responsibilities and identify management priorities. Following the concept of grid management, in accordance with the working idea of "data cleaning, grid subdivision; territorial responsibility, professional services; work order driven, visual management", combined with the corresponding relationship of "station-line-change-household" to sort out the work, One piece of data cleaning, one piece of grid service, to realize the lean management of production, marketing, and dispatching business. Through the implementation of grid lean management, the management level will be improved in business fields such as power grid production maintenance, operation scheduling, marketing and customer service, the management effect will be improved, and management resources will be saved.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (2)

1. An information system for realizing lean management of the grid, characterized in that it comprises: The grid definition module is used to draw the shape of the grid, specify the management attribution, define the grid name, grid label, and coloring appearance control; The grid fusion module is used to integrate the upper and lower levels of the management unit to which the grid belongs into a larger management unit to achieve higher-level statistical analysis; The gridded equipment statistical analysis module is used to perform equipment statistical analysis and generate a grid thematic view based on the shape and position of the grid definition, combined with the equipment data of the GIS system; The grid line loss analysis module combines the topological data of "station-line-transformation-household" covered by the station area grid, marketing basic data, and metering automation data to analyze the line loss of partitions, sub-lines, and sub-station areas, and based on Line loss rate coloring for different grids; The grid-based rolling meter reading module realizes rolling meter reading on the basis of grid management. According to the workload of meter reading, the area that can complete meter reading in one day is divided and marked with the same color on the grid; The grid electricity recovery rate analysis module, with the grid as the basic unit, displays the statistics of the electricity rate recovery rate in the monthly and self-selected time period dimensions of the grid in the station area, and realizes the visualization application of the electricity rate recovery rate; The grid-based power failure simulation module uses the grid as the basic unit to display the impact range of different faults and different line power failure states, and uses different colors to identify different ranges; Wherein, the statistical analysis module of the gridded equipment adopts the "improved arc length method" algorithm to analyze the spatial relationship between the location of the equipment and the scope of the gridded area. 2. The information system according to claim 1, wherein the grid fusion module uses a polygon merging algorithm for grid fusion.