CN116008696A - Line monitoring system and cable tapping box - Google Patents
Line monitoring system and cable tapping box Download PDFInfo
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- CN116008696A CN116008696A CN202211630913.2A CN202211630913A CN116008696A CN 116008696 A CN116008696 A CN 116008696A CN 202211630913 A CN202211630913 A CN 202211630913A CN 116008696 A CN116008696 A CN 116008696A
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Abstract
The invention discloses a line monitoring system and a cable tapping box. The line monitoring system comprises at least two groups of monitoring units, wherein the number of the monitoring units is greater than or equal to the number of sub-lines contained in a bus to be monitored, and the bus to be monitored contains at least two groups of sub-lines; the monitoring unit comprises a negative control terminal and a mutual inductor, and the sub-lines are arranged in the negative control terminal and the mutual inductor in series. According to the embodiment of the invention, the monitoring unit is arranged on each group of sub-circuits in the power supply system, so that the information such as the current, voltage, power and electric quantity information of each group of sub-circuits is monitored in real time, the operation condition of each outgoing line is conveniently analyzed and monitored, the problem of low abnormal investigation efficiency of the manual line is solved, and the manual verification quantity is reduced. Meanwhile, the circuit monitoring system improves the utilization rate of hardware resources and the convenience of circuit management.
Description
Technical Field
The invention relates to the technical field of power analysis, in particular to a line monitoring system and a cable tapping box.
Background
Electric energy is one of main energy sources in modern society, and has very important significance in improving the utilization rate of electric energy and reducing the loss of electric energy. The line loss is one of the main problems of large electric energy loss and unavoidable electric energy transmission, and how to effectively control, reduce the line loss and improve the electric energy transmission efficiency becomes a problem which needs to be researched and solved by power supply enterprises.
Line drop and line operation monitoring are now particularly important. Traditional contemporaneous line loss management can only reflect line loss abnormality of a certain area, and can not be directly positioned on a specific abnormal line section, so that staff needs to spend a great deal of time on line loss analysis and investigation of the whole area. In the field investigation process, manual measurement is a common inspection mode, but unsafe factors and inaccuracy of measurement results often exist, so that loss reduction efficiency is low.
Disclosure of Invention
The invention provides a line monitoring system and a cable tapping box, which are used for solving the problem of low line abnormality investigation efficiency.
According to one aspect of the invention, a line monitoring system is provided, wherein the line monitoring system comprises at least two groups of monitoring units, the number of the monitoring units is greater than or equal to the number of sub-lines contained in a bus to be monitored, and the bus to be monitored contains at least two groups of sub-lines;
the monitoring unit comprises a negative control terminal device and a mutual inductor, and the sub-lines are arranged in the negative control terminal device and the mutual inductor in series.
Optionally, the monitoring units are in one-to-one correspondence with the sub-circuits and are electrically connected.
Optionally, the line monitoring system further comprises a shunt switch;
the shunt switches are arranged between the bus to be monitored and the sub-lines in series and are used for decomposing the bus to be monitored into at least two groups of sub-lines, and the number of the shunt switches is the same as that of the sub-lines.
Optionally, the bus to be monitored includes three groups of sub-lines;
the line monitoring system comprises three groups of monitoring units.
Optionally, the line monitoring system further comprises a data processing unit;
the data processing unit is electrically connected with the monitoring unit and is used for carrying out statistical analysis on the electric energy data in the sub-line acquired by the monitoring unit.
Optionally, the data processing unit includes an alarm subunit;
the alarm subunit is used for feeding back the information of the sub-line.
According to another aspect of the present invention, there is provided a cable breakout box including a line monitoring system;
the cable tapping box further comprises a tapping box body, and the line monitoring system is arranged in the tapping box body.
Optionally, the cable tapping box comprises a first slot and a second slot;
the mutual inductor is arranged in the first groove;
the negative control terminal device is arranged in the second slot position.
Optionally, the first slot position and the second slot position are disposed on two sides of the cable tapping box, which are disposed opposite to each other.
Optionally, the cable tapping box further comprises a junction box;
the circuit of the negative control terminal equipment is arranged in the junction box and is electrically connected with the transformer through the junction box.
According to the technical scheme provided by the embodiment of the invention, the monitoring unit is arranged on each group of sub-circuits in the power supply system, so that the information such as the current, voltage, power and electric quantity information of each group of sub-circuits is monitored in real time, the circuit is conveniently analyzed and the running condition of each outgoing line is conveniently monitored, the problem of low manual circuit checking efficiency in the prior art is solved, and the manual checking quantity is reduced. Meanwhile, the circuit monitoring system improves the utilization rate of hardware resources and the convenience of circuit management.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a line monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another line monitoring system according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a cable tapping box according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
Fig. 1 is a schematic structural diagram of a line monitoring system according to an embodiment of the present invention, as shown in fig. 1:
the line monitoring system 10 includes at least two groups of monitoring units 100, and the number of the monitoring units 100 is greater than or equal to the number of sub-lines 200 included in a bus to be monitored, where the bus to be monitored includes at least two groups of sub-lines 200.
The monitoring unit 100 includes a negative control terminal device 110 and a transformer 120, and the sub-line 200 is disposed in series in the negative control terminal device 110 and the transformer 120.
The line monitoring system 10 may be configured to detect information about current, voltage, power and electric quantity of the sub-line 200, and perform data statistics comparison on the information about current, voltage, power and electric quantity of different sub-lines 200, and analyze and feed back abnormal conditions of the sub-line 200 according to the result of the data comparison.
The negative control terminal device 110 may be a device for detecting and controlling a line state; the transformer 120 may be a device that scales the ac voltage and/or current down to be directly measurable with a meter. The negative control terminal device 110 and the mutual inductor 120 form the monitoring unit 100, and the negative control terminal device 110 and the mutual inductor 120 are arranged on the sub-line 200 in series, so that the sub-line 200 has the functions of detection and protection.
The bus may be a bus line (not shown in the figure) in the power supply system, where the bus line may perform outgoing line grouping, and the line after outgoing line grouping is the sub-line 200.
The line monitoring system 10 includes at least two groups of monitoring units 100, and after the busbar lines are grouped and outgoing, at least one group of monitoring units 100 is disposed on each group of sub-lines 200, so as to monitor each group of sub-lines 200.
In the line monitoring system 10, the bus to be monitored includes three groups of sub-lines 200, the transformer 120 is electrically connected with the negative control terminal device 110 to form the monitoring unit 100, and a group of monitoring units 100 are disposed on each group of sub-lines 200. The outgoing line end of each group of sub-lines 200 is sequentially connected with a group of transformers 120 and a group of negative control terminal equipment 110, and detects information such as current, voltage, power and the like of the sub-lines 200, and simultaneously records real-time electric energy corresponding to the sub-lines 200.
According to the embodiment of the invention, the monitoring unit 100 is arranged on each group of sub-circuits 200 in the power supply system, so that the information such as the current, voltage, power and electric quantity information of each group of sub-circuits 200 is monitored in real time, the operation conditions of the sub-circuits 200 and the sub-circuits 200 are conveniently analyzed, the problem of low efficiency of manual line loss investigation in the prior art is solved, and the manual check quantity is reduced. Meanwhile, the line monitoring system 10 improves the hardware resource utilization and the convenience of line loss management.
Optionally, with continued reference to fig. 1, the monitoring units 100 are in one-to-one correspondence and electrically connected with the sub-lines 200.
Each group of monitoring units 100 is electrically connected with the sub-line 200 correspondingly, and is used for monitoring the operation condition of the sub-line 200 one by one.
Specifically, the transformer 120 in each group of monitoring units 100 is electrically connected with the negative control terminal device 110 to form the monitoring unit 100, and the outlet end of the corresponding sub-line 200 is connected with the monitoring unit 100 in series. A group of monitoring units 100 are arranged on a group of sub-lines 200, so that real-time monitoring of the sub-lines 200 is ensured.
The invention ensures that each group of sub-circuits 200 is monitored by limiting the monitoring units 100 on the sub-circuits 200, improves the convenience of line loss investigation and reduces the manual check amount.
Optionally, with continued reference to fig. 1, the line monitoring system 10 further includes a shunt switch 300;
the shunt switches 300 are disposed in series between the bus to be monitored and the sub-lines 200, and are used for splitting the bus to be monitored into at least two groups of sub-lines 200, and the number of the shunt switches 300 is the same as the number of the sub-lines 200.
Wherein, the busbar lines are grouped to be outgoing lines through the shunt switch 300 to form a plurality of groups of sub-lines 200, and each group of sub-lines 200 is serially provided with one shunt switch 300.
Specifically, the buses in the power supply system are grouped to be outgoing lines through the shunt switch 300 to form a plurality of groups of sub-lines 200, and the outgoing line node ends of the sub-lines 200 on the shunt switch 300 are connected with the monitoring unit 100 to realize operation monitoring of each group of sub-lines 200. By arranging the shunt switch 300, the connection relation between the bus and the sub-line 200 is clarified, the detection accuracy of the line monitoring system 10 is improved, and analysis and comparison of sub-line 200 data in the line monitoring system 10 are facilitated.
Optionally, with continued reference to fig. 1, the bus to be monitored includes three sets of sub-lines 200;
the line monitoring system 10 includes three sets of monitoring units 100.
The three groups of monitoring units 100 include three groups of transformers 120 and three groups of negative control terminal devices 110, and each group of transformers 120 is electrically connected with one group of negative control terminal devices 110.
For example, the line monitoring system 10 may be applied in a three-phase circuit in which each phase line is a set of sub-lines 200, i.e. in which three sets of sub-lines 200 are included. The outlet ends of the sub-circuits 200 of each three-phase circuit are connected with a group of monitoring units 100, namely, a group of mutual inductors 120 and a group of negative control terminal equipment 110, and three groups of mutual inductors 120 and three groups of negative control terminal equipment 110 are arranged together to form the monitoring of each group of sub-circuits 200 in the three-phase circuit.
By arranging the monitoring units 100 on the sub-circuits 200 of the three-phase circuit, the operation condition of each group of sub-circuits 200 is monitored in real time, and whether the problems of three-phase unbalance, unqualified voltage and the like exist or not is judged by comparing and analyzing the operation data of the sub-circuits 200 in the three-phase circuit, so that the unsafe and inaccurate performance of manual measurement are avoided.
It should be noted that, in the embodiment of the present invention, the line monitoring system may be applied to a three-phase circuit for example, and it is understood that the line monitoring system may also be applied to a two-phase circuit or other circuits that need to decompose a bus into multiple groups of sub-circuits, which are not illustrated here.
Optionally, fig. 2 is a schematic structural diagram of another line monitoring system according to an embodiment of the present invention, and is shown in conjunction with fig. 1 and fig. 2:
the line monitoring system 10 further includes a data processing unit 400;
the data processing unit 400 is electrically connected to the monitoring unit 100, and is configured to perform statistical analysis on the electrical energy data in the sub-line 200 acquired by the monitoring unit 100.
The power data may include, among other things, the voltage, current, power of the line and the real-time power of the line.
The data processing unit 400 may be configured to perform statistical analysis and comparison on the detection data of each group of monitoring units 100, and may also calculate a loss value of the line and a line load parameter. Meanwhile, the data processing unit 400 can also draw a graph of the power supply quantity, the power receiving quantity and the line loss of the line through the collected data, so that the running conditions of the same line and/or different lines can be conveniently compared.
In the line monitoring system 10, the monitoring unit 100 is electrically connected to the data processing unit 400, the monitoring unit 100 obtains the voltage, current, power of the sub-line 200 and real-time power of the sub-line 200, and transmits the power data to the data processing unit 400, and the data processing unit 400 performs statistical analysis and comparison on the power data of the sub-line 200.
By adding the data processing unit 400 in the line monitoring system 10, the detection data of the sub-line 200 is subjected to statistical analysis comparison, so that the abnormal sub-line 200 is rapidly positioned, the line investigation range is reduced, and the unsafe and inaccurate performance of manual investigation are avoided.
Optionally, the data processing unit 400 includes an alarm subunit (not shown in the figure);
the alarm subunit is configured to feed back the information of the sub-line 200.
Wherein, the alarm subunit may be configured to send out abnormal information corresponding to the sub-line 200 to a power supply manager when the sub-line 200 is abnormally operated.
The sub-line 200 information may include, among other things, the location of the abnormal sub-line 200, the power supply amount, the power reception amount, and the line loss data of the abnormal sub-line 200.
By way of example, with continued reference to fig. 1 and 2, the line monitoring system 10 monitors as follows:
in the line monitoring system 10, the monitoring unit 100 acquires the voltage, current, power and real-time electric energy of the sub-line 200, and transmits the sub-line 200 data to the data processing unit 400, and the data processing unit 400 performs statistical analysis and comparison on the electric energy data to calculate a sub-line loss value. When the loss value of the sub-line is greater than the set standard threshold, the alarm sub-unit judges that the corresponding sub-line 200 is an abnormal line section and sends out the abnormal sub-line position of the abnormal sub-line, the power supply quantity of the abnormal sub-line, the power receiving quantity and the line loss data to the power supply manager. By arranging the alarm subunit in the data processing unit 400, the abnormal condition of the line can be fed back to the power supply manager in time, and the line checking efficiency is improved.
In the line monitoring system 10, the load condition between the sub-lines 200 may also be monitored, for example, the negative control terminal device 110 in the monitoring unit 100 is set to acquire the electrical energy data of the sub-lines 200 every 15 minutes, the monitoring unit 100 transmits the monitored data of the sub-lines 200 to the data processing unit 400, and the data processing unit 400 calculates the load condition of the sub-lines 200 respectively. The power supply amount, the power receiving amount, and the line loss graph of the sub-line 200 are compared and analyzed. When the total load distribution of the sub-line 200 in the power supply system is not matched, the alarm sub-unit sends out sub-line 200 information to a power supply manager, and the power supply manager timely checks and processes the reasons.
Illustratively, the line anomaly cause may be addressed in the line monitoring system 10 by:
in the line monitoring system 10, the problems of inaccurate metering of the distribution transformer and the like can be judged by comparing the daily freezing and monthly freezing data of the connection line of the negative control terminal equipment 110 with the distribution data, and the line loss abnormality caused by the fact that the meter reading date is inconsistent due to the fact that the meter reading is not carried out by mistake can be analyzed.
In the line monitoring system 10, by inquiring the background load rate, whether the problems of heavy load, unqualified power factor and the like exist in each outgoing line section or not is accurately analyzed.
In the line monitoring system 10, the frozen electric quantity of the negative control terminal of each sub-line 200 can be compared with the frozen electric quantity of the user meter, so as to analyze whether the loss of the sub-line 200 is positive loss or negative loss, and further analyze the reason of the abnormal line loss. And whether the user changing relationship is incorrect, the new user is not established, the line is leaked, the user list is abnormal or not can be analyzed.
In the embodiment of the invention, the monitoring unit 100 is arranged on the sub-line 200 to detect the electric energy data, and the data processing unit 400 is used for rapidly and accurately judging the abnormal line, so that the abnormal investigation range of power supply management personnel is reduced, and the maintenance efficiency of the power supply system is improved. Meanwhile, power supply management personnel can conduct timely investigation on abnormal lines, and the initiative of line loss reduction is improved.
Fig. 3 is a schematic structural diagram of a cable tapping-off box according to an embodiment of the present invention, and with reference to fig. 1, fig. 2 and fig. 3, the cable tapping-off box according to an embodiment of the present invention includes a line monitoring system 10; the cable tapping box further comprises a tapping box body 11, and the line monitoring system 10 is arranged in the tapping box body 11.
The cable tapping box can be used for tapping a cable line in a power supply system and monitoring equipment of the running condition of the line in real time. A line monitoring system 10 is arranged in the tapping-off box body 11 to detect and monitor the line in the cable tapping-off box in real time.
Specifically, the bus in the power supply system is separated into sub-lines 200 through the tap box body 11, and the line monitoring system 10 is arranged in the tap box body 11, that is, the monitoring units 100 are arranged on each sub-line 200 in the cable tap box. The operating condition of the sub-line 200 in the cable tap box is monitored in real time.
By arranging the cable tapping box, the line monitoring system 10 is arranged in the cable tapping box, the running condition of the lines in the cable tapping box is monitored in real time, and feedback is timely carried out when the corresponding lines are abnormal, so that the accuracy of line loss detection and the stability of a power supply system are improved.
Optionally, with continued reference to fig. 3, the cable breakout box includes a first slot 111 and a second slot 121;
the transformer 120 is disposed in the first slot 111;
the negative control terminal device 110 is disposed in the second slot 121.
The first slot 111 is used for placing a transformer 120; the second slot 121 is used for placing the negative control terminal device 110.
Specifically, a first slot 111 and a second slot 121 are provided in the cable breakout box
Illustratively, the first slot 111 is disposed at the bottom of the cable breakout and the second slot 121 is disposed at the top of the cable breakout, taking into account the weight of the transformer 120 and the balance and stability of the cable breakout. The mutual inductor 120 is arranged in the first slot position 111, the negative control terminal equipment 110 is arranged in the second slot position 121, and each group of mutual inductors 120 is connected with one group of negative control terminal equipment 110 to form one group of monitoring units 100. Each group of monitoring units 100 is connected to a group of sub-lines 200.
By providing slots in the cable tap box for placement of the transformer 120 and the negative control terminal device 110, the problem of insufficient spatial location in a conventional cable tap box and inconvenience in the addition of the line monitoring system 10 is avoided.
Alternatively, with continued reference to FIG. 3, the first slot 111 and the second slot 121 are disposed on opposite sides of the cable tap box.
Illustratively, the first slot 111 is disposed at the bottom of the cable breakout and the second slot 121 is disposed at the top of the cable breakout, taking into account the weight of the transformer 120 and the balance and stability of the cable breakout. The mutual inductor 120 is arranged in the first slot position 111, the negative control terminal equipment 110 is arranged in the second slot position 121, and each group of mutual inductors 120 is connected with one group of negative control terminal equipment 110 to form one group of monitoring units 100. Each group of monitoring units 100 is connected to a group of sub-lines 200. The monitoring function of the circuit and the balance stability of the placement of the cable tapping box are guaranteed.
Optionally, with continued reference to fig. 3, the cable breakout box further includes a junction box 113 therein;
the circuit of the negative control terminal device 110 is arranged in the junction box 113, and is electrically connected with the transformer 120 through the junction box 113.
The negative control terminal equipment 110 is arranged in the junction box 113 in a line mode, so that the negative control terminal equipment 110 is conveniently connected with the transformer 120 in an installation mode.
Illustratively, a first slot 111 is provided in the bottom of the cable breakout, and a transformer 120 is disposed in the first slot 111. A second slot 121 is arranged at the top of the cable tapping box, and a negative control terminal device 110 is arranged in the second slot 121. A junction box 113 is disposed at the lower end of the second slot 121, and a negative control terminal line is disposed in the junction box 113, and the negative control terminal device 110 is electrically connected with the transformer 120 through the junction box 113 to form the monitoring unit 100. By providing the junction box 113 in the cable breakout enclosure, connection of the cable breakout enclosure to the line monitoring system 10 is facilitated. The operation mode of the circuit in the prior art does not need to be changed, and the installation efficiency is improved.
According to the embodiment of the invention, the monitoring unit is arranged on each group of sub-circuits in the power supply system, so that the information such as the current, voltage, power and electric quantity information of each group of sub-circuits is monitored in real time, the operation condition of each outgoing line is conveniently analyzed and monitored, the problem of low manual line loss investigation efficiency in the prior art is solved, and the manual check quantity is reduced. Meanwhile, the line monitoring system improves the utilization rate of hardware resources and the convenience of line loss management.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The line monitoring system is characterized by comprising at least two groups of monitoring units, wherein the number of the monitoring units is greater than or equal to the number of sub-lines contained in a bus to be monitored, and the bus to be monitored contains at least two groups of sub-lines;
the monitoring unit comprises a negative control terminal device and a mutual inductor, and the sub-lines are arranged in the negative control terminal device and the mutual inductor in series.
2. The line monitoring system of claim 1, wherein the monitoring units are in one-to-one correspondence and electrically connected to the sub-lines.
3. The line monitoring system of claim 1, further comprising a shunt switch;
the shunt switches are arranged between the bus to be monitored and the sub-lines in series and are used for decomposing the bus to be monitored into at least two groups of sub-lines, and the number of the shunt switches is the same as that of the sub-lines.
4. The line monitoring system of claim 1, wherein the bus to be monitored includes three sets of the sub-lines
The line monitoring system comprises three groups of monitoring units.
5. The line monitoring system of claim 1, further comprising a data processing unit;
the data processing unit is electrically connected with the monitoring unit and is used for carrying out statistical analysis on the electric energy data in the sub-line acquired by the monitoring unit.
6. The line monitoring system of claim 5, wherein the data processing unit comprises an alarm subunit;
the alarm subunit is used for feeding back the information of the sub-line.
7. A cable closure comprising the line monitoring system of any one of claims 1-6;
the cable tapping box further comprises a tapping box body, and the line monitoring system is arranged in the tapping box body.
8. The cable breakout box of claim 7, wherein the cable breakout box comprises a first slot and a second slot;
the mutual inductor is arranged in the first groove;
the negative control terminal device is arranged in the second slot position.
9. The cable breakout box of claim 8, wherein the first slot and the second slot are disposed on opposite sides of the cable breakout box.
10. The cable breakout box of claim 7, further comprising a junction box therein;
the circuit of the negative control terminal equipment is arranged in the junction box and is electrically connected with the transformer through the junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211630913.2A CN116008696A (en) | 2022-12-19 | 2022-12-19 | Line monitoring system and cable tapping box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211630913.2A CN116008696A (en) | 2022-12-19 | 2022-12-19 | Line monitoring system and cable tapping box |
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| CN116008696A true CN116008696A (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211630913.2A Pending CN116008696A (en) | 2022-12-19 | 2022-12-19 | Line monitoring system and cable tapping box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116229378A (en) * | 2023-05-09 | 2023-06-06 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
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2022
- 2022-12-19 CN CN202211630913.2A patent/CN116008696A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116229378A (en) * | 2023-05-09 | 2023-06-06 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
| CN116229378B (en) * | 2023-05-09 | 2023-08-25 | 盛锋电力科技有限公司 | Abnormal monitoring and early warning method for SMC cable tapping box |
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