CN112865321A - Distribution transformer area line loss abnormity user positioning analysis system - Google Patents

Distribution transformer area line loss abnormity user positioning analysis system Download PDF

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Publication number
CN112865321A
CN112865321A CN202110231212.0A CN202110231212A CN112865321A CN 112865321 A CN112865321 A CN 112865321A CN 202110231212 A CN202110231212 A CN 202110231212A CN 112865321 A CN112865321 A CN 112865321A
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China
Prior art keywords
line loss
data
terminal
utilization information
unit
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CN202110231212.0A
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Chinese (zh)
Inventor
武利革
高舒
齐建军
王艺峰
贺治国
孙静
孙倩
南洋
李伟
孙雄伟
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Baoding Haoyuan Electric Technology Co ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Baoding Haoyuan Electric Technology Co ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Priority to CN202110231212.0A priority Critical patent/CN112865321A/en
Publication of CN112865321A publication Critical patent/CN112865321A/en
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    • 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
    • H02J13/00006—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 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—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 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • 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
    • Y04S40/126—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 using wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a distribution transformer area line loss abnormal user positioning analysis system which comprises a power consumption information acquisition terminal, a master station and a remote monitoring terminal, wherein the power consumption information acquisition terminal is connected with the master station through a wireless communication module; the power utilization information acquisition terminal is used for acquiring power utilization information of low-voltage users in the distribution transformer area; the central station is used for receiving the electricity utilization information transmitted by the electricity utilization information acquisition terminal, processing and analyzing the electricity utilization information, and sending a processing and analyzing result and the electricity utilization information to the remote monitoring terminal; and the remote monitoring terminal is used for remotely monitoring the electricity utilization information and the processing and analyzing result of the central station. The method and the device can quickly and accurately locate the users with abnormal line loss in a short time, save a large amount of manpower, material resources and financial resources and greatly improve the working efficiency.

Description

Distribution transformer area line loss abnormity user positioning analysis system
Technical Field
The invention belongs to the technical field of distribution room line loss management, and particularly relates to a distribution transformer room line loss abnormal user positioning analysis system.
Background
The loss that the unusual line loss in transformer district caused accounts for the most of transformer district loss, so to the unusual user location analysis work of loss be the important way of effectively reducing the transformer district loss, the transformer district is as the end of whole power supply network, and it is heavy to reduce the work of losing, and inefficiency is the difficult problem that can't solve in all electricity inspection personnel that put all the time: (1) the personnel allocation is insufficient: the number of the transformer areas is huge, the distribution range of the transformer areas is large, and the number of the current electricity utilization inspection personnel is seriously insufficient. (2) The customers increase year by year: in recent years, with the increasing living standard of people, the number of electricity customers increases year by year, and the electricity consumption of low-voltage customers increases at a speed of more than ten percent every year. (3) Behind the loss reduction technology: at present, loss reduction can only adopt a mode of people-sea tactics and household-by-household investigation, a large amount of manpower, material resources and financial resources are consumed, the efficiency is low, the electricity utilization inspection work is just like a sea fishing needle, and the difficulty is very high.
Therefore, how to provide a user positioning analysis system for abnormal line loss of a distribution transformer area is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a distribution transformer area line loss abnormal user positioning analysis system, which can quickly and accurately position a line loss abnormal user in a short time, save a large amount of manpower, material resources and financial resources, and greatly improve the working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a distribution transformer area line loss abnormity user positioning analysis system comprises: the system comprises a power consumption information acquisition terminal, a master station and a remote monitoring terminal, wherein the power consumption information acquisition terminal is connected with the master station through a wireless communication module, and the master station is connected with the remote monitoring terminal through a wireless communication module;
the power utilization information acquisition terminal is used for acquiring power utilization information of low-voltage users in the distribution transformer area;
the central station is used for receiving the electricity utilization information transmitted by the electricity utilization information acquisition terminal, processing and analyzing the electricity utilization information, and sending a processing and analyzing result and the electricity utilization information to the remote monitoring terminal;
and the remote monitoring terminal is used for remotely monitoring the electricity utilization information and the processing and analyzing result of the central station.
Preferably, the power consumption information collecting terminal includes: the meter box terminal is connected with the centralized meter reading terminal, and the centralized meter reading terminal is connected with the topology terminal; the meter box terminal is used for completing data acquisition of the electric meter; the centralized meter reading terminal is used for collecting the electric meter data collected by the meter box terminals in a centralized manner; and the topology terminal is arranged at each node of the power distribution transformer area and is bound with the target transformer area.
Preferably, the topology terminal comprises an MCU chip, an electric quantity metering module and an automatic topology module; the electric quantity metering module and the automatic topology module are connected with the MCU chip, the MCU chip is connected with the master station through the wireless communication module, receives a data monitoring instruction sent by the master station, and uploads power utilization information to the master station; and the automatic topology module is connected with the centralized meter reading terminal and generates a complete topology relation graph of the distribution transformer area according to the topology identification instruction issued by the MCU chip.
Preferably, the central station comprises a data processing module and an operation management module, wherein the data processing module is used for processing and analyzing the power consumption information, judging whether the monitored node has a line loss abnormal phenomenon, and positioning the monitored node; and the operation management module provides a corresponding solution according to the processing and analyzing result of the data processing module.
Preferably, the data processing module comprises a data processor, a data memory, a data calling unit, a data comparing unit and a judging unit, wherein the data memory receives the electricity utilization information sent by the data processor and stores the electricity utilization information in a database; the data calling unit is used for calling the standard electricity utilization data in the database and sending the standard electricity utilization data to the data comparison unit; the data comparison unit is used for comparing the power utilization information sent by the data processor with standard power utilization data and sending a comparison result to the judgment unit; the judging unit is used for judging whether the monitored node has the line loss abnormal phenomenon or not according to the comparison result and feeding back the judgment result to the data processor; and the data processor positions the users with abnormal line loss according to the topological relation graph and the judgment result.
Preferably, the operation management module comprises a statistical unit, a report generation unit, a line loss abnormity classification unit and a scheme making unit; the statistical unit is used for performing statistical analysis on key links in the power supply and utilization process and processing and analyzing results of the data processing module; the report generation unit generates a modular report according to the statistical result of the statistical unit; the line loss abnormity classification unit classifies and arranges abnormal line loss conditions according to the processing and analyzing result of the data processing module; and the scheme making unit is used for providing corresponding solutions for different types of line loss abnormal conditions.
Preferably, the line loss abnormal conditions are divided into two categories: high line loss problem and negative line loss problem, wherein high line loss problem includes: the problems of wrong household transformation relation, faults of metering devices and the like, electricity stealing and acquisition; the negative line loss problem includes: the problem of the error of the household variable relationship, the fault of the metering device and the acquisition problem.
Preferably, a line loss abnormal analytic hierarchy process, a high line loss analytic process, a negative line loss analytic process, and a small-power or slight negative line loss analytic process are adopted to analyze the line loss abnormal condition, so as to obtain a solution.
The invention has the beneficial effects that:
the power consumption information of low-voltage users in the distribution transformer area is acquired through the power consumption information acquisition terminal; the central station processes and analyzes the electricity utilization information, and sends a processing and analyzing result and the electricity utilization information to the remote monitoring terminal; the remote monitoring terminal is used for remotely monitoring the power utilization information and the processing and analyzing result of the central station, can quickly and accurately position the users with abnormal line loss in a short time, saves a large amount of manpower, material resources and financial resources, and greatly improves the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the electricity consumption information acquisition terminal according to the present invention.
Fig. 3 is a schematic structural diagram of the central station of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a distribution transformer area line loss abnormal user positioning analysis system, which includes: the system comprises a power consumption information acquisition terminal, a master station and a remote monitoring terminal, wherein the power consumption information acquisition terminal is connected with the master station through a wireless communication module, and the master station is connected with the remote monitoring terminal through a wireless communication module;
the power utilization information acquisition terminal is used for acquiring power utilization information of low-voltage users in the distribution transformer area;
the central station is used for receiving the electricity utilization information transmitted by the electricity utilization information acquisition terminal, processing and analyzing the electricity utilization information, and sending a processing and analyzing result and the electricity utilization information to the remote monitoring terminal;
and the remote monitoring terminal is used for remotely monitoring the electricity utilization information and the processing and analyzing result of the central station.
Referring to fig. 2, in this embodiment, the power consumption information acquiring terminal includes: the meter box terminal is connected with the centralized meter reading terminal, and the centralized meter reading terminal is connected with the topology terminal; the meter box terminal is used for completing data acquisition of the electric meter; the centralized meter reading terminal is used for collecting the electric meter data collected by the meter box terminals in a centralized manner; and the topology terminal is arranged at each node of the power distribution transformer area and is bound with the target transformer area.
The topology terminal comprises an MCU chip, an electric quantity metering module and an automatic topology module; the system comprises an electric quantity metering module, an automatic topology module, a master station, a wireless communication module, an MCU chip, a power utilization information acquisition module and a power utilization information acquisition module, wherein the electric quantity metering module and the automatic topology module are both connected with the MCU chip, and the MCU chip is connected with the master station through the wireless communication module, receives a data monitoring instruction sent by the master station and uploads power utilization information to the master station; the automatic topology module is connected with the centralized meter reading terminal and generates a complete topology relation graph of the distribution and transformation station area according to a topology identification instruction issued by the MCU chip; the electric quantity metering module is connected with the centralized meter reading terminal, has a bidirectional metering function, can meter forward and reverse electric quantity simultaneously, and the current sampling of the electric quantity metering module uses the pincerlike current transformer, and the voltage sampling adopts direct connection with the power line, and simultaneously the pincerlike current transformer and the voltage line can be used for the signalling and sampling of the automatic topology module during operation.
Referring to fig. 3, in this embodiment, the central station includes a data processing module and an operation management module, where the data processing module is configured to process and analyze the power consumption information, determine whether a line loss abnormality occurs in a monitored node, and locate the monitored node; and the operation management module provides a corresponding solution according to the processing and analyzing result of the data processing module.
The data processing module comprises a data processor, a data memory, a data calling unit, a data comparison unit and a judgment unit, wherein the data memory receives the electricity utilization information sent by the data processor and stores the electricity utilization information in a database, and standard electricity utilization data are stored in the database in advance; the data calling unit is used for calling the standard electricity utilization data in the database and sending the standard electricity utilization data to the data comparison unit; the data comparison unit is used for comparing the power utilization information sent by the data processor with the standard power utilization data and sending a comparison result to the judgment unit; the judging unit is used for judging whether the monitored node has the line loss abnormal phenomenon or not according to the comparison result and feeding back the judgment result to the data processor; and the data processor is used for respectively carrying out line loss accounting on the whole distribution area, each branch and each node according to the topological relation graph and the judgment result, automatically identifying the branch or line with abnormal line loss, and addressing and positioning the nodes through the station table information addressing device, so that the positioning of users with abnormal line loss is realized.
The operation management module comprises a statistical unit, a report generation unit, a line loss abnormity classification unit and a scheme making unit; the statistical unit is used for performing statistical analysis on key links in the power supply and utilization process and processing and analyzing results of the data processing module; the report generation unit generates a modular report according to the statistical result of the statistical unit, and the information which needs to be known can be accurately mastered through the remote monitoring terminal; the line loss abnormity classification unit classifies and arranges abnormal line loss conditions according to the processing and analyzing result of the data processing module; and the scheme making unit is used for providing corresponding solutions for different types of line loss abnormal conditions.
In this embodiment, the line loss abnormal conditions are divided into two types: high line loss problem and negative line loss problem, wherein high line loss problem includes: the problem of wrong household transformation relation, the problem of faults of metering devices and the like, the problem of electricity stealing and the problem of collection.
(1) Error of user-variant relationship: the number of the system archive users is inconsistent with the number of the actual field users, and is mainly caused by power consumption counting errors or meter reading failures due to the fact that cross-distribution areas exist in the user electric energy meter (the field users use power in the distribution area A, and the system archives are hung in the distribution area B, so that the distribution area A consumes less power). The system file is inconsistent with the site (commonly called black house), the marketing or acquisition system file is asynchronous with the site, and the file information lags behind the conditions of site meter changing and household establishment, so that the metering of less electric quantity is caused.
(2) One type of failure of the metering device: multiplying power of the electric energy meter under the transformer area (a master meter and a user electric energy meter), and system files are not consistent with actual multiplying power on site: the equipment in the transformer area is aged (the reactive compensation is insufficient), so that the power factor is low, and the loss of the transformer area is increased; the internal faults, burning and electricity selling quantity of the user electric energy meter under the platform area are different; when a mutual inductor of the user electric energy meter is damaged and no current exists for the second time or the current is small, the power consumption in a transformer area is small; the meter under the transformer district sends out the ultra-capacity electricity consumption, so that the actually generated electricity quantity is not counted (the calculation mode is that the electricity consumption exceeds the threshold value of 'transformer (user) capacity 24 x 2 x days'); the old and damaged power supply circuit causes the leakage of the circuit and the loss of the power supply quantity; the three-phase load distribution of the transformer area is unbalanced, and the power distribution loss is increased.
(3) Electricity stealing: the power utilization is mainly realized by private wiring of users under the distribution area on a distribution line or bypassing a metering device. The electricity stealing in the urban network platform area is generally concentrated on users with larger electricity consumption, such as temporary electricity consumption in shops, hotels, residential property, entertainment places, construction sites and the like along streets, and a small part of the users steal electricity for residents. The electricity stealing in the rural power grid area is mainly temporary electricity utilization such as private wiring of residents, house covering, irrigation and the like.
(4) The collection problem is as follows: if the data of the user electric energy meter in the lower part of the platform area fails to be collected for a long time, the collection system can adopt the full electric quantity or use incomplete data for statistics; the parameter setting of the electric energy meter in the acquisition system is wrong, so that the electric quantity has deviation from the actual electric quantity.
The negative line loss problem includes: the problem of the error of the household variable relationship, the fault of the metering device and the acquisition problem.
Firstly, error of user variable relation: the number of the system archive users is inconsistent with the number of the actual field users, and is mainly caused by power consumption counting errors or meter reading failures due to the fact that cross-distribution areas exist in the user electric energy meter (the field users use power in the distribution area A, and the system archives are hung in the distribution area B, so that the distribution area A consumes less power). The system file is inconsistent with the site (commonly called black house), the marketing or acquisition system file is asynchronous with the site, and the file information lags behind the conditions of site meter changing and household establishment, so that the metering of less electric quantity is caused.
The second type of faults of the metering device mainly comprise:
and A, the multiplying power of a general meter or a user electric energy meter of the marketing and acquisition system is inconsistent with the site (mainly, the multiplying power of a mutual inductor system of the general meter is smaller than the actual multiplying power of the site, or the multiplying power of a file of the user mutual inductor is larger than the actual multiplying power of the site). And B, wiring error of a station area general table: common zero line sharing, current outgoing line interconnection, three-phase mutual inductor interconnection, three-phase outgoing line interconnection of the electric energy meter, reverse connection of current polarity and virtual connection of secondary voltage of the general meter. And C, the current connection of the junction box is wrong or the junction box is damaged, so that the current short circuit and virtual connection are caused. D, clock deviation of the electric energy meter (the clock of the user meter is later than the clock of the general meter) causes the general meter to freeze data before the user electric energy meter. And E, connecting the electricity utilization of the user before the table area general table, so that part of the electricity utilization amount is not counted in the table area general table. The F transformer is unreasonable in configuration (the field operation load cannot meet the configuration requirement), and a small negative line loss situation of a transformer area is usually caused. G three-phase load imbalance (one of the currents in the summary table exceeds the rated value or three-phase imbalance is much larger than the standard value (15%), which causes small negative line loss in the transformer area.
Problem collection: corresponding to the user who fails in collection, the collection system can carry out system completion on the user electric energy meter base codes which are not collected, and the situation that the completion data are larger than the actual data in the field can occur in the completion process.
In this embodiment, a line loss abnormal analytic hierarchy process, a high line loss analytic process, a negative line loss analytic process, and a small-power or slight negative line loss analytic process are used to analyze the line loss abnormal condition, so as to obtain a solution.
Line loss anomaly analytic hierarchy process:
the line loss of the transformer area of the management and acquisition system is mainly managed layer by layer in a mode from easy to obtain and from appearance to essence, and the line loss of the transformer area is managed layer by layer in a targeted mode in a form of a work order.
The first step is as follows: and checking and collecting abnormity. The acquisition success rate of the user meter is a necessary condition for guaranteeing real and effective synchronous line loss of the transformer area. The problem appearance is that the coverage rate and the acquisition integrated power of the subscriber list in the station area do not reach the standard, and the station area cannot realize daily online monitoring. Firstly, the coverage rate and the acquisition success rate of the intelligent meter are improved, meters which are continuously failed to read the meter for 7 days are checked on site, and the wiring condition of the meters is checked or the meters are replaced. The acquisition success rate is ensured, and the electricity selling quantity in the same period is more real and has more reference value.
The second step is that: and checking the abnormal user change relationship. On the premise of ensuring the acquisition success rate of the household table and the examination table, after the data of the synchronous line loss of the transformer area is ensured to be real and effective, if the line loss is still abnormal, whether the household variation relation of the transformer area is correct is considered at first.
The problem expression is that the line loss of the transformer area is abnormal, the online monitoring condition is met, and the problem does not exist in the examination table. The processing method includes that whether the user change relationship in the GS186 system and the acquisition system is consistent needs to be verified firstly. Under the condition that the consistency of the two systems is ensured, the line loss is still abnormal, the accuracy of the user variable relation needs to be verified on site, and whether the line loss is abnormal due to the error of the user variable relation is judged.
The third step: and (5) checking the abnormality of the metering device. The metering exception comprises a station area assessment total table and a user table exception. The successful acquisition of the examination table is a necessary condition for ensuring the power supply quantity of the transformer area, and for many negative line loss transformer areas, the examination table is caused by abnormal summary tables. The summary table exception comprises pressure loss, flow loss, low power factor, inconsistent multiplying power and the like. For the negative line loss distribution area, the factors on the side of the summary table can be preferably considered, and all index data of the summary table need to be comprehensively checked when the summary table is checked. The problem that the metering device of a user with large electric quantity in the station area is abnormal is mainly solved, and the common problems of the metering device are as follows: the voltage loss, the undervoltage, the clock abnormality, the battery undervoltage, the current loss, the reverse phase sequence and the like can be guided to eliminate the defects on site according to the metering abnormal meter information pushed by the metering device intelligent diagnosis and online monitoring system.
3.1) checking the clock of the test table. And browsing the electric meter panel to find out whether the clock and date items are correct or not. Clock errors can cause that freezing time of the bottom of the freezing table and the sub-table hanging under the platform area are not uniform, so that system line loss calculation errors are caused.
And 3.2) checking the alarm information of the examination table. Whether the warning signal lamp on the electric meter panel is lighted or not is checked, if the warning signal lamp is lighted, an error code on a liquid crystal screen is searched: typical errors such as ERR-08 time error, ERR-56 active direction change (except for bidirectional metering) can cause line loss calculation error.
3.3) checking the junction box of the examination table. Firstly checking whether the voltage and the current connecting sheet of the junction box are correct or not, and then checking whether the wiring with the concentrator is correct or not, wherein the voltage is connected in parallel, for example, a current line of a current loop connected with the concentrator is connected in series with a current line of an ammeter.
And 3.4) checking the current transformer of the checking meter. The primary side of the current transformer, the wire inlet side of the junction box and the wire outlet side of the junction box are clamped simultaneously through two clamp meters in sequence, and whether the transformation ratio of the transformer is correct or not and whether the internal wiring of the junction box is in virtual connection or not are checked by combining and simultaneously browsing corresponding items of a liquid crystal screen of the ammeter. Because of the measurement error caused by the load fluctuation, the two clamp meters are required to be simultaneously measured, the corresponding difference is required, the measuring range of the current secondary side clamp meter is shifted to a proper gear (2/20A) according to the actual condition, and the consistency is checked with the system file after the CT transformation ratio is checked.
And 3.5) checking the phase relation of the table. If the current displayed on the screen of the ammeter is a negative value or the total power is not the sum of three phase power components, the real phase relation needs to be checked through the phase volt-ampere meter.
The fourth step: and other problems such as electricity stealing/abnormal electricity utilization are eliminated. For the high-line-loss transformer area, the reasons of electricity stealing, whether the power supply radius of the actual line is too long and the like can be considered; the negative line loss station zone can consider the slight negative line loss problem of the station zone caused by the photovoltaic meter acquisition, the file problem and the meter comprehensive error, and the problem that the station zone U still shows abnormality if the line loss is still shown after the analysis and determination of the front three layers and above are not wrong and the treatment is finished can be treated from the following two aspects: firstly hang the ammeter down in the platform district and have the line loss that the action of stealing electricity or wrong wiring lead to unusual, mainly show for three-phase small power user voltage decompression is undervoltage, current shunting, single-phase table user zero live wire current unbalance, single-phase and three-phase user have uncapping record etc. and the wrong report information of ammeter should still be selected to the record of uncapping, has many times to uncap the warning and can judge for the wrong report if in the short time. The method can be used for on-site inspection by households or screening and reducing the inspection range by using a platform area diagnostic instrument, and then purposeful search can be carried out. And secondly, the phenomenon of no meter power utilization in private pull disorderly connection exists in the power supply range of the distribution area. After the inspection is completed and no abnormality is confirmed, the line loss is still higher than the theoretical value, and the sequential inspection of private branch and random connection or the gradual reduction of the inspection range by means of a portable low-voltage branch gateway meter can be considered.
The "line loss abnormality treatment analytic hierarchy process" needs to pay special attention to the treatment sequence during treatment. According to the principle of easiness before difficulty and difficulty after difficulty, the power supply station can be used as a unit to treat the power supply station layer by layer, the problem of line loss of most of the transformer areas can be basically solved by the first three layers, the transformer areas related to the fourth step are difficult to treat, and the transformer areas need to be treated one by one in combination with the site.
The high line loss analysis method comprises the following steps:
the first step is as follows: the meter is fully accessed, and the acquisition success rate is ensured.
The second step is that: and checking whether the multiplying power of the acquisition system is consistent with that of the marketing system or not, and checking whether the multiplying power of the examination meter is consistent with that of the mutual inductor or not. And if the multiplying power is different, the master station modifies the flow.
The third step: and checking the corresponding relation between the acquisition system and the marketing system and the user, and if the acquisition system and the marketing system are inconsistent, synchronizing the acquisition point flow.
The fourth step: and the master station checks the electric quantity of the check meter through reading, and if the data through reading is inconsistent with the frozen data, the terminal inquires about the data, and the terminal is replaced.
The fifth step: the master station analyzes the zero-degree user, thoroughly reads the data, if the frozen data is inconsistent with the thoroughly read data, the problem of the acquisition terminal is solved, the acquisition terminal is replaced, and if the frozen data is consistent with the thoroughly read data, the problems of power utilization condition, wiring and the like are verified on site.
And a sixth step: and the master station derives the frozen data, checks whether the meter problems exist, such as that the meter runs to zero suddenly, checks the meter problems on site and processes the meter problems in time.
The seventh step: whether non-incorporated management users (actual power utilization) exist or not is verified on site, and troubleshooting can be performed through line verification (mainly for troubleshooting public facilities and the like) or through a Dingxin meter searching technology.
Eighth step: and (4) verifying whether the user table file is complete or not on site, and determining the user variable relationship by using a station area identifier if the user table file is not contained in the adjacent station area table meter.
The ninth step: and (4) exporting the frozen data, checking the zero-degree user with large electric quantity change, checking whether the electricity stealing condition exists or not, and processing in time.
A negative line loss analysis method;
the first step is as follows: the meter is fully connected, and the integrated power is ensured.
The second step is that: and checking whether the multiplying power of the acquisition system is consistent with that of the marketing system, and checking the multiplying power of the examination table and the multiplying power of the mutual inductor.
And if the multiplying powers are not consistent, the master station modifies the flow.
The third step: and checking whether the current value of the check meter is normal or not and whether the reverse or current loss condition exists or not.
The fourth step: checking the situation of the household meter, selecting the user with larger daily actual power consumption for checking, checking the user with large power consumption, judging whether the multiplying power of the acquisition system is consistent with that of the marketing system or not, modifying the inconsistent master station, and checking the multiplying power method in the second step.
The fifth step: and the master station thoroughly reads the electric quantity of the check meter to check, and if the thoroughly read data is inconsistent with the frozen data, the problem of the terminal is indicated, and the terminal is replaced.
And a sixth step: the main station derives Dongjie data through meter reading data query, checks whether electric quantity suddenly increases users (electric meters run away), thoroughly reads by the main station, and if inconsistency proves that the acquisition terminal has problems, carries out replacement processing. And if the conditions of the user mutual inductor, the meter and the like are checked on site consistently, processing is carried out.
The seventh step: the master station checks that no problem exists, and the on-site checking checks the wiring problems (current loss, reverse connection, black and white screen of the check meter and the like) of the check meter and the condition of the mutual inductor.
A small-electric-quantity and slight negative line loss analysis method comprises the following steps:
the first step is as follows: the meter is fully accessed, and the acquisition success rate is ensured.
The second step is that: and (5) checking the checking meter on site to check the precision of the checking meter and determine whether the measurement is accurate or not.
The third step: and verifying the station area user-to-user relationship, judging whether a station fleeing area condition occurs, and if so, adjusting the flow.
The embodiment of the invention provides a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area, which comprises the following specific processes:
(1) and the low-voltage transformer area line loss abnormal full-problem monitoring and analyzing equipment is installed in the line loss abnormal transformer area, and the low-voltage transformer area line loss abnormal full-problem monitoring and analyzing equipment is installed in the high-voltage transformer area general meter box, so that the electricity stealing conditions of all users can be diagnosed and analyzed in batches.
(2) Starting the low-voltage transformer area line loss abnormity all-problem monitoring and analyzing equipment, actively diagnosing the electricity utilization condition of all users hung under the 24-hour diagnosis transformer area, locking suspected electricity stealing users, pre-judging electricity stealing positions and electricity stealing modes.
(3) Checking diagnosis result, processing electricity stealing user
After the equipment is installed for 1 day, electricity inspection personnel operate a platform area basic data analysis APP on a handheld intelligent terminal to check a diagnosis result on site, and an anti-electricity-stealing action is deployed.
(4) Purposeful to check electricity stealing and quickly reduce line loss rate
According to the diagnosis result, the electricity stealing can be checked on site, the time is saved by 90 percent compared with the prior art, and the work efficiency is greatly improved compared with the prior equipment without waiting on site.
The power consumption information of low-voltage users in the distribution transformer area is acquired through the power consumption information acquisition terminal; the central station processes and analyzes the electricity utilization information, and sends a processing and analyzing result and the electricity utilization information to the remote monitoring terminal; the remote monitoring terminal is used for remotely monitoring the power utilization information and the processing and analyzing result of the central station, can quickly and accurately position the users with abnormal line loss in a short time, saves a large amount of manpower, material resources and financial resources, and greatly improves the working efficiency. The system has obvious loss reduction effect, can greatly improve the existing working mode, obtains great economic benefit, obviously improves the working efficiency and brings good economic benefit for a power grid company; the reasonable and legal power utilization of users is standardized to a certain extent, the power supply order of a power grid company is guaranteed for maintaining social environment, a green power grid is built, the social influence is profound, and the effect of driving the propulsion of the stability of the society is achieved; the problems of complex operation, high difficulty in location, easy error and the like can be solved, the frequency of the staff of the power supply department going to the site is reduced, the operation and maintenance cost is saved, the location time of a high-line damage area is shortened, and the technical level of electricity utilization inspectors is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a distribution transformer area line loss anomaly user positioning analysis system which characterized in that includes: the system comprises a power consumption information acquisition terminal, a master station and a remote monitoring terminal, wherein the power consumption information acquisition terminal is connected with the master station through a wireless communication module, and the master station is connected with the remote monitoring terminal through a wireless communication module;
the power utilization information acquisition terminal is used for acquiring power utilization information of low-voltage users in the distribution transformer area;
the central station is used for receiving the electricity utilization information transmitted by the electricity utilization information acquisition terminal, processing and analyzing the electricity utilization information, and sending a processing and analyzing result and the electricity utilization information to the remote monitoring terminal;
and the remote monitoring terminal is used for remotely monitoring the electricity utilization information and the processing and analyzing result of the central station.
2. The system for positioning and analyzing the users with abnormal line loss in the distribution and transformation area according to claim 1, wherein the power utilization information acquisition terminal comprises: the meter box terminal is connected with the centralized meter reading terminal, and the centralized meter reading terminal is connected with the topology terminal; the meter box terminal is used for completing data acquisition of the electric meter; the centralized meter reading terminal is used for collecting the electric meter data collected by the meter box terminals in a centralized manner; and the topology terminal is arranged at each node of the power distribution transformer area and is bound with the target transformer area.
3. The distribution transformer area line loss abnormity user positioning analysis system according to claim 2, wherein the topology terminal comprises an MCU chip, an electric quantity metering module and an automatic topology module; the electric quantity metering module and the automatic topology module are connected with the MCU chip, the MCU chip is connected with the master station through the wireless communication module, receives a data monitoring instruction sent by the master station, and uploads power utilization information to the master station; and the automatic topology module is connected with the centralized meter reading terminal and generates a complete topology relation graph of the distribution transformer area according to the topology identification instruction issued by the MCU chip.
4. The system according to claim 3, wherein the central station comprises a data processing module and an operation management module, the data processing module is configured to process and analyze the power consumption information, determine whether the monitored node has the line loss abnormality phenomenon, and locate the monitored node; and the operation management module provides a corresponding solution according to the processing and analyzing result of the data processing module.
5. The system for positioning and analyzing users with abnormal line loss in the distribution and transformation station area according to claim 4, wherein the data processing module comprises a data processor, a data memory, a data retrieving unit, a data comparing unit and a judging unit, wherein the data memory receives the electricity utilization information sent by the data processor and stores the electricity utilization information in a database; the data calling unit is used for calling the standard electricity utilization data in the database and sending the standard electricity utilization data to the data comparison unit; the data comparison unit is used for comparing the power utilization information sent by the data processor with standard power utilization data and sending a comparison result to the judgment unit; the judging unit is used for judging whether the monitored node has the line loss abnormal phenomenon or not according to the comparison result and feeding back the judgment result to the data processor; and the data processor positions the users with abnormal line loss according to the topological relation graph and the judgment result.
6. The system for positioning and analyzing users with abnormal line loss in the distribution and transformation area according to claim 5, wherein the operation management module comprises a statistical unit, a report generation unit, a line loss abnormality classification unit and a scheme making unit; the statistical unit is used for performing statistical analysis on key links in the power supply and utilization process and processing and analyzing results of the data processing module; the report generation unit generates a modular report according to the statistical result of the statistical unit; the line loss abnormity classification unit classifies and arranges abnormal line loss conditions according to the processing and analyzing result of the data processing module; and the scheme making unit is used for providing corresponding solutions for different types of line loss abnormal conditions.
7. The system for positioning and analyzing users with abnormal line loss in the distribution and transformation area according to claim 6, wherein the abnormal line loss conditions are divided into two categories: high line loss problem and negative line loss problem, wherein high line loss problem includes: the problems of wrong household transformation relation, faults of metering devices and the like, electricity stealing and acquisition; the negative line loss problem includes: the problem of the error of the household variable relationship, the fault of the metering device and the acquisition problem.
8. The system of claim 7, wherein a solution is obtained by analyzing the abnormal line loss situation by using a line loss abnormal analytic hierarchy process, a high line loss analytic process, a negative line loss analytic process, and a small-power or slight negative line loss analytic process.
CN202110231212.0A 2021-03-02 2021-03-02 Distribution transformer area line loss abnormity user positioning analysis system Pending CN112865321A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113552399A (en) * 2021-06-10 2021-10-26 杭州华春科技有限公司 Multi-table set line loss phasing device and line loss phasing method
CN114942402A (en) * 2022-07-20 2022-08-26 武汉格蓝若智能技术有限公司 Abnormal electric energy meter positioning method and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113552399A (en) * 2021-06-10 2021-10-26 杭州华春科技有限公司 Multi-table set line loss phasing device and line loss phasing method
CN114942402A (en) * 2022-07-20 2022-08-26 武汉格蓝若智能技术有限公司 Abnormal electric energy meter positioning method and system
CN114942402B (en) * 2022-07-20 2022-11-29 武汉格蓝若智能技术有限公司 Abnormal electric energy meter positioning method and system

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