CN104104719A - Demonstration method for power grid real-time flow diagram in power grid dispatching mobile application - Google Patents

Demonstration method for power grid real-time flow diagram in power grid dispatching mobile application Download PDF

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Publication number
CN104104719A
CN104104719A CN201410316374.4A CN201410316374A CN104104719A CN 104104719 A CN104104719 A CN 104104719A CN 201410316374 A CN201410316374 A CN 201410316374A CN 104104719 A CN104104719 A CN 104104719A
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data
real
mobile terminal
svg
file
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何超林
周志烽
黄文载
孙北宁
赵凌
杨震乾
余琳
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China Southern Power Grid Co Ltd
Tongfang Technology of Yunnan Power Grid Co Ltd
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China Southern Power Grid Co Ltd
Tongfang Technology of Yunnan Power Grid Co Ltd
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Priority to CN201410316374.4A priority Critical patent/CN104104719A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40Display of information, e.g. of data or controls

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  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

Provided is a demonstration method for a power grid real-time flow diagram in a power grid dispatching mobile application. The method comprises the steps that operation and storage capability of a common intelligent mobile phone is pre-estimated on the basis of data characteristics of the power grid flow diagram from aspects of data source acquisition, figure preprocessing, local storage, cache and figure updating of the real-time flow diagram at three levels of a data source, a service terminal and a mobile terminal. According to the demonstration method for figure data of power grid real-time flow information at an intelligent mobile terminal, a problem of low efficiency of loading of the real-time flow diagram to the mobile terminal is solved, and demonstration of the power grid real-time flow information at the intelligent mobile terminal is realized.

Description

The methods of exhibiting of electrical network Real-time Power Flow figure in application is moved in a kind of dispatching of power netwoks
Technical field
This method relates to power engineering field, and this method is mainly to have realized the displaying of electrical network Real-time Power Flow figure at intelligent mobile terminal.
Background technology
By intelligent mobile terminal technique construction electrical network, move dispatch application platform (hereinafter to be referred as " mobile scheduling "), realizing operation of power networks information shows in the panorama multidimensional of intelligent mobile terminal, can effectively overcome the limitation in existing working way, raise the management level and operating efficiency, help managers at different levels and operations staff " whenever and wherever possible " to grasp operation of power networks state, realize diversification office.
One of the information that need to show on mobile terminal Real-time Power Flow figure, can be fast for mobile terminal user of service provides operation of power networks information accurately.But Real-time Power Flow figure is real-time, data volume is large, what in the mobile phone application of other industry, process is fewer, how on intelligent mobile terminal, to realize the displaying of Real-time Power Flow figure, is to realize one of the problem that must solve of dispatching that moves.
Summary of the invention
The methods of exhibiting of electrical network Real-time Power Flow figure in application is moved in a kind of dispatching of power netwoks, the inventive method is characterised in that, be included in data source, service end, three of mobile terminals aspect from data source collection, figure preliminary treatment, local storage, buffer memory and the figure renewal aspect of Real-time Power Flow figure, data characteristic with electric network current diagram, estimate computing, the storage capacity of general intelligence mobile phone, proposed a kind of method of showing electrical network Real-time Power Flow at mobile terminal; Step is,
1) service end, has carried out preliminary treatment to the SVG figure source file in data source, to graphic file compression, encryption;
2) mobile terminal, SVG figure source file after distributing proprietary memory space to compression, encryption in intelligent mobile terminal RAM (random access memory) card carries out this locality storage, utilize MD5(Message-Digest Algorithm 5) coherency management function, realize the more new management of base map;
3) file of this locality being stored is decrypted, decompress(ion), deposits in HTML5 buffer memory, and the displaying of SVG figure is directly obtained by figure load mechanism from buffer memory;
4) adopt the Data Analysis technology of E form, when get the up-to-date E formatted file of Real-time Power Flow Information in data source after, in service end, start parsing, retrieval component, according to identification information in each SVG file and the attribute of metric data in E formatted file, carry out relation corresponding, generate corresponding object array, deposit in memory database, for calling;
5) the timing data load mechanism of mobile terminal, utilizes timer, regularly to service end, submits request to, obtains the real time data that needs renewal; In the application of mobile terminal, open after electrical network Real-time Power Flow figure, by the DOM node of SVG figure source file is parsed to measuring point information, form an object array, as request object, be submitted to service end, service end, according to the measuring point information of request, obtains real time data and turns back to mobile terminal from memory database, and mobile terminal gets after real time data, data are passed to data charging assembly, and the DOM DLL (dynamic link library) by SVG realizes dynamically updating of flow data;
6) intelligent mobile terminal browser, by SVG figure and Real-time Power Flow Information rapid loading in HTML5, by the webview embedded technology of HTML5, is realized different platform cell phone terminal, comprising: the unified style show of IOS, Android.
1.1. key technology
Electrical network Real-time Power Flow figure is in the displaying of intelligent mobile terminal, mainly depend on the combination of following five kinds of technology, thereby overcome Real-time Power Flow figure spacing ends update time, figure is large, caused, in the problem such as mobile terminal transmission rate is slow, having realized the displaying of Real-time Power Flow figure at mobile terminal.
figure compress technique
SVG (Scalable Vector Graphics) is the two-dimension vector graphics the expanded form based on XML, have that document size is little, limit convergent-divergent is without the feature such as sawtooth, interactivity be strong, by W3C, formulated, having open standard, is not privately owned form, does not belong to individual patent yet, based on this universal standard, in conjunction with power industry Graphic exchange standard, at aspects such as label model, mutual standards, make and meet the professional standard of demand in the industry, to adapt to the integrated and expansion between electric power system.In the XML description document of SVG, each node is as DOM object model, can be undertaken alternately by DOM DLL (dynamic link library) standard and extraneous program, by upgrading DOM node in SVG figure, can to realize on figure Data Dynamic mutual, thereby realize Real-time Power Flow Information refreshing on SVG figure.
To the pretreated main purpose of SVG graphic file, be to transform out the more SVG file of standard, simplify SVG file simultaneously.SVG file mainly comprises leading element, electrical model, privately owned attribute three partial informations, and the content of processing comprises:
1) according to mobile terminal SVG standard, analyze the SVG map file in existing system, prioritization scheme is targetedly proposed;
2), in the structure of original graphic file, keep the element of the standards such as graphic file head, pel definition, display properties definition and topological relation and electrical model constant;
3) labels such as user's exchange logic, graph rendering and object factory and content are optimized.Mainly comprise: delete the node content (as auxiliary descriptor) that do not affect drawing and for supporting the event etc. of PC end control; To pattern and event content, adopt CSS file and JS file to be independent of SVG file process;
By above-mentioned processing, transform out lightweight and support the SVG map file that mobile terminal is shown.
webview embedded technology
HTML5 organizes to set up unified standard by W3C, its cross-platform characteristic ratio is in the past for there being the improvement of matter in multi-platform web development efficiency, since API document is open, HTML5 selects for web application developer provides the optimization on greater functionality, brought the advantage of more experience functions, HTML5 provides unprecedented data and application access open interface, applications can be directly directly connected, for unitized overall development and multi-platform operation provide strong support with the data of browser inside.
HTML5 has supported embedded SVG label, figure, state show and mutual implementation procedure very convenient.Intelligent mobile terminal browser passes through call operation system installed with built-in component (as IOS/Android adopts WebView, WP adopts WebBrower), without plug-in unit is installed, by SVG figure rapid loading in HTML5, thereby realize the displaying of tidal current chart in the browser of mobile terminal.
Conventional load mode has two kinds: one, in HTML5 standard, SVG itself is a label that is used for drawing polar plot, consistent with other html tag operation, can by itself independently SVG graphic file content in the mode of label, be loaded in the div label of HTML5; Two, in HTML code with the mode association of relative path SVG file independently.
data storage and caching mechanism
SVG technical support graphic designs is separated with data content, and reasonably the memory mechanism of SVG graphic file can greatly promote its efficiency of transmission and display performance.
1) storage of SVG map file mobile terminal and renewal
By in service end, SVG graphic file being compressed, encrypted, in intelligent mobile terminal RAM (random access memory) card, distribute proprietary memory space to deposit, while avoiding opening the page, download SVG map file at every turn, in efficiency of transmission and safety guarantee, can obtain positive effect.Can utilize in addition the more New Parent based on Version Control and on-line automatic renewal technology to complete download, storing process.
When tidal current chart is installed in application, store this locality into application program simultaneously; Station wiring diagram, because quantity of documents is more, each plant stand figure adopts to open first and downloads and be stored in local mode, avoids affecting disposable download factor data amount efficiency of transmission more.
Tidal current chart base map update mechanism: utilize MD5(Message-Digest Algorithm 5) coherency management function, realizes the more new management of base map.This mechanism implementation procedure is: the base map file in service end has unique MD5 coding, when the new base map file content collecting when service end occurs to upgrade, MD5 encoded radio will change, now service end will send to upgrade and be prompted to mobile phone terminal, mobile phone terminal receives that upgrading prompting just can upgrade in time, and without implementing to refresh base map.Implementation as shown in Figure 2.
2) caching mechanism when SVG figure shows
For strengthening the fail safe of electric network current diagram, this method utilizes HTML5 to have buffer memory characteristic, sets up the buffer memory of SVG file in internal memory, just deciphers decompress(ion) while checking logging at every turn, the high security of electric network data can be met so on the one hand, SVG figure displaying speed can be improved on the other hand.Specific implementation process is as follows:
The file of first this locality being stored is decrypted, decompress(ion) (be below referred to as and unpack), deposit in HTML5 buffer memory, the displaying of SVG figure is directly obtained from buffer memory, before mobile application is logged off, in buffer memory, file keeps storing, can guarantee like this, by checking that tidal current chart is switched to while reviewing tidal current chart again after other functions, to remove the arithmetic operation again unpacking from, thereby promote surfing and user experiences.Once exit application logging status, in buffer memory, file, by deleted, is guaranteed the safety of data.Caching mechanism as shown in Figure 3.
the Data Analysis technology of form
E language is: for meeting the efficient description of electric power system data model and the efficient exchange of a large amount of online datas, the data model descriptive language of proposition.It has basic characteristics and the advantage of markup language, and formed instance data is a kind of tokenized plain text data.It is by a small amount of label symbol and describe grammer, can succinctly describe efficiently the various simple and complex data models of electric power system, and data volume more efficiency is higher, and more meets the custom naturally that people use, and computer is processed also simpler.For proprietary protocol, it is stronger that E formatted file has versatility, is easy to the advantage that technology realizes.Therefore the Real-time Power Flow Information data source that, intelligent mobile terminal is shown should adopt E formatted file.
Because of electric network swim real time data, to have refreshing frequency fast, and the feature that measuring point quantity is large, therefore adopt timing mechanism at server end, is periodically obtained E form and measured file.This can be avoided huge data storage, and server end is the electrical network real time data of the current section of buffer memory only, and server is only stored the up-to-date E formatted file data of obtaining, and file data will be capped before.In addition, for eliminating the I/O bottleneck of traditional magnetic disk database, obtain higher access speed, to meet, Real-time Power Flow data respond fast and the application requirements of high-throughput, at server end, adopt internal storage data library storage Real-time Power Flow data.
In memory database, Method of Data Organization is: for single SVG file, build a corresponding object array in memory bank, all measuring points that this object array has comprised this SVG file inside.A plurality of SVG files generate the storage array of same quantity.Such data structure can realize the immediate addressing operation of the required real time data of SVG, responds fast the high speed access demand of mobile terminal to data.
Specific implementation process roughly, after getting up-to-date E formatted file, starts resolution component, according to identification information in each SVG file and the attribute of metric data in E formatted file, carry out relation corresponding, generate corresponding object array, deposit in memory bank, for calling.E formatted file structure and analytic method refer to Fig. 4.
power Flow Information refreshes in real time
1) DOM resolving
XML and HTML that DOM is SVG as model object provide api interface, by script and programming language, can realize the mutual of application program and SVG graphical nodes.The DOM resolving of SVG document is based on SVG file structure.SVG file structure is the node structure of a complete tree type, and a SVG file has and only have a root node, from root node, can travel through and obtain graphic elements all in the document from top to bottom.When the details (memory location, storage content etc.) of obtaining root node afterwards, the arbitrary node in tree is operated to (read and write) according to the various algorithms of tree.Thereby realized, the DOM of SVG document is resolved.
By the traversal to each node elements of SVG graphic file, can obtain trend and show required measuring point information, these measuring point information package are processed, can as suction parameter to server end, obtain SVG trend and show required real time data.
2) Real-time Power Flow Refresh Data mode
The renewal of Real-time Power Flow data on SVG figure, mainly timing mechanism and the data charging assembly by mobile terminal completes.Refresh Data process as shown in Figure 5.
Utilize timer, mobile terminal is regularly submitted request to server, obtains the real time data that needs renewal.In the application of mobile terminal, open after electrical network Real-time Power Flow figure, by the DOM node to SVG figure, parse measuring point information, form an object array, as request object, be submitted to service end, service end is according to the measuring point information of request, from memory database, obtain real time data and turn back to mobile terminal, thereby complete the acquisition process of a timing cycle of real time data.
Mobile terminal gets after real time data, and data are passed to data charging assembly, and the DOM DLL (dynamic link library) by SVG realizes dynamically updating of flow data.
1.2. function of the present invention and effect
By the present invention, mobile terminal can be shown electrical network Real-time Power Flow figure smoothly, and the function that the present invention mainly realizes and effect point have:
1, realized Real-time Power Flow figure SVG graphic file and at server end, answered the storage of figure and model, in the local slow storage of mobile terminal, reduced the graph data transmission quantity at mobile terminal, finally having realized is that Real-time Power Flow figure is in the displaying of mobile terminal;
2, in mobile terminal, realizing electrical network Real-time Power Flow and show, is mainly the Static Power Flow between circuit and plant stand; Support the operations such as amplification, movement, click " plant stand " icon in network diagram, the demonstration that can enter plant stand tidal current chart;
3, plant stand Real-time Power Flow shows, shows the Static Power Flow of plant stand inside, the operation such as supports to amplify, mobile;
4, support the choosing of the pels such as plant stand, equipment, and can further check its attribute, comprise the data such as capacity, history curve.
Accompanying drawing explanation
Fig. 1 electrical network Real-time Power Flow figure methods of exhibiting flow chart;
The local storage of Fig. 2 SVG base map and update mechanism;
Fig. 3 SVG Real-time Power Flow data load caching mechanism;
The Data Analysis technology of Fig. 4 E form;
Fig. 5 Real-time Power Flow Refresh Data process.
Embodiment
The inventive method is a set of technical method that electrical network Real-time Power Flow figure shows at mobile terminal of realizing.Its feature mainly in the compress technique of image file, the parsing of the webview embedded technology of HTML5, E formatted data and the real-time refresh technique of Power Flow Information, in conjunction with utilization, have realized the displaying of Real-time Power Flow figure at computing and the limited mobile terminal of storage capacity.
The methods of exhibiting of electrical network Real-time Power Flow figure in application is moved in a kind of dispatching of power netwoks, the inventive method is characterised in that, be included in data source, service end, three of mobile terminals aspect from data source collection, figure preliminary treatment, local storage, buffer memory and the figure renewal aspect of Real-time Power Flow figure, take into full account the data characteristic with electric network current diagram, estimate computing, the storage capacity of general intelligence mobile phone, thereby proposed a kind of method of showing electrical network Real-time Power Flow at mobile terminal; Step is,
1) service end, has carried out preliminary treatment to the SVG figure source file in data source, to graphic file compression, encryption;
2) mobile terminal, SVG figure source file after distributing proprietary memory space to compression, encryption in intelligent mobile terminal RAM (random access memory) card carries out this locality storage, utilize MD5(Message-Digest Algorithm 5) coherency management function, realize the more new management of base map;
3) file of this locality being stored is decrypted, decompress(ion), deposits in HTML5 buffer memory, and the displaying of SVG figure is directly obtained by figure load mechanism from buffer memory;
4) adopt the Data Analysis technology of E form, when get the up-to-date E formatted file of Real-time Power Flow Information in data source after, in service end, start parsing, retrieval component, according to identification information in each SVG file and the attribute of metric data in E formatted file, carry out relation corresponding, generate corresponding object array, deposit in memory bank, for calling;
5) the timing data load mechanism of mobile terminal, utilizes timer, regularly to service end, submits request to, obtains the real time data that needs renewal; In the application of mobile terminal, open after electrical network Real-time Power Flow figure, by the DOM node of SVG figure source file is parsed to measuring point information, form an object array, as request object, be submitted to service end, service end, according to the measuring point information of request, obtains real time data and turns back to mobile terminal from memory database, and mobile terminal gets after real time data, data are passed to data charging assembly, and the DOM DLL (dynamic link library) by SVG realizes dynamically updating of flow data;
6) intelligent mobile terminal browser, by SVG figure and Real-time Power Flow Information rapid loading in HTML5, by the webview embedded technology of HTML5, is realized different platform cell phone terminal, comprising: the unified style show of IOS, Android.
By the research to based on SVG and HTML5 intelligent mobile terminal display technique, and in conjunction with the technology that electrical network Real-time Power Flow data acquisition mode and real time data refresh on SVG figure, provided the technic relization scheme that overall Real-time Power Flow Information is shown at intelligent mobile terminal.Group method framework is as shown in Figure 1:
Real-time Power Flow figure collects final displaying and is broadly divided into three layers of data source, service end and mobile terminals from source.
1. data source mainly provides SVG map file and the Real-time Power Flow data of existing system.SVG map file is namely at the base map of this locality storage and buffer memory, and Real-time Power Flow data are the information of loading need to show time;
2. service end has mainly realized data acquisition and optimization process, guarantees graphic file and real time data standard and general more, and more high efficiency data, services can be provided, for mobile terminal promotes efficiency of transmission, reduction calculated load provides support.Service end mainly completes the renewal collection of Real-time Power Flow figure base map, by version management, reminds mobile terminal to upgrade; When mobile phone terminal need to be shown tidal current chart, gather Real-time Power Flow diagram data, load and send to mobile phone terminal.
Mobile terminal utilizes this locality storage and the Real-time Power Flow Information display technique of SVG figure, completes the renewal of local base map, guarantees the rapid loading of flow data; By the embedded technology of HTML5, guarantee that different mobile terminals operating system displaying style is consistent.

Claims (1)

1. the methods of exhibiting of electrical network Real-time Power Flow figure in application is moved in a dispatching of power netwoks, it is characterized in that, be included in data source, service end, three of mobile terminals aspect from data source collection, figure preliminary treatment, local storage, buffer memory and the figure renewal aspect of Real-time Power Flow figure, data characteristic with electric network current diagram, estimate computing, the storage capacity of general intelligence mobile phone, propose a kind of method of showing electrical network Real-time Power Flow at mobile terminal; Step is,
1) service end, carries out preliminary treatment to the SVG figure source file in data source, to graphic file compression, encryption;
2) mobile terminal is distributed the SVG figure source file of proprietary memory space to compression, after encrypting to carry out this locality and is stored in intelligent mobile terminal RAM (random access memory) card, utilizes MD5(Message-Digest Algorithm 5) coherency management function, carry out more new management;
3) file of this locality being stored is decrypted, decompress(ion), deposits in HTML5 buffer memory, and the displaying of SVG figure is directly obtained by figure load mechanism from buffer memory;
4) adopt the Data Analysis technology of E form, when get the up-to-date E formatted file of Real-time Power Flow Information in data source after, in service end, start parsing, retrieval component, according to identification information in each SVG file and the attribute of metric data in E formatted file, carry out relation corresponding, generate corresponding object array, deposit in memory database, for calling;
5) the timing data load mechanism of mobile terminal, utilizes timer, regularly to service end, submits request to, obtains the real time data that needs renewal; In the application of mobile terminal, open after electrical network Real-time Power Flow figure, by the DOM node of SVG figure source file is parsed to measuring point information, form an object array, as request object, be submitted to service end, service end, according to the measuring point information of request, obtains real time data and turns back to mobile terminal from memory database, and mobile terminal gets after real time data, data are passed to data charging assembly, and the DOM DLL (dynamic link library) by SVG realizes dynamically updating of flow data;
6) intelligent mobile terminal browser, by SVG figure and Real-time Power Flow Information rapid loading in HTML5, by the webview embedded technology of HTML5, is realized different platform cell phone terminal, comprising: the unified style show of IOS, Android.
CN201410316374.4A 2014-07-04 2014-07-04 Demonstration method for power grid real-time flow diagram in power grid dispatching mobile application Pending CN104104719A (en)

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CN104484769A (en) * 2014-12-31 2015-04-01 国家电网公司 Two and three-dimensional integrated editing method used for tidal atlas of electric network
CN105049787A (en) * 2015-06-05 2015-11-11 江苏国电南自海吉科技有限公司 Real-time caching and active push based monitoring automatic system client data updating method under B/S architecture
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CN107995176A (en) * 2017-11-27 2018-05-04 南京国电南自轨道交通工程有限公司 A kind of SCADA system picture caching system
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CN108776761A (en) * 2018-06-08 2018-11-09 广东电网有限责任公司 A kind of electric network wiring scheme browsing method and electric network wiring scheme browse system
CN108984175A (en) * 2018-07-12 2018-12-11 积成电子股份有限公司 The power grid SVG line chart methods of exhibiting of object-oriented suitable for mobile device
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CN112000832A (en) * 2020-08-13 2020-11-27 贵州电网有限责任公司 SVG-based transformer substation electric circuit graph transformation method
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Application publication date: 20141015