A power plant loss analysis system based on electricity consumption model

Abstract

The present invention provides a power plant loss analysis system based on an electricity consumption model, the analysis system comprising a line loss data collection module, a line loss data processing module and a database module; the database module is used to store the theoretical line loss value of the power plant every day; the line loss data collection module is used to obtain electricity consumption information at both the output and input ends of the line, and transmit the electricity consumption information to the line loss data processing module; the line loss data processing module comprises a theoretical line loss processing unit, an actual line loss processing unit and a comprehensive processing and analysis unit; the theoretical line loss processing unit is used to process the theoretical line loss value of the power plant every day to obtain a theoretical line loss reference value. By analyzing the theoretical line loss value and the actual line loss value in the line, the present invention can timely and accurately obtain the line loss situation of the line, thereby solving the problem that the existing line loss detection of power plant lines is not timely and accurate enough.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid detection, and in particular to a power plant loss analysis system based on an electricity consumption model. Background Art

[0002] Energy loss caused by the transmission of electrical energy through transmission lines is referred to as line loss. In addition to the power lines, power networks also contain other transmission and transformation equipment such as transformers, which also generate energy losses. The sum of these energy losses (including line loss) is called network loss. Reducing line loss, saving energy, and improving power transmission efficiency are key aspects of power sector design and operation.

[0003] In existing technologies, the detection method for energy loss in lines is relatively simple, usually only by measuring the electrical energy at the output and input ends of the line. However, since the meter itself will have a certain impact on the line loss, it is difficult to obtain the actual line loss situation through the electrical energy measurement and analysis of the meter alone. As a result, the analysis of line loss fault conditions is not accurate and timely enough. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a power plant loss analysis system based on the electricity consumption model. By analyzing the theoretical line loss value and the actual line loss value in the line, the line loss situation of the line can be obtained in a timely and accurate manner, so as to solve the problem that the line loss detection of the existing power plant lines is not timely and accurate enough.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: a power plant loss analysis system based on an electricity consumption model, the analysis system comprising a line loss data collection module, a line loss data processing module and a database module;

[0006] The database module is used to store the theoretical line loss value of the power plant every day; the database module includes a power generation parameter acquisition unit, a power generation order processing unit, a power generation equipment management unit and a theoretical power generation calculation unit, the power generation parameter management unit is used to input and update the power plant power generation parameter information, the power plant power generation parameter information reflects the power generation type and power generation specifications of the power plant, the power generation order processing unit is used to input and update the power plant order information, the power plant order information reflects the work tasks of the power plant, the power generation equipment management unit is used to input and update the power generation equipment information, the power generation equipment information reflects the power generation equipment of the power plant, the theoretical power generation calculation unit is configured with a power generation calculation strategy, the power generation calculation strategy obtains the order task of the corresponding date according to the power plant order information, and generates the corresponding working equipment group according to the order task, generates the theoretical equipment line loss according to the power generation equipment information pointed to by the working equipment group, and generates the theoretical line loss value according to the power plant power generation parameter information and the theoretical equipment line loss;

[0007] The line loss data collection module is used to obtain power consumption information at both the output and input ends of the line, and transmit the power consumption information to the line loss data processing module;

[0008] The line loss data processing module includes a theoretical line loss processing unit, an actual line loss processing unit and a comprehensive processing and analysis unit;

[0009] The theoretical line loss processing unit is used to process the daily theoretical line loss value of the power plant to obtain a theoretical line loss reference value;

[0010] The actual line loss processing unit is used to process the power consumption information collected by the line loss data collection module to obtain the actual line loss value;

[0011] The comprehensive processing and analysis unit is used to process the theoretical line loss reference value and the actual line loss value to obtain a line loss balance difference, and then perform analysis and processing based on the line loss balance difference to obtain a fault result.

[0012] Furthermore, the theoretical line loss processing unit is configured with a theoretical line loss reference processing strategy, which includes: selecting the daily theoretical line loss values ​​of the 360 ​​days before the detection day as a reference processing base group, and numbering the daily theoretical line loss values ​​in the reference processing base group from close to the detection day to far away from the detection day, and marking them as Plxr1, Plxr2, ..., Plxr360 in sequence, where Plxr1 represents the number of the daily theoretical line loss value closest to the detection day, Plxr360 represents the number of the daily theoretical line loss value farthest from the detection day, Plxr is a representative letter of the daily theoretical line loss value, and 1 to 360 correspond to the serial number of each group respectively;

[0013] The labels are divided into 12 groups according to the last digit from small to large, and 5 groups of labels are randomly selected from each group. The daily theoretical line loss values ​​corresponding to the labels are put into the theoretical line loss reference formula to calculate the theoretical line loss reference value.

[0014] Furthermore, the theoretical line loss reference formula is configured as: ; Among them, Plxc is the theoretical line loss reference value, and i represents the representative serial number of the 60 groups of daily theoretical line loss values ​​extracted.

[0015] Furthermore, the line loss data collection module includes a theoretical line loss collection unit, and the theoretical line loss collection unit includes a load current detector and a supply voltage detector. The load current detector is used to detect the load current value in the line, and the supply voltage detector is used to detect the supply voltage in the line.

[0016] The database module also stores parameter compensation values ​​of line loss equipment of the power plant.

[0017] Furthermore, the theoretical line loss processing unit is also configured with a theoretical line loss unidirectional processing strategy, which includes: obtaining several load current values ​​detected by the load current detector at every first detection time in a day, obtaining several power supply voltages detected by the power supply voltage detector at every first detection time in a day, and substituting the several load current values, several power supply voltages and parameter compensation values ​​into the theoretical line loss formula to obtain the daily theoretical line loss value.

[0018] Furthermore, the theoretical line loss formula is configured as: ; Wherein, Plxs is the theoretical line loss value of each day, If is the load current value, Vg is the supply voltage, n is the number of times the load current value or supply voltage is obtained in a day, If1 represents the first load current value obtained in a day, Ifn represents the load current value obtained for the nth time in a day, Vg1 represents the first supply voltage obtained in a day, Vgn represents the supply voltage obtained for the nth time in a day, Cbc is the parameter compensation value, a1 is the average load current compensation index, k1 is the average load current conversion coefficient, a2 is the fluctuating load current compensation index, k2 is the fluctuating load current conversion coefficient, a3 is the average supply voltage compensation index, and k3 is the average supply voltage conversion coefficient.

[0019] Furthermore, the line loss data collection module further includes an actual line loss collection unit, and the actual line loss collection unit includes a forward power detector, a reverse power detector, a voltage transformer, a current transformer, an output meter, and an input meter;

[0020] The forward power detector is used to detect the forward output power of the line, the reverse power detector is used to detect the reverse input power of the line, the voltage transformer is used to detect the voltage transformation ratio between the output end and the input end of the line, the current transformer is used to detect the current transformation ratio between the output end and the input end of the line, the output meter is used to detect the output power of the output end of the line, and the input meter is used to detect the output power of the input end of the line.

[0021] Furthermore, the actual line loss processing unit is configured with an actual line loss processing strategy, which includes: bringing the forward output power, reverse input power, voltage transformation ratio, current transformation ratio, output power of the output end, and output power of the input end into the actual line loss calculation formula to obtain the actual line loss value.

[0022] Furthermore, the actual line loss calculation formula is configured as: ; Among them, Psxs is the actual line loss value, Wz is the forward output power, Wf is the reverse input power, Vb is the voltage transformation ratio, Ib is the current transformation ratio, Esc is the output power of the output end, Esf is the output power of the input end, b1 is the power conversion ratio, b2 is the voltage conversion ratio, and b3 is the current conversion ratio.

[0023] Furthermore, it also includes a line loss model learning module (4), and the calculation formula of the line loss theoretical value is configured as: , where dac is a date reference parameter generated according to the corresponding date, bec is a power plant power generation parameter generated according to the corresponding power plant power generation parameter information, cucn is an equipment information parameter corresponding to the n-th power generation equipment, and ticn is a power generation task parameter corresponding to the n-th power generation equipment; the line loss model learning module (4) is configured with a first line loss threshold and a second line loss threshold, and when the line loss difference is greater than or equal to the first line loss threshold, the equipment information parameter and the power generation task parameter are corrected; when the line loss difference is greater than or equal to the second line loss threshold and less than the first line loss threshold, the power plant power generation parameter and the date reference parameter are corrected.

[0024] Beneficial effects of the present invention: The present invention can obtain the power consumption information at both the output and input ends of the line through the line loss data collection module, and transmit the power consumption information to the line loss data processing module. The theoretical line loss processing unit in the line loss data processing module can process the daily theoretical line loss value of the power plant to obtain the theoretical line loss reference value. The actual line loss processing unit processes the power consumption information collected by the line loss data collection module to obtain the actual line loss value. The comprehensive processing and analysis unit processes the theoretical line loss reference value and the actual line loss value to obtain the line loss balance difference, and then analyzes and processes the line loss balance difference to obtain the fault result, thereby timely and accurately obtaining the line loss situation of the line, thereby improving the timeliness and accuracy of obtaining the line loss situation of the power plant line. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 This is a system principle block diagram of the present invention;

[0027] Figure 2 This is a principle block diagram of the theoretical line loss collection unit of the present invention;

[0028] Figure 3 This is a principle block diagram of the actual line loss collection unit of the present invention;

[0029] Figure 4 This is a principle block diagram of the database module of the present invention.

[0030] In the figure: 1. Line loss data collection module; 11. Theoretical line loss collection unit; 111. Load current detector; 112. Supply voltage detector; 12. Actual line loss collection unit; 121. Forward power detector; 122. Reverse power detector; 123. Voltage transformer; 124. Current transformer; 125. Output meter; 126. Input meter; 2. Database module; 21. Electricity parameter acquisition unit; 22. Power generation order processing unit; 23. Power generation equipment management unit; 24. Theoretical power generation calculation unit; 3. Line loss data processing module; 31. Theoretical line loss processing unit; 32. Actual line loss processing unit; 33. Comprehensive processing and analysis unit; 4. Line loss model learning module. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] See also Figure 1 , a power plant loss analysis system based on an electricity consumption model, the analysis system includes a line loss data collection module 1, a line loss data processing module 3 and a database module 2.

[0033] The database module 2 is used to store the theoretical line loss value of the power plant every day; the database module 2 also stores the parameter compensation value of the line loss equipment of the power plant. The database module 2 includes a power generation parameter acquisition unit 21, a power generation order processing unit 22, a power generation equipment management unit 23 and a theoretical power generation calculation unit 24. The power generation parameter management unit 21 is used to input and update the power plant power generation parameter information, and the power plant power generation parameter information reflects the power generation type and power generation specifications of the power plant. The power generation order processing unit 22 is used to input and update the power plant order information, and the power plant order information reflects the work tasks of the power plant. The power generation equipment management unit 23 is used to input and update the power generation equipment information, and the power generation equipment information reflects the power generation equipment of the power plant. The theoretical power generation calculation unit 24 is configured with a power generation parameter acquisition unit 21, a power generation order processing unit 22, a power generation equipment management unit 23 and a theoretical power generation calculation unit 24. Calculation strategy, the power generation calculation strategy obtains the order task of the corresponding date according to the power plant order information, generates the corresponding working equipment group according to the order task, generates the theoretical equipment line loss according to the power generation equipment information pointed to by the working equipment group, and generates the theoretical line loss value according to the power generation parameter information of the power plant and the theoretical equipment line loss; first, the current power plant data is collected and updated through the database module. Since the data will be updated at any time, the database module is also required to have the function of inputting and updating information, and the line loss analysis of the power plant needs to be based on the power plant situation, and the information related to the power plant and the line loss is mainly analyzed by the power generation scale, but in the past, the power plant was divided by the power generation scale. It is difficult to obtain reliable results according to the different situations of the power plant. If the theoretical line loss value is not calculated accurately, the analysis result will lose its meaning. However, since the work tasks of the power plant units on the same day may change, the working equipment may also be different, and the working time may also be partially different, so in this case, it is necessary to update the order information in real time, and then decompose the power generation tasks according to the order information. The order information reflects the total power generation tasks of each region for the power plant. If it is decomposed into daily power generation tasks, it can correspond to the daily power generation, and then according to the task content, it can correspond to the working time and working power of each power-consuming equipment every day. , that is, the power generation equipment information of the working equipment group. The theoretical line loss value is then generated based on this power generation equipment information and the power plant's power generation parameters. Calculating this theoretical line loss value requires the following parameters: power plant power generation parameters, equipment information parameters, power generation task parameters, and date reference parameters. First, the theoretical line loss generated by the operating hours and operating power of each device on that date is calculated. These theoretical line losses are then added together to obtain the equipment's floating line loss. The fixed line loss of the power plant is then calculated based on the plant's size and type. The reliable line loss ratio is then determined based on the current date. The theoretical line loss value is obtained by adding the floating line loss to the fixed line loss and multiplying it by the line loss ratio. The power plant's power generation parameters, equipment information parameters, power generation task parameters, and date reference parameters are retrieved from the line loss model learning module.

[0034] The line loss data collection module 1 is used to obtain power usage information at both the output and input ends of the line, and transmit the power usage information to the line loss data processing module 3.

[0035] See also Figure 2 The line loss data collection module 1 includes a theoretical line loss collection unit 11, and the theoretical line loss collection unit 11 includes a load current detector 111 and a supply voltage detector 112. The load current detector 111 is used to detect the load current value in the line, and the supply voltage detector 112 is used to detect the supply voltage in the line;

[0036] Among them, the line loss increases when the load current increases, and the line loss decreases when the load current decreases. The smaller the change in load current, the smaller the line loss, and the larger the change in load current, the greater the line loss. When the power supply voltage increases, the line loss rate will decrease.

[0037] See also Figure 3 The line loss data collection module 1 further includes an actual line loss collection unit 12, which includes a forward power detector 121, a reverse power detector 122, a voltage transformer 123, a current transformer 124, an output meter 125, and an input meter 126;

[0038] The forward power detector 121 is used to detect the forward output power of the line, and the reverse power detector 122 is used to detect the reverse input power of the line. The forward output power is the useful work output by the line, and the reverse input power is the useful work transmitted to the line.

[0039] The voltage transformer 123 is used to detect the voltage transformation ratio between the output end and the input end of the line. The voltage transformer 123 (PT) is used for measurement, monitoring and protection of higher voltage levels, and its principle is equivalent to that of a transformer.

[0040] The current transformer 124 is used to detect the current transformation ratio between the output and input ends of the circuit. The current transformation ratio is the ratio between the transformed currents on both sides of the current transformer 124, that is, the ratio between the primary and secondary currents. For example, if the current changes from 5000A to 5A, the transformation ratio is 5000 / 5.

[0041] The output meter 125 is used to detect the output power of the output end of the line, and the input meter 126 is used to detect the output power of the input end of the line.

[0042] The line loss data processing module 3 includes a theoretical line loss processing unit 31, an actual line loss processing unit 32 and a comprehensive processing and analysis unit 33;

[0043] The theoretical line loss processing unit 31 is used to process the daily theoretical line loss value of the power plant to obtain a theoretical line loss reference value;

[0044] The actual line loss processing unit 32 is used to process the power consumption information collected by the line loss data collection module 1 to obtain the actual line loss value;

[0045] The comprehensive processing and analysis unit 33 is used to process the theoretical line loss reference value and the actual line loss value to obtain a line loss balance difference, and then perform analysis and processing based on the line loss balance difference to obtain a fault result.

[0046] The theoretical line loss processing unit 31 is equipped with a theoretical line loss reference processing strategy, which includes: selecting the daily theoretical line loss values ​​of the 360 ​​days before the detection day as a reference processing base group, and labeling the daily theoretical line loss values ​​in the reference processing base group from closer to the detection day to farther away from the detection day, and marking them as Plxr1, Plxr2, ..., Plxr360 in sequence, where Plxr1 represents the number of the daily theoretical line loss value closest to the detection day, Plxr360 represents the number of the daily theoretical line loss value farthest from the detection day, and Plxr is a letter representing the daily theoretical line loss value, and 1 to 360 correspond to the sequence number of each group respectively;

[0047] The labels are divided into 12 groups according to the last digit from small to large, and 5 groups of labels are randomly selected from each group. The daily theoretical line loss values ​​corresponding to the labels are put into the theoretical line loss reference formula to calculate the theoretical line loss reference value.

[0048] The theoretical line loss reference formula is configured as follows: ; Among them, Plxc is the theoretical line loss reference value, and i represents the representative serial number of the 60 groups of daily theoretical line loss values ​​extracted.

[0049] The theoretical line loss processing unit 31 is also configured with a theoretical line loss unidirectional processing strategy, which includes: obtaining a number of load current values ​​detected by the load current detector 111 at every first detection time in a day, obtaining a number of power supply voltages detected by the power supply voltage detector 112 at every first detection time in a day, and substituting the multiple load current values, multiple power supply voltages and parameter compensation values ​​into the theoretical line loss formula to obtain the daily theoretical line loss value.

[0050] The theoretical line loss formula is configured as follows: Wherein, Plxs is the theoretical line loss value per day, If is the load current value, Vg is the supply voltage, n is the number of load current values ​​or supply voltage values ​​obtained in a day, If1 represents the first load current value obtained in a day, Ifn represents the load current value obtained for the nth time in a day, Vg1 represents the first supply voltage obtained in a day, Vgn represents the supply voltage obtained for the nth time in a day, Cbc is the parameter compensation value, a1 is the average load current compensation index, k1 is the average load current conversion coefficient, a2 is the fluctuating load current compensation index, k2 is the fluctuating load current conversion coefficient, a3 is the average supply voltage compensation index, and k3 is the average supply voltage conversion coefficient. Wherein, a1, a2, a3, k1, k2, and k3 are all greater than zero.

[0051] The actual line loss processing unit 32 is configured with an actual line loss processing strategy, which includes: substituting the forward output power, reverse input power, voltage transformation ratio, current transformation ratio, output power of the output end, and output power of the input end into the actual line loss calculation formula to obtain the actual line loss value.

[0052] The actual line loss calculation formula is configured as: Where Psxs is the actual line loss, Wz is the forward output power, Wf is the reverse input power, Vb is the voltage transformation ratio, Ib is the current transformation ratio, Esc is the output power at the output end, Esf is the output power at the input end, b1 is the power conversion ratio, b2 is the voltage conversion ratio, and b3 is the current conversion ratio. b1, b2, and b3 are all greater than zero.

[0053] The comprehensive processing and analysis unit 33 is configured with a comprehensive processing and analysis strategy, which includes: subtracting the theoretical line loss reference value from the actual line loss reference value to obtain the line loss difference; the comprehensive processing and analysis unit is configured with a strategy execution library, which stores a number of execution strategies, each execution strategy corresponds to a balance value range, and the corresponding execution strategy is called according to the balance value range in which the obtained line loss balance difference falls. The corresponding execution strategy can be a reminder for maintenance, a suggestion to reduce the power generation task, or a reduction in power generation power, a suggestion for time sharing, a suggestion to reduce continuous power generation work, etc.

[0054] The line loss model learning module 4 is used to obtain and correct the power plant's power generation parameters, equipment information parameters, power generation task parameters, and date reference parameters. When the line loss difference is greater than or equal to the first line loss threshold, the equipment information parameters and power generation task parameters are corrected; when the line loss difference is greater than or equal to the second line loss threshold and less than the first line loss threshold, the power plant's power generation parameters and date reference parameters are corrected. Because if the line loss difference is too large, the equipment parameter information and power generation task parameter information are adjusted to match the theoretical value and reduce the parameter error. The same equipment can be allocated in different power plants, and the same power generation task parameters can be used in different power plants. The line loss learning module can obtain the line loss results of all power plants. For example, if the power plant where the A equipment exists has a large line loss deviation for a long time, and the deviation is still large after inspection, then there will be many correction tasks for the A equipment, so that the corresponding equipment deviation can be corrected. Similarly, the power generation task, date, power plant power generation parameters and other information can be corrected with such logic. In this way, the corresponding parameters can be continuously corrected in the big data environment so that the calculation results will deviate from the accurate value. The correction method is, for example, when the adjustment amount reaches X, the line loss difference is 0, then the actual correction adjustment amount can be 0.01 or 0.005, which will make the model continue to be accurate and ensure that it will not be affected by extreme situations. It also includes a line loss model learning module (4), and the calculation formula of the line loss theoretical value is configured as: , wherein dac is a date reference parameter generated according to the corresponding date, bec is a power plant power generation parameter generated according to the corresponding power plant power generation parameter information, cucn is an equipment information parameter corresponding to the n-th power generation equipment, and ticn is a power generation task parameter corresponding to the n-th power generation equipment; the line loss model learning module (4) is configured with a first line loss threshold and a second line loss threshold, and when the line loss difference is greater than or equal to the first line loss threshold, the equipment information parameter and the power generation task parameter are corrected; when the line loss difference is greater than or equal to the second line loss threshold and less than the first line loss threshold, the power plant power generation parameter and the date parameter are corrected.

[0055] Working principle: The parameters used to calculate the theoretical line loss reference value can be collected through the theoretical line loss collection unit 11, and the parameters used to calculate the actual line loss value can be obtained through the actual line loss collection unit 12. Then, by comparing and analyzing the calculated theoretical line loss reference value and the actual line loss value, the final line loss analysis result can be obtained, thereby improving the timeliness and accuracy of the line loss analysis of the power plant line.

[0056] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A power plant loss analysis system based on an electricity consumption model, characterized in that: The analysis system comprises a line loss data collection module (1), a line loss data processing module (3) and a database module (2); The database module (2) is used to store the theoretical line loss value of the power plant every day. The database module includes a power generation parameter acquisition unit (21), a power generation order processing unit (22), a power generation equipment management unit (23) and a theoretical power generation calculation unit (24). The power generation parameter management unit (21) is used to input and update the power plant power generation parameter information, and the power plant power generation parameter information reflects the power generation type and power generation specification of the power plant. The power generation order processing unit (22) is used to input and update the power plant order information, and the power plant order information reflects the work task of the power plant. The power generation equipment management unit (23) is used to input and update the power generation equipment information, and the power generation equipment information reflects the power generation equipment of the power plant. The theoretical power generation calculation unit (24) is configured with a power generation calculation strategy, and the power generation calculation strategy obtains the order task of the corresponding date according to the power plant order information, generates the corresponding working equipment group according to the order task, generates the theoretical equipment line loss according to the power generation equipment information pointed to by the working equipment group, and generates the theoretical line loss value according to the power plant power generation parameter information and the theoretical equipment line loss. The line loss data collection module (1) is used to obtain power usage information at both the output and input ends of the line, and transmit the power usage information to the line loss data processing module (3); The line loss data processing module (3) includes a theoretical line loss processing unit (31), an actual line loss processing unit (32) and a comprehensive processing and analysis unit (33); The theoretical line loss processing unit (31) is used to process the daily theoretical line loss value of the power plant to obtain a theoretical line loss reference value; The actual line loss processing unit (32) is used to process the power consumption information collected by the line loss data collection module (1) to obtain an actual line loss value; The comprehensive processing and analysis unit (33) is used to process the theoretical line loss reference value and the actual line loss value to obtain the line loss balance difference value. The comprehensive processing and analysis unit is configured with a strategy execution library. The strategy execution library stores a plurality of execution strategies. Each execution strategy corresponds to a balance value range. The corresponding execution strategy is called according to the balance value range into which the obtained line loss balance difference value falls. The theoretical line loss processing unit (31) is equipped with a theoretical line loss reference processing strategy, which includes: selecting the daily theoretical line loss values ​​of 360 days before the detection day as a reference processing base group, and marking the daily theoretical line loss values ​​in the reference processing base group from close to the detection day to far away from the detection day, and marking them as Plxr1, Plxr2, ..., Plxr360 in sequence, Plxr1 represents the number of the daily theoretical line loss value closest to the detection day, Plxr360 represents the number of the daily theoretical line loss value farthest from the detection day, Plxr is a representative letter of the daily theoretical line loss value, and 1 to 360 correspond to the serial number of each group respectively; Divide the labels into 12 groups according to the last digit from small to large, randomly select 5 groups of labels from each group, and substitute the daily theoretical line loss values ​​corresponding to the labels into the theoretical line loss reference formula to calculate the theoretical line loss reference value; The theoretical line loss reference formula is configured as follows: ; Wherein, Plxc is the theoretical line loss reference value, and i represents the representative serial number of the 60 groups of daily theoretical line loss values ​​extracted; The line loss data collection module (1) comprises a theoretical line loss collection unit (11), the theoretical line loss collection unit (11) comprising a load current detector (111) and a power supply voltage detector (112), the load current detector (111) being used to detect the load current value in the line, and the power supply voltage detector (112) being used to detect the power supply voltage in the line; The database module (2) also stores parameter compensation values ​​of line loss equipment of the power plant; The theoretical line loss processing unit (31) is further configured with a theoretical line loss one-way processing strategy, the theoretical line loss one-way processing strategy comprising: obtaining a plurality of load current values ​​detected by a load current detector (111) at every first detection time in a day, obtaining a plurality of supply voltages detected by a supply voltage detector (112) at every first detection time in a day, and bringing the plurality of load current values, the plurality of supply voltages, and the parameter compensation value into a theoretical line loss formula to obtain a daily theoretical line loss value; The theoretical line loss formula is configured as follows: ; Wherein, Plxs is the theoretical line loss value of each day, If is the load current value, Vg is the supply voltage, n is the number of times the load current value or supply voltage is obtained in a day, If1 represents the first load current value obtained in a day, Ifn represents the load current value obtained for the nth time in a day, Vg1 represents the first supply voltage obtained in a day, Vgn represents the supply voltage obtained for the nth time in a day, Cbc is the parameter compensation value, a1 is the average load current compensation index, k1 is the average load current conversion coefficient, a2 is the fluctuating load current compensation index, k2 is the fluctuating load current conversion coefficient, a3 is the average supply voltage compensation index, and k3 is the average supply voltage conversion coefficient.

2. A power plant loss analysis system based on an electricity consumption model according to claim 1, characterized in that: The line loss data collection module (1) further comprises an actual line loss collection unit (12), wherein the actual line loss collection unit (12) comprises a forward power detector (121), a reverse power detector (122), a voltage transformer (123), a current transformer (124), an output meter (125), and an input meter (126); The forward power detector (121) is used to detect the forward output power of the line, the reverse power detector (122) is used to detect the reverse input power of the line, the voltage transformer (123) is used to detect the voltage transformation ratio between the output end and the input end of the line, the current transformer (124) is used to detect the current transformation ratio between the output end and the input end of the line, the output meter (125) is used to detect the output power of the output end of the line, and the input meter (126) is used to detect the output power of the input end of the line.

3. The power plant loss analysis system based on the power consumption model according to claim 2 is characterized in that: The actual line loss processing unit (32) is configured with an actual line loss processing strategy, which includes: bringing forward output power, reverse input power, voltage transformation ratio, current transformation ratio, output power of the output end, and output power of the input end into an actual line loss calculation formula to obtain an actual line loss value.

4. A power plant loss analysis system based on an electricity consumption model according to claim 3, characterized in that: The actual line loss calculation formula is configured as: ; Among them, Psxs is the actual line loss value, Wz is the forward output power, Wf is the reverse input power, Vb is the voltage transformation ratio, Ib is the current transformation ratio, Esc is the output power of the output end, Esf is the output power of the input end, b1 is the power conversion ratio, b2 is the voltage conversion ratio, and b3 is the current conversion ratio.

5. The power plant loss analysis system based on the power consumption model according to claim 1 is characterized in that: It also includes a line loss model learning module (4), and the calculation formula of the line loss theoretical value is configured as: , wherein dac is a date reference parameter generated according to the corresponding date, bec is a power plant power generation parameter generated according to the corresponding power plant power generation parameter information, cucn is an equipment information parameter corresponding to the n-th power generation equipment, and ticn is a power generation task parameter corresponding to the n-th power generation equipment; the line loss model learning module (4) is configured with a first line loss threshold and a second line loss threshold, and when the line loss difference is greater than or equal to the first line loss threshold, the equipment information parameter and the power generation task parameter are corrected; when the line loss difference is greater than or equal to the second line loss threshold and less than the first line loss threshold, the power plant power generation parameter and the date reference parameter are corrected.

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