Remote, non-delayed current checking device and checking method

Abstract

The application discloses a kind of long-distance no-delay current collating device and collating method, including long-distance no-delay current collating device, the long-distance no-delay current collating device includes timing unit, measurement unit and communication unit, the measurement unit includes power supply side measurement module and user side measurement module.In the present application, without interfering with the normal operation of power distribution network, by using no-delay acquisition power supply side current data and user side current data and analysis, automatically realize long-distance no-delay intelligent collation, with safe and reliable measurement, real-time dynamic monitoring, timely feedback alarm advantage, effectively investigate individual user's electricity stealing behavior or line loss too big problem, reduce security risk, improve the power supply reliability of power distribution network.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a remote non-delay current checking device and checking method. BACKGROUND

[0002] The aging problem of power distribution network area transmission line and the derived line short circuit, ground fault and other conditions have always been the case. In terms of existing power distribution line fault maintenance technology, manual hidden trouble checking method is still adopted, especially as the current power distribution network load continues to increase, electricity stealing means is endless, so it is more time and energy consuming in power distribution network line electricity stealing checking. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a convenient and reliable remote non-delay current checking device and checking method.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme: a remote non-delay current checking device, comprising a timing unit, a measuring unit and a communication unit, the measuring unit comprises a power supply side measuring module and a user side measuring module, the timing unit is connected to the communication unit through the power supply side measuring module, forming a first branch, the timing unit is connected to the communication unit through the user side measuring module, forming a second branch, the first and second branches are connected to the power distribution network master station.

[0005] Further, the timing unit, power supply side measuring module and user side measuring module all adopt single-chip microcomputer of STM32 type, the communication unit adopts wireless transmission mode, and the timing unit is connected to the measuring unit and the communication unit at the same time.

[0006] Further, it further comprises a power supply unit for simultaneously supplying power to the timing unit, the measuring unit and the communication unit, and the power supply unit is built-in with a battery with parameters of ER26500 3.6V 6500mA / h.

[0007] Further, the power distribution network master station is provided with a lower computer, an upper computer and an alarm module, the first and second branches are connected to the lower computer through the communication unit, and the lower computer 501 is connected to the upper computer and the alarm module at the same time.

[0008] A checking method of a remote non-delay current checking device, comprising the following steps:

[0009] S1, set the sampling start time of the line current as t0, the sampling period as T, the timing unit respectively time the first and second branches and time, ensure that the sampling start time and the sampling period of the two branches coincide with the preset, and set each time node in the sampling period T as t01, t02, t03,..., t0n, maximize the non-delay sampling, and avoid time error;

[0010] S2, the power side measurement module transmits the power side current sampling data to the communication unit, sets the power side current sampling data collected by the first branch as I0, and the current data collected at each time node in the sampling period T corresponds to I01, I02, I03,..., I0n in turn;

[0011] S3, the user side measurement module transmits the user side current sampling data to the communication unit, sets the user side current sampling data collected by the second branch as I1, and the current data collected at each time node in the sampling period T corresponds to I11, I12, I13,..., I1n in turn;

[0012] S4, the communication unit transmits the time sampling data and the current sampling data measured by the first and second branches to the power distribution network master station respectively, the lower computer converts the collected analog quantity into digital quantity, and displays each data through the upper computer and analyzes and checks, that is, if I01+I02+I03+...+I0n=I11+I12+I13+...+I1n, theoretically, the user power consumption of the substation is normal, if I01+I02+I03+...+I0n>I11+I12+I13+...+I1n, further analysis is needed, if it does not exceed the preset deviation range, it is still theoretically judged that the user power consumption of the substation is normal, if it exceeds the preset deviation range, it is theoretically judged that the user power consumption of the substation is abnormal, and there is electricity stealing phenomenon, generally, the preset deviation range is 4%, when the electricity stealing phenomenon occurs, the alarm module issues a warning;

[0013] S5, when it is judged in S4 that there is electricity stealing phenomenon, further analysis is needed, that is, the user side current sampling data I11, I12, I13,..., I1n collected in S3 is checked with the data collected in the same period in the past year and in the past two months by the power distribution network master station, if the current sampling data I1n of a certain user is lower than the past sampling data and exceeds the preset difference range, it is judged that the user has electricity stealing phenomenon, if it does not exceed the preset difference range, it is judged that the line loss is too large, generally, the preset difference range is 50%.

[0014] The beneficial effects of the application are as follows:

[0015] In the present application, in the state of not interfering with the normal operation of the power distribution network, the power supply side current data and the user side current data are collected without delay and analyzed, the remote and delay-free intelligent checking is automatically realized, the safe and reliable measurement, the real-time dynamic monitoring, the timely feedback alarm are provided, the electricity stealing behavior of individual users or the problem of excessive line loss is effectively investigated, the safety hidden danger is reduced, and the power supply reliability of the power distribution network is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a flow framework schematic diagram of an embodiment of the present application.

[0017] The labels of components in the drawings are as follows: 1, timing unit; 2, measurement unit; 201, power supply side measurement module; 202, user side measurement module; 3, communication unit; 4, power supply unit; 5, power distribution network master station; 501, lower computer; 502, upper computer; 503, alarm module. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be noted that if there is a description of “first”, “second” and the like in the embodiments of the present application, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features.

[0019] Reference Figure 1 .

[0020] The present application provides a remote and delay-free current checking device, which comprises a timing unit 1, a measurement unit 2 and a communication unit 3, the measurement unit 2 comprises a power supply side measurement module 201 and a user side measurement module 202, the timing unit 1 is connected to the communication unit 3 via the power supply side measurement module 201, forming a first branch, the timing unit 1 is connected to the communication unit 3 via the user side measurement module 202, forming a second branch, and the first and second branches are connected to a power distribution network master station 5.

[0021] In the present application, in the state of not interfering with the normal operation of the power distribution network, the power supply side current data and the user side current data are collected without delay and analyzed, the remote and delay-free intelligent checking is automatically realized, the safe and reliable measurement, the real-time dynamic monitoring, the timely feedback alarm are provided, the electricity stealing behavior of individual users or the problem of excessive line loss is effectively investigated, the safety hidden danger is reduced, and the power supply reliability of the power distribution network is improved.

[0022] In an embodiment, the timing unit 1, the power supply side measurement module 201 and the user side measurement module 202 all adopt single-chip microcomputers of STM32 type, the communication unit 3 adopts a wireless transmission mode, and the timing unit 1 is simultaneously connected to the measurement unit 2 and the communication unit 3. In this way, the timing unit 1 plays a role of timing and time synchronization, synchronizes time sampling data to the measurement unit 2 and the communication unit 3, and ensures that the sampling period and the sampling time node of the entire comparison device are consistent when the comparison device is used.

[0023] In an embodiment, the timing unit 1, the measurement unit 2 and the communication unit 3 are simultaneously powered by a power supply unit 4, and the power supply unit 4 is internally provided with a battery with parameters of ER26500 3.6V 6500mA / h. In this way, the power supply unit 4 provides stable power supply for the comparison device, and ensures smooth current data collection.

[0024] In an embodiment, the power distribution network master station 5 is internally provided with a lower computer 501, an upper computer 502 and an alarm module 503, the first branch and the second branch are both connected to the lower computer 501 through the communication unit 3, and the lower computer 501 is simultaneously connected to the upper computer 502 and the alarm module 503. In this way, the communication unit 3 transmits the time sampling data and the current sampling data measured by the first branch and the second branch to the power distribution network master station 5, the lower computer 501 converts the collected analog quantity into digital quantity, displays each data through the upper computer 502 and performs analysis and comparison, and when electricity stealing occurs, the alarm module 503 issues a warning, realizing real-time dynamic monitoring and timely feedback alarm.

[0025] A comparison method of a long-distance non-delay current comparison device, comprising the following steps:

[0026] S1, the sampling start time of the line current is set as t0, and the sampling period is set as T, the timing unit 1 performs timing and time synchronization on the first branch and the second branch, respectively, to ensure that the sampling start time and the sampling period of the two branches are consistent with the preset, and each time node in the sampling period T is set as t01, t02, t03,..., t0n, to maximize non-delay sampling and avoid time error;

[0027] S2, the power supply side measurement module 201 transmits power supply side current sampling data to the communication unit 3, sets the power supply side current sampling data collected by the first branch as I0, and sets the current data collected at each time node in the sampling period T as I01, I02, I03,..., I0n in turn;

[0028] S3, the user side measurement module 202 transmits user side current sampling data to the communication unit 3, and sets the user side current sampling data collected by the second branch as I1, and the current data collected at each time node in the sampling period T correspond to I11, I12, I13,..., I1n in turn;

[0029] S4, the communication unit 3 transmits the time sampling data and the current sampling data measured by the first and second branches to the power distribution network master station 5, and the lower computer 501 converts the collected analog quantity into digital quantity, and displays each data and analyzes and checks through the upper computer 502, that is, if I01+I02+I03+...+I0n=I11+I12+I13+...+I1n, the user power consumption in the substation is normal in theory, if I01+I02+I03+...+I0n>I11+I12+I13+...+I1n, further analysis is needed, if it does not exceed the preset deviation range, it is still theoretically judged that the user power consumption in the substation is normal, if it exceeds the preset deviation range, it is theoretically judged that the user power consumption in the substation is abnormal, and there is electricity stealing phenomenon, and the general preset deviation range is 4%, when the electricity stealing phenomenon occurs, the alarm module 503 issues a warning;

[0030] S5, when it is judged in S4 that there is electricity stealing phenomenon, further analysis is needed, that is, the user side current sampling data I11, I12, I13,..., I1n collected in S3 is checked with the data collected by the power distribution network master station 5 in the same period of the previous year and in the past two months, if the current sampling data I1n of a certain user is lower than the previous sampling data and exceeds the preset difference range, it is judged that the user has electricity stealing phenomenon, if it does not exceed the preset difference range, it is judged that the line loss is too large, and the general preset difference range is 50%.

[0031] It should be understood that the examples and embodiments described herein are only for illustration and do not limit the present application, and those skilled in the art can make various modifications or changes according to it, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A long-distance, time-delay-free current verification device, characterized in that: It includes a timing unit, a measurement unit, and a communication unit. The measurement unit includes a power supply side measurement module and a user side measurement module. The timing unit is connected to the communication unit via the power supply side measurement module to form a first branch. The timing unit is connected to the communication unit via the user side measurement module to form a second branch. Both the first and second branches are connected to the distribution network master station. Long-distance, time-delay-free current verification steps: S1. Set the sampling start time of the line current to t0 and the sampling period to T. The timing unit performs timing and synchronization for the first and second branches respectively to ensure that the sampling start time and sampling period of the two branches match the preset time. The time nodes within the sampling period T are set as t01, t02, t03, ..., t0n to maximize the realization of zero-delay sampling and avoid time errors. S2. The power supply side measurement module transmits power supply side current sampling data to the communication unit, and sets the power supply side current sampling data collected by the first branch as I0. The current data collected at each time node within the sampling period T are sequentially I01, I02, I03, ..., I0n. S3. The user-side measurement module transmits user-side current sampling data to the communication unit, and sets the user-side current sampling data collected by the second branch as I1. The current data collected at each time node within the sampling period T are sequentially I11, I12, I13, ..., I1n. S4. The communication unit transmits the time sampling data and current sampling data obtained from the first and second branches to the distribution network master station for analysis and verification. That is, if I01+I02+I03+...+I0n=I11+I12+I13+...+I1n, then theoretically the power consumption of the users in the distribution area is normal. If I01+I02+I03+...+I0n>I11+I12+I13+...+I1n, further analysis is required. If it does not exceed the preset deviation range, then theoretically it is still judged that the power consumption of the users in the distribution area is normal. If it exceeds the preset deviation range, then theoretically it is judged that the power consumption of the users in the distribution area is abnormal and there is electricity theft. The preset deviation range is 4%. S5. When it is determined in S4 that electricity theft has occurred, further analysis is required, namely: the user-side current sampling data I1 collected in S3 is compared with the data collected by the main station of the distribution network in the same period of previous years and in the past two months. If the current sampling data of a certain user is lower than the previous sampling data and exceeds the preset difference range, it is determined that the user has electricity theft. If it does not exceed the preset difference range, it is determined that the line loss is too large. The preset difference range is 50%.

2. The long-distance, time-delay-free current verification device as described in claim 1, characterized in that: The timing unit, power supply side measurement module, and user side measurement module all use STM32 microcontrollers. The communication unit uses wireless transmission. The timing unit is connected to both the measurement unit and the communication unit.

3. The long-distance, time-delay-free current verification device as described in claim 1, characterized in that: It also includes a power supply unit that simultaneously powers the timing unit, the measurement unit, and the communication unit, the power supply unit having a built-in battery with parameters of ER26500 3.6V 6500mA / h.

4. The long-distance, time-delay-free current verification device as described in claim 1, characterized in that: The power distribution network main station is equipped with a lower-level machine, a higher-level machine, and an alarm module. The first and second branches are both connected to the lower-level machine via the communication unit. The lower-level machine is simultaneously connected to the higher-level machine and the alarm module. The lower-level machine converts the collected analog quantities into digital quantities and displays and analyzes the data through the higher-level machine. When electricity theft occurs, the alarm module issues a warning.

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