CN114236283A - Method and device for determining line loss reason of power supply network - Google Patents
Method and device for determining line loss reason of power supply network Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and a device for determining a line loss reason of a power supply network. The method for determining the line loss reason of the power supply network comprises the following steps: sequentially checking the station area meter reading data, the household change relation, the station area examination and verification table and the metering device of the station area to be checked; when the checking result meets the set requirement, acquiring user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user overload amount and user power utilization trend data of the station area to be checked; and determining the line loss reason according to the user voltage and current data of the transformer area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data. Compared with the prior art, the method and the device solve the problems of low efficiency, poor reliability, strong manual intervention, one-sided analysis and the like in the determination of the line loss reason of the power supply network, improve the accuracy of line loss analysis, and further realize the improvement of the management and control level of the line loss of the transformer area.
Description
Technical Field
The embodiment of the invention relates to the technical field of power supply, in particular to a method and a device for determining a line loss reason of a power supply network.
Background
The line loss of the power supply network is an important economic index for state assessment of power departments, and is also a comprehensive reflection of the design level, the production technology level and the operation management level of a power system, and the reduction of the line loss of the power supply network has very important significance for making good energy conservation and improving the economic benefit of power enterprises. Electricity stealing, electric leakage, meter metering error and meter reading all can cause the fluctuation of power supply network line loss, and electricity stealing phenomenon has been the problem of very much concern to power enterprises for a long time, and electricity stealing not only causes the national property to suffer serious loss, influences the economic benefits of power enterprises, but also brings a series of potential safety hazards and social problems, and the harm is huge. The existing line loss reason determination has the problems of low efficiency, poor reliability, strong manual intervention, one-sided analysis and the like.
Disclosure of Invention
The invention provides a method and a device for determining line loss reasons of a power supply network, which are used for solving the problems of low efficiency, poor reliability, strong manual intervention, one-sided analysis and the like in the determination of the line loss reasons of the power supply network, and improving the accuracy of line loss analysis, thereby realizing the improvement of the management and control level of line loss of a transformer area.
In a first aspect, an embodiment of the present invention provides a method for determining a cause of line loss of a power supply network, where the method includes:
sequentially checking the station area meter reading data, the household change relation, the station area examination and verification table and the metering device of the station area to be checked;
when the checking result meets the set requirement, acquiring user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user overload amount and user power utilization trend data of the station area to be checked;
and determining the line loss reason according to the user voltage and current data of the to-be-checked transformer area, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data.
Optionally, the checking the meter reading data of the area to be checked includes:
checking whether the electricity selling quantity and the electricity supply quantity are in the same period;
checking whether error reading and missing reading exist or not;
checking whether electric quantity is returned or not;
checking the reverse electric quantity of other power supply customers except for the check outdoor of the transformer substation and the local district;
and checking whether a power-generating vehicle or a power generator input power-protecting condition exists.
Optionally, the checking the examination and verification table and the metering device in the distribution room includes:
and checking whether the examination and check table and the metering device in the transformer area have faults or not.
Optionally, the checking the user variable relationship includes:
checking whether the business expansion work order is accurately filed in time;
checking whether the electronic transfer work order is accurately submitted in time;
and checking whether the historical station line subscriber relationship is wrong.
Optionally, the method for determining the cause of the line loss of the power supply network further comprises:
and acquiring a difference value between the power supply quantity and the power selling quantity of each power supply area, and determining the area to be checked according to the difference value.
Optionally, the method for determining the cause of the line loss of the power supply network further comprises:
and when at least one factor of the zone meter reading data, the household variation relation, the zone examination table and the metering device of the zone to be checked does not meet the set requirement, determining the line loss reason according to the factor which does not meet the requirement.
Optionally, after determining that the line loss reason is electricity stealing according to the user voltage and current data of the to-be-checked transformer area, the user three-phase imbalance value, the degree of fitting of the user electricity utilization trend and the line loss trend, the user overload amount and the user electricity utilization trend data, the method further includes:
determining the type of electricity stealing;
and determining the electricity stealing processing result of the electricity stealing user according to the electricity stealing type.
In a second aspect, an embodiment of the present invention further provides an apparatus for determining a cause of line loss in a power supply network, where the apparatus includes:
the checking module is used for sequentially checking the station area meter reading data, the household variation relation, the station area examination and verification meter and the metering device of the station area to be checked;
the acquisition module is used for acquiring user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user overload capacity and user power utilization trend data of the to-be-checked transformer area when a checking result meets a set requirement;
and the line loss reason determining module is used for determining the line loss reason according to the user voltage and current data of the station area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data.
Optionally, the checking module comprises:
a synchronization checking unit for checking whether the electricity selling amount and the electricity supplying amount are synchronized;
a misreading and missed copying checking unit for checking whether the misreading and missed copying exist;
the electric quantity compensation checking unit is used for checking whether electric quantity compensation exists or not;
the reverse electric quantity checking unit is used for checking reverse electric quantities of other power supply customers except the substation and the check outdoor of the local area;
and the power protection condition checking unit is used for checking whether the power protection condition input by the generator car or the generator exists.
Optionally, the checking module further comprises:
the work order filing detection unit is used for checking whether the business expansion work order is accurately filed in time;
the work order submission checking unit is used for checking whether the electronic handover work order is accurately submitted in time;
and the subscriber-to-subscriber relationship detection unit is used for checking whether the historical station line subscriber-to-subscriber relationship is wrong.
According to the technical scheme of the embodiment, the meter reading data of the transformer area to be checked, the household change relationship, the transformer area examination and verification meter and the metering device are checked in sequence. And when the checking result meets the set requirement, acquiring the user voltage and current data, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data of the station area to be checked. And determining the line loss reason according to the user voltage and current data of the transformer area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data. The technical scheme of this embodiment has solved power supply network line loss reason and has confirmed to have inefficiency, and the reliability is poor, and artificial intervention is strong, analyzes the unilateral scheduling problem, can determine the reason of line loss fast according to data analysis, has greatly reduced human cost and time cost, improves the efficiency and the accuracy of platform district line loss analysis work by a wide margin, improves platform district line loss management and control level.
Drawings
Fig. 1 is a flowchart of a method for determining a cause of line loss in a power supply network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply network line loss cause determining apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a checking module of a power supply network line loss cause determining apparatus according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a power supply network line loss cause determination method according to an embodiment of the present invention, which may be executed by a power supply network line loss cause determination apparatus, which may be implemented by software and/or hardware. Referring to fig. 1, the specific steps of the determination method are as follows:
and S110, sequentially checking the meter reading data of the transformer area to be checked, the household change relationship, the transformer area examination and verification meter and the metering device.
The meter reading data of the transformer area comprises electricity selling quantity data, power supply quantity data, electricity quantity compensation data, reverse electricity quantity data and input electricity conservation quantity data of the transformer area. The user variable relationship refers to the home relationship between the user and the transformer area, and the home relationship between the user and the transformer area is inconsistent with the actual field, which is called as a user variable relationship error. For example, there are some abnormal situations such as negative line loss or high line loss in the examination area due to reasons such as untimely updating of the user variable relationship file or recording errors caused by temporary change of the line in some areas. The station area checking meter is an electric energy meter used for metering the power supply amount in the station area to be checked. The metering device is used for a metering appliance for measuring the electricity consumption of a user. The metering device can be composed of an electric energy meter and a metering mutual inductor (comprising a voltage mutual inductor and a current mutual inductor).
The method comprises the steps of obtaining the district meter reading data, the household variable relation, the district examination and verification table data of a district to be checked and the data of a metering device from an electricity utilization information acquisition system, preprocessing the data, checking, modifying the line loss of the district according to data analysis, and primarily judging whether suspected electricity stealing users exist in the district if the line loss is still high (the line loss rate of the district is more than 3% and the line loss rate of the street is more than 5%), and further analyzing electricity stealing and checking electricity utilization.
And S120, when the checking result meets the set requirement, acquiring the user voltage and current data, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data of the transformer area to be checked.
The method comprises the steps of obtaining user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user heavy overload amount and user power utilization trend data of a transformer area to be checked, analyzing the fitting degree of the current voltage value, the line loss trend and the user power utilization trend of users in a district, the user heavy overload amount with the three-phase unbalance value, the user power utilization trend data and the like, locking suspected power stealing users and reducing the possible range of power stealing by combining the existing anti-power stealing method and measures.
S130, determining the line loss reason according to the user voltage and current data of the transformer area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data.
And if the situation occurs, the situation is preliminarily judged that the user who has the situation can forge or open the sealed electricity metering device of the power supply enterprise to seal electricity or intentionally damage the electricity metering device of the power supply enterprise to use electricity, so that the display of the station area to be checked is abnormal.
When a user has a three-phase imbalance condition, the line loss reason can be preliminarily determined to be that the user bypasses the electricity consumption of the electricity supply metering device.
The electricity consumption trend data of the user comprises the electricity consumption of the user and the fluctuation change of the electricity consumption of the user in a certain time period. Whether large deviation exists between the estimated power consumption of the user and the actual power consumption can be judged according to the power consumption trend data of the user, and if the large deviation exists, the power consumption metering device of the power supply enterprise is judged to be deliberately inaccurate or invalid preliminarily.
The line loss trend represents the fluctuation change of the line loss in a certain time period. The power utilization trend curve and the line loss trend curve of the user can be drawn on the same graph, and the fitting degree of the power utilization trend of the user and the line loss trend can be displayed in an intuitive and real mode. If the power utilization trend of the user and the line loss trend are in a positive correlation relationship, the more the power utilization of the user is, the higher the line loss is; the less electricity the user uses and the lower the line loss, the more electricity stealing the user may occur, and the reason for the line loss may be caused by electricity stealing of the user.
In addition, the heavy overload capacity of the users can be analyzed, namely whether the power utilization capacity of the users connected below the platform area exceeds the rated capacity of the transformer or the load rate is more than 80%, and if the power utilization capacity exceeds the rated capacity of the transformer, the reason of the abnormal line loss can be preliminarily determined as the reason of production operation.
According to the technical scheme of the embodiment, the meter reading data of the transformer area to be checked, the household change relationship, the transformer area examination and verification meter and the metering device are checked in sequence. And when the checking result meets the set requirement, acquiring the user voltage and current data, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data of the station area to be checked. And determining the line loss reason according to the user voltage and current data of the transformer area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data. The technical scheme of this embodiment has solved power supply network line loss reason and has confirmed to have inefficiency, and the reliability is poor, and artificial intervention is strong, analyzes the unilateral scheduling problem, can determine the reason of line loss fast according to data analysis, has greatly reduced human cost and time cost, improves the efficiency and the accuracy of platform district line loss analysis work by a wide margin, improves platform district line loss management and control level.
Optionally, the checking the meter reading data of the area to be checked includes:
checking whether the electricity selling quantity and the electricity supply quantity are in the same period;
checking whether error reading and missing reading exist or not;
checking whether electric quantity is returned or not;
checking the reverse electric quantity of other power supply customers except for the check outdoor of the transformer substation and the local district;
and checking whether a power-generating vehicle or a power generator input power-protecting condition exists.
Specifically, checking whether the electricity sales amount and the electricity supply amount are in the same period means checking whether the electricity sales amount and the electricity sales amount belong to the same time period through a "look-up table code" function in the marketing system. The checking whether the error reading and the missing reading exist refers to checking whether the user electricity consumption data error reading and the missing reading caused by internal faults or communication interruption transmission and the like exist when the metering system remotely reads the meter.
Because of system reasons, some users may pay more electric charges in the previous month, the more electric charges are converted into electric quantity to be returned to the users in the current month, or the electric charges are not collected in the previous month, and the electric charges are recovered in the current month, so that the electric quantity sold in the current month is different from the electric quantity supplied, and whether the electric quantity is returned or not needs to be checked. Checking whether the work order influencing the electric quantity statistics exists in the process of electric quantity compensation, confirming whether the table code is accurately input, whether compensation or return electric quantity calculation is reasonable, whether file input is timely, and whether the electric quantity attributive month period is correct.
Checking the reverse electric quantity of other power supply customers except for checking the transformer substation and the local district for outdoor examination refers to checking whether the power plants such as photovoltaic power plants, small hydropower plants and garbage power plants supply power in the direction or not and checking whether the settlement of the reverse power supply electric quantity is normal or not. Whether the condition of power generation vehicles or generators for input power protection is checked is that information is acquired from a production operation department, whether the condition of power generation vehicle/generator input power protection occurs in a station area, and if the input power is included in the power supply statistics, the line loss rate is normal, the line loss reason can be determined as that the external power is input for power protection during production operation.
Optionally, the checking the examination and verification table and the metering device in the distribution room includes:
and checking whether the examination and check table and the metering device in the transformer area have faults or not.
The method for checking whether the district check meter has a fault specifically means that the month and day check records of the metering automation system are compared by comparing historical check electric quantity, and the problem that the metering is inaccurate is checked on site. Faults existing in the metering device comprise the problem of wiring faults of the electric energy meter and the problem of multiplying power faults of the mutual inductor.
Optionally, the checking the user variable relationship includes:
checking whether the business expansion work order is accurately filed in time;
checking whether the electronic transfer work order is accurately submitted in time;
and checking whether the change relation of the historical station line is wrong.
Specifically, the step of checking whether the business expansion work order is timely and accurately filed comprises the step of checking whether the work order in operation in the process is timely filed, checking whether the electricity consumption of a meter installed on the spot exists or not, solving the problem that a system client does not establish a file, and confirming important fields of a newly installed user file, wherein the important fields include user types, voltage levels of measuring points, circuits to which the measuring points belong and whether a measuring point platform area is accurate or not.
The step of checking whether the electronic handover work order is timely and accurately submitted comprises the following steps: and checking whether the condition that the relation of 'station line changing to users' is wrong due to the fact that the filling of the electronic transfer work order is not standard, the electronic transfer data is wrongly recorded or is inconsistent with the site exists.
Checking whether the historical station line change relationship is wrong comprises checking basic Information that a GIS (Geographic Information System) System is synchronized to a marketing System.
Optionally, the method for determining the cause of the line loss of the power supply network further comprises:
and obtaining the difference value between the power supply quantity and the power selling quantity of each power supply area, and determining the area to be checked according to the difference value.
The line loss of the power supply network refers to the loss of active electric energy generated in the transmission, distribution and sale processes of electric energy, and in actual work, the line loss generally refers to the difference between the power supply amount and the power sale amount at a certain period. The amount of power supplied refers to the total amount of power delivered to the user through the substation (including power losses in the transmission). The electricity selling amount refers to the amount of electricity calculated by the electricity meter at the user side, namely the actual electricity consumption of the user. The power supply amount is selling power amount plus loss power amount. And acquiring a difference value between the power supply quantity and the power selling quantity of each power supply area, and if the difference value has larger deviation, judging the power supply area with larger deviation as the area to be checked.
Optionally, the method for determining the cause of the line loss of the power supply network further comprises:
and when at least one factor of the zone meter reading data, the household variation relation, the zone examination table and the metering device of the zone to be checked does not meet the set requirement, determining the line loss reason according to the factor which does not meet the requirement.
When the meter reading data of the transformer area to be checked does not meet the set requirement, the line loss reason may be caused by an error in the meter reading data. When the subscriber change relationship does not meet the setting requirement, the line loss reason may be caused by the fact that the subscriber change relationship of the transformer area is changed and information is not updated in time due to the fact that subscribers are increased, subscribers are sold, electricity utilization addresses are changed and the like. When the cell examination and check table does not meet the set requirement, the line loss reason may be caused by a wiring error of the cell examination and check table or a fault of the cell examination and check table. When the metering device does not meet the set requirements, the line loss reason may be caused by a wiring error or a fault of the metering device. Optionally, after determining that the line loss reason is electricity stealing according to the user voltage and current data of the to-be-checked transformer area, the user three-phase imbalance value, the degree of fitting of the user electricity utilization trend and the line loss trend, the user overload amount, and the user electricity utilization trend data, the method further includes:
determining the type of electricity stealing;
and determining the electricity stealing processing result of the electricity stealing user according to the electricity stealing type.
Specifically, the electricity stealing types include: the power supply facilities of power supply enterprises use electricity by unauthorized wiring; forging or opening a sealed electricity metering device of a power supply enterprise to seal electricity consumption or intentionally damaging the electricity metering device of the power supply enterprise or intentionally making the electricity metering device of the power supply enterprise inaccurate or invalid to steal electricity; and bypassing other electricity stealing types such as electricity consumption of the electricity metering device of the power supply enterprise.
On the power supply facilities of power supply enterprises, the stolen electric quantity is determined by calculation according to the rated capacity (kilovolt-ampere, kilovolt-ampere and kilowatt) of private equipment multiplied by the actual use time, and the actual time which cannot be determined is determined by calculation according to 180 days.
Illustratively, when the electricity stealing type is unauthorized for wiring power utilization on a power supply main line of a power supply enterprise, there are two electricity stealing processing methods. The first processing method is that the stolen electric quantity is determined according to the capacity (16.2KW) of private-connected equipment multiplied by the actual using time, when the electricity stealing time cannot be found out, the number of electricity stealing days is calculated by at least one hundred eighty days, and the electricity stealing time per day: the residential user counts in 6 hours. The formula for calculating the compensation electric quantity during the electricity stealing period is as follows: 16.2KW × 6 hr × 180 days 17496 degree. And the electric quantity supplemented during the electricity stealing period is multiplied by the unit price of the electric charge to obtain the electric charge which needs to be supplemented for electricity stealing, and the electric power department penalizes the user according to the supplemented electric charge.
The second processing method is that the stolen electric quantity is determined according to the capacity (the electric meter is 645.0kWh multiplied by 20 times) of the private access equipment multiplied by the actual using time, when the electricity stealing time cannot be found out, the electricity stealing days are calculated by at least one hundred eighty days, and the electricity stealing time per day: the resident user is calculated according to 6 hours, the field is non-industrial electricity, and the low supply and low rate is 20 times. The electric quantity recorded by the electric meter in the duration of electricity stealing multiplied by 20 is 645.0kWh multiplied by 20 is 12900 kWh. And the electric quantity supplemented during the electricity stealing period is multiplied by the unit price of the electric charge to obtain the electric charge which needs to be supplemented for electricity stealing, and the electric power department penalizes the user according to the supplemented electric charge.
When the electricity stealing type is electricity stealing by forging or opening the sealed electricity metering device of the power supply enterprise to seal electricity consumption/intentionally damage the electricity metering device of the power supply enterprise or intentionally make the electricity metering device of the power supply enterprise inaccurate or fail, the electricity stealing amount is calculated and determined by multiplying the electricity reading indicated by the opening time of the electricity meter by the actual electricity stealing time.
Illustratively, the electric energy representation number of XX month XX day of the electricity stealing and cover opening time XX year is 335.7kWh, the electric energy representation number of XX month XX day of the electricity stealing and investigation time XX year is 7549.75kWh, the difference value is 7214.05kWh, and the verification error value is-73.949%. The electricity stealing capacity (-G)/(1+ G) ═ 7214.05kWh × 0.73949/0.26051 ═ 20477.78kWh recorded by the electricity stealing meter during the electricity stealing duration period. The electricity stealing amount is multiplied by the unit price of the electric charge to be the electric charge which needs to be paid in a compensation mode, and the electric power department penalizes the user according to the electric charge paid in the compensation mode.
When the electricity stealing type is other electricity stealing behaviors such as power utilization of the electricity metering device bypassing the power supply enterprise, the electricity stealing amount is determined by calculating the capacity (kilovolt-ampere and kilowatt) of the calibrated current value (the current value is set according to the current limiter) of the charging electric energy meter multiplied by the actual electricity stealing time. When the electricity stealing time cannot be found out, the number of electricity stealing days is calculated by at least one hundred eighty days, and the electricity stealing time per day is as follows: the power consumer counts according to 12 hours; the lighting user counts in 6 hours.
Illustratively, the calculation is carried out according to the capacity indicated by the calibration current value of the charging electric energy meter. When the electricity stealing time cannot be found out, the number of electricity stealing days is calculated by 180 days, the electricity consumption of the field illumination is calculated by 6 hours, the calibration current is calculated by 5A, and the voltage is calculated by 220V. Electricity stealing: 5A 0.22 6 180 kWh 1188 kWh. The electricity stealing amount is multiplied by the unit price of the electric charge to be the electric charge which needs to be paid in a compensation mode, and the electric power department penalizes the user according to the electric charge paid in the compensation mode.
The embodiment determines the electricity stealing processing result of the electricity stealing user according to the electricity stealing type by determining the electricity stealing type. The problem of at present the artifical electric charge that steals electricity and mends after repair and the illegal use electric charge of calculating can't be accurate unanimous with system electricity stealing calculation amount of money, often appear that calculation data is not unified, calculate phenomenons such as error, lead to stealing electricity and mend after repair electric charge and mend the mistake or mend not in place is solved. In the process of anti-electricity-stealing check of a worker, the electricity-stealing processing result is automatically calculated for electricity-stealing customers in the check through the electricity-stealing type judged by the on-site electricity inspection and the electricity-stealing data input on the site, the calculation process and the calculation result are associated to the operation list of the electricity-stealing data, and the calculation result is exported, so that the electricity-stealing calculation time is shortened, the electricity-stealing calculation accuracy and reliability are improved, and the intelligent application of the electricity-stealing calculation is realized.
Example two
The embodiment of the invention also provides a power supply network line loss reason determining device, which can be realized by software and/or hardware and is used for executing the determining method provided by any embodiment of the invention, and the technical principle and the generated effect are similar and are not described again. Fig. 2 is a schematic structural diagram of a power supply network line loss cause determining apparatus according to a second embodiment of the present invention, and referring to fig. 2, the power supply network line loss cause determining apparatus includes:
and the checking module 10 is used for sequentially checking the station area meter reading data, the household change relationship, the station area examination and verification table and the metering device of the station area to be checked.
The obtaining module 20 is configured to obtain, when the checking result meets the set requirement, user voltage and current data, a user three-phase imbalance value, a degree of fitting between a user power consumption trend and a line loss trend, a user overload amount, and user power consumption trend data of the station area to be checked;
and the line loss reason determining module 30 is configured to determine a line loss reason according to the user voltage and current data of the station area to be checked, the user three-phase imbalance value, the degree of fitting between the user power utilization trend and the line loss trend, the user overload amount, and the user power utilization trend data.
The device can execute the method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Fig. 3 is a schematic structural diagram of a verification module of a power supply network line loss cause determining apparatus according to a second embodiment of the present invention, and referring to fig. 3, optionally, the verification module 10 includes:
a synchronization checking unit 101 for checking whether the electricity selling amount and the electricity supplying amount are synchronized;
a misreading and missed copying checking unit 102, configured to check whether there is misreading and missed copying;
an electric quantity compensation checking unit 103 for checking whether electric quantity compensation exists;
the reverse electric quantity checking unit 104 is used for checking reverse electric quantities of other power supply customers except the substation and the check outdoor of the local area;
and the power protection condition checking unit 105 is used for checking whether a power generation vehicle or a power generator inputs a power protection condition.
With continuing reference to FIG. 3, optionally, the verification module 10 further comprises:
the work order filing detection unit 106 is used for checking whether the business expansion work order is accurately filed in time;
a work order submission checking unit 107 for checking whether the electronic handover work order is accurately submitted in time;
and the subscriber-to-subscriber relationship detection unit 108 is used for checking whether the historical station line subscriber-to-subscriber relationship is wrong.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for determining a cause of line loss of a power supply network is characterized by comprising the following steps:
sequentially checking the station area meter reading data, the household change relation, the station area examination and verification table and the metering device of the station area to be checked;
when the checking result meets the set requirement, acquiring user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user overload amount and user power utilization trend data of the station area to be checked;
and determining the line loss reason according to the user voltage and current data of the to-be-checked transformer area, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data.
2. The method of claim 1, wherein the checking the zone meter reading data of the zone to be checked comprises:
checking whether the electricity selling quantity and the electricity supply quantity are in the same period;
checking whether error reading and missing reading exist or not;
checking whether electric quantity is returned or not;
checking the reverse electric quantity of other power supply customers except for the check outdoor of the transformer substation and the local district;
and checking whether a power-generating vehicle or a power generator input power-protecting condition exists.
3. The method of claim 1, wherein the checking of the cell audit table and the metering device comprises:
and checking whether the examination and check table and the metering device in the transformer area have faults or not.
4. The method of claim 1, wherein checking the user-dependent relationship comprises:
checking whether the business expansion work order is accurately filed in time;
checking whether the electronic transfer work order is accurately submitted in time;
and checking whether the historical station line subscriber relationship is wrong.
5. The method of claim 1, further comprising:
and acquiring a difference value between the power supply quantity and the power selling quantity of each power supply area, and determining the area to be checked according to the difference value.
6. The method of claim 1, further comprising:
and when at least one factor of the zone meter reading data, the household variation relation, the zone examination table and the metering device of the zone to be checked does not meet the set requirement, determining the line loss reason according to the factor which does not meet the requirement.
7. The method of claim 1, wherein after determining that the cause of the line loss is electricity stealing according to the subscriber voltage and current data, the subscriber three-phase imbalance value, the degree of fitting of the subscriber electricity trend to the line loss trend, the subscriber overload amount and the subscriber electricity trend data of the station area to be checked, the method further comprises:
determining the type of electricity stealing;
determining according to the type of electricity stealing
The result of the electricity stealing processing of the electricity stealing users.
8. A power supply network line loss cause determining apparatus, comprising:
the checking module is used for sequentially checking the station area meter reading data, the household variation relation, the station area examination and verification meter and the metering device of the station area to be checked;
the acquisition module is used for acquiring user voltage and current data, a user three-phase unbalance value, the fitting degree of a user power utilization trend and a line loss trend, a user overload capacity and user power utilization trend data of the to-be-checked transformer area when a checking result meets a set requirement;
and the line loss reason determining module is used for determining the line loss reason according to the user voltage and current data of the station area to be checked, the user three-phase unbalance value, the fitting degree of the user power utilization trend and the line loss trend, the user overload capacity and the user power utilization trend data.
9. The apparatus of claim 8, wherein the means for checking comprises:
a synchronization checking unit for checking whether the electricity selling amount and the electricity supplying amount are synchronized;
a misreading and missed copying checking unit for checking whether the misreading and missed copying exist;
the electric quantity compensation checking unit is used for checking whether electric quantity compensation exists or not;
the reverse electric quantity checking unit is used for checking reverse electric quantities of other power supply customers except the substation and the check outdoor of the local area;
and the power protection condition checking unit is used for checking whether the power protection condition input by the generator car or the generator exists.
10. The apparatus of claim 8, wherein the means for verifying further comprises:
the work order filing detection unit is used for checking whether the business expansion work order is accurately filed in time;
the work order submission checking unit is used for checking whether the electronic handover work order is accurately submitted in time;
and the subscriber-to-subscriber relationship detection unit is used for checking whether the historical station line subscriber-to-subscriber relationship is wrong.
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