CN110737701A - automatic line loss statistical system for transformer substation - Google Patents

automatic line loss statistical system for transformer substation Download PDF

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Publication number
CN110737701A
CN110737701A CN201910994656.2A CN201910994656A CN110737701A CN 110737701 A CN110737701 A CN 110737701A CN 201910994656 A CN201910994656 A CN 201910994656A CN 110737701 A CN110737701 A CN 110737701A
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China
Prior art keywords
data
module
line loss
transformer substation
meter data
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CN201910994656.2A
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Chinese (zh)
Inventor
汪渊
阳江华
李安均
陈科
陈在新
张仁建
赵冲
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State Grid Sichuan Electric Power Co Ltd
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State Grid Sichuan Electric Power Co Ltd
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Priority to CN201910994656.2A priority Critical patent/CN110737701A/en
Publication of CN110737701A publication Critical patent/CN110737701A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
    • G06F16/2462—Approximate or statistical queries
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y—GENERAL 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol

Abstract

The invention discloses an transformer substation line loss automatic statistics system, which solves the problems of high labor cost, low efficiency, low accuracy and the like of manually inquiring, downloading, counting and checking a plurality of transformer substation electric meter data in the prior art.

Description

automatic line loss statistical system for transformer substation
Technical Field
The invention relates to the field of power distribution, in particular to an transformer substation line loss automatic statistics system.
Background
The line loss statistical work of the transformer substation is an important part of the operation work of a power grid, the line loss data is timely and accurately mastered by counting the electric quantity loss of important equipment such as a main transformer of the transformer substation, a bus and the like, and the important significance is provided for analyzing whether the operation mode of the power grid is reasonable and whether the working state of the equipment is normal or not.
Disclosure of Invention
Aiming at the characteristics of large workload and much data of transformer substation line loss statistics, the problems of low efficiency, high manpower demand and low accuracy rate of manual inquiry, download, statistics and analysis of the ammeter data of the transformer substation in the prior art are solved by adopting the transformer substation line loss automatic statistics system.
The automatic substation line loss statistics system comprises an inquiry module, a server, a download module, a storage module and a processing module;
the query module is used for querying ammeter data of the substation in the electric energy metering center server to obtain query information;
the downloading module is used for acquiring and downloading the ammeter data of the transformer substation in the electric energy metering center server according to the query information;
the processing module is used for processing the ammeter data downloaded by the downloading module;
the storage module is used for storing the ammeter data downloaded by the downloading module;
the server; the system is used for signal transmission among the line loss automatic statistical system modules;
the processing module is used for merging the latest electric meter data and the historical electric meter data to obtain merged data; the processing module counts the ammeter data according to the merged data to obtain statistical data; and the processing module calculates the line loss and the balance rate of the transformer substation according to the statistical data.
And the query module acquires the address information of the electric meter terminal of the transformer substation according to the address table on a query interface of the electric energy metering center server, and queries electric meter data.
The downloading module collects the electric meter data, exports the collected electric meter data in an Excel table form and stores the electric meter data in the storage module.
And the processor copies the content of the latest electric meter data into the Excel table of the historical electric meter data for the last times to complete data merging.
The processor screens and summarizes the merged data according to the table number, the power direction and the date to obtain the statistical data, and then the statistical data is subjected to error checking; and the processor calculates the line loss and the balance rate according to the statistical data, and then derives the balance rate by using an Excel table.
And , the query module acquires address information of the electric meter terminal of the transformer substation according to the address table, acquires electric meter data of the transformer substation according to the address information, and sends the query information to the server.
And , the server sends the query information to the download module, and the download module collects and downloads the latest electric meter data according to the query information and stores the latest electric meter data in the storage module.
And , the server sends the latest electric meter data and the last times of historical electric meter data to the processor according to the query information, and the system automatically calls the electric meter data, so that the efficiency is high.
And , the processor obtains the statistical data according to the electric meter number, the power direction and the data date of the transformer substation, and the system automatically completes the statistics of the electric meter data according to conditions, so that the speed is high and the accuracy is high.
, the balance rate includes main transformer balance rate and bus balance rate, the formula of balance rate is:
Figure BDA0002239362510000021
and , checking the statistical data according to the historical electric meter data of which the electric meter reading of the latest electric meter data is more than or equal to times, marking when a statistical error occurs, and then counting again.
And , sequencing and counting the absolute values of the balance rates of all the substations by the processor, and exporting the sequenced balance rates in a table form, wherein the balance rate value is 0% -1% in a normal range, the balance rate value exceeding 2% is obviously abnormal, and the line loss condition of each substations can be visually seen.
, the merged data is that the processor copies the latest meter data to the historical meter data of the last times, and the downloading module stores the meter data in a table form.
kinds of automatic statistical system of transformer substation line loss, the query module of the system inquires the electric meter data of the transformer substation in the electric energy metering center server as required, and sends the query result to the server, the server sends the result to the download module, the download module downloads the electric meter data of the corresponding transformer substation from the electric energy metering center server to the storage module according to the query information, the server sends the latest electric meter data and the latest historical electric meter data to the processing module, the processing module merges the latest electric meter data into the historical electric meter data, associates the electric meter number, the positive and negative power directions with the equipment according to the equipment number, and simultaneously carries out statistics on the merged electric meter data according to the three conditions of the electric meter number, the power direction and the data date, calculates the transformer substation line loss according to the statistical data, and according to the formula:
Figure BDA0002239362510000031
and calculating the balance rate according to a formula, and finally generating a balance rate absolute value table according to the balance rate absolute value of each transformer substation.
The invention has the following advantages and beneficial effects:
1. the invention is provided; through the query module, the download module and the processing module, the system automatically completes query, download and processing of the ammeter data, manpower resources are saved, and efficiency is high.
2. The invention is provided; the system is used for carrying out the line loss statistics of the transformer substation, so that unmanned operation is completely realized, the cost is saved, and the accuracy is also ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention, constitute a part of this application and do not constitute a limitation on embodiments of the invention, and wherein:
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a data web page diagram of the electric meter of the invention.
FIG. 3 is a diagram of a query interface in accordance with the present invention.
FIG. 4 is a diagram of data collection of the electric meter according to the present invention.
FIG. 5 is a data derivation chart of the electric meter of the present invention.
FIG. 6 is a diagram of a data table of an electric meter according to the present invention.
FIG. 7 is a graph of the data synthesis of the present invention.
FIG. 8 is a data lookup diagram according to the present invention.
FIG. 9 is a data statistics map of the present invention.
FIG. 10 is a data statistics chart of the present invention.
Fig. 11 is a line loss derivative graph of the present invention.
FIG. 12 is a flow chart of the present invention.
Detailed Description
Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," or "having" and their derivatives are intended to mean only the presence of the specified features, integers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding or more other features, integers, steps, operations, elements, components, or combinations of the foregoing, or adding or more features, integers, steps, operations, elements, components, or combinations of the foregoing.
For example, the expression "A or B" or "at least of A or/and B" may include A, may include B, or may include both A and B.
For example, the th and second user devices are indicative of different user devices, although both are user devices.
It should be noted that if it is described that component elements are "connected" to another component element, then component element may be directly connected to the second component element and a third component element may be "connected" between component element and the second component element conversely, when component element is "directly connected" to another component element, it is understood that no third component element is present between component element and the second component element.
As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present invention belong.
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in with reference to the following examples and accompanying drawings, wherein the exemplary embodiments and descriptions of the present invention are provided for illustration only and not for limitation of the present invention.
Example 1
kinds of automatic substation line loss statistical system.
As shown in fig. 1, the system comprises a server, an inquiry module, a download module, a storage module and a processing module, wherein the inquiry module inquires the electric meter data from the electric energy metering center server and sends the inquiry information to the server, the server sends the signal to the download module, the download module downloads the electric meter data from the electric energy metering center server and stores the electric meter data into the storage module, the server sends the latest electric meter data and the historical electric meter data in the storage module to the processor according to the inquiry information, and the processor combines, counts, calculates and exports the electric meter data.
As shown in fig. 2, 3, 4, 5 and 6;
, the system opens the data page to enter the data interface.
And secondly, reading the electric meter terminal address of the transformer substation from the address table by the query module, and querying the transformer substation.
And thirdly, after the transformer substation is selected by the query module, selecting equipment and date, and then downloading the data acquired by the module.
And fourthly, downloading data after the data are acquired by the downloading module, and downloading the latest electric meter data to the storage module in an excel table form.
As shown in fig. 7, 8 and 9, the processor copies the content of the latest electric meter data Excel table into the last electric meter data Excel table, then counts the electric meter data of the substation according to the meter number, the power direction and the date, after the data statistics is completed, checks the statistical data according to the fact that the electric meter reading of the latest electric meter data is greater than or equal to the last historical electric meter data, marks when the statistical error occurs, and then re-counts.
As shown in fig. 10 and 11, after the statistics of the electric meter data is completed, according to the formula:
Figure BDA0002239362510000051
and (3) solving the balance rate of the main transformer and the balance rate of the bus, sequencing the balance rates according to absolute values of the balance rates, and finally exporting data through an Excel table, wherein the balance rate is 0-1% and is in a normal range, and the balance rate exceeding 2% is obviously abnormal.
As shown in figure 12 of the drawings,
the method comprises the following steps that a query module queries electric meter data from an electric energy metering center server as required, then a download module collects the electric meter data according to equipment and date, the electric meter data are downloaded and stored after the collection is completed, then the latest electric meter data are merged into the latest historical electric meter data by a processing module, then the electric meter data are counted according to the electric meter number, the power direction and the data date of a transformer substation, the counted data are checked according to the characteristic that the electric meter reading of the latest electric meter data is larger than or equal to the historical electric meter data, and then the counted data are determined to be accurate and then are calculated according to a balance rate formula:
Figure BDA0002239362510000052
and calculating the bus balance rate and the main transformer balance rate, sequencing the absolute values of the bus balance rate and the main transformer balance rate, and then deriving the absolute values in a table form.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention have been described in , it should be understood that the above-mentioned embodiments are only illustrative and not intended to limit the scope of the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

  1. The system for automatically counting the line loss of the transformer substations is characterized by comprising an inquiry module, a server, a download module, a storage module and a processing module;
    the query module is used for querying ammeter data of the substation in the electric energy metering center server to obtain query information;
    the downloading module is used for acquiring and downloading the ammeter data of the transformer substation in the electric energy metering center server according to the query information;
    the processing module is used for processing the ammeter data downloaded by the downloading module;
    the storage module is used for storing the ammeter data downloaded by the downloading module;
    the server; the system is used for signal transmission among the line loss automatic statistical system modules;
    the processing module is used for merging the latest electric meter data and the historical electric meter data to obtain merged data; the processing module counts the ammeter data according to the merged data to obtain statistical data; and the processing module calculates the line loss and the balance rate of the transformer substation according to the statistical data.
  2. 2. The transformer substation line loss automatic statistics system of claim 1, wherein the query module obtains address information of a transformer substation electricity meter terminal according to an address table, obtains electricity meter data of a transformer substation according to the address information, and sends the query information to a server.
  3. 3. The system for automatically counting the line loss of substations according to claim 1, wherein the server sends the query information to the downloading module, and the downloading module collects and downloads the latest electric meter data according to the query information and stores the latest electric meter data in the storage module.
  4. 4. The system for automatically counting the line losses of the substations according to claim 1, wherein the server sends the latest meter data and the last times of historical meter data to the processor according to the query information.
  5. 5. The system for automatically counting the line losses of the substations of claim 1, wherein the processor obtains the statistical data according to the meter number, power direction and data date of the substation.
  6. 6. The transformer substation line loss automatic statistics system of claim 1, wherein the balance rate comprises a main transformer balance rate and a bus balance rate, the balance rate formula:
    Figure FDA0002239362500000011
  7. 7. the system for automatically counting line losses of substations according to claim 1, wherein the statistical data is checked according to whether the meter reading of the latest meter data is greater than or equal to the historical meter data times.
  8. 8. The transformer substation line loss automatic statistics system of claim 1, wherein the processor performs ranking statistics on absolute values of the balance rates of all transformer substations, and derives the ranked balance rates in a table form, the balance rate value is 0% -1% of a normal range, and the balance rate value exceeding 2% is an obvious anomaly.
  9. 9. The system of substation line loss automatic statistics of claim 1, wherein the consolidated data is that the processor copies the latest meter data to the historical meter data of last times.
CN201910994656.2A 2019-10-18 2019-10-18 automatic line loss statistical system for transformer substation Pending CN110737701A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102707156A (en) * 2012-06-08 2012-10-03 上海市电力公司 Method for finely and accurately comparing line losses based on smart-grid technology
CN107024641A (en) * 2017-03-29 2017-08-08 国网上海市电力公司 A kind of platform area line loss per unit exception monitoring system
CN108063493A (en) * 2017-12-25 2018-05-22 光科技股份有限公司 A kind of method and system of quick positioning low-voltage platform area line loss
CN110082645A (en) * 2019-05-28 2019-08-02 广东电网有限责任公司 A kind of area's stealing user's Check System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102707156A (en) * 2012-06-08 2012-10-03 上海市电力公司 Method for finely and accurately comparing line losses based on smart-grid technology
CN107024641A (en) * 2017-03-29 2017-08-08 国网上海市电力公司 A kind of platform area line loss per unit exception monitoring system
CN108063493A (en) * 2017-12-25 2018-05-22 光科技股份有限公司 A kind of method and system of quick positioning low-voltage platform area line loss
CN110082645A (en) * 2019-05-28 2019-08-02 广东电网有限责任公司 A kind of area's stealing user's Check System

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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