Non-contact meter charging abnormity remote transmission device and method

Abstract

The invention provides a non-contact remote transmission device for abnormal charging of a meter, which is matched with a secondary voltage access line and a secondary current access line on the meter and comprises a signal logic judgment unit and a remote transmission communication unit, the signal logic judgment unit senses current signals of three phases A, B and C on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judges whether each phase on the secondary voltage access line and the secondary current access line is normally accessed or not according to the sensing result. When the three phases A, B and C on the secondary current access line are judged to be normally accessed and at least one of the three phases A, B and C on the secondary voltage access line is judged to be abnormally accessed, abnormal alarm information is generated and further sent to the remote transmission communication unit; and the remote transmission communication unit forwards the abnormal alarm information to a cloud end or a remote data center. According to the invention, the defect of the secondary voltage access line of the meter can be pre-judged in advance, and the responsibility of maintenance and management can be clarified.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power systems, and in particular to a non-contact meter charging abnormality remote transmission device and method. Background Art

[0002] With the development of power grid, there are more and more substations, and the metering charges are also increasing. At present, the equipment of substations is maintained and managed by multiple professional teams, but there are cross-interfaces in the maintenance and management of equipment, which easily leads to unclear responsibility when equipment failure occurs. For example, if the abnormal billing of substation metering is caused by defects in the meter itself, the metering maintenance team is responsible for maintenance and management; for another example, if the abnormal billing of substation metering is caused by defects in the secondary voltage access line of the meter, the relay protection team is responsible for maintenance and management.

[0003] Therefore, it is necessary to design a non-contact meter billing abnormality remote transmission device to predict the defects of the secondary voltage access line of the meter in advance, so as to directly clarify the responsibility for maintenance and management. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a non-contact meter charging abnormality remote transmission device and method for predicting the defects of the secondary voltage access line of the meter in advance, so as to directly clarify the responsibility for maintenance and management.

[0005] In order to solve the above technical problems, the embodiment of the present invention provides a non-contact meter billing abnormality remote transmission device, which cooperates with the secondary voltage access line and the secondary current access line on the meter, and includes a signal logic judgment unit and a remote transmission communication unit; wherein,

[0006] The signal logic judgment unit is used to sense the current signals of the three phases ABC on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judge whether each phase on the secondary voltage access line and the secondary current access line is normally connected according to the sensing result, and when it is determined that the three phases ABC on the secondary current access line are all normally connected and at least one phase of the three phases ABC on the secondary voltage access line is abnormally connected, generate abnormal alarm information, and further send the abnormal alarm information to the remote communication unit;

[0007] The remote communication unit is used to receive the abnormal alarm information generated by the signal logic judgment unit and forward it to the cloud or remote data center.

[0008] The signal logic judgment unit includes six clamps, three first value assignment modules, three second value assignment modules, a logic operation module and an alarm information generation module;

[0009] One end of the three clamps is respectively clamped on the phase line of one phase corresponding to the three phases ABC on the secondary voltage access line, and the other end is respectively connected to the input end of one of the three first value assignment modules; one end of the other three clamps is respectively clamped on the phase line of one phase corresponding to the three phases ABC on the secondary current access line, and the other end is respectively connected to the input end of one of the three second value assignment modules;

[0010] The input end of the logic operation module is connected to the output ends of the three first value assignment modules and the three second value assignment modules, and the output end is connected to the input end of the alarm information generation module;

[0011] The output end of the alarm information generating module is connected to the remote communication unit;

[0012] Wherein, each of the clamps is used to sense whether there is a current signal on the phase line of the phase where it is located flowing to the meter;

[0013] Each of the first assignment modules is used to initialize the assignment value to 0; and, when receiving the timing of the voltage signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is normally connected, and the assignment value thereof is corrected from 0 to 1; or, when not receiving the timing of the voltage signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is abnormally connected, and the assignment value thereof is maintained to be 0;

[0014] Each of the second value assignment modules is used to initialize the value to 0; and, when receiving the timing of the current signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is normally connected, and the value assigned thereto is corrected from 0 to 1; or, when not receiving the timing of the current signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is abnormally connected, and the value assigned thereto is maintained to 0;

[0015] The logic operation module is used to generate an alarm signal and further send it to the alarm information generation module when it is determined that the value assigned by at least one of the first assignment modules is maintained as 0 and the values ​​assigned by the three second assignment modules are all 1;

[0016] The alarm information generating module is used to generate abnormal alarm information when receiving the alarm signal generated by the logic operation module, and send the abnormal alarm information to the remote communication unit.

[0017] Wherein, the logic operation module is further used for not generating the alarm signal when it is determined that the values ​​assigned by the three first assignment modules are all 1.

[0018] Wherein, the logic operation module is further used for not generating the alarm signal when it is determined that the values ​​assigned by the three second value assignment modules are all 0.

[0019] The logic operation module is composed of three NOT gate operators, three AND gate operators and one OR gate operator;

[0020] One input end of each of the AND gate operators is connected to the output end of a corresponding one of the three first value assignment modules via a corresponding NOT gate operator, the other input end is directly connected to the output end of a corresponding one of the three second value assignment modules, and the output end is connected to a corresponding input end of the OR gate operator; wherein the two clamps corresponding to the two input ends of the same AND gate operator are in the same phase;

[0021] The output end of the OR gate operator is connected to the alarm information generating module;

[0022] When the OR gate operator generates a logic value of 1, it triggers the generation of the alarm signal; when the OR gate operator generates a logic value of 0, it does not trigger the generation of the alarm signal.

[0023] The embodiment of the present invention further provides a non-contact meter charging abnormality remote transmission method, which is implemented on the aforementioned non-contact meter charging abnormality remote transmission device, and the method comprises the following steps:

[0024] Inducing the current signals of the three phases ABC on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judging whether each phase of the secondary voltage access line and the secondary current access line is normally connected according to the sensing results, and generating abnormal alarm information when it is determined that the three phases ABC on the secondary current access line are all normally connected and at least one phase of the three phases ABC on the secondary voltage access line is abnormally connected;

[0025] The abnormal alarm information is forwarded to the cloud or remote data center.

[0026] Wherein, the method further comprises:

[0027] When it is determined that the three phases ABC on the secondary voltage access line are all normally connected, the abnormal alarm information is not generated.

[0028] Wherein, the method further comprises:

[0029] When it is determined that the three phases ABC on the secondary current access line are all abnormally connected, the abnormal alarm information is not generated.

[0030] Implementing the embodiments of the present invention has the following beneficial effects:

[0031] Under the premise that the three phases ABC on the secondary current access line are sensed to have current signals flowing to the meter (i.e. normal access), if it is sensed that at least one of the three phases ABC on the secondary voltage access line has no current signal flowing to the meter (i.e. abnormal access), the present invention generates abnormal alarm information and forwards it to the cloud or remote data center for early warning, thereby predicting the defects of the secondary voltage access line of the meter in advance to directly clarify the responsibility for maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0033] Figure 1 A schematic diagram of the connection between a non-contact meter charging abnormality remote transmission device and a secondary voltage access line and a secondary current access line on a meter provided in an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the structure of a non-contact meter charging abnormality remote transmission device provided in an embodiment of the present invention;

[0035] Figure 3 A structural diagram of a signal logic judgment unit in a non-contact meter billing abnormality remote transmission device provided in an embodiment of the present invention

[0036] Figure 4 for Figure 3 A logic operation diagram of the logic operation module contained in the signal logic judgment unit;

[0037] Figure 5 The present invention provides a flowchart of a method for remotely transmitting abnormal billing information of a contactless meter. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figures 1 to 4 As shown in the figure, a non-contact meter billing abnormality remote transmission device is proposed in an embodiment of the present invention, wherein the secondary voltage access line (such as Figure 1 The three bold lines shown in Figure 1 The signal logic judgment unit 1 and the remote communication unit 2 (as shown in FIG. Figure 2 It should be noted that the meter T is mainly used by the power sales company to count the total amount of electricity purchased when purchasing electricity from the power production company.

[0040] The signal logic judgment unit 1 is used to sense the current signals of the three-phase ABC Ua, Ub, Uc on the secondary voltage access line and the three-phase ABC Ia, Ib, Ic on the secondary current access line respectively flowing to the meter T, and judge whether each phase (such as Ua / Ub / Uc / Ia / Ib / Ic) of the secondary voltage access line and the secondary current access line is normally connected according to the sensing result, and when it is determined that the three-phase ABC Ia, Ib, Ic on the secondary current access line are all normally connected and at least one phase of the three-phase ABC Ua, Ub, Uc on the secondary voltage access line is abnormally connected, an abnormal alarm information is generated, and the abnormal alarm information is further sent to the remote communication unit 2; it can be understood that the abnormal alarm information is composed of numbers and / or text (including characters).

[0041] At this time, if Figure 3 As shown, the signal logic judgment unit 1 includes six clamps 11, three first value assignment modules 12, three second value assignment modules 13, a logic operation module 14 and an alarm information generation module 15; wherein,

[0042] One end of the three clamps 11 is clamped on the phase line corresponding to one phase of the three-phase Ua, Ub, and Uc of the secondary voltage access line ABC, and the other end is connected to the input end of one of the three first assignment modules 12; one end of the other three clamps 11 is clamped on the phase line corresponding to one phase of the three-phase Ia, Ib, and Ic of the secondary current access line ABC, and the other end is connected to the input end of one of the three second assignment modules 13;

[0043] The input end of the logic operation module 14 is connected to the output ends of the three first value assignment modules 11 and the three second value assignment modules 12, and the output end is connected to the input end of the alarm information generation module 15;

[0044] The output end of the alarm information generating module 15 is connected to the remote communication unit 2;

[0045] Each clamp 11 is used to sense whether there is a current signal flowing to the meter T on the phase line of the phase where it is located; it should be noted that current also flows on the three phases Ua, Ub, and Uc of the secondary voltage access line ABC, and the clamp 11 can be used to sense the corresponding current signal to determine whether it is normally connected;

[0046] Each first assignment module 12 is used to initialize the assignment value to 0; and, when receiving the voltage signal sensed by the connected clamp 11 flowing to the meter T, it is determined that the phase line sensed by the connected clamp 11 is normally connected, and the assignment value thereof is corrected from 0 to 1; or, when not receiving the voltage signal sensed by the connected clamp 11 flowing to the meter T, it is determined that the phase line sensed by the connected clamp 11 is abnormally connected, and the assignment value thereof is maintained to be 0;

[0047] Each second assignment module 13 is used to initialize the assignment value to 0; and, when receiving the current signal sensed by the connected clamp 11 flowing to the meter T, it is determined that the phase line sensed by the connected clamp 11 is normally connected, and the assignment value thereof is corrected from 0 to 1; or, when not receiving the current signal sensed by the connected clamp 11 flowing to the meter T, it is determined that the phase line sensed by the connected clamp 11 is abnormally connected, and the assignment value thereof is maintained to be 0;

[0048] The logic operation module 14 is used to generate an alarm signal and further send it to the alarm information generation module 15 when it is determined that the assignment of at least one of the first assignment modules 11 is maintained as 0 and the assignments of the three second assignment modules 12 are all 1, that is, the three-phase Ia, Ib, and Ic of ABC on the secondary current access line are all normally connected and at least one of the three-phase Ua, Ub, and Uc of ABC on the secondary voltage access line is abnormally connected; of course, the logic operation module 14 is also used to not generate an alarm signal when it is determined that the assignments of the three first assignment modules 12 are all 1, that is, the three-phase Ua, Ub, and Uc of ABC on the secondary voltage access line are all normally connected; and the logic operation module 14 is also used to not generate an alarm signal when it is determined that the assignments of the three second assignment modules 13 are all 0, that is, the three-phase Ia, Ib, and Ic of ABC on the secondary current access line are all abnormally connected; it should be noted that there is no single-phase defect in the three-phase Ia, Ib, and Ic of ABC on the secondary current access line, that is, either all are normal or all are abnormal;

[0049] The alarm information generating module 15 is used to generate abnormal alarm information when receiving the alarm signal generated by the logic operation module 14 , and send the abnormal alarm information to the remote communication unit 2 .

[0050] The remote communication unit 2 uses a commonly used wireless communication unit to receive the abnormal alarm information generated by the signal logic judgment unit 1 and forward it to the cloud or remote data center to clarify the responsibility for maintenance management, that is, the responsibility belongs to the relay protection team rather than the instrument measurement maintenance team.

[0051] In the embodiment of the present invention, in order to realize the specific functions of the logic operation module 14, a logic operator is used to realize it. Specifically, the logic operation module 14 is composed of three NOT gate operators (such as Figure 40), three AND gate operators (such as Figure 4 &) and an OR gate operator (as shown Figure 4 ≥) shown; wherein,

[0052] Each AND gate operator (such as Figure 4 One input terminal of &) shown in FIG. 1 is connected to a corresponding NOT gate operator (such as Figure 4 The 0 shown in FIG. 1 is connected to the output end of a corresponding one of the three first assignment modules 12, and the other input end is directly connected to the output end of a corresponding one of the three second assignment modules 13, and the output end is connected to the OR gate operator (such as Figure 4 The two input ends of the same AND gate operator are connected to a corresponding input end on the ≥ shown; wherein, the phases of the two clamps 11 corresponding to the two input ends of the same AND gate operator are the same phase, that is, the two input ends of the same AND gate operator are correspondingly connected to the A phase (or B phase or C phase) on the secondary voltage access line and the secondary current access line at the same time;

[0053] OR gate operator (such as Figure 4 The output end of ≥) shown is connected to the alarm information generating module 15;

[0054] When the logic value generated by the OR gate operator is 1, an alarm signal is triggered; when the logic value generated by the OR gate operator is 0, no alarm signal is triggered.

[0055] It should be noted that the logic operation module 14 is pre-customized, and the alarm signal generation can only be triggered when the values ​​assigned by the three first assignment modules 12 are all 1.

[0056] like Figure 5 As shown, a non-contact meter billing abnormality remote transmission method is provided in an embodiment of the present invention, which is implemented on a non-contact meter billing abnormality remote transmission device in an embodiment of the present invention, and the method includes the following steps:

[0057] Step S1, sensing the current signals of the three phases ABC on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judging whether each phase of the secondary voltage access line and the secondary current access line is normally connected according to the sensing results, and generating abnormal alarm information when it is determined that the three phases ABC on the secondary current access line are all normally connected and at least one phase of the three phases ABC on the secondary voltage access line is abnormally connected;

[0058] Step S2: forward the abnormal alarm information to the cloud or remote data center.

[0059] Wherein, the method further comprises:

[0060] When it is determined that the three phases ABC on the secondary voltage access line are all normally connected, the abnormal alarm information is not generated.

[0061] Wherein, the method further comprises:

[0062] When it is determined that the three phases ABC on the secondary current access line are all abnormally connected, the abnormal alarm information is not generated.

[0063] Implementing the embodiments of the present invention has the following beneficial effects:

[0064] Under the premise that the three phases ABC on the secondary current access line are sensed to have current signals flowing to the meter (i.e. normal access), if it is sensed that at least one of the three phases ABC on the secondary voltage access line has no voltage signal flowing to the meter (i.e. abnormal access), the present invention generates abnormal alarm information and forwards it to the cloud or remote data center for early warning, thereby predicting the defects of the secondary voltage access line of the meter in advance to directly clarify the responsibility for maintenance and management.

[0065] It is worth noting that in the above-mentioned device embodiment, the various device units included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, the specific names of the various functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0066] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A non-contact meter billing abnormality remote transmission device, characterized in that: It cooperates with the secondary voltage access line and the secondary current access line on the meter, and includes a signal logic judgment unit and a remote communication unit; wherein, The signal logic judgment unit is used to sense the current signals of the three phases ABC on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judge whether each phase on the secondary voltage access line and the secondary current access line is normally connected according to the sensing result, and when it is determined that the three phases ABC on the secondary current access line are all normally connected and at least one phase of the three phases ABC on the secondary voltage access line is abnormally connected, generate abnormal alarm information, and further send the abnormal alarm information to the remote communication unit; The remote communication unit is used to receive the abnormal alarm information generated by the signal logic judgment unit and forward it to the cloud or remote data center.

2. The non-contact meter charging abnormality remote transmission device as claimed in claim 1, characterized in that: The signal logic judgment unit includes six clamps, three first assignment modules, three second assignment modules, a logic operation module and an alarm information generation module; wherein, One end of the three clamps is respectively clamped on the phase line of one phase corresponding to the three phases ABC on the secondary voltage access line, and the other end is respectively connected to the input end of one of the three first value assignment modules; one end of the other three clamps is respectively clamped on the phase line of one phase corresponding to the three phases ABC on the secondary current access line, and the other end is respectively connected to the input end of one of the three second value assignment modules; The input end of the logic operation module is connected to the output ends of the three first value assignment modules and the three second value assignment modules, and the output end is connected to the input end of the alarm information generation module; The output end of the alarm information generating module is connected to the remote communication unit; Wherein, each of the clamps is used to sense whether there is a current signal on the phase line of the phase where it is located flowing to the meter; Each of the first assignment modules is used to initialize the assignment value to 0; and, when receiving the timing of the voltage signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is normally connected, and the assignment value thereof is corrected from 0 to 1; or, when not receiving the timing of the voltage signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is abnormally connected, and the assignment value thereof is maintained to be 0; Each of the second value assignment modules is used to initialize the value to 0; and, when receiving the timing of the current signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is normally connected, and the value assigned thereto is corrected from 0 to 1; or, when not receiving the timing of the current signal sensed by the connected clamp flowing to the meter, it is determined that the phase line where the connected clamp senses is abnormally connected, and the value assigned thereto is maintained to 0; The logic operation module is used to generate an alarm signal and further send it to the alarm information generation module when it is determined that the value assigned by at least one of the first assignment modules is maintained as 0 and the values ​​assigned by the three second assignment modules are all 1; The alarm information generating module is used to generate abnormal alarm information when receiving the alarm signal generated by the logic operation module, and send the abnormal alarm information to the remote communication unit.

3. The non-contact meter charging abnormality remote transmission device as claimed in claim 2, characterized in that: The logic operation module is further configured to not generate the alarm signal when it is determined that the values ​​assigned by the three first value assignment modules are all 1.

4. The non-contact meter charging abnormality remote transmission device as claimed in claim 3, characterized in that: The logic operation module is further configured to not generate the alarm signal when it is determined that the values ​​assigned by the three second value assignment modules are all 0.

5. The non-contact meter charging abnormality remote transmission device as claimed in claim 4, characterized in that: The logic operation module is composed of three NOT gate operators, three AND gate operators and one OR gate operator; wherein, One input end of each of the AND gate operators is connected to the output end of a corresponding one of the three first value assignment modules via a corresponding NOT gate operator, the other input end is directly connected to the output end of a corresponding one of the three second value assignment modules, and the output end is connected to a corresponding input end of the OR gate operator; wherein the two clamps corresponding to the two input ends of the same AND gate operator are in the same phase; The output end of the OR gate operator is connected to the alarm information generating module; When the OR gate operator generates a logic value of 1, it triggers the generation of the alarm signal; when the OR gate operator generates a logic value of 0, it does not trigger the generation of the alarm signal.

6. A non-contact meter billing abnormality remote transmission method, characterized in that: The method is implemented on the non-contact meter charging abnormality remote transmission device as claimed in claim 5, and the method comprises the following steps: Inducing the current signals of the three phases ABC on the secondary voltage access line and the secondary current access line respectively flowing to the meter, and judging whether each phase of the secondary voltage access line and the secondary current access line is normally connected according to the sensing results, and generating abnormal alarm information when it is determined that the three phases ABC on the secondary current access line are all normally connected and at least one phase of the three phases ABC on the secondary voltage access line is abnormally connected; The abnormal alarm information is forwarded to the cloud or remote data center.

7. The non-contact meter billing abnormality remote transmission method as claimed in claim 6, characterized in that: The method further comprises: When it is determined that the three phases ABC on the secondary voltage access line are all normally connected, the abnormal alarm information is not generated.

8. The non-contact meter billing abnormality remote transmission method as claimed in claim 7, characterized in that: The method further comprises: When it is determined that the three phases ABC on the secondary current access line are all abnormally connected, the abnormal alarm information is not generated.

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