CN114460406B - Line loss measuring and calculating device of power distribution network - Google Patents
Line loss measuring and calculating device of power distribution network Download PDFInfo
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- CN114460406B CN114460406B CN202210136071.9A CN202210136071A CN114460406B CN 114460406 B CN114460406 B CN 114460406B CN 202210136071 A CN202210136071 A CN 202210136071A CN 114460406 B CN114460406 B CN 114460406B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention relates to the technical field of distribution equipment, in particular to a line loss measuring and calculating device of a distribution network, which comprises: a housing; the loss measuring mechanism is arranged on the inner side of the shell, is connected with the cable and is used for measuring and calculating line loss; the heat dissipation mechanism is arranged outside the damage measuring mechanism and connected with the shell; wherein, heat dissipation mechanism includes: the supporting box is fixedly connected with the shell, and an air inlet pipe is fixedly connected to the outer side of the supporting box; the air inlet assembly is arranged on the inner side of the supporting box and is connected with the air inlet pipe; the air blowing assembly is arranged between the support box and the damage measuring mechanism and is connected with the air inlet assembly, the air can flow through the heat dissipation mechanism, the heat dissipation of the measuring and calculating mechanism is completed through the flowing air, and the air can uniformly enter the inner side of the shell through the matching of the air inlet assembly and the air guide assembly, so that the heat dissipation uniformity of the device is ensured.
Description
Technical Field
The invention relates to the technical field of power distribution equipment, in particular to a line loss measuring and calculating device for a power distribution network.
Background
During power transmission and distribution, the transmission of electric energy and the conversion of electromagnetic energy are realized by electric current. When current passes through a wire, loss is generated, and a large number of devices such as transformers, switches and meters in a power transmission network consume certain energy, and the energy loss in the power supply process of a power system is generally called line loss. At present, energy saving and consumption reduction research, line loss partial pressure statistics and line loss to the household statistics provide higher requirements for fine management of line loss in the power industry.
Although the existing line loss measuring and calculating device can effectively detect the line loss, most of the devices do not have a heat dissipation device, so that internal heat cannot be timely discharged after the device operates for a period of time, the accuracy of a detection result of equipment is reduced, and the service life of the equipment is greatly reduced.
Disclosure of Invention
The invention aims to provide a line loss measuring and calculating device for a power distribution network, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a line loss measuring and calculating device of a power distribution network comprises:
a housing;
the loss measuring mechanism is arranged on the inner side of the shell, is connected with the cable and is used for measuring and calculating line loss;
the heat dissipation mechanism is arranged outside the damage measuring mechanism, is connected with the shell and is used for driving air to flow so as to realize heat dissipation of the damage measuring mechanism;
wherein, heat dissipation mechanism includes:
the support box is fixedly connected with the shell, and an air inlet pipe is fixedly connected to the outer side of the support box;
the air inlet assembly is arranged on the inner side of the supporting box, is connected with the air inlet pipe and is used for driving air to flow;
the air blowing assembly is arranged between the support box and the damage measuring mechanism and is used for matching the air inlet assembly to realize the heat dissipation of the damage measuring mechanism by the flowing completion of air in the shell.
Compared with the prior art, the invention has the beneficial effects that:
when the device operates, in the process of measuring and calculating the cable line loss by the loss measuring mechanism, the air inlet assembly can drive outside air to enter the inner side of the supporting box, the air can enter the inner side of the shell through the air blowing assembly, the air blowing assembly is matched with the air inlet assembly to realize the air flow, the air can be uniformly distributed on the inner side of the shell, and the sufficiency and effectiveness of heat dissipation are ensured. Thereby guaranteed the radiating homogeneity of device, promoted the stability of measuring and calculating mechanism when using greatly, prolonged the life of equipment.
Drawings
Fig. 1 is a schematic structural diagram of a line loss measuring and calculating device of a power distribution network.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a bottom view of a support box in the line loss measuring and calculating device for the power distribution network.
Fig. 4 is an enlarged schematic view of a portion B in fig. 1.
Fig. 5 is a schematic structural diagram of a heat sink in a line loss measuring and calculating device of a power distribution network.
In the figure: 1-shell, 2-measuring device, 3-fixed box, 4-conducting wire, 5-fixed rod, 6-movable frame, 7-roller, 8-first elastic part, 9-air inlet pipe, 10-connecting pipe, 11-supporting box, 12-air guide box, 13-filter frame, 14-air outlet pipe, 15-air blowing pipe, 16-bottom plate, 17-fixed seat, 18-buffer plate, 19-sliding rod, 20-second elastic part, 21-pushing block, 22-elastic metal plate, 23-heat absorbing plate, 24-heat conducting plate, 25-heat radiating fin, 26-driving part, 27-driving rod, 28-rotating rod, 29-fan, 30-cam, 31-sliding block, 32-connecting rod, 33-limiting block, 34-connecting seat, 35-through hole, 36-third elastic piece, 37-driven rod, 38-drying tube, 39-dehumidification groove and 40-connecting hole.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Referring to fig. 1, in an embodiment of the present invention, an apparatus for measuring and calculating line loss of a power distribution network includes: a housing 1; the loss measuring mechanism is arranged on the inner side of the shell 1, is connected with the cable and is used for measuring and calculating line loss; the heat dissipation mechanism is arranged on the outer side of the loss measurement mechanism, is connected with the shell 1 and is used for driving air to flow so as to realize heat dissipation of the loss measurement mechanism; wherein, heat dissipation mechanism includes: the support box 11 is fixedly connected with the shell 1, and an air inlet pipe 9 is fixedly connected to the outer side of the support box 11; the air inlet assembly is arranged on the inner side of the support box 11, is connected with the air inlet pipe 9 and is used for driving air to flow; and the blowing assembly is arranged between the support box 11 and the damage measuring mechanism, is connected with the air inlet assembly and is used for matching with the air inlet assembly to realize the heat dissipation of the damage measuring mechanism by the air flowing in the shell 1.
In the embodiment, when the device operates, in the process of measuring and calculating the cable loss, the air inlet component can drive outside air to enter the inner side of the supporting box 11, and the air can enter the inner side of the shell 1 through the air blowing component, and the air blowing component is matched with the air inlet component, so that the air can flow, and the air can be uniformly distributed in the inner side of the shell 1, and the sufficiency and effectiveness of heat dissipation are ensured. Therefore, the uniformity of heat dissipation of the device is ensured, the stability of the measuring and calculating mechanism in use is greatly improved, and the service life of equipment is prolonged;
in addition, a plurality of air outlets are arranged on the wall of the shell 1, and dust screens are fixedly connected and arranged on the inner sides of the air outlets.
In one embodiment of the present invention, the air intake assembly includes: the driving piece 26 is fixedly connected with the support box 11, and the output end of the driving piece 26 is connected with the driving rod 27; the air guide assembly is arranged on the inner side of the support box 11, connected with the drive rod 27 and connected with the air inlet pipe 9 and used for matching with the drive rod 27 to realize the air flow.
In this embodiment, driving piece 26 is driving motor or CD-ROM drive motor, driving piece 26 fixed connection sets up the inboard top of supporting box 11, driving piece 26 output outside fixed connection is provided with actuating lever 27, and through setting up the subassembly that admits air, driving piece 26 passes through actuating lever 27 drive the air guide subassembly enables the outside air to get into supporting box 11 is inboard to it is inboard to get into casing 1 through the subassembly that blows, thereby realizes the even heat dissipation to measuring and calculating mechanism.
In one embodiment of the present invention, referring to fig. 2, the air guide assembly includes: the air guide box 12 is arranged on the inner side of the support box 11 in a sliding connection mode, is connected with the air inlet pipe 9 in a sliding mode through a connecting pipe 10, and is fixedly connected with an air outlet pipe 14 on the other side; the filter frame 13 is detachably connected to the inner side of the air guide box 12; the rotating rod 28 is rotatably connected with the air guide box 12 and is connected with the driving rod 27 through a positioning piece; the fan 29 is arranged on the inner side of the air guide box 12, is fixedly connected with the driving rod 27, and is used for matching with the driving rod 27 to realize the flow of air; the cam 30 is fixedly connected with the driving rod 27; a third elastic member 36, wherein the third elastic member 36 is disposed between the air guide box 12 and the support box 11; the sliding part is arranged on the outer side of the cam 30, is connected with the support box 11 in a sliding manner, is connected with the air guide box 12 through a connecting rod 32, and is used for matching with the cam 30 to drive the air guide box 12 to move along the wall of the support box 11.
In this embodiment, the setting element includes that fixed connection sets up the locating piece in the actuating lever 27 outside, the locating piece is in with the setting the inboard constant head tank sliding connection of bull stick 28, bull stick 28 through the spacing ring with air guide box 12 tank wall rotates to be connected, filter frame 13 is located fan 29 with between the outlet duct 14, and with air guide box 12 joint, in addition, the slider is including setting up the slider 31 of cam 30 both sides, slider 31 through stopper 33 with set up in support box 11 tank wall inboard spacing groove sliding connection, slider 31 outside rotates to be connected and is provided with connecting rod 32, the connecting rod 32 other end with air guide box 12 tank wall rotates to be connected, through setting up the air guide subassembly, can not only realize the transport to the air, can filter the air in the access arrangement moreover, and utilize slider, The cam 30 and the connecting rod 32 can realize the vibration of the air guide box 12, thereby improving the filtering efficiency of the device and ensuring the stability of air flow.
In one embodiment of the present invention, the air-blowing assembly includes: the connecting seat 34 is fixedly connected with the air guide box 12, and a plurality of through holes 35 are formed in the wall of the connecting seat 34; the air blowing pipe 15 is arranged between the damage measuring mechanisms of the support box 11; and the connecting assembly is arranged between the air blowing pipe 15 and the connecting seat 34 and is used for matching with the lifting of the air guide box 12 to realize the rotation of the air blowing pipe 15.
In this embodiment, the through-hole 35 is located the connecting seat 34 is close to on the gas guide box 12 one end conch wall, the connecting seat 34 with coupling assembling threaded connection, and other end outside fixed connection is provided with a plurality of gas blow pipes 15, and through setting up the subassembly of blowing, can not only send the air into casing 1 inboardly, can cooperate the lift of gas guide box 12 to realize moreover the rotation of gas blow pipe 15 to make the air at the inboard evenly distributed of casing 1, guarantee radiating homogeneity.
In an embodiment of the present invention, referring to fig. 3 and 4, the connecting assembly includes: the driven rod 37 is in threaded connection with the connecting seat 34, is in rotary connection with the wall of the supporting box 11, and is fixedly connected with the blowing pipe 15; and a drying member which is screw-coupled to the driven rod 37 for drying and delivering air into the blowing pipe 15.
In this embodiment, the drying piece include with driven lever 37 threaded connection's drying tube 38, drying tube 38 inboard is provided with the dehumidification groove 39 that is used for placing the drier, drying tube 38 with be provided with the connecting hole 40 that is used for supplying the air flow on the blow pipe 15 linking department pipe wall, through setting up coupling assembling, can not only realize the flow of air, can accomplish the dehumidification to the air at the air flow in-process moreover, and realize the rotation of blow pipe 15 with the cooperation of connecting seat 34 to make the air can be at the inboard evenly distributed of casing 1, guarantee dry sufficiency and homogeneity.
In an embodiment of the present invention, the damage measuring mechanism includes: the measuring and calculating device 2 is arranged on the inner side of the shell 1, and is connected with the shell 1 through a fixing box 3; the lead 4 is connected with the measuring and calculating device 2, is connected with a cable through a probe and is used for realizing the measurement and calculation of line loss by matching with the measuring and calculating device 2; and the supporting component is arranged on the inner side of the fixed box 3 and is connected with the lead 4.
In this embodiment, 4 lead that link to each other with measuring and calculating ware 2 pass through the probe and link to each other with the cable, and measuring and calculating ware 2 can carry out effectual detection to the line loss of cable, and the support assembly set up the flexible of 4 leads of tender realization to make things convenient for people to accomplish the detection to the line loss according to actual conditions, promoted the convenience of people when detecting greatly.
In one embodiment of the invention, the support assembly comprises: the fixed rod 5 is fixedly connected with the fixed box 3, and the outer side of the fixed rod 5 is provided with a movable frame 6 in a sliding connection manner; the first elastic piece 9, the first elastic piece 9 is arranged between the fixed rod 5 and the movable frame 6; and the roller 7 is rotationally connected with the movable frame 6 and is connected with the lead 4.
In this embodiment, 5 fixed connection of dead lever sets up 11 inboard bottoms of supporting box, 5 outside sliding connection of dead lever is provided with adjustable shelf 6, adjustable shelf 6 with fixed connection is provided with first elastic component 9 between the dead lever 5, first elastic component 9 is first spring, adjustable shelf 6 is kept away from 5 one end outsides of dead lever are rotated and are connected and be provided with gyro wheel 7, gyro wheel 7 with 4 butts of wire through setting up supporting component, can realize the support to wire 4, and then realize wire 4's flexible to guarantee that the probe can carry out effectual detection to the cable, strengthened the suitability of device greatly.
In one embodiment of the present invention, the method further comprises: the supporting mechanism is arranged on the outer side of the shell 1 and used for realizing vibration and shock absorption of the shell 1; wherein, the supporting mechanism includes: the bottom plate 16 is arranged on the outer side of the shell 1, and a fixed seat 17 is fixedly connected to the outer side of the bottom plate 16; the buffer plate 18 is slidably connected to the inner side of the fixed seat 17, and a slide rod 19 slidably connected with the fixed seat 17 is fixedly connected to the outer side of the buffer plate 18; the fixed block is arranged on the outer side of the fixed seat 17, is fixedly connected with the shell 1, is fixedly connected with the sliding rod 19, and is connected with the fixed seat 17 through a second elastic part 20; the buffer piece is arranged between the fixing seat 17 and the fixing blocks and used for being matched with the bottom plate 16 to achieve shock absorption of the shell 1.
In this embodiment, the buffering member includes pushing blocks 21 slidably connected to two sides of the fixed seat 17, the pushing blocks 21 are wedge-shaped blocks, and the inclined surfaces of the pushing blocks are abutted to the fixed seat 17, an elastic metal plate 22 is disposed between the pushing blocks 21 and the fixed block, the second elastic member 20 is a second spring, the second spring is fixedly connected to the fixed seat 17 and the fixed block, the gift is disposed between the fixed seat 17 and the fixed block, a buffer solution is disposed inside the fixed seat 17, a buffer plate 18 slidably connected to the fixed seat 17 is disposed inside the buffer solution, a sliding rod 19 connected to the fixed block is fixedly connected to the outside of the buffer plate 18, and by providing a supporting mechanism, the influence of vibration on the casing 1 can be reduced, so that the stability of the casing 1 during use is ensured, the service life of the device is prolonged, and the stable measurement and calculation are ensured;
in addition, the outer sides of the two ends of the bottom plate 16 are fixedly connected with supporting blocks, the inner sides of the supporting blocks are slidably connected with movable blocks fixedly connected with the shell 1, and the stability of the device can be further enhanced by arranging the supporting blocks and the movable blocks.
In an embodiment of the present invention, please refer to fig. 1 and fig. 5, which further includes: the heat dissipation piece is arranged between the measuring and calculating device 2 and the shell 1; the heat dissipation member comprises a heat absorption plate 23, and the heat absorption plate 23 is arranged on the outer side of the measuring and calculating device 2 and fixedly connected with the shell 1; the heat conducting plate 24 is fixedly connected between the heat absorbing plate 23 and the shell 1 and is connected with the heat radiating fins 25 arranged on the outer side of the shell 1, and the heat radiating capacity of the device can be further enhanced by arranging the heat radiating pieces.
The line loss measuring and calculating device of the power distribution network can realize the flow of air by arranging the heat dissipation mechanism, further can finish the heat dissipation of the measuring and calculating mechanism by the flowing air, and the air inlet component is matched with the air guide component to ensure that the air uniformly enters the inner side of the shell 1, thereby ensuring the uniformity of the heat dissipation of the device, greatly improving the stability of the measuring and calculating mechanism in use, prolonging the service life of equipment, driving the air guide component by arranging the air inlet component and the driving piece 26 to drive the air guide component through the driving rod 27, enabling the outside air to enter the inner side of the supporting box 11, and entering the inner side of the shell 1 through the air blowing component, thereby realizing the uniform heat dissipation of the measuring and calculating mechanism, not only can realize the air conveying, but also can filter the air entering the device by arranging the air guide component, and can realize the vibration of the air guide box 12 by utilizing the sliding piece, the cam 30 and the connecting rod 32, thereby hoisting device's filtration efficiency has guaranteed the stability that the air flows, through setting up the subassembly of blowing, can not only send the air into casing 1 inboardly, can cooperate the lift realization of air guide box 12 in addition the rotation of gas blow pipe 15 to make the air at 1 inboard evenly distributed of casing, guarantee radiating homogeneity, through setting up coupling assembling, can not only realize the flow of air, and can accomplish the dehumidification to the air at the air flow in-process, and realize the rotation of gas blow pipe 15 with the cooperation of connecting seat 34, thereby make the air can be at 1 inboard evenly distributed of casing, guarantee dry sufficiency and homogeneity, through setting up supporting mechanism, can reduce the influence that the vibration caused to casing 1, thereby guarantee the stability of casing 1 when using, lifting means's life, and guarantee that the stability of calculating goes on.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (3)
1. Line loss measuring and calculating device of distribution network, its characterized in that includes:
a housing;
the loss measuring mechanism is arranged on the inner side of the shell, is connected with the cable and is used for measuring and calculating line loss;
the heat dissipation mechanism is arranged outside the damage measuring mechanism, is connected with the shell and is used for driving air to flow so as to realize heat dissipation of the damage measuring mechanism;
wherein, heat dissipation mechanism includes:
the supporting box is fixedly connected with the shell, and an air inlet pipe is fixedly connected to the outer side of the supporting box;
the air inlet assembly is arranged on the inner side of the supporting box, is connected with the air inlet pipe and is used for driving air to flow;
the blowing assembly is arranged between the support box and the damage measuring mechanism, is connected with the air inlet assembly and is used for matching with the air inlet assembly to realize the air flow in the shell to finish the heat dissipation of the damage measuring mechanism;
the damage measuring mechanism comprises:
the measuring and calculating device is arranged on the inner side of the shell and is connected with the shell through a fixing box;
the conducting wire is connected with the measuring and calculating device, is connected with the cable through a probe and is used for realizing the measurement and calculation of the line loss by matching with the measuring and calculating device;
the supporting component is arranged on the inner side of the fixed box and is connected with the lead;
the air intake assembly includes:
the driving piece is fixedly connected with the supporting box, and the output end of the driving piece is connected with the driving rod;
the air guide assembly is arranged on the inner side of the supporting box, is connected with the driving rod, is connected with the air inlet pipe and is used for matching with the driving rod to realize air flow;
the air guide assembly includes:
the air guide box is arranged on the inner side of the support box in a sliding connection mode and is connected with the air inlet pipe in a sliding mode through a connecting pipe, and an air outlet pipe is fixedly connected to the other side of the air guide box;
the filter frame is detachably connected to the inner side of the air guide box;
the rotating rod is rotatably connected with the air guide box and is connected with the driving rod through a positioning piece;
the fan is arranged on the inner side of the air guide box, is fixedly connected with the driving rod and is used for matching with the driving rod to realize the air flow;
the cam is fixedly connected with the driving rod;
the third elastic piece is arranged between the air guide box and the support box;
the sliding part is arranged on the outer side of the cam, is connected with the supporting box in a sliding manner, is connected with the air guide box through a connecting rod, and is used for matching with the cam to drive the air guide box to move along the wall of the supporting box;
the air blowing assembly comprises:
the connecting seat is fixedly connected with the air guide box, and a plurality of through holes are formed in the wall of the connecting seat;
the air blowing pipe is arranged between the support box and the damage detection mechanism;
the connecting assembly is arranged between the air blowing pipe and the connecting seat and is used for matching with the lifting of the air guide box to realize the rotation of the air blowing pipe;
the connecting assembly includes:
the driven rod is in threaded connection with the connecting seat, is rotatably connected with the wall of the supporting box and is fixedly connected with the air blowing pipe;
and the drying piece is in threaded connection with the driven rod and is used for drying and conveying air into the air blowing pipe.
2. The line loss gauging device for an electrical distribution network according to claim 1, wherein said support assembly comprises:
the fixed rod is fixedly connected with the fixed box, and the outer side of the fixed rod is provided with a movable frame in a sliding connection manner;
the first elastic piece is arranged between the fixed rod and the movable frame;
the idler wheel is connected with the movable frame in a rotating mode and connected with the lead.
3. The apparatus for measuring and calculating the line loss of a power distribution network according to claim 1, further comprising:
the supporting mechanism is arranged on the outer side of the shell and used for realizing vibration and shock absorption of the shell;
wherein, the supporting mechanism includes:
the bottom plate is arranged on the outer side of the shell, and a fixed seat is fixedly connected to the outer side of the bottom plate;
the buffer plate is arranged on the inner side of the fixed seat in a sliding connection mode, and a sliding rod in sliding connection with the fixed seat is fixedly connected to the outer side of the buffer plate;
the fixed block is arranged on the outer side of the fixed seat, is fixedly connected with the shell, is fixedly connected with the sliding rod, and is connected with the fixed seat through a second elastic piece;
the buffer piece is arranged between the fixing seat and the fixing block and used for being matched with the bottom plate to achieve shock absorption of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210136071.9A CN114460406B (en) | 2022-02-15 | 2022-02-15 | Line loss measuring and calculating device of power distribution network |
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| CN202210136071.9A CN114460406B (en) | 2022-02-15 | 2022-02-15 | Line loss measuring and calculating device of power distribution network |
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