CN111830454A - Novel intelligent meter field tester device - Google Patents

Novel intelligent meter field tester device Download PDF

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Publication number
CN111830454A
CN111830454A CN202010707802.1A CN202010707802A CN111830454A CN 111830454 A CN111830454 A CN 111830454A CN 202010707802 A CN202010707802 A CN 202010707802A CN 111830454 A CN111830454 A CN 111830454A
Authority
CN
China
Prior art keywords
tester
unit
intelligent
meter
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010707802.1A
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Chinese (zh)
Inventor
牛庆民
张庆元
张金
卢丽娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd, Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN202010707802.1A priority Critical patent/CN111830454A/en
Publication of CN111830454A publication Critical patent/CN111830454A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current

Abstract

The invention discloses a novel intelligent performance field tester device, which comprises a tester and an intelligent ammeter, wherein the tester is connected with the intelligent ammeter; the tester is connected with the intelligent electric meter in series, the tester is installed in the box body, the tester comprises a maximum power load, a timer, a synchronizer and a power meter, the tester and the intelligent electric meter carry out power comparison, and whether the intelligent electric meter is in a normal operation state or not is judged through comparison difference data. The tester is connected with the intelligent ammeter in series, the power of the intelligent ammeter is compared with the power of the tester, whether the intelligent ammeter operates normally or not is detected according to the comparison difference data, the fault finding method is suitable for finding faults of the metering device of the low-voltage intelligent ammeter, particularly under the condition that the number of meters in a transformer area is large, the fault finding time can be shortened, the labor intensity of workers is reduced, and the popularization prospect is considerable.

Description

Novel intelligent meter field tester device
Technical Field
The invention relates to the technical field of electric energy meters, in particular to a novel intelligent performance field tester device.
Background
The electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, kilowatt hour meter, and refers to an instrument for measuring various electric quantities, and when the electric energy meter is used, it should be noted that under the conditions of low voltage (not more than 500V) and small current (tens of amperes), the electric energy meter can be directly connected into a circuit for measurement, and under the conditions of high voltage or large current, the electric energy meter can not be directly connected into a circuit, and needs to be matched with a voltage transformer or a current transformer for use.
Along with the development of science and technology, the intelligent electric meter is popularized, the labor intensity of an electric power worker is reduced to a great extent, but in the existing working mode, each power station area is independently checked, the line loss of each power station area is checked every day, if an electric energy meter fails in the power station area, the line loss is increased, and for some power supply station areas with a large number of electric meters, when the electric energy meter fails, manual fault point searching is time-consuming and labor-consuming.
Therefore, in view of the above situation, there is an urgent need to develop a novel smart meter field tester apparatus to overcome the shortcomings in the current practical application.
Disclosure of Invention
The invention aims to provide a novel intelligent meter field tester device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a novel intelligent performance field tester device comprises a tester and an intelligent ammeter;
the tester is connected with the intelligent electric meter in series,
the tester is arranged in the box body,
the tester comprises a maximum power load, a timer, a synchronizer and a power meter,
the tester compares the power with the intelligent electric meter,
and judging whether the intelligent electric meter is in a normal operation state or not by comparing the difference data.
As a further scheme of the invention:
the periphery of the tester is fixedly connected with the box body through a connecting piece,
the connecting piece is made of elastic material.
As a further scheme of the invention:
a plurality of damping mechanisms are uniformly arranged between the bottom of the tester and the box body,
the shock absorption mechanism comprises a first mounting seat and a second mounting seat which are arranged up and down symmetrically,
the first mounting seat is fixedly connected with the bottom of the tester,
the second mounting seat is fixedly connected with the box body,
and a cross bar is arranged between the first mounting seat and the second mounting seat.
As a further scheme of the invention:
two lantern rings are symmetrically and slidably arranged on the left side and the right side of the cross rod,
the two lantern rings are fixedly connected through a connecting spring sleeved on the cross rod,
and the upper and lower sides of the lantern ring are symmetrically hinged with two connecting rods,
the connecting rod positioned at the upper side is hinged with the first mounting seat,
the connecting rod on the lower side is hinged with the second mounting seat.
As a further scheme of the invention:
also comprises a monitoring platform arranged in the platform area,
the tester is provided with a test module.
As a further scheme of the invention:
the test module is wirelessly connected with the monitoring platform through the communication module,
the tester detects the intelligent electric meter through the test module,
and sending the detection result to a monitoring platform.
As a further scheme of the invention:
the test module comprises a data sending unit, a tester data input unit, a comparison unit, an intelligent meter data input unit, a data storage unit and a display unit.
As a further scheme of the invention:
the tester data input unit and the intelligent meter data input unit are both connected with the comparison unit, and the comparison unit is connected with the display unit.
As a further scheme of the invention:
the monitoring platform comprises a data receiving unit, a data statistical unit, a data analysis unit and a remote guidance unit.
As a further scheme of the invention:
the data receiving unit, the data statistical unit, the data analysis unit and the remote guidance unit are connected in sequence.
Compared with the prior art, the invention has the beneficial effects that: the tester is connected with the intelligent ammeter in series, the power of the intelligent ammeter is compared with the power of the tester, whether the intelligent ammeter operates normally or not is detected according to the comparison difference data, the fault finding method is suitable for finding faults of the metering device of the low-voltage intelligent ammeter, particularly under the condition that the number of meters in a transformer area is large, the fault finding time can be shortened, the labor intensity of workers is reduced, and the popularization prospect is considerable.
Drawings
Fig. 1 is a schematic structural diagram of a novel intelligent meter field tester device.
Fig. 2 is a schematic structural diagram of a box in embodiment 2 of the novel intelligent meter field tester device.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a block diagram of the structure of the novel smart meter field tester apparatus in embodiment 3.
Fig. 5 is a block diagram of a test module in embodiment 3 of the novel smart meter field tester apparatus.
Fig. 6 is a block diagram of a monitoring platform in embodiment 3 of the novel smart meter field tester apparatus.
In the figure:
1-a box body,
2-a tester,
21-test module,
211-a data transmission unit,
212-tester data input Unit,
213-comparison unit,
214-Smart watch data input Unit,
215-data storage unit,
216-display unit,
22-a communication module,
23-a monitoring platform,
231-data receiving unit,
232-data statistic unit,
233-data analysis unit,
234-remote guidance unit,
3-connecting piece,
4-a damping mechanism,
41-a first mounting seat,
42-a second mounting seat,
43-cross bar,
44-lantern ring,
45-connecting spring,
46-connecting rod.
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.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1, in an embodiment of the present invention, a novel intelligent performance field tester apparatus includes a tester 2 and an intelligent electric meter; the tester 2 is connected with the intelligent electric meter in series, the tester 2 is installed inside the box body 1 and comprises a maximum power load, a timer, a synchronizer and a power meter, the tester and the intelligent electric meter are compared in power, and whether the intelligent electric meter is in a normal operation state or not is judged through comparing difference data;
specifically, in this embodiment, the tester 2 can perform live-line operation on site, thereby reducing the power outage time.
Example 2
Referring to fig. 1, in an embodiment of the present invention, a novel intelligent performance field tester apparatus includes a tester 2 and an intelligent electric meter; the tester 2 is connected with the intelligent electric meter in series, the tester 2 is installed inside the box body 1 and comprises a maximum power load, a timer, a synchronizer and a power meter, the tester and the intelligent electric meter are compared in power, and whether the intelligent electric meter is in a normal operation state or not is judged through comparing difference data;
specifically, in this embodiment, the tester 2 can perform live-line operation on site, thereby reducing the power outage time.
Referring to fig. 2-3, the present embodiment is different from embodiment 1 in that:
the periphery of the tester 2 is fixedly connected with the box body 1 through the connecting piece 3, the connecting piece 3 is made of elastic materials, the tester 2 is prevented from being rigidly connected with the box body 1, and therefore the tester 2 is protected by shock absorption and buffering; a plurality of damping mechanisms 4 are uniformly arranged between the bottom of the tester 2 and the box body 1, each damping mechanism 4 comprises a first mounting seat 41 and a second mounting seat 42 which are vertically and symmetrically arranged, the first mounting seats 41 are fixedly connected with the bottom of the tester 2, the second mounting seats 42 are fixedly connected with the box body 1, and a cross rod 43 is arranged between the first mounting seats 41 and the second mounting seats 42; the left and right sides symmetry slidable mounting of horizontal pole 43 has two lantern rings 44, two lantern rings 44 establish connecting spring 45 fixed connection on horizontal pole 43 through the cover, and the upper and lower bilateral symmetry of lantern ring 44 articulates and installs two connecting rods 46, the connecting rod 46 that is located the upside is articulated with first mount pad 41, the connecting rod 46 that is located the downside is articulated with second mount pad 42, when detector 2 receives the vibration, lantern ring 44 takes place the displacement, thereby make connecting spring 45 take place deformation, connecting spring 45 turns into elastic potential energy with vibration energy and absorbs, buffer protection to tester 2.
Example 3
Referring to fig. 1, in an embodiment of the present invention, a novel intelligent performance field tester apparatus includes a tester 2 and an intelligent electric meter; the tester 2 is connected with the intelligent electric meter in series, the tester 2 is installed inside the box body 1 and comprises a maximum power load, a timer, a synchronizer and a power meter, the tester and the intelligent electric meter are compared in power, and whether the intelligent electric meter is in a normal operation state or not is judged through comparing difference data;
specifically, in this embodiment, the tester 2 can perform live-line operation on site, thereby reducing the power outage time.
Referring to fig. 2-3, embodiment 2 differs from embodiment 1 in that:
the periphery of the tester 2 is fixedly connected with the box body 1 through the connecting piece 3, the connecting piece 3 is made of elastic materials, the tester 2 is prevented from being rigidly connected with the box body 1, and therefore the tester 2 is protected by shock absorption and buffering; a plurality of damping mechanisms 4 are uniformly arranged between the bottom of the tester 2 and the box body 1, each damping mechanism 4 comprises a first mounting seat 41 and a second mounting seat 42 which are vertically and symmetrically arranged, the first mounting seats 41 are fixedly connected with the bottom of the tester 2, the second mounting seats 42 are fixedly connected with the box body 1, and a cross rod 43 is arranged between the first mounting seats 41 and the second mounting seats 42; the left and right sides symmetry slidable mounting of horizontal pole 43 has two lantern rings 44, two lantern rings 44 establish connecting spring 45 fixed connection on horizontal pole 43 through the cover, and the upper and lower bilateral symmetry of lantern ring 44 articulates and installs two connecting rods 46, the connecting rod 46 that is located the upside is articulated with first mount pad 41, the connecting rod 46 that is located the downside is articulated with second mount pad 42, when detector 2 receives the vibration, lantern ring 44 takes place the displacement, thereby make connecting spring 45 take place deformation, connecting spring 45 turns into elastic potential energy with vibration energy and absorbs, buffer protection to tester 2.
Referring to fig. 4-6, the difference between the present embodiment and the embodiments 1-2 is:
the intelligent ammeter intelligent monitoring system is characterized by further comprising a monitoring platform 23 arranged in the transformer area, a testing module 21 is arranged in the tester 2, the testing module 21 is wirelessly connected with the monitoring platform 23 through a communication module 22, the tester 2 detects the intelligent ammeter through the testing module 21 and sends a detection result to the monitoring platform 23, and the monitoring platform 23 analyzes the detection result and then remotely guides a detector to operate the detector 2;
the test module 21 comprises a data sending unit 211, a tester data input unit 212, a comparison unit 213, a smart meter data input unit 214, a data storage unit 215 and a display unit 216, wherein the data sending unit 211 is used for sending the detection result data, and the data storage unit 215 is used for storing the detection result data; the tester data input unit 212 and the intelligent meter data input unit 214 are both connected with the comparison unit 213, the comparison unit 213 is connected with the display unit 216, the comparison unit 213 receives and compares data transmitted by the tester data input unit and the intelligent meter data input unit, and sends a comparison result to the display unit 216 for display, so that field testers can check the comparison result;
the monitoring platform 23 includes a data receiving unit 231, a data statistics unit 232, a data analysis unit 233, and a remote guidance unit 234, where the data receiving unit 231, the data statistics unit 232, the data analysis unit 233, and the remote guidance unit 234 are connected in sequence, and are used to receive, statistically classify, and analyze the detection result data, and remotely guide the tester through the remote guidance unit 234, so as to assist the tester in completing the detection of the smart meter.
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.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Claims (10)

1. A novel intelligent performance field tester device is characterized by comprising a tester (2) and an intelligent ammeter; the intelligent power meter is characterized in that the tester (2) is connected with the intelligent electric meter in series, the tester (2) is installed in the box body (1), the tester comprises a maximum power load, a timer, a synchronizer and a power meter, power comparison is carried out between the tester and the intelligent electric meter, and whether the intelligent electric meter is in a normal operation state or not is judged through comparison difference data.
2. The novel intelligent performance field tester device according to claim 1, wherein the periphery of the tester (2) is fixedly connected with the box body (1) through a connecting piece (3), and the connecting piece (3) is made of elastic material.
3. The novel intelligent performance field tester device according to claim 2, wherein a plurality of damping mechanisms (4) are uniformly arranged between the bottom of the tester (2) and the box body (1), each damping mechanism (4) comprises a first mounting seat (41) and a second mounting seat (42) which are arranged in an up-down symmetrical manner, the first mounting seats (41) are fixedly connected with the bottom of the tester (2), the second mounting seats (42) are fixedly connected with the box body (1), and a cross rod (43) is arranged between the first mounting seats (41) and the second mounting seats (42).
4. The novel intelligent meter field tester device according to claim 3, wherein the left side and the right side of the cross rod (43) are symmetrically and slidably provided with two lantern rings (44), the two lantern rings (44) are fixedly connected through a connecting spring (45) sleeved on the cross rod (43), the upper side and the lower side of the lantern rings (44) are symmetrically and hingedly provided with two connecting rods (46), the connecting rod (46) positioned on the upper side is hinged to the first mounting seat (41), and the connecting rod (46) positioned on the lower side is hinged to the second mounting seat (42).
5. The novel intelligent performance field tester device according to claim 1, further comprising a monitoring platform (23) disposed in the platform area, wherein the tester (2) is provided with a testing module (21).
6. The novel intelligent performance field tester device according to claim 5, wherein the testing module (21) is wirelessly connected with the monitoring platform (23) through the communication module (22), and the tester (2) detects the intelligent electric meter through the testing module (21) and sends the detection result to the monitoring platform (23).
7. The novel intelligent performance field tester device according to claim 6, wherein the test module (21) comprises a data transmission unit (211), a tester data input unit (212), a comparison unit (213), a smart meter data input unit (214), a data storage unit (215), and a display unit (216).
8. The new intelligent performance field tester device according to claim 7, wherein the tester data input unit (212) and the smart meter data input unit (214) are both connected with the comparison unit (213), and the comparison unit (213) is connected with the display unit (216).
9. The novel intelligent performance site tester device according to claim 8, wherein the monitoring platform (23) comprises a data receiving unit (231), a data statistics unit (232), a data analysis unit (233), and a remote guidance unit (234).
10. The novel smart meter field tester device according to claim 9, characterized in that the data receiving unit (231), the data statistics unit (232), the data analysis unit (233), and the remote guidance unit (234) are connected in sequence.
CN202010707802.1A 2020-07-21 2020-07-21 Novel intelligent meter field tester device Pending CN111830454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010707802.1A CN111830454A (en) 2020-07-21 2020-07-21 Novel intelligent meter field tester device

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Application Number Priority Date Filing Date Title
CN202010707802.1A CN111830454A (en) 2020-07-21 2020-07-21 Novel intelligent meter field tester device

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Publication Number Publication Date
CN111830454A true CN111830454A (en) 2020-10-27

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105068038A (en) * 2015-08-12 2015-11-18 国网辽宁省电力有限公司朝阳供电公司 Operation and maintenancedevice of intelligent ammeter
WO2016090908A1 (en) * 2014-12-12 2016-06-16 国家电网公司 Memory simulation testing board system and testing method for embedded application of intelligent electric meter
US20160259026A1 (en) * 2015-03-04 2016-09-08 Siemens Industry, Inc. Apparatus and methods for field testing an electrical panel meter system
CN105974355A (en) * 2016-06-13 2016-09-28 国网辽宁省电力有限公司朝阳供电公司 Electric energy metering device comprehensive operation detector and use method thereof
CN107422292A (en) * 2017-04-10 2017-12-01 华立科技股份有限公司 Correction method for intelligent electric meter
CN207408579U (en) * 2017-07-18 2018-05-25 保定市宇创电气科技有限公司 Low-voltage platform area intelligent diagnosing instrument
CN108109363A (en) * 2018-01-31 2018-06-01 深圳市锦熹科技有限公司 Check instrument and application method in a kind of intelligent electric meter scene based on infrared communication
CN208227509U (en) * 2018-05-29 2018-12-11 陕西天泽中孚实业有限公司 A kind of geographical information query network information gathering safety device
CN109298379A (en) * 2018-12-06 2019-02-01 国网四川省电力公司电力科学研究院 A kind of recognition methods of the intelligent electric meter site error exception based on data monitoring
CN110361688A (en) * 2019-08-02 2019-10-22 国网天津市电力公司 A kind of high voltage customer three-phase intelligent electric-energy meter condition monitoring system and method
CN209707673U (en) * 2019-02-27 2019-11-29 武汉武高电测电气有限公司 Multifunctional electric energy meter on-site calibrator
CN111257820A (en) * 2020-02-20 2020-06-09 国网山西省电力公司 Three-phase intelligent electric meter wiring remote detection method

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016090908A1 (en) * 2014-12-12 2016-06-16 国家电网公司 Memory simulation testing board system and testing method for embedded application of intelligent electric meter
US20160259026A1 (en) * 2015-03-04 2016-09-08 Siemens Industry, Inc. Apparatus and methods for field testing an electrical panel meter system
CN105068038A (en) * 2015-08-12 2015-11-18 国网辽宁省电力有限公司朝阳供电公司 Operation and maintenancedevice of intelligent ammeter
CN105974355A (en) * 2016-06-13 2016-09-28 国网辽宁省电力有限公司朝阳供电公司 Electric energy metering device comprehensive operation detector and use method thereof
CN107422292A (en) * 2017-04-10 2017-12-01 华立科技股份有限公司 Correction method for intelligent electric meter
CN207408579U (en) * 2017-07-18 2018-05-25 保定市宇创电气科技有限公司 Low-voltage platform area intelligent diagnosing instrument
CN108109363A (en) * 2018-01-31 2018-06-01 深圳市锦熹科技有限公司 Check instrument and application method in a kind of intelligent electric meter scene based on infrared communication
CN208227509U (en) * 2018-05-29 2018-12-11 陕西天泽中孚实业有限公司 A kind of geographical information query network information gathering safety device
CN109298379A (en) * 2018-12-06 2019-02-01 国网四川省电力公司电力科学研究院 A kind of recognition methods of the intelligent electric meter site error exception based on data monitoring
CN209707673U (en) * 2019-02-27 2019-11-29 武汉武高电测电气有限公司 Multifunctional electric energy meter on-site calibrator
CN110361688A (en) * 2019-08-02 2019-10-22 国网天津市电力公司 A kind of high voltage customer three-phase intelligent electric-energy meter condition monitoring system and method
CN111257820A (en) * 2020-02-20 2020-06-09 国网山西省电力公司 Three-phase intelligent electric meter wiring remote detection method

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Application publication date: 20201027