CN112886583A - Power utilization analysis method for users with abnormal line loss in distribution transformer area - Google Patents

Abstract

The invention discloses a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area, which comprises the following steps: respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area to acquire system data; diagnosing the acquired real-time data according to an intelligent diagnosis method of the metering loop, and finding out an abnormal state; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods; and displaying the result of the dynamic analysis through the basic checking terminal or the handheld intelligent terminal. The method can be suitable for all distribution areas within the range of national network companies, adopts the intelligent diagnosis technology of the metering loop, diagnoses the electric quantity parameters of residential users in the distribution areas through high-speed retrieval and intelligent section retrieval, locks users with abnormal electricity utilization states, and automatically identifies various high-tech electricity stealing modes such as shunting, electricity meter parameter changing, remote controllers and the like.

Description

Power utilization analysis method for users with abnormal line loss in distribution transformer area

Technical Field

The invention belongs to the technical field of power grids, and particularly relates to a power utilization analysis method for users with abnormal line loss in a distribution transformer area.

Background

The line loss rate is the percentage of the loss of the electric energy in the transmission process of the power grid to the electric energy supplied to the power grid, and is a main index for evaluating the loss level of the power grid. The line loss management and the calculation analysis have important significance for reducing line loss and improving economic benefits of enterprises in the power system.

The deficiencies of the line loss calculation method and means restrict the progress of the loss reduction work. Although remote acquisition of monitoring data of the power distribution network in partial areas of China is realized, an intelligent information system is developed, and a corresponding information system is developed aiming at information of power user sides at all levels, among the systems, because system developers and development initiatives are different, when the system is faced with the proposition of reducing the line loss of the power distribution network, how to coordinate the functions of each system, how to calculate the line loss value of the power distribution network, and how to guide the loss reduction practice of related departments still have certain difficulties in the present.

The line loss is divided into theoretical line loss and statistical line loss. The theoretical line loss is the unavoidable loss in the process of transmitting and distributing electric energy, is determined by the load condition of the power network and the parameters of the power supply equipment at that time, and the loss can be obtained through theoretical calculation, and mainly comprises the copper loss of overhead transmission lines, distribution lines and cable conductors of all levels of voltage, the copper loss of a transformer, the variable losses of iron losses of equipment such as a phase modulator, a voltage regulator, an electric reactor, a wave trapper, an arc suppression coil and the like. The statistical line loss is calculated according to the electric energy meter index and is the difference value between the power supply quantity and the power selling quantity. The difference value between the statistical line loss and the theoretical line loss is called management line loss, and particularly refers to other losses and various unknown losses in the actual operation of the power grid. For example, the reading of the electric energy meter is small because the electric energy meter of the user has errors; the reading of the user electric energy meter is missed, error calculation is carried out, the electric equipment has poor insulation and electric leakage, and the electric energy is lost when no electric energy meter is used and electricity is stolen.

In China, the power distribution network is lack of overall planning, the grid structure is relatively weak, the tree network is too many, power is basically supplied through overhead lines, the power supply range is large, and the power loss of the power distribution network is serious. Loss reduction of a power distribution network is one of main targets of energy-saving operation, loss of electric energy in the power distribution network is closely related to factors such as an operation mode, a network structure and a voltage grade of the whole power distribution network and is influenced by management levels such as scheduling, operation and maintenance, and calculation of theoretical line loss has guiding significance for loss reduction, energy saving, subdivision and accurate line loss management. In the prior art, the problem that line loss of a low-voltage transformer area is difficult to control is faced, and the problem that users who are difficult to screen suspicion of electricity stealing, line loss, troubleshooting difficulty and workload of troubleshooting workers are large are difficult to screen.

Disclosure of Invention

The invention mainly aims to solve the problems that line loss of a low-voltage transformer area is difficult to control and screen out users suspected of electricity stealing, line loss inspection difficulty is high, and workload of inspection workers is high, and provides a power utilization analysis method for users with abnormal line loss of a distribution transformer area.

In order to achieve the purpose, the invention adopts the technical scheme that:

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 steps:

respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area to acquire system data;

diagnosing the acquired real-time data according to an intelligent diagnosis method of the metering loop, and finding out an abnormal state; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods;

and displaying the result of the dynamic analysis through the basic checking terminal or the handheld intelligent terminal.

In one embodiment, according to the abnormal state, the dynamic analysis of the electric load of the user in different time periods comprises the following steps:

according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods by adopting a transformer area line loss analysis method; the transformer area line loss analysis method comprises the following steps: line loss anomaly analytic hierarchy process, high line loss analytic process, negative line loss analytic process, small-electric-quantity or slight negative line loss analytic process.

In one embodiment, a line loss anomaly analytic hierarchy process is adopted to perform dynamic analysis of the electric load of a user in different time periods, and the analysis comprises the following steps:

troubleshooting acquisition abnormity, troubleshooting user variation relation abnormity, troubleshooting metering device abnormity, troubleshooting electricity stealing/abnormal electricity utilization; wherein the troubleshooting metrology device anomalies comprises:

checking an examination table clock, checking examination table alarm information, checking an examination table junction box, checking an examination table current transformer and checking an examination table phase relation.

In one embodiment, a high line loss analysis method is adopted to perform dynamic analysis of the electrical load of a user in different time periods, and the 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: 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 checking meter is consistent with that of the mutual inductor or not; if the multiplying power is different, the master station modifies the flow;

the third step: checking the corresponding relation between the acquisition system and the marketing system and the users, and if the corresponding relation is inconsistent, synchronizing the acquisition point flow;

the fourth step: the master station thoroughly reads the electric quantity of the check meter and checks, and if the thoroughly read data is inconsistent with the frozen data, the terminal is replaced;

the fifth step: the master station analyzes the zero-degree user, thoroughly reads the data, and replaces the frozen data if the frozen data is inconsistent with the thoroughly read data; if the power consumption is consistent, the power consumption condition and wiring are verified on site;

and a sixth step: the master station exports the frozen data, and checks whether the frozen data exist or not, and the running of the electric meter is zero;

the seventh step: checking whether a management user which is not included exists or not on site, and checking through a line;

eighth step: verifying whether the user table file is complete on site;

the ninth step: and (4) exporting the frozen data, checking the zero-degree user with large electric quantity change, and checking whether the electricity stealing condition exists or not.

In one embodiment, a negative line loss analysis method is adopted to perform dynamic analysis of the electric load of a user in different time periods, and the method comprises the following steps:

(1) the meter is fully connected, and the integration power is ensured;

(2) 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; if the multiplying powers are not consistent, the master station modifies the flow;

(3) checking whether the current value of the check meter is normal or not and whether the reverse or current loss condition exists or not;

(4) checking the situation of the household meter, selecting a user with larger daily actual power consumption for checking, checking 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 same step (2);

(5) the master station thoroughly reads the electric quantity of the check meter and checks, and if the thoroughly read data is inconsistent with the frozen data, the terminal carries out replacement processing;

(6) the master station derives Dongjie data through meter reading data query, checks whether electric quantity suddenly increases users, thoroughly reads the data, and carries out replacement processing if inconsistency proves that the acquisition terminal has problems; if the user mutual inductor and the meter are consistent, checking the user mutual inductor and the meter on site for processing;

(7) and the master station checks that no problem exists, and verifies the wiring problem of the checking meter and the condition of the mutual inductor on site.

In one embodiment, the dynamic analysis of the user on the power load by time intervals is performed by using a small-power or slight negative line loss analysis method, which comprises the following steps:

1) the meter is fully accessed, and the acquisition success rate is ensured;

2) checking the precision of the examination and checking meter by checking the examination and checking meter on site, and determining whether the measurement is accurate or not;

3) and verifying the station area user-to-user relationship, judging whether a station fleeing area condition occurs, and if so, adjusting the flow.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area, which comprises the following steps: respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area to acquire system data; diagnosing the acquired real-time data according to an intelligent diagnosis method of the metering loop, and finding out an abnormal state; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods; and displaying the result of the dynamic analysis through the basic checking terminal or the handheld intelligent terminal. The method can be suitable for all distribution areas within the range of national network companies, adopts the intelligent diagnosis technology of the metering loop, diagnoses the electric quantity parameters of residential users in the distribution areas through high-speed retrieval and intelligent section retrieval, locks users with abnormal electricity utilization states, and automatically identifies various high-tech electricity stealing modes such as shunting, electricity meter parameter changing, remote controllers and the like.

Drawings

Fig. 1 is a flowchart of a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a diagnosis of a data checking instrument of an installation area according to an embodiment of the present invention;

FIG. 3 is a flow chart of an analytic hierarchy process employing line loss anomaly.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area includes:

s10, respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area, and collecting system data;

s20, diagnosing the acquired real-time data according to the intelligent diagnosis method of the metering loop, and finding out abnormal states; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods;

and S30, displaying the result of the dynamic analysis through a basic checking terminal or a handheld intelligent terminal.

The above steps will be described in detail below.

In step S10, the centralized management of multiple power supply areas in the same power supply area refers to selecting neighboring or associated power supply areas, performing centralized analysis, and performing centralized management in units of one cell or one village. Referring to fig. 2, station data check instruments are respectively installed at all the station concentrators to perform system data acquisition.

The implementation steps in S20 vary according to the analysis method of the line loss of the transformer area. The transformer area line loss analysis method comprises a line loss abnormal analytic hierarchy method, a high line loss analysis method, a negative line loss analysis method and a small electric quantity or slight negative line loss analysis method.

Line loss anomaly analytic hierarchy process: as shown with reference to fig. 3.

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 are not 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 amount of the station area, and for many negative loss station areas, the acquisition is caused by the abnormity of the general table. 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-loss transformer area, the reasons of electricity stealing, whether the power supply radius of an actual line is too long and the like can be considered; the negative loss station zone can consider the slight negative 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 like line loss after the analysis and determination of the front three layers and above are not wrong and the processing is finished, and can be managed 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, the treatment can be carried out layer by layer, the problem of line loss of most transformer areas can be basically solved by the first three layers, the transformer areas related to the fourth layer 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.

Small electric quantity or slight negative line loss analysis method: the specific steps are the same, and the process is as follows:

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-loss 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 method provided by the invention can realize the diagnosis of the transformer area with higher line loss rate and more complex condition, confirm the electricity stealing suspected user within 24 hours, judge the electricity stealing mode, and greatly improve the work efficiency of electricity inspection. The following principles are required for monitoring and analyzing the whole problems of the abnormal line loss distribution room:

1 practicality and feasibility

In order to ensure the practicability and feasibility of the equipment and highlight the practical requirements of the functions, the platform area data checker is small and convenient in design and can be installed in a charged mode, and unnecessary trouble and loss brought to power utilization customers by power failure operation are avoided.

2 reliability and safety

The station area data checking instrument meets the information safety requirement, is connected with the station area concentrator, directly diagnoses users with problems, and is safe and reliable.

3 timeliness and precision

The transformer area data checking instrument diagnoses suspects in batches within 24 hours, can accurately judge electricity stealing modes, and automatically obtains electricity stealing evidences, so that inspectors can carry out targeted inspection, and the line loss of the transformer area can be effectively reduced.

The invention provides a method for analyzing power consumption of users with abnormal line loss in a distribution transformer area, which comprises the following steps: respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area to acquire system data; diagnosing the acquired real-time data according to an intelligent diagnosis method of the metering loop, and finding out an abnormal state; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods; and displaying the result of the dynamic analysis through the basic checking terminal or the handheld intelligent terminal. The method can be suitable for all the transformer areas within the range of national network companies, and the problems of large transformer area quantity, complex customer electricity utilization condition and the like are considered, so that the traditional inspection working mode of inspectors is changed, the inspection working period is shortened, the working efficiency of the inspectors is effectively improved, the working burden of the inspectors is reduced, and the problem of insufficient personnel is thoroughly solved. The theft checking accuracy is improved, and the interference of the technical level of personnel is reduced; on the basis of the synchronous acquisition and analysis of data such as power supply quantity, power consumption quantity and the like, the traditional electricity stealing checking mode depending on the personal work experience of inspectors is changed into the mode of acquiring diagnosis results and analyzing abnormal behaviors on site, the data is comprehensively recorded, and the accuracy and the reliability of the data are ensured. The problems of inaccurate theft checking, omission of electricity stealing users and the like caused by only depending on personal working experience are solved, and the technical dependence on personnel is eliminated.

In addition, by adopting a metering loop intelligent diagnosis technology, the electric quantity parameters of residential users in a transformer area are diagnosed through high-speed retrieval and intelligent section retrieval, users with abnormal electricity utilization states are locked, and various high-tech electricity stealing modes such as shunting, electricity meter parameter changing, remote controllers and the like are automatically identified.

The equipment has strong innovativeness, and is used for completing the collection and reading of the electricity utilization information of the electric energy meter belonging to a transformer area through an artificial intelligence analysis technology and a big data analysis technology, rapidly screening electricity stealing suspects or users with abnormal metering through a power utilization information collection data analysis diagnosis model, prejudging an electricity stealing mode, estimating the loss electric quantity, automatically generating a collection condition unified report and an electricity stealing abnormality analysis result, assisting electricity utilization inspectors to rapidly and effectively check electricity stealing and rapidly reduce the line loss of the transformer area.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (6)

1. A power utilization analysis method for users with abnormal line loss in a distribution transformer area is characterized by comprising the following steps: the method comprises the following steps:

respectively installing a transformer area data check instrument at all transformer area concentrators in the same power supply area to acquire system data;

diagnosing the acquired real-time data according to an intelligent diagnosis method of the metering loop, and finding out an abnormal state; according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods;

and displaying the result of the dynamic analysis through the basic checking terminal or the handheld intelligent terminal.

2. The method for analyzing the abnormal line loss of the distribution transformer area for the power utilization of the users as claimed in claim 1, wherein the method comprises the following steps: according to the abnormal state, the dynamic analysis of the electric load of the user in different time periods comprises the following steps:

according to the abnormal state, performing dynamic analysis on the electric load of the user in different time periods by adopting a transformer area line loss analysis method; the transformer area line loss analysis method comprises the following steps: line loss anomaly analytic hierarchy process, high line loss analytic process, negative line loss analytic process, small-electric-quantity or slight negative line loss analytic process.

3. The method for analyzing the abnormal line loss of the distribution transformer area for the power utilization of the users as claimed in claim 2, wherein the method comprises the following steps: adopt the unusual analytic hierarchy process of line loss, carry out the dynamic analysis of electric load timesharing to the user, include:

troubleshooting acquisition abnormity, troubleshooting user variation relation abnormity, troubleshooting metering device abnormity, troubleshooting electricity stealing/abnormal electricity utilization; wherein the troubleshooting metrology device anomalies comprises:

checking an examination table clock, checking examination table alarm information, checking an examination table junction box, checking an examination table current transformer and checking an examination table phase relation.

4. The method for analyzing the abnormal line loss of the distribution transformer area for the power utilization of the users as claimed in claim 2, wherein the method comprises the following steps: the method for analyzing the electric load dynamic in different time periods by adopting a 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: 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 checking meter is consistent with that of the mutual inductor or not; if the multiplying power is different, the master station modifies the flow;

the third step: checking the corresponding relation between the acquisition system and the marketing system and the users, and if the corresponding relation is inconsistent, synchronizing the acquisition point flow;

the fourth step: the master station thoroughly reads the electric quantity of the check meter and checks, and if the thoroughly read data is inconsistent with the frozen data, the terminal is replaced;

the fifth step: the master station analyzes the zero-degree user, thoroughly reads the data, and replaces the frozen data if the frozen data is inconsistent with the thoroughly read data; if the power consumption is consistent, the power consumption condition and wiring are verified on site;

and a sixth step: the master station exports the frozen data, and checks whether the frozen data exist or not, and the running of the electric meter is zero;

the seventh step: checking whether a management user which is not included exists or not on site, and checking through a line;

eighth step: verifying whether the user table file is complete on site;

the ninth step: and (4) exporting the frozen data, checking the zero-degree user with large electric quantity change, and checking whether the electricity stealing condition exists or not.

5. The method for analyzing the abnormal line loss of the distribution transformer area for the power utilization of the users as claimed in claim 2, wherein the method comprises the following steps: the method for analyzing the negative line loss is adopted to carry out dynamic analysis on the electric load of a user in different time periods, and comprises the following steps:

(1) the meter is fully connected, and the integration power is ensured;

(2) 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; if the multiplying powers are not consistent, the master station modifies the flow;

(3) checking whether the current value of the check meter is normal or not and whether the reverse or current loss condition exists or not;

(4) checking the situation of the household meter, selecting a user with larger daily actual power consumption for checking, checking 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 same step (2);

(5) the master station thoroughly reads the electric quantity of the check meter and checks, and if the thoroughly read data is inconsistent with the frozen data, the terminal carries out replacement processing;

(6) the master station derives Dongjie data through meter reading data query, checks whether electric quantity suddenly increases users, thoroughly reads the data, and carries out replacement processing if inconsistency proves that the acquisition terminal has problems; if the user mutual inductor and the meter are consistent, checking the user mutual inductor and the meter on site for processing;

(7) and the master station checks that no problem exists, and verifies the wiring problem of the checking meter and the condition of the mutual inductor on site.

6. The method for analyzing the abnormal line loss of the distribution transformer area for the power utilization of the users as claimed in claim 2, wherein the method comprises the following steps: the method for analyzing the small electric quantity or the slight negative line loss is adopted to carry out dynamic analysis on the electric load of a user in different time periods, and comprises the following steps:

1) the meter is fully accessed, and the acquisition success rate is ensured;

2) checking the precision of the examination and checking meter by checking the examination and checking meter on site, and determining whether the measurement is accurate or not;

3) and verifying the station area user-to-user relationship, judging whether a station fleeing area condition occurs, and if so, adjusting the flow.

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