CN113063997A

CN113063997A - Distribution transformer area line loss abnormity problem monitoring method

Info

Publication number: CN113063997A
Application number: CN202110231773.0A
Authority: CN
Inventors: 郭彦廷; 阮涛; 郭臻; 王珺; 骆洪涛; 冯静; 张丽霞; 南洋; 李伟; 杜振坤; 蒋冬冬; 张万辉
Original assignee: Baoding Haoyuan Electric Technology Co ltd; Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Current assignee: Baoding Haoyuan Electric Technology Co ltd; Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-07-02

Abstract

The invention discloses a method for monitoring abnormal line loss problems of 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; determining the type of the line loss abnormal problem according to the abnormal state; and according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule. The method intelligently analyzes and diagnoses possible problems, provides reference suggestions for solving similar problems, further standardizes the management behavior of the line loss, improves the management level and finally effectively reduces the line loss rate. The method can realize the accurate positioning problem, provide a corresponding solution and improve the working efficiency.

Description

Distribution transformer area line loss abnormity problem monitoring method

Technical Field

The invention belongs to the technical field of power grids, and particularly relates to a method for monitoring abnormal line loss problems of 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, in general, an inspector needs 2-3 days to complete the whole platform area for carpet type inspection of a certain high-loss platform area, and the efficiency is low. Therefore, the problem of abnormal line loss of the distribution transformer area is monitored, and specific measures are taken aiming at specific problems, so that urgent solution is needed.

Disclosure of Invention

The invention mainly aims to solve the problem of monitoring the line loss abnormity of the distribution transformer area, and provides a method for monitoring the line loss abnormity of the 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 monitoring abnormal line loss problems of 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; determining the type of the line loss abnormal problem according to the abnormal state;

and according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule.

In one embodiment, determining the type of line loss anomaly problem according to the anomaly status comprises:

when the loss rate in the preset period exceeds a first preset threshold value, determining that the corresponding station area is a high-loss problem; the high line loss problem comprises: the problems of wrong household transformation relation, faults of metering devices and the like, electricity stealing and acquisition;

when the line loss rate in the preset period is lower than a second preset threshold value, determining that the corresponding transformer area is in the negative line loss problem; 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.

In one embodiment, according to the determined type of the abnormal problem, taking corresponding treatment measures against a preset rule includes:

when the determined abnormal problem is that the user variable relation is wrong, a plurality of power supply areas in the same power supply area are analyzed in a unified mode through a big data fuzzy algorithm, the fact that the user relation is completely consistent is guaranteed, or the user relation is automatically recognized through installing an intelligent diagnosis robot in the power supply areas.

In one embodiment, according to the determined type of the abnormal problem, taking corresponding treatment measures against a preset rule, further includes:

when the determined abnormal problem is a fault belonging to the metering device, analyzing the examination table multiplying power and the user table multiplying power respectively;

wherein, examination table multiplying power: estimating the multiplying power of a transformer to be configured according to the capacity of the transformer in a system file, and verifying a CT transformation ratio check instrument used on site;

user table multiplying power: and estimating whether the power consumption has a large error with the power consumption counted by the meter according to the user type and the power consumption condition.

In one embodiment, further comprising:

when the determined abnormal problem is a fault belonging to the metering device, performing background calling through the acquisition system, and checking whether the meter under the platform area has clock deviation; or carrying out background calling and testing through the acquisition system, and checking whether the three-phase load of the transformer area is balanced.

when the abnormal problem is determined to belong to electricity stealing, the intelligent diagnosis robot in the transformer area is installed, and whether the wiring of the intelligent electric energy meter under the transformer area is correct or not is automatically identified; whether the current and the voltage are normal or not.

when the determined abnormal problem belongs to the acquisition problem, the acquisition identification user firstly carries out system analysis, and whether the concentrator is hung wrongly, the electric energy meter transverse block is damaged and the system parameter setting is correct or not exists.

when the determined abnormal problem belongs to the second type of faults of the metering device, analyzing the checking table multiplying power and the user table multiplying power respectively;

In one embodiment, further comprising:

when the determined abnormal problem belongs to the second type of faults of the metering device, the voltage, the current, the power factor and the phase angle of the general meter are summoned in the acquisition system for analysis, and whether the wiring of the general meter has the problem or not is judged.

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

the invention provides a method for monitoring the abnormal line loss problem of 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; determining the type of the line loss abnormal problem according to the abnormal state; and according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule. The method intelligently analyzes and diagnoses possible problems, provides reference suggestions for solving similar problems, further standardizes the management behavior of the line loss, improves the management level and finally effectively reduces the line loss rate. The problem of accurate positioning is solved, a corresponding solution is provided, and the working efficiency is improved.

Drawings

Fig. 1 is a flowchart of a method for monitoring a line loss abnormality problem in a distribution transformer area according to an embodiment of the present invention;

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

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.

The reasons for influencing the line loss statistics of the transformer area are manifold, the inherent error of the electric energy computing equipment during the electric energy metering is obtained, and the total factor can be divided into two factors; one, intrinsic factor, i.e., computational management, can be broadly summarized as: three categories of household variation relationship, metering device failure, acquisition problem and the like; the other is the external factor, namely power management, which mainly comprises the operation of reading and the behavior of stealing electricity of customers. For specific abnormal reasons, referring to fig. 1, the invention provides a method for monitoring abnormal line loss problems in a distribution transformer area, which comprises the following steps:

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; determining the type of the line loss abnormal problem according to the abnormal state;

and S30, according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule.

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.

In the above steps S20-S30, the analysis and investigation schemes proposed by different line loss problem cooperation units mainly include the following two types: high loss problems and negative loss problems; and analyzing the two problems respectively to give corresponding treatment measures.

(1) High line loss problem and analyzing investigation of illegal features

The high-loss distribution area refers to an abnormal distribution area in which the synchronous line loss rate of the distribution area exceeds an index requirement (a first preset threshold value) in a preset period (for example, 24 hours, a week, a month and the like), and mainly shows two situations of long-term high loss and sudden high loss.

The main reasons for causing long-term high-loss transformer areas can be classified into 4 types: the problem of wrong household transformation relationship, metering device failure, electricity stealing and collection.

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.

The solution measures are as follows: a, a big data fuzzy algorithm is used for carrying out unified analysis on a plurality of power distribution areas in the same power supply area (the power consumption of a suspicious user can be calculated through analysis of system archive information, data in a concentrator, acquisition conditions and the like, and finally field check is carried out), so that the complete consistency of the power distribution areas must be ensured. And B, automatically identifying the relationship of the platform users by installing the platform area intelligent diagnosis robot. And C, checking the users who cannot determine the relationship of the station by the station area identifier. And D, for users with system files inconsistent with the site, the purposes of table loading on the same day and filing on the same day are achieved.

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.

The solution measures are as follows: examination table magnification: generally, the multiplying power of a transformer to be configured is estimated through the capacity of the transformer in a system file, and then a CT ratio check instrument used on site is verified to determine whether the multiplying power is wrong or the power load is not matched on site. User table multiplying power: and estimating whether the power consumption of the transformer is larger than the power consumption counted by the meter according to the type and the power consumption condition of the user, and checking whether the multiplying power is correct and whether the transformer is damaged on site. The mutual inductor must be verified before being installed, and the situation that the actual multiplying power of the mutual inductor is inconsistent with the nameplate label is avoided. And B, finding users with possible problems in meter metering in the operation and reading process, timely checking whether the meter has faults or is burnt out on site, if so, timely replacing the electric energy meter, and synchronizing operation and acquisition system files. C, calling and testing the meter in the background through the acquisition system, checking whether the meter under the platform area has clock deviation, and requesting an electric energy meter manufacturer to correct or replace a new electric energy meter if the meter under the platform area has the clock deviation. And D, carrying out background calling and testing through the acquisition system, and checking whether the three-phase load of the transformer area is balanced. And E, the old and damaged conditions of the field power supply line exist, the old and damaged conditions are timely rectified, and a new line is replaced. And F, calculating whether the meter has the over-capacity condition or not according to the capacity of the transformer (user).

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.

Bypassing the common way of stealing electricity of metering devices: changing the live wire and the zero wire of the electric energy meter and exchanging the live wire and the zero wire; short-circuiting the live wire inlet and outlet; virtual connection of a voltage wire; connecting the secondary phase sequence reversely to make the electric energy meter reversely rotate; the position of the permanent magnet is changed, so that the gap between the magnet and the aluminum disc is reduced, and the electric energy is slowed down; changing the phase sequence of the current line and the voltage line; opening the voltage connection piece; the electric energy meter wiring terminal box or the back of the combined terminal box remotely controls the electricity stealing device and the like.

The solution measures are as follows: whether wiring of the intelligent electric energy meter under the platform area is correct or not and whether current and voltage are normal or not can be automatically identified by installing the platform area data checking instrument or the intelligent diagnosis robot (the embodiment of the disclosure does not limit the data checking instrument or the intelligent diagnosis robot, and the existing data checking instrument or the existing intelligent diagnosis robot in the market can be adopted); whether the resident opens the meter cover site privately, and the like. For the electricity utilization condition of a user or a mechanical meter bypassing the metering device, a checker needs to go to the site for checking.

And (4) proposing: the above methods are common electricity stealing methods, but it can be seen that all electricity stealing methods almost directly contact or change the electric energy metering device to achieve the purpose of electricity stealing. A, technical transformation of a metering device of the reinforced electric energy meter is realized, and a mutual inductor, a metering secondary loop, the electric energy meter, a junction box and the like are changed into closed metering. B, adopting a centralized meter box or a totally-enclosed meter box for residents, namely adopting a method of wire inlet pipe, pipe inlet box, box locking and lead sealing. C, the disposal mode of the electricity stealing users is enhanced, and the technical improvement is enhanced.

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 solution measures are as follows: and (3) carrying out system analysis on the users who fail to collect the electricity, judging whether the concentrator is hung wrongly, the electric energy meter module is damaged and the system parameter setting is correct, and then checking whether the correct collection rate of the users who use the electricity under the distribution area is up to 100% or not on site. Photovoltaic user power consumption gathers problem: under the transformer area, photovoltaic power generation users are connected, and because the power consumption of the photovoltaic power generation users cannot be correctly collected, the statistics of the power consumption of the transformer area is wrong, and the transformer area presents a high loss condition. The phenomenon of sudden high loss of the station area statistical line loss means that the original line loss rate of the station area always keeps a stable state, and the daily line loss rate changes suddenly. The reasons for this phenomenon can be summarized as follows:

and A, newly adding the station change area, wherein the system is not updated in time, and the station change relation is changed.

And the user electric energy meter in the B station area fails to collect.

C concentrator or carrier failure.

And D, damaging the user transformer.

And E, wrong wiring of the newly added and table-changed users.

F, the actual multiplying power of the mutual inductor for newly adding and changing users is inconsistent with the nameplate sign of the mutual inductor.

G adding temporary electricity consumption without meters or mechanical meters.

H, severe weather influence, and the condition of electric leakage.

I, users steal electricity within a short time or the electricity steals cannot be found and supplemented within a statistical electricity quantity period.

The solution measures are as follows: and for the sudden high loss condition, the data analysis is preferentially carried out on the change condition of the line loss through the system, and then the field check is carried out.

A common problem is that: 1. the power supply quantity changes slightly, the power selling quantity is reduced suddenly, and the conditions of acquisition failure and sudden reduction of the power consumption of a single user exist. 2. The power supply quantity is suddenly increased, the electricity selling quantity is slightly changed, and whether a new user exists or not and an electricity stealing site exists or not.

(2) Negative line loss problem and treatment method

The negative loss transformer area is an abnormal transformer area with the transformer area line loss rate of less than 0% (a second preset threshold) in the statistical period (preset period) of the power utilization information acquisition system, and the main symptoms are long-term negative loss, sudden negative loss and small negative loss.

The main reasons for the long-term negative loss and small negative loss can be classified into 3 categories: the user variable relation is wrong, the metering device has two types of faults and the acquisition problem. The user variation relation error means that users in a marketing and acquisition system area are not in accordance with the actual situation of the site, or the configuration of a summary table and a concentrator is not consistent with the site.

The solution measures are as follows: the solution is the same as the method for processing the high-loss user variable relationship.

The metering device failure mainly comprises:

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 and reverse connection of current polarity. And the secondary voltage is virtually connected. 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. And D, the 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 with 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 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 loss in the transformer area.

The solution measures are as follows: the problem processing mode of the total meter multiplying power and the user electric energy meter multiplying power is consistent with the high loss method. And B, the voltage, the current, the power factor and the phase angle of the summary table can be summoned and measured in the acquisition system for analysis, and whether the wiring of the summary table has problems or not can be judged. Abnormal data are recalled and detected, which mainly shows the conditions of voltage phase loss, current loss or identity, low power factor, phase angle error and the like, and then the wiring condition of the general table is checked on site. And C, the electric energy meter clock is required to be associated with a manufacturer to correct or replace a new electric energy meter when the clock is deviated. And D, for wiring before the summary table for the electricity consumption of the user, the line needs to be rectified and changed. And E, calling a summary sheet current curve and a load condition from the acquisition system, calculating whether the conditions of unreasonable transformer configuration and three-phase load balance exist, and if so, replacing and configuring a reasonable transformer and adjusting the three-phase load condition.

The collection problem is as follows: 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.

The solution measures are as follows: the users who fail to collect are firstly analyzed by the system, whether the concentrator is hung wrongly or not and whether the system parameter setting is correct or not are checked on site, and the correct collection rate of the users who use electricity under the distribution area is ensured to reach 100%. The sudden negative loss phenomenon refers to a station area with the original line loss rate of the station area kept in a stable state all the time, and the line loss rate of the station area is smaller than O% for more than 3 days suddenly. The reasons for the sudden negative loss phenomenon include the following: negative loss of a transformer area can be caused by abnormality of a certain phase voltage or current of the summary table; the user electric energy meter breaks down suddenly, and the electric energy representation value flies away; the general meter is broken down or burnt out, so that the power supply amount cannot be measured correctly; the users in the distribution area change, but the system does not update the files in time, so that the user change relationship is wrong; the user has the two-way power supply condition under the platform district (for guaranteeing that the user normally uses electricity, the condition that the electricity utilization condition is switched between two adjacent platform districts in a special period can not timely adjust the archive information in the system, which causes the condition that one of the platform districts is suddenly damaged).

The solution measures are as follows: a, calling and measuring the conditions of voltage, current and power factor of a summary table in an acquisition system, wherein the conditions are mainly represented by voltage loss and power factor abnormality of a certain day. And checking whether the current wire or the voltage wire of the general meter is loosened or oxidized by copper and aluminum on site, and checking whether the junction box has a screw loosening or oxidation phenomenon. And B, the electric energy of the user electric energy meter flies away, and the electric energy meter is generally damaged by external force or self factors and needs to be replaced. And adjusting system file information in time when the user change relationship in the C district changes.

The method for monitoring the abnormal line loss problem of the distribution transformer area provided by the embodiment of the invention has the following advantages:

(1) automatic diagnosis: the platform district data check instrument can diagnose that key data of all user ammeter are hung under the platform district, automatically detects communication conflict, and does not influence data reading of the platform district ammeter by adopting an acquisition.

(2) Intelligent analysis: and diagnosing the electric quantity parameters of the user by adopting a metering loop intelligent diagnosis technology, finding out an abnormal state, and determining the type of the line loss abnormal problem according to the abnormal state.

(3) The treatment measures are as follows: finally, summarizing and concluding the system reasons and the types of the reasons considered to be abnormal in the line loss of the transformer area, forming a file report, and selecting corresponding treatment measures aiming at the problem type.

The method realizes accurate positioning of the line loss problem, can save manpower when determining the problem type, can diagnose all suspicious users below the transformer area by only installing the data checker on the concentrator of the transformer area for acquisition, can be installed in a charged mode, is convenient to use and simple to operate, greatly improves the working efficiency of power utilization inspectors, and is a tool for reducing the loss and improving the efficiency of the power utilization inspectors.

The method has strong universality, is suitable for all transformer areas in the range of the national network company, thoroughly solves the problem that the loss of the transformer areas of the national network company is difficult to be spool by considering the problems of large number of transformer areas, complex customer electricity utilization condition and the like, has strong practicability, and fills the blank of the industry. The traditional inspection working mode of an inspector is changed, the inspection working period is shortened, under the general condition, the inspector can carry out carpet type inspection on a certain high-loss transformer area for 2-3 days to walk out the whole transformer area, and after the abnormal line loss problem of the transformer area is monitored by the method provided by the invention, the inspector only needs to fix time to obtain a diagnosis result at the transformer area, so that the working efficiency of the inspector is effectively improved, the working burden of the inspector is reduced, and the problem of insufficient staff is thoroughly solved.

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

1. A distribution transformer area line loss abnormity problem monitoring method is characterized by comprising the following steps: the method comprises the following steps:

2. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 1, wherein the method comprises the following steps: according to the abnormal state, determining the type of the line loss abnormal problem, comprising the following steps:

3. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 2, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, wherein the treatment measures comprise:

4. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 3, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, and further comprising the following steps:

5. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 4, wherein the method comprises the following steps: when the determined abnormal problem is a fault belonging to the class of metering devices, the method further comprises the following steps:

carrying out background calling and testing through the acquisition system, and checking whether a meter under the platform area has clock deviation; or carrying out background calling and testing through the acquisition system, and checking whether the three-phase load of the transformer area is balanced.

6. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 3, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, and further comprising the following steps:

7. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 3, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, and further comprising the following steps:

8. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 3, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, and further comprising the following steps:

9. The method for monitoring the abnormal line loss problem of the distribution and transformation station area according to claim 3, wherein the method comprises the following steps: according to the determined type of the abnormal problem, taking corresponding treatment measures according to a preset rule, and further comprising the following steps: