Platform area power grid line loss analysis platform, power loss analysis method, equipment and medium

Abstract

The invention discloses a transformer area power grid line loss analysis platform, an electric loss analysis method, equipment and a medium, and relates to the technical field of transformer area power grid management. The platform comprises a region management module and a line loss analysis module. The area management module is used for dividing the transformer area into a plurality of monitoring areas according to a main line arranged in the transformer area and a plurality of branch lines corresponding to the main line, each monitoring area comprises a part of the main line and a target branch line, and the target branch line is a branch line connected with the part of the main line; collecting electrical data of a part of main lines and target branch lines in each monitoring area; the line loss analysis module is used for determining a target line loss rate corresponding to each monitoring area based on the electrical data for each monitoring area; the target line loss rate comprises the line loss rate of part of the main line and the line loss rate of the target branch line. According to the platform, the influence of the main line and the plurality of branch lines in the transformer area on the line loss rate is fully considered, and the accurate calculation of the line loss rates of different lines in different monitoring areas in the transformer area is realized.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of power grid management in a substation area, and in particular to a power grid line loss analysis platform, power loss analysis method, equipment and medium in a substation area. Background Art

[0002] The line loss rate refers to the percentage of electric energy lost in the power network to the electric energy supplied to the power network. The line loss rate is used to assess the economic efficiency of the power system operation. For the substation power grid lines, as electricity consumption continues, the line resistance will increase. At this time, the line loss rate will continue to grow.

[0003] In the related art, the line loss rate of the substation is calculated by collecting the output load of the substation and combining all the power loads under the substation to calculate the total line loss rate of the substation. However, the calculation result of the line loss rate is low in accuracy and poor in reliability.

[0004] Therefore, how to improve the calculation accuracy of the line loss rate in the substation area is an urgent problem to be solved. Summary of the invention

[0005] The present application provides a power grid line loss analysis platform, power loss analysis method, equipment and medium for a substation area, thereby improving the calculation accuracy of the substation area line loss rate.

[0006] In a first aspect, an embodiment of the present application provides a regional power grid line loss analysis platform, the platform comprising a regional management module and a line loss analysis module; wherein:

[0007] The regional management module is used to divide the substation area into multiple monitoring areas according to the main lines arranged in the substation area and the multiple branch lines corresponding to the main lines, each monitoring area includes a part of the main line and a target branch line, and the target branch line is a branch line connected to the part of the main line;

[0008] Collecting electrical data of the part of the main line and the target branch line in each of the monitoring areas;

[0009] The line loss analysis module is used to determine, for each monitoring area, a target line loss rate corresponding to the monitoring area based on the electrical data; the target line loss rate includes the line loss rate of the part of the main line and the line loss rate of the target branch line.

[0010] Optionally, the area management module includes an area division unit;

[0011] The substation division unit is used to determine the starting point of the part of the main line, the first monitoring point of the part of the main line and the second monitoring point of the target branch line in each monitoring area according to the main line and the multiple branch lines corresponding to the main line arranged in the substation area;

[0012] Determine a boundary range of the monitoring area based on the starting point, the first monitoring point, the second monitoring point and the end of the target branch line;

[0013] Based on each of the boundary ranges, dividing the station area into a plurality of monitoring areas;

[0014] in:

[0015] For each monitoring area, the first monitoring point is located at the connection between the part of the main line and the target branch line, and the second monitoring point is located at one end of the target branch line close to the part of the main line;

[0016] For the first monitoring area, the starting point is the output end of the transformer arranged in the substation, and for the remaining monitoring areas except the first monitoring area, the starting point is the first monitoring point of the adjacent monitoring area close to the output end.

[0017] Optionally, the electrical data includes the output power of the part of the main lines in the monitoring area, the output power and power consumption of the target branch line; monitors are arranged at the output end of the transformer, the first monitoring point and the second monitoring point; at least one smart meter is arranged at the end of the target branch line;

[0018] The area management module also includes a monitoring unit;

[0019] The monitoring unit is electrically connected to each of the monitors and the smart meters in each monitoring area, and is used to call each of the monitors to monitor the output power of the part of the main line and the output power of the target branch line, and call each of the smart meters to collect the power consumption at the end of the target branch line.

[0020] Optionally, the line loss analysis module includes a line loss calculation unit;

[0021] The line loss calculation unit is used to calculate the line loss rate of the part of the main line based on the output power of the part of the main line in the current monitoring area and the output power of the part of the main line in the next monitoring area adjacent to the current monitoring area;

[0022] Calculating the line loss rate of the target branch line based on the output power and the power consumption of the target branch line in the current monitoring area;

[0023] The line loss rate of the main line is calculated by the following formula (1):

[0024]

[0025] The line loss rate of the target branch line is calculated by the following formula (2):

[0026]

[0027] Among them, L a Indicates the line loss rate of the main line, L G Indicates the output power of the part of the main line in the current monitoring area, L M Indicates the output power of the part of the main line in the latter monitoring area; L c represents the line loss rate of the target branch line, L G1 represents the output power of the target branch line in the current monitoring area, L M1 Indicates the power consumption.

[0028] Optionally, the area management module further includes: an initial data calculation unit;

[0029] The initial data calculation unit is used to determine, for each monitoring area, the initial line loss rate of the part of the main line based on the laying length and cable model of the part of the main line; and determine the initial line loss rate of the target branch line based on the laying length and cable model of the target branch line.

[0030] Optionally, the platform further includes:

[0031] The interference analysis module is used to analyze the interference degree of the ambient temperature of each monitoring area on the change of the target line loss rate, and obtain the interference result and the reference line loss change rate;

[0032] The line loss analysis module is further used to:

[0033] For any monitoring area, based on the target line loss rate at the current moment, the target line loss rate at the previous moment, the ambient temperature, the interference result and the reference line loss change rate, determine whether the change of the target line loss rate at the current moment is normal.

[0034] Optionally, the interference analysis module includes a long-term analysis unit and a data reference unit; the line loss analysis module also includes a change analysis unit and a temperature interference analysis unit;

[0035] in:

[0036] The long-term analysis unit is used to obtain, for each monitoring area, the ambient temperature of the monitoring area at multiple adjacent target moments when the output power of the monitoring area is within a preset error range; and analyze the change of the target line loss rate at each target moment according to the ambient temperature to obtain the interference result;

[0037] The change analysis unit is used to calculate the difference between the target line loss rate at the current moment and the target line loss rate at the previous moment in the monitoring area to obtain an actual line loss change rate;

[0038] The temperature interference analysis unit is used to obtain the ambient temperature of the monitoring area at the current moment and the ambient temperature at the previous moment;

[0039] The data reference unit is used to determine the reference line loss change rate based on the ambient temperature at the current moment, the ambient temperature at the previous moment and the interference result;

[0040] The temperature interference analysis unit is further used to: calculate a target difference between the actual line loss change rate and the reference line loss change rate; when the target difference is within a preset change error range, determine that the change of the target line loss rate at the current moment is normal; when the target difference is not within the preset change error range, determine that the change of the target line loss rate at the current moment is abnormal.

[0041] In a second aspect, an embodiment of the present application further provides a method for analyzing line loss in a power grid in a substation area, and the method is applied to the power grid line loss analysis platform in a substation area as described in the first aspect above; the method comprises:

[0042] According to the main lines arranged in the substation area and the multiple branch lines corresponding to the main lines, the substation area is divided into multiple monitoring areas, each monitoring area includes a part of the main line and a target branch line, and the target branch line is a branch line connected to the part of the main line;

[0043] Collecting electrical data of the part of the main line and the target branch line in each of the monitoring areas;

[0044] For each monitoring area, a target line loss rate corresponding to the monitoring area is determined based on the electrical data; the target line loss rate includes the line loss rate of the part of the main line and the line loss rate of the target branch line.

[0045] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0046] one or more processors;

[0047] a memory for storing one or more programs,

[0048] When the one or more programs are executed by the one or more processors, the one or more processors implement the substation power grid line loss analysis method described in any embodiment of the present application.

[0049] In a fourth aspect, an embodiment of the present application provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the method for analyzing line losses in a substation power grid as described in any embodiment of the present application is implemented.

[0050] The embodiment of the present application proposes a substation power grid line loss analysis platform, power loss analysis method, equipment and medium, the platform includes a regional management module and a line loss analysis module; wherein: the regional management module is used to divide the substation into multiple monitoring areas according to the main lines laid out in the substation and multiple branch lines corresponding to the main lines, each monitoring area includes part of the main line and the target branch line, the target branch line is a branch line connected to the part of the main line; the electrical data of the part of the main line and the target branch line in each monitoring area are collected; the line loss analysis module is used to determine the target line loss rate corresponding to the monitoring area based on the electrical data for each monitoring area; the target line loss rate includes the line loss rate of the part of the main line and the line loss rate of the target branch line. That is to say, in the technical solution of the present application, the influence of the main line and multiple branch lines in the substation on the line loss rate is fully considered, and the regional management module is used to finely divide the substation into multiple monitoring areas. For each monitoring area, the line loss analysis module is used to calculate the line loss rate of some main lines in the monitoring area and the line loss rate of the target branch line based on the electrical data of some main lines and the electrical data of the target branch line, respectively, so as to achieve accurate calculation of the line loss rate of different lines (i.e., some main lines and target branch lines) in different monitoring areas in the substation, thereby providing reliable reference data for the operation and maintenance management of the substation lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic diagram of the structure of a power grid line loss analysis platform for a substation area provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of the structure of a power grid line loss analysis platform for a substation area provided in another embodiment of the present application;

[0053] Figure 3 A schematic diagram of the distribution of each monitoring area in a station area provided in an embodiment of the present application;

[0054] Figure 4 A schematic diagram of a flow chart of a method for analyzing line loss in a power grid in an area provided in an embodiment of the present application;

[0055] Figure 5 A schematic diagram of a flow chart of a method for analyzing line loss in a power grid in an area provided by another embodiment of the present application;

[0056] Figure 6 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0057] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application, rather than all structures, are shown in the accompanying drawings.

[0058] In order to facilitate a clearer understanding of the embodiments of the present application, some relevant knowledge is first introduced as follows.

[0059] In the power system, a substation refers to the power supply range or area of ​​a transformer. In related technologies, the line loss rate of a substation is calculated by collecting the output load of the substation and combining it with all the power loads under the substation to calculate the total line loss rate of the substation. However, the reliability of the calculation result of this line loss rate is poor, that is, the substation line is divided into main lines and branch lines, and the cable models used in the two are not the same, and the loss load of the substation line is easily affected by the ambient temperature, resulting in poor reference of the conventionally calculated line loss rate, which cannot provide reliable data support for the operation and maintenance management of the substation power grid.

[0060] Based on the above-mentioned problems, the embodiments of the present application provide a substation power grid line loss analysis platform, power loss analysis method, equipment and medium, which are intended to improve the calculation accuracy of the substation line loss rate, and thus provide reliable reference data for the operation and maintenance management of the substation lines.

[0061] Figure 1 This is a schematic diagram of the structure of a regional power grid line loss analysis platform provided in an embodiment of the present application. The regional power grid line loss analysis platform includes a regional management module and a line loss analysis module; wherein:

[0062] The regional management module is used to divide the substation area into multiple monitoring areas according to the main lines and multiple branch lines corresponding to the main lines laid in the substation area. Each monitoring area includes part of the main line and the target branch line. The target branch line is a branch line connected to part of the main line.

[0063] Collect electrical data of some main lines and target branch lines in each monitoring area.

[0064] In the embodiment of the present application, it is fully considered that the substation is divided into main lines and branch lines, and the cable models, output power and other parameters of the two types of lines are different. Therefore, in order to more accurately calculate the line loss rate of the substation, it is necessary to use the regional management module to accurately divide the substation, that is, the regional management module divides the substation into several monitoring areas, each of which includes part of the main line and the target branch line connected to the part of the main line.

[0065] After the substation area is divided into several monitoring areas, for each monitoring area, electrical data of a part of the main line and electrical data of the target branch line in the monitoring area are collected.

[0066] In some embodiments of the present application, the electrical data may be the output power of some main lines in the monitoring area, the power consumption of the target branch line, etc. By collecting the electrical data of some main lines and target branch lines in the monitoring area, reliable data support is provided for the subsequent accurate calculation of the target line loss rate of the monitoring area.

[0067] The line loss analysis module is used to determine the target line loss rate corresponding to each monitoring area based on electrical data; the target line loss rate includes the line loss rate of some main lines and the line loss rate of target branch lines.

[0068] In the embodiment of the present application, in addition to the fact that the main line and the branch line may affect the line loss rate of the substation, it is also considered that the target line loss rate corresponding to each monitoring area in the substation may also be different.

[0069] Therefore, after finely dividing the substation area, it is necessary to use the line loss analysis module to calculate the target line loss rate for each monitoring area respectively, that is, to calculate the line loss rate of some main lines in each monitoring area and the line loss rate of the target branch line, thereby realizing the fine calculation of the line loss rate of the substation area.

[0070] The substation power grid line loss analysis platform proposed in the embodiment of the present application fully considers the impact of the main line and multiple branch lines in the substation on the line loss rate, and uses the regional management module to finely divide the substation into multiple monitoring areas. For each monitoring area, the line loss analysis module is used to calculate the line loss rate of some main lines in the monitoring area and the line loss rate of the target branch line based on the electrical data of some main lines and the electrical data of the target branch line, respectively, thereby realizing accurate calculation of the line loss rate of different lines (i.e., some main lines and target branch lines) in different monitoring areas in the substation, thereby providing reliable reference data for the operation and maintenance management of the substation lines.

[0071] Figure 2 This is a schematic diagram of the structure of a regional power grid line loss analysis platform provided by another embodiment of the present application. The regional power grid line loss analysis platform is described in the above Figure 1 Based on the shown substation power grid line loss analysis platform, the regional management module includes a substation division unit.

[0072] The area division unit is used to determine the starting point of part of the main line, the first monitoring point of part of the main line and the second monitoring point of the target branch line in each monitoring area according to the main line and multiple branch lines corresponding to the main line arranged in the area;

[0073] Determine the boundary range of the monitoring area based on the starting point, the first monitoring point, the second monitoring point and the end of the target branch line;

[0074] Based on the boundary ranges, the station area is divided into multiple monitoring areas;

[0075] in:

[0076] For each monitoring area, the first monitoring point is located at the connection between the partial main line and the target branch line, and the second monitoring point is located at one end of the target branch line close to the partial main line;

[0077] For the first monitoring area, the starting point is the output end of the transformer deployed in the substation. For the remaining monitoring areas except the first monitoring area, the starting point is the first monitoring point of the adjacent monitoring area close to the output end.

[0078] Figure 3 This is a schematic diagram of the distribution of each monitoring area in the station area provided in an embodiment of the present application. Figure 3 As shown in the figure, the dotted lines represent the boundary range of each monitoring area, the thick lines represent the main lines, and the thin lines represent the branch lines. In each monitoring area, there is a part of the main line and a branch line (i.e., the target branch line), among which, the first monitoring area of ​​the substation uses the transformer output end as the starting end of the part of the main line of the monitoring area (i.e., the starting point of the substation).

[0079] For any monitoring area, the connection between the partial main line and the target branch line (i.e. the first monitoring point, also known as the main line monitoring point) is used as the starting end of the next adjacent monitoring area (i.e. the first monitoring point), and the end of the target branch line in the monitoring area close to the partial main line is used as the branch starting end (i.e. the second monitoring point, also known as the branch line monitoring point / collection point).

[0080] Through the above embodiment, the substation is divided into multiple monitoring areas, and the first monitoring point and the second monitoring point are arranged in the monitoring area, so that the electrical data of part of the main line and the target branch line in each monitoring area can be accurately collected at the above monitoring points, providing reliable data support for the subsequent calculation of the target line loss rate of each monitoring area.

[0081] In some embodiments of the present application, the electrical data includes the output power of some main lines in the monitoring area, the output power of the target branch line, and the power consumption.

[0082] Monitors are arranged at the output end of the transformer, the first monitoring point and the second monitoring point; and at least one smart meter is arranged at the end of the target branch line.

[0083] In practical applications, the monitor is used to monitor the output power of the monitoring area, including the output power of some main lines in the monitoring area and the output power of the target branch line. There are many types of monitors, including but not limited to current sensors, voltage sensors, capacitance sensors, resistance sensors, etc.

[0084] Figure above Figure 2 As shown, the area management module also includes a monitoring unit;

[0085] The monitoring unit is electrically connected to each monitor and each smart meter in each monitoring area, and is used to call each monitor to monitor the output power of part of the main line and the output power of the target branch line, and call each smart meter to collect the power consumption at the end of the target branch line.

[0086] In the above embodiment, the monitoring unit is electrically connected to each monitor and each smart meter in each monitoring area, so that the monitoring unit can call the monitors located at the output end of the transformer, the first monitoring point and the second monitoring point in real time to monitor the output power of part of the main line and the output power of the target branch line, and call multiple smart meters located at the end of the target branch line to collect the power consumption at the end of the target branch line, thereby obtaining the electrical data of part of the main line and the target branch line in the monitoring area, and realizing real-time monitoring of the electrical data of the monitoring area.

[0087] After the substation power grid line loss analysis platform collects the electrical data of some main lines and target branch lines in each monitoring area, it is necessary to use the line loss analysis module to calculate the target line loss rate corresponding to each monitoring area.

[0088] As mentioned above Figure 2 As shown, in some embodiments of the present application, the line loss analysis module includes a line loss calculation unit;

[0089] A line loss calculation unit, used to calculate the line loss rate of part of the main line based on the output power of part of the main line in the current monitoring area and the output power of part of the main line in the next monitoring area adjacent to the current monitoring area;

[0090] Based on the output power and power consumption of the target branch line in the current monitoring area, the line loss rate of the target branch line is calculated;

[0091] The line loss rate of some main lines is calculated by the following formula (1):

[0092]

[0093] The line loss rate of the target branch line is calculated by the following formula (2):

[0094]

[0095] Among them, L a Indicates the line loss rate of part of the main line, L G Indicates the output power of some main lines in the current monitoring area, L M Indicates the output power of part of the main line in the next monitoring area; L c Indicates the line loss rate of the target branch line, L G1 Indicates the output power of the target branch line in the current monitoring area, L M1 Indicates power consumption;

[0096] It should be noted that the power consumption of the target branch line is the sum of the power consumption collected by each smart meter at the end of the target branch line.

[0097] Furthermore, the target line loss rate of the next monitoring area adjacent to the current monitoring area is calculated by the following formulas (3)-(4):

[0098]

[0099] The line loss rate of the target branch line is calculated by the following formula (2):

[0100]

[0101] Among them, L a1 Indicates the line loss rate of some main lines in the next monitoring area, L M Indicates the output power of part of the main line in the next monitoring area; L Mm Indicates the output power of part of the main line of the next monitoring area corresponding to the next monitoring area;

[0102] L c1 Indicates the line loss rate of the target branch line in the next monitoring area, L G2 Indicates the output power of the target branch line in the next monitoring area, L M2 Indicates the power consumption of the target branch line in the next monitoring area.

[0103] Through the above implementation, after the substation area is finely divided, the line loss calculation unit is used to accurately calculate the line loss rates of different lines in different monitoring areas in the substation area, providing reliable reference data for the operation and maintenance management of the substation area lines.

[0104] As mentioned above Figure 2 As shown, in some embodiments of the present application, the area management module further includes: an initial data calculation unit;

[0105] The initial data calculation unit is used to determine the initial line loss rate of part of the main line based on the laying length and cable model of the part of the main line for each monitoring area; and determine the initial line loss rate of the target branch line based on the laying length and cable model of the target branch line.

[0106] In an embodiment of the present application, after determining the initial line loss rate of some main lines in the monitoring area and the initial line loss rate of the target branch line, the line loss analysis module uses the calculation result of the above initial line loss rate as the initial line loss rate of the monitoring area, and then calculates the target line loss rate of the monitoring area at the corresponding calculation time by collecting the input power and power consumption of the monitoring area.

[0107] As mentioned above Figure 2As shown, in some embodiments of the present application, the area power grid line loss analysis platform also includes:

[0108] The interference analysis module is used to analyze the interference degree of the ambient temperature of each monitoring area on the change of the target line loss rate, and obtain the interference result and the reference line loss change rate;

[0109] The line loss analysis module is further used for:

[0110] For any monitoring area, based on the target line loss rate at the current moment, the target line loss rate at the previous moment, the ambient temperature, the interference result and the reference line loss change rate, determine whether the change of the target line loss rate at the current moment is normal.

[0111] In the embodiment of the present application, the interference analysis module is used to analyze the influence of line loss rate change on the individual monitoring area in combination with the ambient temperature. The line loss analysis module is used to determine whether the line loss rate is normal based on the comparison result of the actual line loss change rate and the reference line loss change rate.

[0112] Through the above method, the influence of the ambient temperature in the monitoring area on the target line loss rate is fully considered. By combining the ambient temperature information, the influence relationship between the line loss change rate and the ambient temperature in the monitoring area is analyzed when the output power is close. After obtaining the measured line loss change rate, it is possible to judge whether the line loss rate in the monitoring area is normal, providing reliable data support for the line operation and maintenance management of the monitoring area.

[0113] Furthermore, the interference analysis module includes a long-term analysis unit and a data reference unit; the line loss analysis module also includes a change analysis unit and a temperature interference analysis unit.

[0114] in:

[0115] The long-term analysis unit is used to obtain the ambient temperature of the monitoring area at multiple adjacent target moments for each monitoring area when the output power of the monitoring area is within a preset error range; analyze the change of the target line loss rate at each target moment according to the ambient temperature to obtain the interference result.

[0116] In the embodiment of the present application, the output power of the monitoring area is the output power of part of the main line and the output power of the target branch line.

[0117] The long-term analysis unit obtains the ambient temperature of a separate monitoring area at several adjacent target moments when the output power is within a preset error range. At these target moments, based on the change in the target line loss rate under different ambient temperature data, the interference result of the ambient temperature of the monitoring area on the target line loss rate can be determined.

[0118] Among them, the change of the target line loss rate at each target time is analyzed according to the ambient temperature, which can be specifically achieved by the following formula (5):

[0119] L=β 0 +β 1 T+ε (5)

[0120] Where L represents the target line loss rate, β 0 and β 1 represents the intercept term, T represents the ambient temperature, and ε represents the error term.

[0121] The change analysis unit is used to calculate the difference between the target line loss rate of the monitoring area at the current moment and the target line loss rate at the previous moment, and obtain the actual line loss change rate.

[0122] Specifically, after obtaining the interference result of the ambient temperature on the target line loss rate, it is necessary to calculate the actual line loss change rate corresponding to the monitoring area.

[0123] That is, the change analysis unit calculates the difference between the target line loss rate at the current moment and the target line loss rate at the moment before the current calculation day to obtain the actual line loss change rate; wherein the output power at the two calculation moments is within a preset error range value.

[0124] The temperature interference analysis unit is used to obtain the ambient temperature of the monitoring area at the current moment and the ambient temperature at the previous moment.

[0125] The data reference unit is used to determine the reference line loss change rate based on the ambient temperature at the current moment, the ambient temperature at the previous moment and the interference result.

[0126] In an embodiment of the present application, the data reference unit is used to judge the line loss rate change threshold at the target time based on the ambient temperature at the monitoring time and the interference result of the ambient temperature of the monitoring area on the line loss rate, and then determine the reference line loss change rate.

[0127] In practical applications, the reference line loss change rate is determined based on the current ambient temperature, the previous ambient temperature and the interference result, and is calculated using the following formula (6):

[0128] L b =β 1 ·(T 2 -T 1 ) (6)

[0129] Among them, L b Indicates T 1 To T 2 The reference line loss change rate at the moment.

[0130] The temperature interference analysis unit is further used to: calculate the target difference between the actual line loss change rate and the reference line loss change rate; when the target difference is within the preset change error range, determine that the change of the target line loss rate at the current moment is normal; when the target difference is not within the preset change error range, determine that the change of the target line loss rate at the current moment is abnormal.

[0131] Through the above implementation, the influence of ambient temperature on the change of target line loss rate is fully considered, and the target line loss rate is calculated by collecting data when the output power is similar, which provides further reliable guarantee for the accuracy of line loss rate calculation in the monitoring area.

[0132] Figure 4 A schematic diagram of a flow chart of a method for analyzing line loss in a power grid in an area provided in an embodiment of the present application. The method can be performed by the above Figure 1 or Figure 2 The grid line loss analysis platform or electronic device shown in the figure can be implemented by software and / or hardware, and the platform or electronic device can be integrated in any intelligent device with network communication function. Figure 4 As shown, the method for analyzing line loss of the power grid in the substation area may include the following steps:

[0133] S401. Divide the substation into multiple monitoring areas according to the main lines and multiple branch lines corresponding to the main lines arranged in the substation area. Each monitoring area includes part of the main line and a target branch line. The target branch line is a branch line connected to part of the main line.

[0134] S402. Collect electrical data of some main lines and target branch lines in each monitoring area.

[0135] S403. For each monitoring area, determine a target line loss rate corresponding to the monitoring area based on electrical data; the target line loss rate includes a line loss rate of part of the main line and a line loss rate of the target branch line.

[0136] The substation power grid line loss analysis method proposed in the embodiment of the present application fully considers the influence of the main line and multiple branch lines in the substation on the line loss rate, and divides the substation into multiple monitoring areas. For each monitoring area, based on the electrical data of part of the main line and the electrical data of the target branch line, the line loss rate of part of the main line and the line loss rate of the target branch line in the monitoring area are calculated respectively, thereby realizing accurate calculation of the line loss rate of different lines (i.e., part of the main line and the target branch line) in different monitoring areas in the substation, thereby providing reliable reference data for the operation and maintenance management of the substation lines.

[0137] Optionally, the substation area is divided into multiple monitoring areas according to the main line arranged in the substation area and multiple branch lines corresponding to the main line, which can be specifically achieved by the following steps:

[0138] Step 1), according to the main line and multiple branch lines corresponding to the main line arranged in the substation area, determine the starting point of part of the main line in each monitoring area, the first monitoring point of part of the main line and the second monitoring point of the target branch line;

[0139] Step 2), based on the starting point, the first monitoring point, the second monitoring point and the end of the target branch line, determine the boundary range of the monitoring area;

[0140] Step 3), based on each boundary range, divide the station area into multiple monitoring areas;

[0141] in:

[0142] For each monitoring area, the first monitoring point is located at the connection between the partial main line and the target branch line, and the second monitoring point is located at one end of the target branch line close to the partial main line;

[0143] For the first monitoring area, the starting point is the output end of the transformer deployed in the substation. For the remaining monitoring areas except the first monitoring area, the starting point is the first monitoring point of the adjacent monitoring area close to the output end.

[0144] Optionally, the electrical data includes the output power of some main lines in the monitoring area, the output power of the target branch line and the power consumption; monitors are arranged at the output end of the transformer, the first monitoring point and the second monitoring point; at least one smart meter is arranged at the end of the target branch line;

[0145] Collect electrical data of some main lines and target branch lines in each monitoring area, which is specifically achieved through the following steps:

[0146] Each monitor is called to monitor the output power of part of the main line and the output power of the target branch line, and each smart meter is called to collect the power consumption at the end of the target branch line.

[0147] Optionally, determining a target line loss rate corresponding to a monitoring area based on electrical data may be specifically achieved by the following steps:

[0148] Step 1), based on the output power of part of the main line in the current monitoring area and the output power of part of the main line in the next monitoring area adjacent to the current monitoring area, calculate the line loss rate of part of the main line;

[0149] Step 2), based on the output power and power consumption of the target branch line in the current monitoring area, calculate the line loss rate of the target branch line;

[0150] The line loss rate of some main lines is calculated by the following formula (1):

[0151]

[0152] The line loss rate of the target branch line is calculated by the following formula (2):

[0153]

[0154] Among them, L a Indicates the line loss rate of part of the main line, L G Indicates the output power of some main lines in the current monitoring area, L M Indicates the output power of part of the main line in the next monitoring area; L c Indicates the line loss rate of the target branch line, L G1 Indicates the output power of the target branch line in the current monitoring area, L M1 Indicates power consumption.

[0155] Optionally, the method for analyzing line losses of a power grid in an area further includes:

[0156] For each monitoring area, the initial line loss rate of part of the main line is determined based on the laying length and cable model of the part of the main line; the initial line loss rate of the target branch line is determined based on the laying length and cable model of the target branch line.

[0157] Optionally, the method for analyzing line losses of a power grid in a substation area further includes:

[0158] For each monitoring area, analyze the interference degree of the ambient temperature of the monitoring area on the change of the target line loss rate, and obtain the interference result and the reference line loss change rate;

[0159] For any monitoring area, based on the target line loss rate at the current moment, the target line loss rate at the previous moment, the ambient temperature, the interference result and the reference line loss change rate, determine whether the change of the target line loss rate at the current moment is normal.

[0160] Optionally, for each monitoring area, the interference degree of the ambient temperature of the monitoring area on the change of the target line loss rate is analyzed to obtain the interference result and the reference line loss change rate, which is specifically achieved by the following steps:

[0161] Step 1), for each monitoring area, when the output power of the monitoring area is within a preset error range, obtain the ambient temperature of the monitoring area at multiple adjacent target moments; analyze the change of the target line loss rate at each target moment according to the ambient temperature to obtain the interference result;

[0162] Step 2) obtaining the ambient temperature of the monitoring area at the current moment and the ambient temperature at the previous moment;

[0163] Step 3) Based on the ambient temperature at the current moment, the ambient temperature at the previous moment and the interference result, determine the reference line loss change rate.

[0164] Optionally, determining whether the change of the target line loss rate at the current moment is normal is specifically achieved by the following steps:

[0165] Step 1), calculating the difference between the target line loss rate at the current moment and the target line loss rate at the previous moment in the monitoring area, and obtaining the actual line loss change rate;

[0166] Step 2) calculate the target difference between the actual line loss change rate and the reference line loss change rate; when the target difference is within the preset change error range, determine that the change of the target line loss rate at the current moment is normal; when the target difference is not within the preset change error range, determine that the change of the target line loss rate at the current moment is abnormal.

[0167] Figure 5 A flow chart of a method for analyzing line loss of a power grid in a substation area provided in another embodiment of the present application specifically includes the following steps:

[0168] S501. According to the main lines arranged in the substation area and the multiple branch lines corresponding to the main lines, determine the starting point of part of the main lines, the first monitoring point of part of the main lines and the second monitoring point of the target branch lines in each monitoring area.

[0169] S502: Determine the boundary range of the monitoring area based on the starting point, the first monitoring point, the second monitoring point and the end of the target branch line.

[0170] S503: Divide the area into multiple monitoring areas based on each boundary range.

[0171] S504, calling each monitor arranged at the output end of the transformer, the first monitoring point and the second monitoring point to monitor the output power of part of the main line and the output power of the target branch line, calling each smart meter arranged at the end of the target branch line to collect the power consumption at the end of the target branch line.

[0172] S505: Calculate the line loss rate of the partial main lines based on the output power of the partial main lines in the current monitoring area and the output power of the partial main lines in the next monitoring area adjacent to the current monitoring area.

[0173] S506. Calculate the line loss rate of the target branch line based on the output power and power consumption of the target branch line in the current monitoring area; obtain the target line loss rate of the current monitoring area based on the line loss rate of some main lines and the line loss rate of the target branch line.

[0174] S507 . For each monitoring area, when the output power of the monitoring area is within a preset error range, obtain the ambient temperature of the monitoring area at a plurality of adjacent target moments.

[0175] S508. Analyze the change of the target line loss rate at each target time according to the ambient temperature to obtain the interference result.

[0176] S509: Obtain the current ambient temperature of the monitoring area and the ambient temperature at the previous moment.

[0177] S510: Determine a reference line loss change rate based on the ambient temperature at the current moment, the ambient temperature at the previous moment, and the interference result.

[0178] S511. Calculate the difference between the target line loss rate of the monitoring area at the current moment and the target line loss rate at the previous moment to obtain the actual line loss change rate.

[0179] S512. Calculate the target difference between the actual line loss change rate and the reference line loss change rate; when the target difference is within the preset change error range, determine that the change of the target line loss rate at the current moment is normal; when the target difference is not within the preset change error range, determine that the change of the target line loss rate at the current moment is abnormal.

[0180] Figure 6 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. Figure 6 A block diagram of an exemplary electronic device suitable for implementing the embodiments of the present application is shown. Figure 6 The electronic device 12 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0181] like Figure 6 As shown, the electronic device 12 is in the form of a general purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that connects various system components (including the system memory 28 and the processing unit 16).

[0182] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. By way of example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0183] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0184] The system memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 5 not shown, usually called a "hard drive"). Although Figure 5 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical medium) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present application.

[0185] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described herein.

[0186] The electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboards, pointing devices, displays 24, etc.), may communicate with one or more devices that enable a user to interact with the electronic device 12, and / or may communicate with any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface 22. Furthermore, the electronic device 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 via the bus 18. It should be understood that although Figure 5 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0187] The processing unit 16 executes various functional applications and data processing by running the programs stored in the system memory 28, such as implementing the substation power grid line loss analysis method provided in the embodiment of the present application.

[0188] The embodiment of the present application also provides a computer storage medium.

[0189] The computer-readable storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, - but not limited to - a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive lists) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, a device or a device or used in combination with it.

[0190] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0191] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0192] Computer program code for performing the operation of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect through the Internet).

[0193] The embodiment of the present application also provides a computer program product.

[0194] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer program products, which can include one or more computer programs, which can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor, which can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0195] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A power grid line loss analysis platform, characterized in that: The platform includes a regional management module and a line loss analysis module; wherein: The regional management module is used to divide the substation area into multiple monitoring areas according to the main lines arranged in the substation area and the multiple branch lines corresponding to the main lines, each monitoring area includes a part of the main line and a target branch line, and the target branch line is a branch line connected to the part of the main line; Collecting electrical data of the part of the main line and the target branch line in each of the monitoring areas; The line loss analysis module is used to determine, for each monitoring area, a target line loss rate corresponding to the monitoring area based on the electrical data; the target line loss rate includes the line loss rate of the part of the main line and the line loss rate of the target branch line.

2. The power grid line loss analysis platform according to claim 1, characterized in that: The area management module includes an area division unit; The substation division unit is used to determine the starting point of the part of the main line, the first monitoring point of the part of the main line and the second monitoring point of the target branch line in each monitoring area according to the main line and the multiple branch lines corresponding to the main line arranged in the substation area; Determine a boundary range of the monitoring area based on the starting point, the first monitoring point, the second monitoring point and the end of the target branch line; Based on each of the boundary ranges, dividing the station area into a plurality of monitoring areas; in: For each monitoring area, the first monitoring point is located at the connection between the part of the main line and the target branch line, and the second monitoring point is located at one end of the target branch line close to the part of the main line; For the first monitoring area, the starting point is the output end of the transformer arranged in the substation, and for the remaining monitoring areas except the first monitoring area, the starting point is the first monitoring point of the adjacent monitoring area close to the output end.

3. The power grid line loss analysis platform according to claim 2 is characterized in that: The electrical data includes the output power of the part of the main line in the monitoring area, the output power and power consumption of the target branch line; monitors are arranged at the output end of the transformer, the first monitoring point and the second monitoring point; at least one smart meter is arranged at the end of the target branch line; The area management module also includes a monitoring unit; The monitoring unit is electrically connected to each of the monitors and the smart meters in each monitoring area, and is used to call each of the monitors to monitor the output power of the part of the main line and the output power of the target branch line, and call each of the smart meters to collect the power consumption at the end of the target branch line.

4. The power grid line loss analysis platform according to claim 3 is characterized in that: The line loss analysis module comprises a line loss calculation unit; The line loss calculation unit is used to calculate the line loss rate of the part of the main line based on the output power of the part of the main line in the current monitoring area and the output power of the part of the main line in the next monitoring area adjacent to the current monitoring area; Calculating the line loss rate of the target branch line based on the output power and the power consumption of the target branch line in the current monitoring area; The line loss rate of the main line is calculated by the following formula (1): The line loss rate of the target branch line is calculated by the following formula (2): Among them, L a Indicates the line loss rate of the main line, L G Indicates the output power of the part of the main line in the current monitoring area, L M Indicates the output power of the part of the main line in the latter monitoring area; L c represents the line loss rate of the target branch line, L G1 represents the output power of the target branch line in the current monitoring area, L M1 Indicates the power consumption.

5. The power grid line loss analysis platform according to any one of claims 1 to 4, characterized in that: The area management module further includes: an initial data calculation unit; The initial data calculation unit is used to determine, for each monitoring area, the initial line loss rate of the part of the main line based on the laying length and cable model of the part of the main line; and determine the initial line loss rate of the target branch line based on the laying length and cable model of the target branch line.

6. The power grid line loss analysis platform according to any one of claims 1 to 4, characterized in that: The platform also includes: The interference analysis module is used to analyze the interference degree of the ambient temperature of each monitoring area on the change of the target line loss rate, and obtain the interference result and the reference line loss change rate; The line loss analysis module is further used to: For any monitoring area, based on the target line loss rate at the current moment, the target line loss rate at the previous moment, the ambient temperature, the interference result and the reference line loss change rate, determine whether the change of the target line loss rate at the current moment is normal.

7. The power grid line loss analysis platform according to claim 6, characterized in that: The interference analysis module includes a long-term analysis unit and a data reference unit; the line loss analysis module also includes a change analysis unit and a temperature interference analysis unit; in: The long-term analysis unit is used to obtain, for each monitoring area, the ambient temperature of the monitoring area at multiple adjacent target moments when the output power of the monitoring area is within a preset error range; and analyze the change of the target line loss rate at each target moment according to the ambient temperature to obtain the interference result; The change analysis unit is used to calculate the difference between the target line loss rate at the current moment and the target line loss rate at the previous moment in the monitoring area to obtain an actual line loss change rate; The temperature interference analysis unit is used to obtain the ambient temperature of the monitoring area at the current moment and the ambient temperature at the previous moment; The data reference unit is used to determine the reference line loss change rate based on the ambient temperature at the current moment, the ambient temperature at the previous moment and the interference result; The temperature interference analysis unit is further used to: calculate a target difference between the actual line loss change rate and the reference line loss change rate; when the target difference is within a preset change error range, determine that the change of the target line loss rate at the current moment is normal; when the target difference is not within the preset change error range, determine that the change of the target line loss rate at the current moment is abnormal.

8. A method for analyzing line loss of a power grid in an area, characterized in that: The method is applied to the area power grid line loss analysis platform as claimed in any one of claims 1 to 7; the method comprises: According to the main lines arranged in the substation area and the multiple branch lines corresponding to the main lines, the substation area is divided into multiple monitoring areas, each monitoring area includes a part of the main line and a target branch line, and the target branch line is a branch line connected to the part of the main line; Collecting electrical data of the part of the main line and the target branch line in each of the monitoring areas; For each monitoring area, a target line loss rate corresponding to the monitoring area is determined based on the electrical data; the target line loss rate includes the line loss rate of the part of the main line and the line loss rate of the target branch line.

9. An electronic device, characterized in that: include: one or more processors; a memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the substation power grid line loss analysis method as described in claim 8.

10. A storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for analyzing line losses in a power grid in an area as claimed in claim 8 is implemented.

Images