CN101447049A - Rapid line loss analyzing method and system thereof - Google Patents
Rapid line loss analyzing method and system thereof Download PDFInfo
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- CN101447049A CN101447049A CNA2008102183618A CN200810218361A CN101447049A CN 101447049 A CN101447049 A CN 101447049A CN A2008102183618 A CNA2008102183618 A CN A2008102183618A CN 200810218361 A CN200810218361 A CN 200810218361A CN 101447049 A CN101447049 A CN 101447049A
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Abstract
The invention is applied to the line loss management field of a power system and provides a method for rapidly calculating and analyzing line loss. The rapid line loss analyzing method comprises the following steps: a hierarchical modeling is carried out on a power supply network; line loss calculation attributes are set for a relative power network object; line losses at each level are calculated individually; the superior line loss directly uses the calculation result of the inferior line loss. During the line loss calculation and analyzing process, the method fully utilizes the characteristics of hierarchical transmission and hierarchical management of the power network, effectively solves the problems of large data quantity and slow calculating process during the line loss calculation and provides technical support for managers of power companies to master line loss conditions fully and rapidly.
Description
Technical field
The invention belongs to the electrical management field, relate in particular to a kind of method and system of rapid line loss analyzing.
Background technology
In electric system, electric power is at first entered the grid of Utilities Electric Co. by the generating plant, at grid through long Distance Transmission, become the power transmission network of next stage voltage by transformer, after transmission, become the more power transmission network of next stage voltage by transformer again, finally enter the large user of each electric pressure, or become the mains voltage of 220V, enter average family.
From above-mentioned electric power transfer process as can be seen, the transmission of electric power is a very complicated process.Transmission course complexity not only, electric system also relate to complicated management system, and different electric pressures and different geographic areas adhere to different unit managements usually separately, and these units have different equity structures and different way to manages again usually.
Electric power during through equipment such as line of electric force, transformers, inevitably can produce electric energy loss in transmission course; Simultaneously, owing to various device fault, mistake etc., can produce the loss on the electric energy metrical.Above-mentioned two class energy losses are referred to as line loss, and wherein the former claims the technology line loss again, and the latter claims to manage line loss again.
To electric power enterprise, line loss promptly means the loss on the economic benefit, and line loss is big more, and economic loss is just big more, and vice versa.To the whole society, line loss is big more, and energy dissipation is just big more, and the utilization factor of resource is just more little.Electric power enterprise needs in various manners, reduces line loss as much as possible, to improve economic benefit of enterprises and social benefit.In these modes, the most important is analyzed and is managed existing line loss situation, exactly the present situation and the distribution mode of line loss is analyzed, thereby is helped finding line loss to produce reason, adopts the method for different reduction line losses at concrete reason.The line loss management system is cover software systems, is used for management and analyzes line loss.
Traditional line loss management system, electric power networks is carried out modeling with software mode, obtain the charge value of each stoichiometric point, carry out all kinds of calculating according to model then, thereby obtain the line loss (promptly claim " four minutes " line loss) in branch unit, component voltage, branch circuit, Fen Tai district, and data such as bus balance, loss on transmission, the power consumption rate of standing.
From the account form of above-mentioned traditional line loss management system as can be known, it calculates line loss and has done two supposition:
1, all stoichiometric points in the electric power networks all have metering outfit and automatic meter number recorder, and all continuous datas can both be in time, obtain accurately;
2, software systems all are very fast to the storage of all data, computing, analysis etc., can ignore computing time, even stoichiometric point quantity very huge (up to ten million), the data volume of each stoichiometric point a lot (hundreds of thousands bar).
And in fact, according to the present situation of electric system and the level of computer technology, these two supposition can't be satisfied substantially.According to present and recent situation, electric power enterprise also can't carry out automatic data logging to all stoichiometric points, even automatic data logging is arranged, can't guarantee that also metering outfit and kilowatt meter recorder are out of order never.In addition, current computer is when carrying out big data quantity calculating, and its computing velocity is quick not enough, and computation process needs the more time, and electric power enterprise does not use superhuge high-end server yet; General line loss management system is analyzed the line loss of a provincial power network, needs several hrs just can obtain the result usually, makes us being difficult to accepting.
Summary of the invention
The invention provides a kind of method that line loss is calculated fast and analyzed, and applicable and metering outfit and the incomplete situation of automatic data logging equipment.At the electrical network hierarchy of reality, the algorithm of quick calculating line loss is provided, thereby solves the incomplete and too slow problem of computing velocity of metering outfit.
Another purpose of the embodiment of the invention is to provide a kind of method of rapid line loss analyzing.
The another purpose of the embodiment of the invention is to provide a kind of line loss management system.
The another purpose of the embodiment of the invention is to provide a kind of line loss basic unit application system.
Embodiments of the invention are achieved in that a kind of method of rapid line loss analyzing, said method comprising the steps of:
Supply network is carried out layered modeling;
Relevant power network object is provided with the line loss computation attribute;
Line losses at different levels are calculated separately;
Higher level's line loss is directly utilized the result of calculation of subordinate.
A kind of method of rapid line loss analyzing said method comprising the steps of:
Subordinate's line loss combined data is carried out further statistics and analysis;
Obtain the source book of subordinate unit as required.
A kind of line loss management system, described system comprises:
According to the source book of grass-roots unit's typing, Utilities Electric Co. at county level carries out tabulate statistics;
Local level Utilities Electric Co. carries out tabulate statistics according to the data of company at county level, or extracts the part source book and add up again;
Provincial Utilities Electric Co. carries out tabulate statistics according to the data of local level company, or the source book of extracting part region-by-region level company, or the source book of company at county level adds up again, finally obtains the line loss statistical conditions of the whole province.
A kind of line loss basic unit application system, described system comprises:
Acquisition module is used to obtain the line loss source book;
Pretreatment module, be used to adopt hash algorithm that the line loss source book that gets access to is made a summary, generate corresponding informative abstract, and the line loss source book information that has successfully sent this line loss source book that gets access to and last time compared, extract the line loss source book information that has changed;
Compression module is used for the described line loss source book information that has changed is compressed processing;
Communication module is used to send the line loss source book.
The present invention is in the line loss calculating and analytic process of electric system, make full use of the Delamination Transmission of electrical network, the characteristics of layer-management, effectively solved line loss calculate in big, the computation process of data volume problem slowly, the managerial personnel of Utilities Electric Co. are grasped the line loss situation fully fast technical guarantee are provided.
Description of drawings
Fig. 1 is the data transmission network figure of line loss management system;
Fig. 2 is the realization flow synoptic diagram of the rapid line loss analyzing method that provides of the embodiment of the invention;
Fig. 3 is the realization flow synoptic diagram of the line loss management system line loss processing method of data that provides of the embodiment of the invention;
Fig. 4 is the structural representation of the line loss management system that provides of the embodiment of the invention;
Fig. 5 is the structural representation of basic unit's application system of providing of the embodiment of the invention;
Fig. 6 is the line loss management system framework synoptic diagram that the embodiment of the invention provides;
Fig. 7 is the networking plan synoptic diagram that the embodiment of the invention provides.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, filter by the continuous data that line loss basic unit application system is obtained, send to higher level's line loss administrative center with filtering the required continuous data in back, adopt this method to filter out not need the continuous data that sends, thereby make the present invention prevent the bottleneck problem that the concurrent transmission of data of a large amount of collection points brings, and, thereby the memory space and the calculated amount of higher level's line loss administrative center have been reduced by pre-service to continuous data.
Fig. 2 shows the realization flow of the rapid line loss analyzing method that the embodiment of the invention provides, and details are as follows:
In step S101, subordinate's electrical network carries out line loss and calculates;
Line loss basic unit application system generates the basic data and the line loss result of calculation of line loss according to the data of automatic data logging and manual entry.
In step S102, line loss management systems at different levels gather result, source book, the algorithm of subordinate's electrical network and extract;
In embodiments of the present invention, the line loss data that get access to are sent to pretreatment module in basic unit's application system, pretreatment module adopts hash algorithm that the line loss data that get access to are made a summary, and generates corresponding informative abstract; And the line loss data message that has successfully sent these line loss data that get access to and last time compared, extract the line loss data message that has changed, and the line loss data message that this has changed is compressed processing.Yet for the line loss data that do not have to change, perhaps the less line loss data (within the scope that sets in advance) of variation range do not need to send, and only need one and do sign.
In step S103, line loss at different levels administrative center utilizes the rapid line loss computing method to generate line loss analyzing result and form;
Pretreatment module is sent to communication module with the above-mentioned line loss data that changed, and communication module sends to higher level's line loss administrative center according to the normal structure data of relevant line loss management after the packing.
Fig. 3 shows the realization flow of the line loss management system line loss processing method of data that the embodiment of the invention provides, and details are as follows:
In step S201, line loss administrative center receives the line loss data that basic unit's application system sends over;
After line loss administrative center receives the complete line loss packet that basic unit's application system sends over,, the link layer and the application layer of data unpacked processing, extract application data according to the Standards Code of State Grid Corporation of China or Southern Power Grid Company.Line loss administrative center employing J2EE+WEBSERVICE+WEBLOGIC of the present invention constitutes, and the concurrent data that can bear 2～50,000 basic unit's application systems transmit.
In step S202, resolve described line loss data.
In embodiments of the present invention, adopt hash algorithm that the line loss data are handled, generate informative abstract,, decode real on-the-spot line loss data message then according to predefined processing rule.Wherein pretreated rule is preserved portion respectively in line loss administrative center and basic unit application system inside.If behind the rules modification, can be synchronized to basic unit's application system by GPRS network.
As one embodiment of the present invention, basic unit's application system transmission line loss data mode has administrative center's calling formula and two kinds of active transmission formulas, before adopting during a kind of mode, described line loss administrative center sends acquisition by predetermined condition to the communication module corresponding with basic unit's application system of needs monitoring, after corresponding communication module is received described acquisition, just carry out described step S101 and S102; When adopting a kind of mode in back, the communication module corresponding with basic unit's application system of needs monitoring initiatively sends the line loss data to line loss administrative center by predetermined condition, and when satisfying described predetermined condition, this communication module is initiatively carried out described step S101 and S102; Wherein said predetermined condition can be preset time at interval, and its size can be 1 minute-720 hours.
Fig. 4 shows the structure of the line loss management system that the embodiment of the invention provides, and this system mainly comprises basic unit's application system and line loss administrative center.
Basic unit's application system is obtained line loss data such as electric flux indication, the transformer of stoichiometric point, the electricity consumption of standing, bus balance according to on-the-spot automatic data logging and manual entry; And the line loss data that get access to are sent to pretreatment module in basic unit's application system, pretreatment module adopts hash algorithm that the line loss data that get access to are made a summary, and the line loss data message that has successfully sent these line loss data that get access to and last time compared, extract the line loss data message that has changed, and the line loss data message that this has changed is compressed processing.Yet for the line loss data that do not have to change, perhaps the less line loss data (within the scope that sets in advance) of variation range do not need to send, and only need one and do sign.Pretreatment module is sent to communication module with the above-mentioned line loss data that changed, and communication module is organized data according to the Standards Code of State Grid Corporation of China or Southern Power Grid Company, sends to line loss administrative center after the packing.After line loss administrative center receives the complete line loss packet that basic unit's application system sends over,, the link layer and the application layer of data unpacked processing, extract application data according to the Standards Code of State Grid Corporation of China or Southern Power Grid Company.Adopt hash algorithm that the line loss data are handled, generate informative abstract,, decode real on-the-spot line loss data message then according to predefined processing rule.Wherein pretreated rule is preserved portion respectively in line loss administrative center and basic unit application system inside.If behind the rules modification, can be synchronized to basic unit's application system by GPRS network.
Fig. 5 shows the structure of basic unit's application system that the embodiment of the invention provides, and for convenience of explanation, only shows part related to the present invention.
Describe the present invention below in detail.
Advanced mechanics of communication, computing machine and the network technology of line loss basic unit's application system utilization of the present invention, for electric power enterprise solve the stoichiometric point data automatic collection, manual entry, line loss data transmission, line loss analyzing, subregion examination, divide personnel checking-up, component voltage analysis, divide the circuit analysis, problem such as divide platform to distinguish to analyse, resist various possible high line loss problems with higher informationization technology and ladder of management, and in time find measurement loop fault and unusual line loss situation.
The present invention is intended to improve the automatization level and the reliability of the line loss management of transmission of electricity, distribution, electricity consumption link for power supply enterprise provides a kind of efficient, objective, stable, quasi real time the line loss analyzing and the means of management.And the high line loss problem of solution 10KV distrbution network of attaching most importance to, the high line loss problem of alleviating rural power grid provides the technical support platform.Realize the whole network each gather, electric energy numerical value such as total, the peak of metering, examination point, flat, paddy, sharp electric degree, and automatic, complete, accurate, safe, timely, reliable, flexible, perfect collection, transmission, storage, statistics, calculating, charging, analysis, audit, affirmation, management, backup, application, form, printing, the issue of bus balance, loss on transmission, the electricity consumption data of standing; But business change such as system's swap table, full scale, CT/PT modification and bypass for carry out automatically for situation, artificial treatment, critical point electric weight, line loss per unit, balanced ratio etc. are carried out quasi real time calculating, examination, supervision.Application of the present invention is mainly Utilities Electric Co.s at different levels.
As shown in Figure 6, during concrete enforcement, system of the present invention adopts from the regional branch office of the regional branch office of China Mobile or CHINAUNICOM and lays VPN (Virtual Private Network, virtual private networks) mode of special line couples together the power private network of Utilities Electric Co. and GPRS net or WCDMA net.Utilize Internet broadband public network as auxiliary alternate channel simultaneously.
The present invention has certain perspective on system architecture (adopt J2EE data service technology) and network organization mode (adopting wireless GPRS, CDMA2000 1x or WCDMA), take technology on the means of communication, with the advance of assurance system and the validity of investment.The not only compatible present GPRS of system design system of the present invention, and compatible later 3G communication.
Among the present invention, the transmission mode of line loss data has administrative center's calling formula and two kinds of active transmission formulas, before adopting during a kind of mode, line loss administrative center uses corresponding communication module by predetermined condition to the basic unit with the needs monitoring and sends acquisition, after corresponding communication module is received described acquisition, just send its current line loss data; When adopting a kind of mode in back, the communication module corresponding with basic unit's application system of needs collection initiatively sends the line loss data to line loss administrative center by predetermined condition, that is to say that when satisfying predetermined condition, this communication module initiatively sends the current line loss data of basic unit's application system; Predetermined condition wherein can be preset time at interval, and its size can be 1 minute-720 hours.
In whole process of data communication, adopt the TCP/IP communications protocol, the various middle layers of maskable agreement, the communication from basic unit's application system to line loss administrative center can be considered as the transmission of data wide area network.Owing to adopt data W EB method of service based on the J2EE framework, can avoid directly utilizing the Socket communication of bottom, the relevant international standard that meets HTTP1.1 and DATA Service, the data of transmission can be effectively by the various safety equipment in the wide area network, data are through digital signature simultaneously, and itself security and integrality also are guaranteed.
The concurrent transmission solution of data: the concurrent transmission of data is big bottlenecks of general distant place acquisition system, because a big system has the basic unit of huge amount to use (several ten thousand) in actual applications, guarantee that high prerequisite of adopting passband is that the communication that solves concurrent transmission is blocked.Platform of the present invention adopts the J2EE+Web service to constitute, be the data acquisition and the data, services releasing software framework based on J2EE framework basis of enterprise-level, this system can support concurrent transmission of high-intensity data and data, services, supports the mass data inquiry, has high practicality.
As shown in Figure 7, wherein include four big core technologies:
1, J2EE linked system: the J2EE linked system provides the standard card cage of the EIS system integration that exists in J2EE application and the enterprise.
2, JMS (Java information service): the Java information service is a standard program interface of supporting communication system for enterprise, and purpose is to provide the common interface of the dissimilar communication systems of leap.After java application utilized the communication system of JMS API and enterprise to be connected, the function that application program just can utilize communication system to provide was created and is sent message, reaches the purpose with other application system asynchronous communication.
3, JDBC API: it is the standard interface integrated with system R.Application program obtains other database function of database connection, data query and execution with this interface.
4, Web Services: allow EIS that some service access points are provided, new application can be obtained data by these points, also can submit data to.
The present invention carries out the pre-service of line loss data before adopting transmission line loss data, from basic unit's application system, read after the line loss data, utilize hash algorithm (Hash function) that the line loss data that needs send are handled earlier, generate corresponding informative abstract, because hash algorithm has the characteristic of unidirectional irreversible operation, promptly only can extrapolate informative abstract by transaction data, and can't oppositely extrapolate the content of transaction data by informative abstract, therefore the content of transaction data and informative abstract has relevance, and different transaction data contents can not calculate identical informative abstract, and we can be considered as informative abstract the transaction data feature of scaled-down version.
Utilize unique private key (abbreviation private key) of distributing to this communication module or being produced by this communication module then, the informative abstract that generates is carried out the mess code computing, it is any to generate corresponding electronics.The mess code computing is a suitable complex calculations process, because it is very high that it cracks difficulty, need more than tens thousand of years with present computer speed, as long as private key is not leaked, other people just can't forge the Electronic Signature corresponding with transaction data, therefore, the Electronic Signature that is generated can reach the customer identification function of traditional seal.
From the above, the present invention is based on GPRS, CDMA2000 1x or WCDMA communication modes and come Data transmission; And, solve concurrent collection bottleneck problem based on the data, services of J2EE framework, and the data, services and the data verification of the enterprise-level of powerful Web Data Service based on J2EE are provided, the concurrent data that can bear 2～50,000 basic unit's application systems transmit.Adopt the present invention, the operation cost of line loss management system is reduced greatly, make system really have practicality, improve the management automation level of Utilities Electric Co.s at different levels, promote the orderly development of power supply, distribution, electricity consumption each side.
In sum, the invention solves existing in the prior art should the overall monitor line loss, solve the complete and huge contradictory problems of calculated amount of stoichiometric point again, solve the problem that more easily causes network congestion when the line loss data simultaneously.To each basic unit's application system, before sending the line loss data by GPRS or cdma network, earlier the line loss data are carried out logic analysis, the line loss data message is reorganized, filter out redundant line loss data message, thereby make full use of limited Internet resources, avoid network congestion, make full use of the characteristics that GPRS charges by flow simultaneously, reduce communication fee, save cost.Wherein, main station system adopts the method for J2EE+WebService, uses the Weblogic middleware system, can monitor 2～50,000 basic units simultaneously and use, and adapts to domestic all nets, province, districts and cities and Utilities Electric Co. at county level.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of method of rapid line loss analyzing is characterized in that, said method comprising the steps of:
Subordinate's electrical network is carried out line loss to be calculated;
Line loss result to subordinate's electrical network filters;
Utilize the rapid line loss computing method to generate line loss analyzing result and form.
2, the method for rapid line loss analyzing as claimed in claim 1 is characterized in that, described line loss data can be the whole network loss, dividing potential drop line loss, line loss, the loss of platform district, the power consumption rate of standing, bus unbalance factor, transformer loss.
3, the method for rapid line loss analyzing as claimed in claim 1 is characterized in that, the described grid line loss result of subordinate is filtered comprises:
The line loss data of subordinate's electrical network are gathered and make a summary, generate corresponding informative abstract;
The line loss data message of these line loss data that get access to and preservation is compared, extract the line loss data message that has changed.
4, the method for rapid line loss analyzing as claimed in claim 3 is characterized in that, to the line loss data that do not change, does not perhaps need the data distinguished, does not extract, and only these data is identified.
5, a kind of method of rapid line loss analyzing is characterized in that, said method comprising the steps of:
Superior unit is at first obtained the line loss combined data of subordinate unit;
As required with relevant sign, but the source book of Automatic Extraction subordinate unit of system.
6, the method for rapid line loss analyzing as claimed in claim 5 is characterized in that, the described subordinate unit's line loss combined data of obtaining comprises:
According to the source book of grass-roots unit's typing, carry out tabulate statistics;
Local level Utilities Electric Co. carries out tabulate statistics according to the data of company at county level, or extracts the part source book and add up again;
Provincial Utilities Electric Co. carries out tabulate statistics according to the data of local level company, or the source book of extracting part region-by-region level company, or the source book of company at county level adds up again, finally obtains the line loss statistical conditions of the whole province.
7, the method for rapid line loss analyzing as claimed in claim 5, it is characterized in that, the described concrete steps that extract subordinate's source book are: adopt hash algorithm that the line loss data are handled, generate informative abstract, according to predefined processing rule, decode real on-the-spot line loss data message.
8, the method for rapid line loss analyzing as claimed in claim 5 is characterized in that, the described rapid line loss analyzing employing J2EE+WEBSERVICE+WEBLOGIC of system constitutes.
9, a kind of rapid line loss analyzing system is characterized in that described system comprises:
Basic unit's application system is used to obtain the source book that is used for line loss analyzing, and useless data is filtered;
Line loss analysis systems at different levels are used to collect down the combined data and the source book of level system, and carry out further statistics and analysis.
10 systems as claimed in claim 9 is characterized in that, described basic unit application system comprises:
Acquisition module is used to obtain the line loss source book;
Pretreatment module, be used to adopt hash algorithm that the line loss source book that gets access to is made a summary, generate corresponding informative abstract, and the line loss source book information that has successfully sent this line loss source book that gets access to and last time compared, extract the line loss source book information that has changed;
Compression module is used for the described line loss source book information that has changed is compressed processing;
Communication module is used to send the line loss source book.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718854A (en) * | 2009-11-27 | 2010-06-02 | 深圳市科陆电子科技股份有限公司 | Management method for ammeter in concentrator |
| CN102509161A (en) * | 2011-11-17 | 2012-06-20 | 广东电网公司深圳供电局 | Line loss four-Ins management system and partial pressure, bus and main modified line loss construction method therefor |
| CN107093897A (en) * | 2017-05-13 | 2017-08-25 | 国网安徽省电力公司芜湖供电公司 | A kind of distribution net platform region low pressure loss analysis method |
| CN108957142A (en) * | 2018-05-23 | 2018-12-07 | 安徽国电京润电力科技有限公司 | A kind of line loss detection automatic acquisition device and method |
| CN109633328A (en) * | 2018-12-25 | 2019-04-16 | 国网湖南省电力有限公司 | A kind of fixed line loss monitoring and analyzing system |
| CN110188122A (en) * | 2019-05-15 | 2019-08-30 | 电子科技大学 | A kind of association relationship analysis method between different line loss behaviors |
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2008
- 2008-12-12 CN CNA2008102183618A patent/CN101447049A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718854A (en) * | 2009-11-27 | 2010-06-02 | 深圳市科陆电子科技股份有限公司 | Management method for ammeter in concentrator |
| CN101718854B (en) * | 2009-11-27 | 2013-07-31 | 深圳市科陆电子科技股份有限公司 | Management method for ammeter in concentrator |
| CN102509161A (en) * | 2011-11-17 | 2012-06-20 | 广东电网公司深圳供电局 | Line loss four-Ins management system and partial pressure, bus and main modified line loss construction method therefor |
| CN107093897A (en) * | 2017-05-13 | 2017-08-25 | 国网安徽省电力公司芜湖供电公司 | A kind of distribution net platform region low pressure loss analysis method |
| CN108957142A (en) * | 2018-05-23 | 2018-12-07 | 安徽国电京润电力科技有限公司 | A kind of line loss detection automatic acquisition device and method |
| CN109633328A (en) * | 2018-12-25 | 2019-04-16 | 国网湖南省电力有限公司 | A kind of fixed line loss monitoring and analyzing system |
| CN110188122A (en) * | 2019-05-15 | 2019-08-30 | 电子科技大学 | A kind of association relationship analysis method between different line loss behaviors |
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Application publication date: 20090603 |