CN117455418A - Automatic settlement method and system for industrial and commercial photovoltaic benefits - Google Patents
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Abstract
The invention provides an automatic settlement method and system for industrial and commercial photovoltaic benefits, wherein a measuring device is additionally arranged in a parallel network list and a gateway list in a photovoltaic power station system, electric quantity data are uploaded to a server, and segmented electric quantity is counted in a key node numerical difference mode according to a current period segmented electric price dividing rule published by a local power grid company; meanwhile, a plurality of electric meter data accurate complement methods are provided according to the characteristics of the simultaneous air power generation, so that the influence caused by data loss is avoided; when the settlement period is reached, correcting the electricity consumption data according to the electricity charge list, equivalently calculating other additional charges, automatically calculating the actual photovoltaic settlement income in the period based on the discount rate of the photovoltaic equivalent electricity charge, and generating a settlement list. The invention aims to automatically and accurately calculate the spontaneous and self-used partial electric quantity and the cost of the industrial and commercial photovoltaic, and comprises a key data complement method, wherein the cost calculation is based on an electric charge list, the fault tolerance rate of the system is high, and the reliability of a settlement result is high.
Description
Technical Field
The invention relates to the technical field of industrial and commercial photovoltaic benefit calculation, in particular to an industrial and commercial photovoltaic benefit automatic settlement method and system.
Background
At present, industrial and commercial photovoltaics have two modes of full internet surfing, spontaneous self-use and residual electricity surfing in specific implementation, wherein the settlement mode of the full internet surfing mode is relatively simple, and the spontaneous self-use and residual electricity surfing mode is more in line with expected benefits of owners but provides higher requirements for photovoltaic benefit calculation. In the mode, the power grid company only provides a mains electricity consumption list and a photovoltaic internet income list which are settled through a gateway table, and the photovoltaic spontaneous electricity consumption cost is calculated by a photovoltaic power station and settled with the mains, so that accurate and authoritative data and algorithms are required to provide support, and the system is difficult to realize in a conventional manual meter reading mode.
Industrial and commercial photovoltaic power stations employing a self-generating, self-sustaining, surplus electricity internet surfing mode generally have the following characteristics: the power station is at or near the electricity utilization site; most of photovoltaic power generation can be consumed in situ, and a small part of power is connected to the Internet; photovoltaic benefit is greatly influenced by peak valley time period division; the industrial and commercial electric charge comprises additional charges such as damage, sign, force adjustment and the like. The photovoltaic power generation process comprises the following steps: the inverter converts direct current of the photovoltaic module into alternating current, the alternating current is connected into a bus in a factory and a commercial factory after passing through the parallel net list, if the direct current cannot be completely consumed in the factory and the commercial factory, the direct current is fed back to a power grid through a gateway table on the bus in the factory, and otherwise, commercial power is used as required through the gateway table.
In the prior art, the peak flat valley electric quantity of the photovoltaic is acquired by an ammeter in a time-sharing manner, and uncertainty of time-sharing is not considered; the data loss condition can not be combined with the photovoltaic power generation to actually provide a perfect solution when the ammeter data is transmitted in a measurement communication mode, and the reliability is not high. Therefore, the existing photovoltaic spontaneous self-use income settlement formula is relatively rough, the cost refinement cannot be realized, and the reliability of the photovoltaic income settlement result is required to be improved.
Disclosure of Invention
The invention aims to solve the problems that: the automatic settlement method and the automatic settlement system for the industrial and commercial photovoltaic benefits are used for automatically and accurately calculating the spontaneous and automatic partial electric quantity and the cost of the industrial and commercial photovoltaic.
The invention adopts the following technical scheme: an automatic settlement method for industrial and commercial photovoltaic benefits comprises the following steps:
s1, acquiring the range of the next settlement period of a photovoltaic power station and a segmentation electricity price dividing rule in the period, and generating a key node table;
s2, formulating a data acquisition rule according to the key node table, acquiring electric quantity data through a measuring device, and reporting the electric quantity data to a server;
s3, the server acquires the acquired electric quantity data, processes and stores the electric quantity data, and performs critical node data complement and electric quantity correction;
s4, calculating theoretical electric charge in a settlement period;
and S5, calculating the photovoltaic equivalent additional cost in the settlement period, checking the supplementary record data and generating a photovoltaic equivalent electric bill.
Specifically, in step S1, the periodic divided power price dividing rule includes: and dividing the electricity consumption peak, flat valley and deep valley periods in the period and the electricity price in each period, determining each key node according to the separation time points of each period, and automatically forming a key node table in the period.
Specifically, in step S2, the data collection rule includes: a regular data collection rule and a node data collection rule, wherein,
a conventional data collection rule comprising: the acquisition time, the acquisition frequency and the acquisition data content of the conventional data;
a node data collection rule comprising: the main inquiry time is used for inquiring at the moment of the key node; the front and back inquiry time is provided, and inquiry is carried out for a plurality of seconds/min before the key node and after the key node; and (5) carrying out overtime review, and carrying out query again without response when the overtime is exceeded.
The measuring device is added in the photovoltaic power station and on the netlist and/or the industrial and commercial gateway table, and establishes communication connection with the server and the intelligent ammeter equipment at the user side through a wired network or a wireless connection mode; the server issues a query instruction according to the data acquisition rule, the measuring device receives the server instruction and then communicates with the intelligent ammeter equipment at the user side, acquires current electric quantity data of the intelligent ammeter at the user side, and reports the electric quantity data to the server.
Specifically, in step S3, after the server obtains the electric quantity data of the smart electric meter, the server performs data processing and storage, and the rule is as follows:
s3.1, the data of the main query time and the backup query time are not lost, and the data are stored and marked as normal;
s3.2, the data of the main query time are normal, at least one of the data of the front and back backup query time is lost, and the data is stored and marked as the main data are normal;
s3.3, data of the main query time are lost, at least one of the data of the front and back backup query time exists, the measuring equipment is a parallel net list, automatic data complement is carried out, and the data is stored and marked as automatic data complement after automatic data complement;
s3.4, marking the loss condition of other data as data loss, performing manual supplementary recording, calculating and storing reference data of equipment to be supplementary recorded meeting the condition; for the equipment to be complemented which does not meet the condition, taking the latest data before the equipment data loss moment as reference data, and marking the latest data as similar data;
s3.5, electric quantity correction is carried out: according to the electric quantity data of each node of the intelligent electric meter, calculating sectional electric quantity data of each period in the period, and correcting the sectional electric quantity in a contracted error range when the settlement period is reached, so that the sum of the sectional electric quantities is equal to the difference between the initial electric quantity and the final electric quantity in the actual period, wherein the electric quantity correction calculation formula is as follows:
（1）
wherein,q´in order to correct the amount of the segment charge after correction,qin order to correct the amount of the segment charge before correction,Qfor the actual total charge obtained by the start-to-end charge difference in the cycle,is the total power calculated from the sum of the segment powers.
The automatic complement principle is as follows: and recognizing that the electric quantity ratio of each grid-connected meter in the same time period is the same, namely the condition of the photovoltaic power generation under the air is the same, and calculating lost data through data collected normally, wherein the formula is as follows:
（2）
deforming it into:
（3）
wherein,na photovoltaic parallel netlist for data loss of a main query time in a power station,for electricity metersnAt the moment of timei-1、iAndi+1The measurement data of the time period is used,man electricity meter in the normal state of this critical node in the power station,for electricity metersmAt the moment of timei-1、iAndi+1Measurement data at that time;
the calculation rule of the reference data in the manual complement is as follows:
the equipment to be complemented is a grid-connected table: the reference data calculation is carried out according to the formulas (2) and (3), and the selected time period is extended to 24 hours of the whole natural day of the day;
the device to be complemented is a gateway table: if the data of the front and back backup query time points are not lost, adopting the data as reference data; if the data of the front and back backup query time points are lost, based on the principle that the electricity consumption is approximately the same in the same time period when the normal continuous operation is performed in the industrial and commercial scene, the method is calculated according to the following formula (4):
（4）
wherein,Q j is the firstjAmmeter measurement reading at the moment of data loss;dto be selected as the firstjThe number of days (typically 2 to 5 days are chosen) after the day in which no data is lost,Q j-d is the firstjBefore or after the daydThe heaven corresponds to the firstjAmmeter measurement reading at the moment of data loss.
Specifically, in step S4, after the settlement period is reached and the automatic data complement and electric quantity correction are completed, based on the segmented electric quantity data or the reference data, calculating a theoretical electric charge without manual confirmation and without additional charge consideration, as a preliminary reference for actual settlement:
theoretical electricity fee = spontaneous electricity fee + net electricity fee-electricity fee of power station + photovoltaic subsidy;
the electricity charge of the power station refers to electricity consumption of the photovoltaic power station and is obtained by metering the electricity consumption direction of a grid-connected meter;
the specific formula of the theoretical electric charge is as follows:
（5）
wherein,、/>the power generation directions of the parallel net list and the gateway list are respectively segmented into electric quantity,pin order to segment the electricity price of electricity,ηfor discount rate->For photovoltaic online electricity price, +.>Segmenting electric quantity for power utilization direction of grid-connected meter, < >>The electricity price is used for the photovoltaic patch,
if the electric quantity data are lost, adopting reference data at the moment;
it should be noted that, in the settlement of the power station and the commercial user, the internet electricity fee and the photovoltaic patch in the above formula (5) need to be removed.
Specifically, step S5 includes the following sub-steps:
s5.1, collating complement data: before reaching the settlement period, setting an automatic confirmation condition for the automatically-recorded electric quantity data, wherein the automatic confirmation is carried out when the automatic confirmation condition is reached, and the manual confirmation or modification is carried out when the automatic confirmation condition is not reached, wherein the confirmed or modified electric quantity data is used for calculating the photovoltaic equivalent electric charge;
s5.2, calculating the photovoltaic equivalent additional cost: the industrial and commercial electric charges comprise conventional segmented electric charges and additional charging project electric charges, wherein the additional charging project electric charges comprise: the method comprises the steps of matching a power consumption rate, a power regulation power consumption rate, a preferred generation and preferred purchase curve with a deviation power consumption rate and a power generation side return cost, wherein the partial cost is divided by a local electric company and calculated according to the conditions of industrial and commercial power consumption, the positive and negative of the partial cost are obtained, and the corresponding power consumption rate is obtained by multiplying the charging power by the power price; after the settlement period is reached and the business electric bill is obtained, the photovoltaic equivalent additional cost can be calculated as follows:
photovoltaic equivalent additional cost = spontaneous self-use total electricity quantity x additional electricity price
The self-power-consumption total electric quantity is the total electric quantity of photovoltaic power generation used by industry and commerce, namely photovoltaic power generation capacity-photovoltaic internet power quantity, and is equal to the charging electric quantity in the electric charge of the additional charging project of industry and commerce;
the method for calculating the additional cost of the industrial and commercial electric charge comprises the following steps: charging electric quantity (self-power-consumption total electric quantity) is added with electricity price;
s5.3, generating a photovoltaic equivalent electric chargeAnd (3) single: photovoltaic equivalent electric chargeThe calculation formula is as follows:
（6）
wherein,for the additional electricity price, each data related to the electric quantity adopts the data after confirmation or modification.
On the other hand, the invention also provides an automatic settlement system for industrial and commercial photovoltaic benefits, which is used for implementing any of the automatic settlement methods for industrial and commercial photovoltaic benefits, and comprises the following steps: the system comprises an electricity price configuration module, an equipment configuration module, an ammeter data module, a theoretical electricity fee module and a photovoltaic equivalent electricity fee module;
and the electricity price configuration module is used for: the method is used for manually inputting or acquiring the range of the next settlement period in the power grid official network, and distributing electricity prices in the period in a partitioned manner, and automatically forming a key node table;
and a device configuration module: the measuring device is used for configuring each ammeter, and is used for downloading a power generation amount measuring task and receiving power measurement data;
ammeter data module: the system is used for storing and displaying the electric quantity data and the state of each electric meter at each moment and modifying or confirming the electric quantity data and the state of each electric meter;
and an alarm module: the method comprises the steps of monitoring the data acquisition condition of key nodes in the current period, and timely notifying a manager to check and complement if a preset abnormal state occurs, wherein the abnormal state comprises data loss;
theoretical electric charge module: the system is used for automatically generating theoretical electricity charges in a settlement period and recalculating according to modification;
equivalent electric charge module: and when the period is over, generating a photovoltaic equivalent electric bill of the period based on the manually recorded or commercial periodic electric bill acquired in the power grid official network.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
1. according to the invention, metering devices are additionally arranged on the grid-connected meter and the gateway meter, the photovoltaic theoretical settlement electric charge is calculated, and then equivalent conversion is carried out on additional charge and correction is carried out on the divided electric quantity according to the electric charge list in the power grid settlement period, so that more accurate and reliable photovoltaic actual settlement electric charge is obtained;
2. the settlement method of the invention takes the numerical value difference between key node moments as the basis for calculating peak flat valley electric quantity and electric charge, and has better fault tolerance and accuracy.
3. According to the settlement method, calculation of the power consumption of the photovoltaic (such as starting of an inverter, power consumption of monitoring equipment and the like) is added in a calculation formula of the photovoltaic settlement electric charge, so that the fine operation management level is improved;
4. the settlement method realizes the supplementary recording of the lost data of the key nodes by means of the data proportion conversion of other equipment under the same time and space, the proportion calculation at the same time in a plurality of days, the manual recording and the like, and has better reliability;
5. when the industrial and commercial photovoltaic power station and the owner settle accounts, the invention can synchronously and automatically generate the photovoltaic equivalent electric charge settlement list along with the electric charge list of the owner unit and the power grid, thereby avoiding a large amount of manual calculation, reducing the cost and ensuring accurate and unified data.
Drawings
FIG. 1 is a flow chart of the industrial and commercial photovoltaic revenue settlement method of the present invention;
FIG. 2 is a block diagram of the industrial and commercial photovoltaic revenue automatic settlement system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the application will be further elaborated in conjunction with the accompanying drawings, and the described embodiments are only a part of the embodiments to which the present invention relates. All non-innovative embodiments in this example by others skilled in the art are intended to be within the scope of the invention. Meanwhile, the step numbers in the embodiments of the present invention are set for convenience of illustration, the order between the steps is not limited, and the execution order of the steps in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.
The invention relates to an automatic settlement method for industrial and commercial photovoltaic benefits, which is shown in figure 1 and comprises the following steps:
s1, acquiring the range of the next settlement period of a photovoltaic power station and a segmentation electricity price dividing rule in the period, and generating a key node table;
the power grid company can publish in advance the segmentation price dividing rule in the next period, wherein the segmentation price dividing rule comprises the division of peak flat valley deep valley time periods and the price of the segmentation price dividing rule, and each key node is determined according to the separation time points to form a key node table in the period.
S2, formulating a data acquisition rule according to the key node table, acquiring electric quantity data through a measuring device, and reporting the electric quantity data to a server;
as shown in fig. 2, in the photovoltaic power station system, the photovoltaic grid-connected meter is connected to the photovoltaic module, and the business gateway meter is connected to the power grid.
The method comprises the steps that a measuring device is additionally arranged on a photovoltaic parallel net list and an industrial and commercial gateway meter, and the device is communicated with an intelligent ammeter through infrared signals, 485 lines and the like to obtain current electric quantity data of the ammeter; meanwhile, the device communicates with the server through wired networks, wireless Internet of things and the like. The server is connected to the power grid official network and the user terminal, issues a query instruction according to the node data acquisition rule, and the measuring device receives the server instruction, communicates with the intelligent ammeter and reports the current electric quantity data.
The node data collection rules generally include: the main inquiry time is used for inquiring at the moment of the key node; the inquiry time is prepared, and inquiry is carried out for a plurality of seconds/min before and after the key node; and (5) carrying out overtime review, and carrying out query again without response for a certain time.
It should be specifically noted that the node data collection rules herein do not affect conventional data collection, namely: when the node is not at the key node, conventional data acquisition and storage are still carried out according to the self-set time interval of 5 minutes or 10 minutes and the like.
S3, the server acquires the acquired electric quantity data, processes and stores the electric quantity data, and performs critical node data complement and electric quantity correction;
after data measurement reporting is performed according to the node data acquisition rules, the data needs to be processed, and the rules are as follows:
1) When the data of the key node moment and the previous and subsequent query time are not lost, the data is stored and marked as normal;
2) When the data of the key node at the moment is normal and any data of the previous and subsequent inquiry time is lost, the data is stored and marked as 'main data is normal';
3) When the data is lost at the moment of the key node, any one data exists in the front and back inquiry time, and the measurement equipment is a grid-connected table, the automatic data complement is performed.
The supplementary recording principle is to identify that the electric quantity ratio of each grid-connected meter in the same time period is the same (the same under-air photovoltaic power generation condition is the same), and the lost data can be calculated through other normally collected data, and the automatic supplementary recording of the data is marked as 'automatic supplementary recording'.
4) Other data loss conditions are labeled "data loss" and reference data is provided for use in manual supplemental recording.
5) And (3) electric quantity correction: when the settlement period is reached, the sum of the sectional electric quantity is unequal to the reading difference of the initial electric quantity and the final electric quantity due to measurement errors and the like, and the sectional electric quantity needs to be corrected within the error allowable range agreed with the owners so as to ensure that the sum of the sectional electric quantity is equal to the difference of the initial electric quantity and the final electric quantity of the actual period.
S4, calculating theoretical electricity charge in a settlement period according to the reference data/formula;
after the settlement period is reached and the automatic data complement and electric quantity correction are completed, the data can be used for calculating theoretical electric charges which are not confirmed manually and do not consider additional charges, and the theoretical electric charges are used as a preliminary reference for actual settlement.
Theoretical electricity fee = spontaneous electricity fee + online electricity fee-electricity fee + electricity fee for power station + photovoltaic patch.
The specific formula is as follows:
（7）
if the electric quantity data is lost, the reference data at the moment is adopted.
When the power station and the business users settle accounts, the internet electricity fee and the photovoltaic patch in the formula are removed.
The electricity consumption of the power station in the formula is measured by the electricity consumption direction of the grid-connected meter, and comprises the daily electricity consumption of auxiliary facilities such as alternating current side power supply, photovoltaic weather stations, monitoring measurement and the like when part of types of inverters are started.
For example, in a conventional commercial distributed photovoltaic power plant with a 30MWh power generation for one month, the power consumption of the plant is about 120kWh per month, with a ratio of about 0.4%, and it is necessary to make this part of the cost clear in long-period fine operation.
And S5, calculating the photovoltaic equivalent additional cost in the settlement period, checking the supplementary record data and generating a photovoltaic equivalent electric bill.
Before the settlement period is reached, the automatic supplementary record electric quantity data is required to be manually confirmed or modified, a certain condition can be set, and the automatic confirmation can be carried out after the settlement period is reached, and the confirmed or modified data can be used for calculating the photovoltaic equivalent electric charge.
For example, there is no "close data" flag in the cycle, or the error between the segment charge and the difference from the cycle start-end reading charge is less than 0.5%, etc.
In the industrial and commercial electric charge, besides the conventional sectional electric charge, the method also comprises the steps of charging and paying the electric charge, substituting the electric charge, adjusting the electric charge by force, matching the excellent purchase curve with the deviation electric charge, returning the electric charge on the power generation side and the like, wherein the partial electric charge is divided by a local electric company and calculated according to the industrial and commercial electric charge condition, has positive and negative values, and the electric charge is obtained by multiplying the electric charge by the charging electric charge. And after the settlement period is reached and the business electric bill is obtained, the photovoltaic equivalent additional cost can be calculated.
In one embodiment of the present invention, taking an industrial and commercial photovoltaic power station with a loading capacity of about 5000kWp as an example, the electric quantity related data is similar to but not real data, and the photovoltaic benefit automatic settlement method specifically comprises the following steps:
s1, acquiring a periodic segmented electricity price dividing rule, and generating a key node table:
the current month period and the electricity price published in advance by the electric power network company are divided into: 00:00-10:00 are normal times, and the electricity price is 0.6582 yuan/kWh; when 10:00-11:00 are grains, the electricity price is 0.5888 yuan/kWh; 11:00-14:00 are deep valleys, and the electricity price is 0.569 yuan/kWh; when 14:00-15:00 are grains, the electricity price is 0.5888 yuan/kWh; 15:00-17:00 are peacetime, electricity price 0.6582 yuan/kWh; when 17:00-18:00 are peaks, the electricity price is 0.7276 yuan/kWh; when 18:00-20:00 are sharp, the electricity price is 0.7573 yuan/kWh; when the peak value is 20:00-22:00, the electricity price is 0.7276 yuan/kWh; 22:00-24:00 are usual, and the electricity price is 0.6582 yuan/kWh.
The key node table generated for that month is 00:00, 10:00, 11:00, 14:00, 15:00, 17:00, 18:00, 20:00, 22:00, 24:00.
Further, the above period divisions include, but are not limited to, month, day, hour, etc., and the key nodes include, but are not limited to, whole points, minutes, etc.
S2, formulating node data acquisition rules of acquisition time, frequency and the like according to the key node table:
and an infrared measurement probe is additionally arranged at all parallel lists of the power station and a gateway table related to reverse up-network, the probe is aligned with an infrared signal output port of the intelligent electric meter, and the electric meter and the probe support GB/T17215.321-2021 DL/T645-2007 and DL/T698.45-2017 infrared communication protocols.
The other end of the probe is connected with an intelligent gateway, the gateway is powered by photovoltaic side alternating current and is provided with an Internet of things card, the gateway is in butt joint with a server through 4G cat1 wireless internet surfing, and the gateway and the server are in communication through an mqtt protocol.
Issuing a conventional data acquisition rule through a server: the collecting and reporting time interval is 5 minutes, the collecting data content is the current ammeter base number, and the current accumulated electric quantity can be obtained through ammeter multiplying power.
Node data acquisition rules are issued through a server: the master query time is 00:00:00, 10:00:00, 11:00:00, 14:00:00, 15:00:00, 17:00:00, 18:00:00, 20:00:00, 22:00:00, 24:00:00 whole second query; the standby inquiry time is 10 seconds and 20 seconds before and after the main inquiry time; the timeout time was 30 seconds and the number of reviews was 2.
The electric quantity acquisition equipment can also select 485 communication lines to communicate with the electric meter, and adopts a wired network line to communicate with the server.
S3, data processing and storage, critical node data complement and electric quantity correction:
the data acquisition and marking conditions (unit: kWh) of the grid-connected table 1, the grid-connected table 2, the grid-connected table 3 and the gateway table 1 acquired at the 10:00 key nodes are shown in the following table:
the main data of the grid-connected table 3 is automatically complemented according to the data of the parallel table 1, and the calculation process is as follows:
；
the gateway table 1 is reference data using 09:59:50 time data;
gateway table 2 lost data on the day 10:00:00 and its preparation for interrogation, but the time of day was normal for the first three days, as shown in the following table:
gateway table 2 the data calculation process on the same day is:。
when the settlement period is reached, the subsection electric quantity and the difference electric quantity of the start and end readings are shown in the following table (unit: kWh):
the error value is about 0.38%, meets the requirement of less than 0.5% agreed with the owner, and carries out electric quantity correction (unit: kWh), and the corrected electric quantity is shown in the following table:
s4, calculating theoretical electricity charge in a settlement period according to the reference data/formula:
the electricity consumption of the photovoltaic power station in the month is 120kWh at ordinary times, the electricity consumption of the photovoltaic power station in the Internet is 20000kWh, the electricity price of the local photovoltaic Internet is 0.3949 yuan/kWh, the photovoltaic discount rate agreed with owners is 90 percent, no photovoltaic patch is adopted, and the theoretical electricity fee of photovoltaic power generation in the month is calculated as follows:
（401.55*0.7573+1606.3*0.7276+24092.97*0.6582+14054.22*0.5888+23089.08*0.569）*0.9-120*0.6582+20000*0.3949≈42688.3
therefore, the theoretical electricity charge of the photovoltaic in the month is 42688.3 yuan.
S5, additional cost is calculated, supplementary record data are checked, and a photovoltaic equivalent electricity bill is generated:
additional billing items in the local monthly commercial electric bill list other than peak flat valley deep valley electric bill are as follows:
the equivalent electricity charge of the month photovoltaic power generation takes the self-powered 63244kWh electric quantity as the charging electric quantity, and the details are shown in the following table:
the equivalent photovoltaic electricity charge in the current month after the data of the supplementary record is confirmed is 42688.3+1982.25= 44670.55 yuan.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (10)
1. An automatic settlement method for industrial and commercial photovoltaic benefits is characterized by comprising the following steps:
s1, acquiring the range of the next settlement period of a photovoltaic power station and a segmentation electricity price dividing rule in the period, and generating a key node table;
s2, formulating a data acquisition rule according to the key node table, acquiring electric quantity data through a measuring device, and reporting the electric quantity data to a server;
s3, the server acquires the acquired electric quantity data, processes and stores the electric quantity data, and performs critical node data complement and electric quantity correction;
s4, calculating theoretical electric charge in a settlement period;
and S5, calculating the photovoltaic equivalent additional cost in the settlement period, checking the supplementary record data and generating a photovoltaic equivalent electric bill.
2. The method for automatically settling industrial and commercial photovoltaic revenue according to claim 1, wherein in step S1, the periodic divided electricity price division rule comprises: and dividing the electricity consumption peak, flat valley and deep valley periods in the period and the electricity price in each period, determining each key node according to the separation time points of each period, and automatically forming a key node table in the period.
3. The method for automatically settling industrial and commercial photovoltaic revenue according to claim 2, wherein in step S2, the data collection rules include regular data collection rules and node data collection rules;
a conventional data collection rule comprising: the acquisition time, the acquisition frequency and the acquisition data content of the conventional data;
a node data collection rule comprising: the main inquiry time is used for inquiring at the moment of the key node; the front and back inquiry time is provided, and inquiry is carried out for a plurality of seconds/min before the key node and after the key node; and (5) carrying out overtime review, and carrying out query again without response when the overtime is exceeded.
4. The automatic settlement method for industrial and commercial photovoltaic benefits according to claim 3, wherein the measuring device is additionally arranged in a photovoltaic power station and on a netlist and/or an industrial and commercial gateway table, and establishes communication connection with a server and intelligent ammeter equipment at a user side through a wired network or a wireless connection mode; and the server issues a query instruction according to the data acquisition rule, the measuring device receives the server instruction and then communicates with the intelligent ammeter equipment at the user side, acquires the current electric quantity data of the intelligent ammeter at the user side, and reports the current electric quantity data to the server.
5. The method for automatically settling industrial and commercial photovoltaic benefit according to claim 4, wherein in step S3, after the server obtains the electric quantity data of the smart meter, the server processes and stores the data according to the following rules:
s3.1, the data of the main query time and the backup query time are not lost, and the data are stored and marked as normal;
s3.2, the data of the main query time are normal, at least one of the data of the front and back backup query time is lost, and the data is stored and marked as the main data are normal;
s3.3, data of the main query time are lost, at least one of the data of the front and back backup query time exists, the measuring equipment is a parallel net list, automatic data complement is carried out, and the data is stored and marked as automatic data complement after automatic data complement;
s3.4, marking the loss condition of other data as data loss, performing manual supplementary recording, calculating and storing reference data of equipment to be supplementary recorded meeting the condition; for the equipment to be complemented which does not meet the condition, taking the latest data before the equipment data loss moment as reference data, and marking the latest data as similar data;
s3.5, electric quantity correction is carried out: according to the electric quantity data of each node of the intelligent electric meter, calculating sectional electric quantity data of each period in the period, and correcting the sectional electric quantity in a contracted error range when the settlement period is reached, so that the sum of the sectional electric quantities is equal to the difference between the initial electric quantity and the final electric quantity in the actual period, wherein the electric quantity correction calculation formula is as follows:
（1）
wherein,q´in order to correct the amount of the segment charge after correction,qin order to correct the amount of the segment charge before correction,Qis to be led toThe actual total power obtained by the start-end power difference in the over period,is the total power calculated from the sum of the segment powers.
6. The automatic settlement method for industrial and commercial photovoltaic benefits according to claim 5, wherein in step S3.3, the automatic complement is based on the fact that the electric quantity ratio of each grid-connected meter in the same time period is the same, that is, the condition of the photovoltaic power generation under the air is the same, and lost data is calculated through data collected normally, and the formula is as follows:
（2）
deforming it into:
（3）
wherein,na photovoltaic parallel netlist for data loss of a main query time in a power station,for electricity metersnAt the moment of timei-1、iAndi+1The measurement data of the time period is used,man electricity meter in the normal state of this critical node in the power station,for electricity metersmAt the moment of timei-1、iAndi+1Measurement data at that time.
7. The method for automatically settling industrial and commercial photovoltaic revenue according to claim 6, wherein in step S3.4, the calculation rule of the reference data in the manual complement is as follows:
the equipment to be complemented is a grid-connected table: the reference data calculation is carried out according to the formulas (2) and (3), and the selected time period is extended to 24 hours of the whole natural day of the day;
the device to be complemented is a gateway table: if the data of the front and back backup query time points are not lost, adopting the data as reference data; if the data of the front and back backup query time points are lost, based on the principle that the electricity consumption is approximately the same in the same time period when the normal continuous operation is performed in the industrial and commercial scene, the method is calculated according to the following formula (4):
（4）
wherein, Q j is the firstjAmmeter measurement reading at the moment of data loss;dto be selected as the firstjThe number of days in succession after the day without missing data, Q j-d is the firstjBefore or after the daydThe heaven corresponds to the firstjAmmeter measurement reading at the moment of data loss.
8. The method for automatically settling industrial and commercial photovoltaic revenue according to claim 7, wherein step S4, after the settlement period is reached and the automatic data complement and power correction are completed, calculates a theoretical electricity fee without manual confirmation and without additional fee consideration based on the segmented power data or the reference data as a preliminary reference for actual settlement:
theoretical electricity fee = spontaneous electricity fee + net electricity fee-electricity fee of power station + photovoltaic subsidy;
the electricity charge of the power station refers to electricity consumption of the photovoltaic power station and is obtained by metering the electricity consumption direction of a grid-connected meter;
theoretical electricity chargeThe specific formula is as follows:
（5）
wherein,、/>the power generation directions of the parallel net list and the gateway list are respectively segmented into electric quantity,pin order to segment the electricity price of electricity,ηfor the rate of the discount it is,for photovoltaic online electricity price, +.>Segmenting electric quantity for power utilization direction of grid-connected meter, < >>The electricity price is used for the photovoltaic patch,
if the electric quantity data are lost, adopting reference data at the moment;
when the power station and the business users settle accounts, the calculation of the theoretical electric charge removes the internet electric charge and the photovoltaic patch.
9. The method for automatically settling industrial and commercial photovoltaic revenue according to claim 8, wherein step S5 comprises the following sub-steps:
s5.1, collating complement data: before reaching the settlement period, setting an automatic confirmation condition for the automatically-recorded electric quantity data, wherein the automatic confirmation is carried out when the automatic confirmation condition is reached, and the manual confirmation or modification is carried out when the automatic confirmation condition is not reached, wherein the confirmed or modified electric quantity data is used for calculating the photovoltaic equivalent electric charge;
s5.2, calculating the photovoltaic equivalent additional cost: the industrial and commercial electric charges comprise conventional segmented electric charges and additional charging project electric charges, wherein the additional charging project electric charges comprise: the method comprises the steps of matching a power consumption rate, a power regulation power consumption rate, a preferred generation and preferred purchase curve with a deviation power consumption rate and a power generation side return cost, wherein the partial cost is divided by a local electric company and calculated according to the conditions of industrial and commercial power consumption, the positive and negative of the partial cost are obtained, and the corresponding power consumption rate is obtained by multiplying the charging power by the power price; after the settlement period is reached and the business electric bill is obtained, the photovoltaic equivalent additional cost can be calculated as follows:
photovoltaic equivalent additional cost = spontaneous self-use total electricity quantity x additional electricity price
The self-power-consumption total electric quantity is the total electric quantity of photovoltaic power generation used by industry and commerce, namely photovoltaic power generation capacity-photovoltaic internet power quantity, and is equal to the charging electric quantity in the electric charge of the additional charging project of industry and commerce;
s5.3, generating a photovoltaic equivalent electricity bill: photovoltaic equivalent electric chargeThe calculation formula is as follows:
（6）
wherein,for the additional electricity price, each data related to the electric quantity adopts the data after confirmation or modification.
10. An automated settlement system for industrial and commercial photovoltaic revenues for implementing the automated settlement method for industrial and commercial photovoltaic revenues according to any one of claims 1 to 9, comprising: the system comprises an electricity price configuration module, an equipment configuration module, an ammeter data module, a theoretical electricity fee module and a photovoltaic equivalent electricity fee module;
and the electricity price configuration module is used for: the method is used for manually inputting or acquiring the range of the next settlement period in the power grid official network, and distributing electricity prices in the period in a partitioned manner, and automatically forming a key node table;
and a device configuration module: the measuring device is used for configuring each ammeter, and is used for downloading a power generation amount measuring task and receiving power measurement data;
ammeter data module: the electric quantity data and the state of each ammeter at each moment are stored and displayed, and are modified or confirmed;
and an alarm module: the system is used for monitoring the data acquisition condition of the key nodes in the current period, and timely notifying a manager to check the supplementary record if a preset abnormal state occurs, wherein the abnormal state comprises a data loss state;
theoretical electric charge module: the system is used for automatically generating theoretical electricity charges in a settlement period and recalculating according to modification;
equivalent electric charge module: and when the period is over, generating a photovoltaic equivalent electric bill of the period based on the manually recorded or commercial periodic electric bill acquired in the power grid official network.
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