Method for selecting optimal electric quantity returning and supplementing method

Abstract

The invention discloses a method for selecting an optimal electric quantity return and supplement method. The method comprises the following steps: acquiring a user needing to perform electric quantity return and supplement; determining whether the electric energy metering device corresponding to the user is provided with a reference meter; if yes, performing back-compensation according to a reference table method; and if not, at least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electric quantity method is selected according to the fault type of the electric energy metering device for retreating and supplementing. According to the technical scheme of the embodiment of the invention, through the fault type of the electric quantity metering device, the electric energy data and the power utilization habit of the user are combined as a selection basis, and the efficiency of processing electric quantity return and supplement work is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of power systems, and in particular to a method for selecting an optimal power withdrawal method. Background Art

[0002] With the rapid growth of social economy, the types of electricity users and electricity usage habits have gradually become diversified, which poses certain challenges to the reliable operation and accurate measurement of electric energy metering devices. Power supply companies will also gradually expand functionality and improve accuracy to meet the needs of electricity users in the market. Electric energy metering devices will inevitably have inaccurate metering records, errors in electricity metering or calculation, etc.

[0003] On the one hand, power supply companies need to strengthen the operational stability and metering accuracy of electric energy metering devices and loop systems. More importantly, on the other hand, when errors occur in electricity, they need to provide electricity users with professional, standardized, and reasonable electricity refund and compensation methods to correct the incorrect electricity. When a metering device fails, it will cause errors in the calculation of electricity, which will in turn cause losses to users or power supply companies, affecting the experience of electricity use and power supply. Power supply companies need to issue corresponding electricity refund and compensation plans to refund or compensate for the electricity metering during the fault period to correct the incorrectly measured electricity during the fault period and protect the interests of power supply companies and electricity users from harm.

[0004] At present, the commonly used refunding methods mainly adopt the reference table method, the monthly average electricity method, and the correction coefficient method. The "Power Supply Business Rules" only stipulate the monthly average electricity method, but there is no detailed provision for the correction method of the monthly average electricity method, and there is no detailed explanation for the application and implementation of other refunding methods. There is a lack of systematic and targeted selection of appropriate refunding methods. This may lead to distrust and misunderstanding of the refunding methods by electricity users, which has certain limitations. Summary of the invention

[0005] The present invention provides a method for selecting an optimal electricity subsidy refunding method, so as to select the most appropriate subsidy refunding method and ensure the fairness and accuracy of the subsidy refunding work.

[0006] According to one aspect of the present invention, an embodiment of the present invention provides a method for selecting an optimal power withdrawal method, the method comprising:

[0007] Obtain users who need to refund or reimburse electricity;

[0008] Determining whether the electric energy metering device corresponding to the user is provided with a reference table;

[0009] If so, refund and compensation will be made according to the reference table method;

[0010] If not, at least one of the difference rate method, correction coefficient method, monthly average line loss method and monthly average electricity method is selected for refund according to the fault type of the electric energy metering device.

[0011] Optionally, the fault types include inaccurate metering records and errors in electric energy metering or calculation; the inaccurate metering records include: transformer error exceeding the tolerance, electric energy meter error exceeding the tolerance, secondary voltage drop error exceeding the tolerance, electric energy metering device stopping metering and human factor failure; the errors in electric energy metering or calculation include: transformer failure, electric energy metering device wiring error, and calculated ratio not matching the actual ratio.

[0012] Optionally, at least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, including:

[0013] If the fault type is that the transformer or the electric energy meter has an error exceeding the tolerance, the amount of electricity to be refunded and compensated is based on the "0" error and the difference rate method is used for refunding and compensation;

[0014] If the fault type is that the secondary voltage drop error exceeds the tolerance, the amount of electricity to be refunded will be based on the allowable voltage drop value and the difference rate method will be used for refunding.

[0015] Optionally, at least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, including:

[0016] If the fault type is a transformer fault, determine whether the transformer has a three-phase fault. If so, use the correction coefficient method to perform a refund.

[0017] If the fault type is a wiring error of the electric energy metering device, the correction coefficient method is used for compensation; wherein the wiring error includes at least one of reverse polarity of the voltage circuit and the current circuit and wrong phase sequence connection;

[0018] If the fault type is that the calculated ratio does not match the actual ratio, the amount of electricity to be refunded will be based on the actual ratio and the difference rate method will be used for refund.

[0019] Optionally, at least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, and further includes:

[0020] If the transformer is not faulty in all three phases, determine whether the target of the refund is the user or the line;

[0021] If the fault type is that the electric energy metering device stops measuring or is caused by human factors, determine whether the refund object is the user or the line;

[0022] If the object of the subsidy refund is a line, the monthly average line loss method will be used for the refund;

[0023] If the object of the subsidy refund is the user, the monthly average electricity consumption method will be used for the refund;

[0024] Optionally, the monthly average electricity consumption method is used for refunding and subsidy, including:

[0025] Determine whether the monthly increase in the user's power consumption is less than 10%;

[0026] If yes, the refunded electricity will be calculated based on the normal monthly electricity consumption in the last three months, and it will be determined whether the user used electricity on statutory holidays during the fault period; if yes, the full-day average electricity will be calculated based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if yes, the refunded electricity will take into account the transformer loss; if not, the monthly average electricity method will be used for refund;

[0027] If not, the amount of electricity to be refunded will be converted based on the normal monthly electricity consumption of the previous month, and it will be determined whether the user has statutory holidays using electricity during the fault period; if so, the average daily electricity consumption will be converted based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if so, the amount of electricity to be refunded must take into account the electricity loss of the transformer; if not, the monthly average electricity method will be used for refund.

[0028] Optionally, the refunded electricity is calculated based on the normal monthly electricity consumption in the last three months, and it is determined whether the user has used electricity on statutory holidays during the fault period, and also includes:

[0029] If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is high-voltage side metering; if so, the electricity refunded and subsidized shall take into account the electricity loss of the transformer; if not, use the monthly average electricity method for refund and subsidy;

[0030] The refunded electricity consumption is calculated based on the normal monthly electricity consumption of the previous month, and it is determined whether the user used electricity during statutory holidays during the fault period, and also includes:

[0031] If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is metered on the high-voltage side; if so, the electricity subsidy needs to take into account the transformer loss; if not, use the monthly average electricity method for subsidy refund.

[0032] Optionally, the refunding method using the difference rate method includes:

[0033] The fault is that the mutual inductor, energy meter, and secondary voltage drop error are out of tolerance, and the difference in electricity = |(actual error - reference error) × measured electricity|; determine whether the actual error is greater than the reference value; if so, return the difference in electricity; if not, make up for the difference in electricity;

[0034] The fault is that the calculated ratio does not match the actual ratio, the difference in electricity = |(calculated ratio - reference ratio) × calculated electricity / reference ratio|; determine whether the reference ratio is greater than the calculated ratio; if so, return the difference in electricity; if not, make up for the difference in electricity.

[0035] Optionally, the correction coefficient method is used for refunding, including:

[0036] Calculate the correction coefficient: k = P / P', where P is the secondary power of the correct wiring and P' is the secondary power of the incorrect wiring; the difference in power = (k-1) × the measured power; determine whether k-1 is less than 0; if so, return the difference in power; if not, make up for the difference in power.

[0037] Optionally, the monthly average line loss method is used for refunding, including:

[0038] Obtain the power supply and sales volume of the faulty line in the faulty month and the monthly average line loss rate in the fault-free month;

[0039] Determine whether the fault month participates in the ring network operation; if so, obtain the monthly power supply and power sales of the lines participating in the ring network operation in the fault month, and the monthly average line loss rate in the fault-free month; select the 3-month average line loss rate of the lines participating in the ring network operation that do not participate in the ring network operation in the fault-free month; calculate the monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; calculate the combined monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; difference power = actual power sales - power supply = [power sales in the fault month / (1-combined monthly average line loss rate of the fault month in the fault-free month)] - power supply in the fault month; determine whether the difference power is greater than 0; if so, make up the difference power; if not, return the difference power;

[0040] If not, filter the average line loss rate of the faulty line in the three months when it does not participate in the ring network operation in the fault-free months; calculate the monthly average line loss rate of the faulty line in the fault-free months; difference in electricity = actual electricity sales - power supply = [electricity sales in the faulty month / (1-the monthly average line loss rate of the faulty line in the fault-free months)] - the power supply in the faulty month; determine whether the difference in electricity is greater than 0; if so, make up the difference in electricity; if not, return the difference in electricity;

[0041] The monthly average electricity consumption method is used for refund and subsidy, including:

[0042] Get the user's electricity consumption in a normal month;

[0043] Convert normal monthly electricity consumption into daily average electricity consumption based on electricity consumption trends and whether there are statutory holidays;

[0044] Determine the date of failure and the number of days required to make up;

[0045] Determine whether the user is metering on the high-voltage side; if so, transformer power loss = monthly power loss × number of months to be compensated, difference power = (average daily power consumption × number of days to be compensated + transformer power loss) - metered power; determine whether the difference power is greater than 0; if so, compensate the difference power; if not, return the difference power;

[0046] If not, the transformer loss power is equal to 0; the difference power = (average daily power consumption × number of days to be supplemented + transformer loss power) - calculated power; determine whether the difference power is greater than 0; if so, make up the difference power; if not, return the difference power.

[0047] The technical solution of this embodiment, by obtaining users who need to refund or subsidize electricity, can process them according to the users who need refund or subsidize electricity, so as to ensure that the rights and interests of users are protected. Determine whether the electric energy metering device corresponding to the user is equipped with a reference table. If so, refund or subsidize according to the reference table method. By using the reference table method, the accuracy and consistency of the electric energy meter can be ensured, thereby ensuring the fairness and reliability of electric energy metering. If there is no reference table, the power supply company needs to flexibly select an appropriate method to refund or subsidize according to the specific circumstances of the fault and the electricity usage habits of different users, so as to ensure the fairness and accuracy of the refund or subsidize. The technical solution of the embodiment of the present invention improves the efficiency of processing the refund or subsidize electricity by using the fault category of the electric energy metering device, combined with the electric energy data and electricity usage habits of the user as the selection basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 It is a flow chart of a method for selecting an optimal power withdrawal method provided by an embodiment of the present invention;

[0050] Figure 2 is a flow chart of another method for selecting an optimal power withdrawal method provided by an embodiment of the present invention;

[0051] Figure 3 is a flow chart of the difference rate method provided by an embodiment of the present invention;

[0052] Figure 4 is a flow chart of a correction coefficient method provided by an embodiment of the present invention;

[0053] Figure 5 is a flow chart of the monthly average line loss method provided by an embodiment of the present invention;

[0054] Figure 6 It is a flow chart of the monthly average electricity method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0057] Figure 1 A flowchart of a method for selecting an optimal electricity withdrawal and compensation method provided by an embodiment of the present invention. This embodiment is applicable to the case where electricity withdrawal and compensation is performed for a user when an electric energy metering device fails, and specifically includes the following steps:

[0058] S101. Obtain users who need to refund or reimburse electricity.

[0059] Among them, users who need to be refunded for electricity may be users whose electricity metering devices fail. During the use of electricity, due to various reasons, the electricity meter measurement is inaccurate or the electricity fee calculation is wrong, and the power supply company needs to refund the electricity or electricity fee.

[0060] S102: Determine whether the electric energy metering device corresponding to the user is equipped with a reference table.

[0061] Among them, the electric energy metering device should be equipped with a reference meter that complies with the corresponding standards. The reference meter is usually used to calibrate and verify the accuracy of the electric energy metering device. The user's corresponding electric energy metering device can be installed with a set of main and auxiliary electric energy meters of the same model, specification and accuracy. The auxiliary meter can be regarded as a reference meter.

[0062] S103. If yes, refund and make up the difference according to the reference table method.

[0063] Among them, the user's corresponding electric energy metering device is equipped with a reference table, and refunds and subsidies can be made according to the reference table method.

[0064] S104: If not, select at least one of the difference rate method, correction coefficient method, monthly average line loss method and monthly average electricity method for refund according to the fault type of the electric energy metering device.

[0065] Among them, the user's corresponding electric energy metering device does not have a reference table, and other methods need to be used to determine how to refund the user's electricity bill according to the type of fault in the electric energy metering device. The electric energy data and electricity usage habits of the user can be used as the basis for selection, and the electric energy refund method can be selected in combination with the fault type of the metering device. It can be one of the difference rate method, correction coefficient method, monthly average line loss method and monthly average electricity method.

[0066] The technical solution of this embodiment, by obtaining users who need to refund or subsidize electricity, can process them according to the users who need refund or subsidize electricity, so as to ensure that the rights and interests of users are protected. Determine whether the electric energy metering device corresponding to the user is equipped with a reference table. If so, refund or subsidize according to the reference table method. By using the reference table method, the accuracy and consistency of the electric energy meter can be ensured, thereby ensuring the fairness and reliability of electric energy metering. If there is no reference table, the power supply company needs to flexibly select an appropriate method to refund or subsidize according to the specific circumstances of the fault and the electricity usage habits of different users, so as to ensure the fairness and accuracy of the refund or subsidize. The technical solution of the embodiment of the present invention improves the efficiency of processing the refund or subsidize electricity by using the fault category of the electric energy metering device, combined with the electric energy data and electricity usage habits of the user as the selection basis.

[0067] In some optional embodiments of the present invention, the fault types include inaccurate metering records and errors in electric energy metering or calculation;

[0068] Inaccurate metering records include: transformer error out of tolerance, energy meter error out of tolerance, secondary voltage drop error out of tolerance, energy metering device stopping metering and human factor failure;

[0069] Errors in energy metering or calculation include: transformer failure, incorrect wiring of the energy metering device, and discrepancy between the calculated ratio and the actual ratio.

[0070] Among them, inaccurate metering records refer to the inconsistency between the amount of electricity recorded by the energy metering device and the actual amount of electricity consumed, resulting in inaccurate metering results. A transformer is a device that converts high voltage or large current into low voltage or small current for easy measurement. Transformer error exceeds the tolerance means that the error of the transformer exceeds the allowable range. The energy meter is a device used to measure energy consumption. The energy meter error exceeds the tolerance means that the error of the energy meter exceeds the specified range. The secondary voltage drop error exceeds the tolerance means that a voltage drop will be generated in the secondary circuit of the energy meter and the transformer due to line resistance and other reasons. The generated voltage drop exceeds the allowable range. The energy metering device stops measuring, which means that the energy metering device stops working due to a fault or other reasons, and the energy consumption during the stop period will not be recorded. Human factor failure is the failure of the energy metering device caused by operating errors, deliberate destruction, etc. Errors in energy metering or calculation refer to errors that occur during the energy metering or calculation process, resulting in inaccurate electricity bill calculation. Transformer failure refers to a failure of the transformer, such as a blown fuse, poor contact, etc., which will affect the accurate measurement of electricity. If the wiring of the energy metering device is wrong, such as wrong phase sequence connection, reverse phase connection, etc., it will lead to incorrect energy metering results. The energy metering device usually has a multiplier setting to convert the measured value into the actual energy value consumed. If the multiplier of this setting is inconsistent with the actual multiplier required, it will lead to calculation errors.

[0071] In some optional embodiments of the present invention, at least one of the difference rate method, the correction coefficient method, the monthly average line loss method and the monthly average electricity method is selected according to the fault type of the electric energy metering device, including:

[0072] If the fault type is the transformer or energy meter error, the amount of electricity to be refunded will be based on the "0" error and the difference rate method will be used for refunding.

[0073] Among them, taking "0" error as the benchmark means that the starting point of the refund calculation is to assume that the energy meter or transformer has no error, that is, their readings are accurate. Measure and determine the actual error value of the transformer or energy meter, compare the actual error value with the "0" error benchmark, and obtain the error difference. The difference rate method is based on the difference ratio between the actual error and the benchmark error. The difference in electricity caused by the error can be calculated by multiplying the actual measured electricity by the difference ratio. According to the difference in electricity calculated by the difference rate method, the user's electricity bill is refunded accordingly. If the reading of the energy meter or transformer is more than the actual power consumption, the power supply company needs to refund the user; if the reading is less than the actual power consumption, the user needs to pay the additional electricity bill.

[0074] If the fault type is that the secondary voltage drop error exceeds the tolerance, the amount of electricity to be refunded will be based on the allowable voltage drop value and the difference rate method will be used for refund.

[0075] Among them, taking the allowable voltage drop value as the benchmark means that the starting point of the refund calculation is to assume that the voltage drop of the secondary circuit of the energy meter is within the prescribed allowable range. This allowable voltage drop value is a standard value pre-set in the power system to ensure the accurate measurement of the energy meter. Measure the actual voltage drop value of the secondary circuit of the energy meter and compare it with the allowable voltage drop value. Determine the error difference between the actual voltage drop value and the allowable voltage drop value. The difference rate method is based on the difference ratio between the actual voltage drop value and the allowable voltage drop value. The difference in electricity caused by the secondary voltage drop error can be calculated by multiplying the actual measured electricity by the difference ratio. According to the difference in electricity calculated by the difference rate method, the user's electricity bill is refunded accordingly. If the energy meter undercounts the electricity due to the secondary voltage drop error, the power supply company needs to refund the user; if it causes the electricity to be overcounted, the user needs to pay the additional electricity bill.

[0076] In some optional embodiments of the present invention, at least one of the difference rate method, the correction coefficient method, the monthly average line loss method and the monthly average electricity method is selected according to the fault type of the electric energy metering device, including:

[0077] If the fault type is a transformer fault, determine whether the transformer has all three phases faulted. If so, use the correction coefficient method to perform a refund.

[0078] Among them, the transformer failure may be manifested as the primary or secondary fuse fuse, white smoke with a pungent smell, internal discharge sound, spark discharge between the shell and the lead, oil leakage in the shell, etc. If the transformer failure causes all three phases to be affected, the correction coefficient method can be used when calculating the refunded electricity. A correction coefficient is introduced to adjust the calculated electricity to reflect the actual measurement of the electric energy meter under the condition of incorrect wiring or fault. The correction coefficient is determined based on the metering characteristics of the electric energy metering device under the condition of incorrect wiring or fault. For example, when one phase loses current or voltage, the correction coefficient may be 1.5; when two phases lose current or voltage, the correction coefficient may be 3. When the correction coefficient method is used to calculate the refunded electricity, the actual electricity consumed by the user during the fault can be more accurately reflected, and the electricity fee can be refunded accordingly.

[0079] If the fault type is a wiring error of the electric energy metering device, the correction coefficient method is used for compensation; wherein the wiring error includes at least one of the reverse polarity of the voltage circuit and the current circuit and the wrong phase sequence;

[0080] Among them, wiring errors include reverse polarity of voltage circuits and current circuits, that is, the positive and negative poles are connected incorrectly, and the phase sequence is connected incorrectly, that is, the order of each phase in the three-phase circuit is connected incorrectly. The correction coefficient method can correct the deviation of electric energy metering caused by wiring errors. The correction coefficient method determines the difference between the actual power consumption and the power recorded by the electric energy meter by calculating the difference rate between the incorrect wiring and the correct wiring. If the billing electric energy metering device is wired incorrectly, the actual recorded power is used as the base, and the power is refunded according to the difference rate between the correct and incorrect wiring. The correction coefficient is a proportional coefficient calculated and determined based on the incorrect wiring method. After determining the correction coefficient, the power supply company will calculate the amount of power to be refunded based on this coefficient and the actual recorded power.

[0081] If the fault type is that the calculated ratio does not match the actual ratio, the amount of electricity to be refunded will be based on the actual ratio and the difference rate method will be used for refund.

[0082] Among them, it is necessary to first determine the actual multiplier of the electric energy metering device. It can be the proportional relationship between the reading of the electric energy meter and the actual amount of electricity consumed, which is usually determined by the transformation ratio of the voltage transformer and the current transformer. The difference rate method can be used for refund and compensation. The difference rate can be obtained by subtracting the benchmark multiplier from the actual multiplier, and then the metered electricity of the electric energy meter is divided by the benchmark multiplier to get the actual electricity. Then the actual electricity is multiplied by the difference rate to calculate the difference in electricity caused by the error in the multiplier, and the user's electricity bill is refunded accordingly. If the electric energy meter under-measures the electricity due to the error in the multiplier, the power supply company needs to refund the user; if it causes the electricity to be over-measured, the user needs to pay the additional electricity bill.

[0083] In some optional embodiments of the present invention, at least one of the difference rate method, the correction coefficient method, the monthly average line loss method and the monthly average electricity method is selected according to the fault type of the electric energy metering device, and further includes:

[0084] If the transformer is not faulty in all three phases, determine whether the target of the refund is the user or the line;

[0085] Among them, a user refers to a single electricity consumer, while a line refers to a section of the power supply network, which may include multiple users. Therefore, determining whether the subsidy refund object is the user or the line involves the calculation and allocation of the amount of electricity to be refunded.

[0086] If the fault type is that the electric energy metering device stops measuring or is caused by human factors, determine whether the refund object is the user or the line;

[0087] Among them, the cessation of measurement by the electric energy metering device may include situations such as the electric energy meter not rotating and data not being recorded, resulting in the inability to accurately measure the user's electricity consumption. Human factors failures may include deliberate destruction of the electric energy metering device, illegal modification of wiring, etc., resulting in inaccurate metering records. When determining the object of refund and subsidy, it is necessary to consider the nature and scope of the fault. If the fault is limited to the electric energy metering device of a certain user, then the object of refund and subsidy is that user. If the fault affects the metering of the entire line, then the object of refund and subsidy may be all users on the entire line.

[0088] If the object of the subsidy refund is a line, the monthly average line loss method will be used for the refund;

[0089] If the object of subsidy refund is the user, the monthly average electricity consumption method will be used for refund;

[0090] Among them, when the object of subsidy refund is the line, that is, when the fault affects multiple users on the entire line, the monthly average line loss method is used for subsidy refund. The monthly average line loss method takes into account the average line loss of the line during normal operation. By calculating the total power loss of the line during the fault period, and then allocating the corresponding subsidy power according to the proportion or power consumption of each user in the line. The monthly average line loss method allocates the error caused by line loss to all users on the line to ensure that the subsidy power refund of the entire line matches the actual loss. When the object of subsidy refund is a single user, the monthly average power method is used for subsidy refund. The monthly average power method calculates the subsidy power refund based on the user's average power consumption in normal months. The amount of subsidy refund is determined by comparing the user's actual power consumption during the fault period with the average power consumption in normal months.

[0091] In some optional embodiments of the present invention, the monthly average electricity consumption method is used for refunding and subsidizing, including:

[0092] Determine whether the monthly increase in the user's power consumption is less than 10%;

[0093] If yes, the refunded electricity will be calculated based on the normal monthly electricity consumption in the last three months, and it will be determined whether the user used electricity on statutory holidays during the fault period; if yes, the full-day average electricity will be calculated based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if yes, the refunded electricity will take into account the transformer loss; if not, the monthly average electricity method will be used for refund;

[0094] Among them, first collect the user's electricity consumption data for the last three months and calculate the electricity consumption for each month. For each month's electricity consumption, calculate the incremental amount compared with the previous month and compare it with the electricity consumption of the previous month to determine whether the incremental amount is less than 10%. If the incremental amount is less than 10%, the refunded electricity should be converted according to the normal monthly electricity consumption in the last three months, and it is necessary to further determine whether the user has statutory holidays during the fault period. The user's electricity consumption during statutory holidays may affect the calculation of the refunded electricity. For example, the electricity price on statutory holidays in some areas may be adjusted, which may affect the user's electricity consumption habits and electricity consumption. If the user has statutory holidays during the fault period, the full daily average electricity consumption is converted according to the normal monthly electricity consumption. And further determine whether the user is high-voltage side metering. High-voltage side metering refers to the installation of the electric energy metering device on the high-voltage side of the user's power transformer, which is applicable to users with a voltage level of 10 kV and above. Low-voltage side metering refers to the installation of the electric energy metering device on the low-voltage side of the user's power transformer, which is applicable to users with a voltage level below 10 kV. By checking the user's power supply voltage level, if the power supply voltage is 10 kV or above and the metering device is installed on the high-voltage side of the transformer, it can be confirmed that the user is metered on the high-voltage side. If the user is metered on the high-voltage side, the amount of electricity to be refunded must take into account the loss of the transformer, which includes no-load loss and load loss; if the user is metered on the low-voltage side, the monthly average electricity method is used for refunding. The amount of electricity to be refunded is calculated based on the user's average electricity consumption in the past few months, which is suitable for users with relatively stable electricity consumption.

[0095] If not, the amount of electricity to be refunded will be converted based on the normal monthly electricity consumption of the previous month, and it will be determined whether the user has statutory holidays using electricity during the fault period; if so, the average daily electricity consumption will be converted based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if so, the amount of electricity to be refunded must take into account the electricity loss of the transformer; if not, the monthly average electricity method will be used for refund.

[0096] Among them, if the monthly increase in the user's electricity consumption is greater than 10%, the refunded electricity consumption will be converted according to the normal monthly electricity consumption of the previous month, and it will be determined whether the user has statutory holidays during the fault period; if the user has statutory holidays during the fault period, it is necessary to convert the full daily average electricity consumption according to the normal monthly electricity consumption for refund. Determine whether the user is high-voltage side metering; if the user is high-voltage side metering, the transformer loss electricity needs to be considered when refunding the electricity. If the user is not high-voltage side metering, that is, the electric energy metering device is installed on the low-voltage side, the monthly average electricity method should be used for refund.

[0097] In some optional embodiments of the present invention, the refunded electricity is calculated based on the normal monthly electricity consumption in the last three months, and it is determined whether the user consumes electricity on statutory holidays during the fault period, and the following is also included:

[0098] If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is high-voltage side metering; if so, the electricity refunded and subsidized shall take into account the electricity loss of the transformer; if not, use the monthly average electricity method for refund and subsidy;

[0099] Among them, if the refunded electricity amount is converted based on the normal monthly electricity consumption in the last three months, and the user does not use electricity on statutory holidays during the fault period, the actual daily average electricity amount will be converted based on the normal monthly electricity consumption; and it will be further determined whether the user is measured on the high-voltage side; if the user is measured on the high-voltage side, the transformer loss needs to be considered when refunding the electricity amount; if the user is not measured on the high-voltage side, the monthly average electricity method should be used for refunding.

[0100] The refunded electricity consumption is calculated based on the normal monthly electricity consumption of the previous month, and it is determined whether the user used electricity during statutory holidays during the fault period, and also includes:

[0101] If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is metered on the high-voltage side; if so, the electricity subsidy needs to take into account the transformer loss; if not, use the monthly average electricity method for subsidy refund.

[0102] Among them, the refunded electricity volume is converted based on the normal monthly electricity consumption of the previous month. If the user does not use electricity on statutory holidays during the fault period, the actual daily average electricity volume is converted based on the normal monthly electricity consumption; and it is further determined whether the user is measured on the high-voltage side; if the user is measured on the high-voltage side, the transformer loss needs to be considered when refunding the electricity volume. If the user is not measured on the high-voltage side, the monthly average electricity volume method should be used for refunding.

[0103] Figure 2 FIG. 1 is a flow chart of another method for selecting an optimal power withdrawal method provided by an embodiment of the present invention. Figure 2As shown, the method includes: obtaining a user who needs to refund or subsidize electricity 201, and determining whether a reference table is provided 202. If a reference table is provided, further determining whether it is high-voltage side measurement 203. If it is high-voltage side measurement, the refund or subsidize electricity shall take into account the electricity loss of the transformer 2031, and the reference table method shall be used for refund or subsidize. If it is low-voltage side measurement, the reference table method 2032 shall be directly used for refund or subsidize. If no reference transformer is provided, it is necessary to determine the fault type of the electric energy metering device, and the fault type includes inaccurate measurement 204 and error in electric energy measurement or calculation 205. Inaccurate measurement record 204 includes transformer, electric energy meter error 2041, secondary voltage drop error 2042, electric energy metering device stops measuring 2043 and other human factors 2044; error in electric energy measurement or calculation 205 includes transformer fault 2051, electric energy metering device wiring error 2052 and calculated ratio does not match the actual ratio 2053. When the fault is the transformer or electric energy meter error exceeding the tolerance 2041, the error of "0" is used as the reference 20411, and the difference rate method 2046 is selected for refund. When the fault is the secondary voltage drop error exceeding the tolerance 2042, the allowable voltage drop value is used as the reference 20421, and the difference rate method 2046 is selected for refund. When the fault is the electric energy metering device stopping metering 2043 and other human factors 2044, it is necessary to determine whether the refund object is the user 2045. If the refund object is the user, the monthly average electricity method 2047 is selected for refund. If the refund object is the line, the monthly average line loss method 2048 is selected for refund. When the fault is the transformer fault 2051, it is necessary to determine whether the transformer has all three phases fault 20511; if the transformer has all three phases fault, the correction coefficient method 2054 is selected for refund. If the transformer is not a three-phase fault, it is necessary to determine whether the object of subsidy refund is the user 2045. If the object of subsidy refund is the user, select the monthly average electricity method 2047 for subsidy refund. If the object of subsidy refund is the line, select the monthly average line loss method 2048 for subsidy refund. When the fault is the wiring error of the electric energy metering device 2052, the wiring error of the electric energy metering device includes the reverse polarity of the voltage circuit and the current circuit, and the wrong phase sequence 20521. At this time, select the correction coefficient method 2054 for subsidy refund. When the fault is the discrepancy between the calculated multiplier and the actual multiplier 2053, the actual multiplier is used as the basis 20531, and the difference rate method 2046 is selected for subsidy refund.

[0104] Figure 3 is a flow chart of the difference rate method provided by an embodiment of the present invention. In some optional embodiments of the present invention, such as Figure 3 As shown in S301, the difference rate method is used for refund and subsidy, including:

[0105] S302, the fault is that the transformer, the energy meter, and the secondary voltage drop error are out of tolerance, S3021, the difference in electricity = |(actual error - reference error) × the measured electricity|; S3022, determine whether the actual error is greater than the reference value; S304, if so, return the difference in electricity; S305, if not, make up for the difference in electricity;

[0106] Among them, if the fault is that the mutual inductor or electric energy meter error exceeds the tolerance, the amount of electricity to be refunded or compensated is based on the "0" error; if the fault is that the secondary voltage drop error exceeds the tolerance, the amount of electricity to be refunded or compensated is based on the allowable voltage drop value; the difference in electricity is calculated according to the difference in electricity = |(actual error - reference error) × measured electricity|, and it is determined whether the actual error is greater than the reference value. If the actual error is greater than the reference value, the difference in electricity is refunded; if the actual error is less than the reference value, the difference in electricity is compensated.

[0107] S303. The fault is that the calculated ratio does not match the actual ratio. S3031. The difference in electricity = |(calculated ratio - reference ratio) × calculated electricity / reference ratio|; S3032. Determine whether the reference ratio is greater than the calculated ratio; S304. If so, return the difference in electricity; S305. If not, make up for the difference in electricity.

[0108] Among them, the fault is that the calculated ratio does not match the actual ratio. The refunded electricity is based on the actual ratio. The difference in electricity is calculated according to the difference in electricity = |(calculated ratio - benchmark ratio) × calculated electricity / benchmark ratio|, and it is determined whether the benchmark ratio is greater than the calculated ratio. If the benchmark ratio is greater than the calculated ratio, the difference in electricity will be refunded; if the benchmark ratio is less than the calculated ratio, the difference in electricity will be compensated.

[0109] Figure 4 is a flow chart of the correction coefficient method provided by an embodiment of the present invention. In some optional embodiments of the present invention, such as Figure 4 As shown, S401, using the correction coefficient method to refund, including:

[0110] S402. Calculate the correction coefficient: k = P / P', where P is the secondary power of correct wiring and P' is the secondary power of incorrect wiring; S403. Difference power = (k-1) × measured power; S404. Determine whether k-1 is less than 0; S405. If so, return the difference power; S406. If not, make up for the difference power.

[0111] The correction coefficient is calculated as follows: k = P / P'. The correction coefficient k is the ratio of the secondary power of the metering device with correct wiring to the secondary power of the metering device with incorrect wiring. The difference in power is determined by multiplying (k-1) by the measured power. If k-1 is less than 0, the difference in power is returned; if k-1 is greater than 0, the difference in power is compensated.

[0112] Figure 5 It is a flow chart of the monthly average line loss method provided by an embodiment of the present invention. Figure 6 is a flow chart of the monthly average electricity method provided by an embodiment of the present invention. In some optional embodiments of the present invention, such as Figure 5 As shown in S501, the monthly average line loss method is used for refunding, including:

[0113] S502, obtaining the power supply and power sales of the faulty line in the faulty month and the monthly average line loss rate in the fault-free month;

[0114] Among them, the power supply of the faulty line in the faulty month refers to the total amount of electric energy supplied by the power supply company to the faulty line in the month when the fault occurred. The amount of electricity sold by the faulty line in the faulty month refers to the total amount of electric energy actually sold by the power supply company to users in the month when the fault occurred. The amount of electricity sold refers to the amount of electric energy actually used by users after being measured by the electric meter. The monthly average line loss rate in the fault-free month refers to the average value of line loss in each month in the month when no fault occurs. The line loss rate refers to the percentage of electric energy lost due to line loss in the process of power transmission and distribution to the total power supply. The line loss rate can help power companies evaluate the operating efficiency and loss level of the line. The power supply and electricity sales of the faulty line in the faulty month and the monthly average line loss rate in the fault-free month can be obtained through the metering automation system.

[0115] S503, determine whether the fault month participates in the ring network operation; S505, if so, obtain the monthly power supply and power sales of the lines participating in the ring network operation in the fault month, and the monthly average line loss rate in the fault-free month; S5051, select the 3-month average line loss rate of the lines participating in the ring network operation that do not participate in the ring network operation in the fault-free month; S5052, calculate the monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; S5053, calculate the combined monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; S5054, difference power = actual power sales - power supply = [power sales in the fault month / (1-combined monthly average line loss rate of the fault month in the fault-free month)]-power supply in the fault month; S506, determine whether the difference power is greater than 0; S508, if yes, make up the difference power; S509, if not, return the difference power;

[0116] Among them, the ring network is a power supply network structure in which multiple power supply nodes are connected in a ring to form a closed network. In the ring network, electricity can flow along a ring path to form a closed loop. Each node can receive and send electricity. The redundant design of the ring network allows electricity to bypass the fault point through other nodes and continue to be transmitted when a node or line fails. If the line participates in the ring network operation in the fault month, the monthly power supply and power sales of the lines participating in the ring network operation in the fault month and the monthly average line loss rate of the fault-free month are obtained, and the three-month average line loss rate of the lines participating in the ring network operation that do not participate in the ring network operation in the fault-free month is screened, and the monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month is calculated. The combined monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month is calculated. The difference in electricity is determined based on the difference in electricity = actual electricity sales - power supply = [electricity sales in the fault month / (1-combined monthly average line loss rate of the fault month in the non-fault month)] - power supply in the fault month. If the difference in electricity is greater than 0, the difference in electricity is compensated; if the difference in electricity is less than 0, the difference in electricity is refunded.

[0117] S504, if not, filter the average line loss rate of the faulty line in the three months when it does not participate in the ring network operation in the non-fault months; S5041, calculate the monthly average line loss rate of the faulty line in the non-fault months; S5042, difference in electricity = actual electricity sales - power supply = [electricity sales in the faulty month / (1 - monthly average line loss rate of the faulty line in the non-fault months)] - power supply in the faulty month; S506, determine whether the difference in electricity is greater than 0; S508, if yes, make up the difference in electricity; S507, if no, return the difference in electricity;

[0118] Among them, the faulty month does not participate in the ring network operation, the 3-month average line loss rate of the faulty line that does not participate in the ring network operation in the fault-free months is screened, and the monthly average line loss rate of the faulty line in the fault-free months is calculated; according to the difference in electricity = actual electricity sales - power supply = [electricity sales in the faulty month / (1-month average line loss rate of the faulty line in the fault-free months)] - power supply in the faulty month, the difference in electricity is determined. If the difference in electricity is greater than 0, the difference in electricity is compensated; if the difference in electricity is less than 0, the difference in electricity is returned.

[0119] like Figure 6 As shown, S601, the monthly average electricity method is used for refund and subsidy, including:

[0120] S602, obtaining the user's electricity consumption in a normal month through the metering automation system; S603, converting the normal monthly electricity consumption into daily average electricity consumption according to the electricity consumption trend and whether there are statutory holidays; S604, determining the fault date and the number of days to be compensated;

[0121] Among them, normal monthly electricity consumption refers to the user's electricity consumption when there is no failure or other abnormal situation. The user's electricity consumption in a normal month can be obtained through the metering automation system. According to the electricity consumption trend and whether there are statutory holidays, the normal monthly electricity consumption is converted into daily average electricity consumption in order to more accurately reflect the user's daily electricity consumption without the influence of failures, taking into account factors such as the number of days in the month, working days and non-working days, and holidays. If the month contains statutory holidays, the daily average electricity consumption may need to be adjusted to reflect the impact of holidays on electricity consumption. At the same time, the date of the failure and the number of days to be compensated are determined. The refunded electricity can be calculated more fairly and accurately to ensure that users can get reasonable electricity fee refunds based on actual electricity consumption when the electric energy metering device fails.

[0122] S605, determine whether the user is metered on the high-voltage side; S606, if yes, transformer loss power = monthly loss power × number of months to be supplemented, S608, difference power = (average daily power consumption × number of days to be supplemented + transformer loss power) - metered power; S609, determine whether the difference power is greater than 0; S611, if yes, make up the difference power; S610, if no, return the difference power;

[0123] Among them, the user is measured on the high-voltage side. The difference in electricity is determined according to the transformer loss electricity = monthly loss electricity × number of months to be compensated, and the difference in electricity = (average daily electricity consumption × number of days to be compensated + transformer loss electricity) - measured electricity. If the difference in electricity is greater than 0, the difference in electricity will be compensated; if the difference in electricity is less than 0, the difference in electricity will be refunded.

[0124] S607, if not, the transformer power loss is equal to 0; S608, the difference in power = (average daily power consumption × number of days to be supplemented + transformer power loss) - calculated power; S609, determine whether the difference in power is greater than 0; S611, if yes, make up for the difference in power; S610, if no, return the difference in power.

[0125] Among them, the user is measured on the low-voltage side. According to the transformer loss power equal to 0, the difference power = (daily average power consumption × number of days to be supplemented + transformer loss power) - measured power, and the difference power is determined; if the difference power is greater than 0, the difference power is supplemented; if the difference power is less than 0, the difference power is refunded.

[0126] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0127] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for selecting an optimal power withdrawal method, characterized in that: The method comprises: Obtain users who need to refund or reimburse electricity; Determining whether the electric energy metering device corresponding to the user is provided with a reference table; If so, refund and compensation will be made according to the reference table method; If not, at least one of the difference rate method, correction coefficient method, monthly average line loss method and monthly average electricity method is selected for refund according to the fault type of the electric energy metering device.

2. The method according to claim 1, characterized in that The fault types include inaccurate metering records and errors in electric energy metering or calculation; The inaccurate metering records include: transformer error out of tolerance, electric energy meter error out of tolerance, secondary voltage drop error out of tolerance, electric energy metering device stopping metering and human factor failure; The errors in electric energy metering or calculation include: mutual inductor failure, wrong wiring of the electric energy metering device, and the calculated ratio not being consistent with the actual ratio.

3. The method according to claim 1, characterized in that At least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, including: If the fault type is that the transformer or the electric energy meter has an error exceeding the tolerance, the amount of electricity to be refunded and compensated is based on the "0" error and the difference rate method is used for refunding and compensation; If the fault type is that the secondary voltage drop error exceeds the tolerance, the amount of electricity to be refunded will be based on the allowable voltage drop value and the difference rate method will be used for refunding.

4. The method according to claim 1, characterized in that: At least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, including: If the fault type is a transformer fault, determine whether the transformer has a three-phase fault. If so, use the correction coefficient method to perform a refund. If the fault type is a wiring error of the electric energy metering device, the correction coefficient method is used for compensation; wherein the wiring error includes at least one of reverse polarity of the voltage circuit and the current circuit and wrong phase sequence connection; If the fault type is that the calculated ratio does not match the actual ratio, the amount of electricity to be refunded will be based on the actual ratio and the difference rate method will be used for refund.

5. The method according to claim 1, characterized in that At least one of a difference rate method, a correction coefficient method, a monthly average line loss method and a monthly average electricity method is selected according to the fault type of the electric energy metering device, and further includes: If the transformer is not faulty in all three phases, determine whether the target of the refund is the user or the line; If the fault type is that the electric energy metering device stops measuring or is caused by human factors, determine whether the refund object is the user or the line; If the object of the subsidy refund is a line, the monthly average line loss method will be used for the refund; If the object of subsidy refund is the user, the above-mentioned monthly average electricity consumption method will be used for refund.

6. The method according to claim 5, characterized in that The monthly average electricity consumption method is used for refund and subsidy, including: Determine whether the monthly increase in the user's power consumption is less than 10%; If yes, the refunded electricity will be calculated based on the normal monthly electricity consumption in the last three months, and it will be determined whether the user used electricity on statutory holidays during the fault period; if yes, the full-day average electricity will be calculated based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if yes, the refunded electricity will take into account the transformer loss; if not, the monthly average electricity method will be used for refund; If not, the amount of electricity to be refunded will be converted based on the normal monthly electricity consumption of the previous month, and it will be determined whether the user has statutory holidays using electricity during the fault period; if so, the average daily electricity consumption will be converted based on the normal monthly electricity consumption; it will be determined whether the user is metered on the high-voltage side; if so, the amount of electricity to be refunded must take into account the electricity loss of the transformer; if not, the monthly average electricity method will be used for refund.

7. The method according to claim 6, characterized in that The refunded electricity consumption is calculated based on the normal monthly electricity consumption in the last three months, and it is determined whether the user has consumed electricity on statutory holidays during the fault period. It also includes: If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is high-voltage side metering; if so, the electricity refunded and subsidized shall take into account the electricity loss of the transformer; if not, use the monthly average electricity method for refund and subsidy; The refunded electricity consumption is calculated based on the normal monthly electricity consumption of the previous month, and it is determined whether the user used electricity during statutory holidays during the fault period, and also includes: If not, calculate the actual daily average electricity consumption according to the normal monthly electricity consumption; determine whether the user is metered on the high-voltage side; if so, the electricity subsidy needs to take into account the transformer loss; if not, use the monthly average electricity method for subsidy refund.

8. The method according to claim 3, characterized in that The refunding method using the difference rate method includes: The fault is that the mutual inductor, energy meter, and secondary voltage drop error are out of tolerance, and the difference in electricity = |(actual error - reference error) × measured electricity|; determine whether the actual error is greater than the reference value; if so, return the difference in electricity; if not, make up for the difference in electricity; The fault is that the calculated ratio does not match the actual ratio, the difference in electricity = |(calculated ratio - reference ratio) × calculated electricity / reference ratio|; determine whether the reference ratio is greater than the calculated ratio; if so, return the difference in electricity; if not, make up for the difference in electricity.

9. The method according to claim 4, characterized in that The correction coefficient method is used for refunding, including: Calculate the correction coefficient: k = P / P', where P is the secondary power of the correct wiring and P' is the secondary power of the incorrect wiring; the difference in power = (k-1) × the measured power; determine whether k-1 is less than 0; if so, return the difference in power; if not, make up for the difference in power.

10. The method according to claim 6, characterized in that The monthly average line loss method is used for refunding, including: Obtain the power supply and sales volume of the faulty line in the faulty month and the monthly average line loss rate in the fault-free month; Determine whether the fault month participates in the ring network operation; if so, obtain the monthly power supply and power sales of the lines participating in the ring network operation in the fault month, and the monthly average line loss rate in the fault-free month; select the 3-month average line loss rate of the lines participating in the ring network operation that do not participate in the ring network operation in the fault-free month; calculate the monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; calculate the combined monthly average line loss rate of the lines participating in the ring network operation in the fault month and the fault-free month; difference power = actual power sales - power supply = [power sales in the fault month / (1-combined monthly average line loss rate of the fault month in the fault-free month)] - power supply in the fault month; determine whether the difference power is 0; if so, make up the difference power; if not, return the difference power; If not, filter the average line loss rate of the faulty line in the three months when it does not participate in the ring network operation in the fault-free months; calculate the monthly average line loss rate of the faulty line in the fault-free months; difference in electricity = actual electricity sales - power supply = [electricity sales in the faulty month / (1-the monthly average line loss rate of the faulty line in the fault-free months)] - the power supply in the faulty month; determine whether the difference in electricity is greater than 0; if so, make up the difference in electricity; if not, return the difference in electricity; The monthly average electricity consumption method is used for refund and subsidy, including: Get the user's electricity consumption in a normal month; Convert normal monthly electricity consumption into daily average electricity consumption based on electricity consumption trends and whether there are statutory holidays; Determine the date of failure and the number of days required to make up; Determine whether the user is metering on the high-voltage side; if so, transformer power loss = monthly power loss × number of months to be compensated, difference power = (average daily power consumption × number of days to be compensated + transformer power loss) - metered power; determine whether the difference power is greater than 0; if so, compensate the difference power; if not, return the difference power; If not, the transformer loss power is equal to 0; the difference power = (average daily power consumption × number of days to be supplemented + transformer loss power) - calculated power; determine whether the difference power is greater than 0; if so, make up the difference power; if not, return the difference power.

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