High-voltage cable circulation online monitoring and analyzing device

Abstract

The utility model relates to the technical field of current monitoring, in particular to a high-voltage cable circulating current on-line monitoring and analyzing device which is provided with a shell, a touch screen, a power adapter, a bus circuit board, a current sampling board and an opening and closing current transformer. The bus circuit board is connected with at least one current sampling board, the current sampling board is connected with at least one opening and closing current transformer, and the opening and closing current transformer is installed on outgoing lines of an armor layer and a shielding layer of a to-be-monitored single-core cable. A to-be-monitored single-core cable is monitored by opening and closing the current transformer, monitored current is converted into digital signals through the current sampling board and transmitted to the bus circuit board, the bus circuit board stores and analyzes the digital signals and displays the digital signals to a user through the touch screen, and therefore current monitoring of the to-be-monitored single-core cable is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to current monitoring technical field, concretely relates to a high voltage cable circulating current on -line monitoring analysis device. BACKGROUND

[0002] The existing single core cable outer sheath ground current test, including single core cable, single core high voltage cable armoring layer lead -out wire, single core high voltage cable shielding layer lead -out wire, clamp ammeter, single core high voltage cable armoring layer lead -out wire and single core high voltage cable shielding layer lead -out wire are by a reliable ground, clamp ammeter is independent instrument, is used for nondestructive current measurement. Clamp ammeter can only show the test value of the present, cannot store, analyze data, does not have remote control and data over limit alarm function. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model discloses a high voltage cable circulating current on -line monitoring analysis device to overcome the problems in the prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The utility model provides a high voltage cable circulating current on -line monitoring analysis device, include, casing, touch -sensitive screen, power adapter, bus circuit board, current sampling board and open -close current transformer,

[0006] The touch -sensitive screen, the power adapter, the bus circuit board and the current sampling board are arranged in the casing,

[0007] The bus circuit board is connected with the touch -sensitive screen and the power adapter respectively, the bus circuit board is connected with at least one current sampling board, the current sampling board is connected with at least one open -close current transformer, and the open -close current transformer is installed on the armoring layer and the shielding layer lead -out wire of the single core cable to be monitored.

[0008] Further, the device described above, the bus circuit board is arranged with: power adapter interface, first power bus, second power bus, communication bus, MCU, data storage circuit, isolation communication circuit and at least one connector jack end,

[0009] The first power bus and the second power bus are connected with the power adapter interface respectively through the power conversion circuit, the power adapter interface is connected with the power adapter, the first power bus is connected with the MCU, the MCU is connected with the communication bus through the isolation communication circuit, the data storage circuit is connected with the MCU, the MCU is connected with the connector jack end, and the second power bus and the communication bus are connected with the touch -sensitive screen respectively.

[0010] Further, the above-mentioned device, the current sampling board is arranged with: connector pin end, AD conversion circuit, signal filtering circuit, I / V conversion circuit and at least one group of current input interface;

[0011] The connector pin end is connected with the connector jack end, the AD conversion circuit is connected with the connector pin end, the signal filtering circuit is connected with the AD conversion circuit, the I / V conversion circuit is connected with the signal filtering circuit, and the I / V conversion circuit is connected with the open-close current transformer through the current input interface.

[0012] Further, the above-mentioned device, the bus circuit board is further arranged with: alarm input contact point;

[0013] The MCU is connected with the alarm through the alarm input contact point.

[0014] Further, the above-mentioned device, the shell is an outdoor waterproof cabinet.

[0015] Further, the above-mentioned device, the touch screen is an HMI 7-inch man-machine interaction touch screen.

[0016] Further, the above-mentioned device, the open-close current transformer is a waterproof open-close current transformer.

[0017] The utility model discloses the beneficial effects are:

[0018] 1, can continuously monitor single core cable outer sheath ground current on line, need not manual operation;

[0019] 2, real-time data record, can view historical data at any time;

[0020] 3, can monitor multiple current simultaneously, and it is convenient to compare the current change;

[0021] 4, multiple data analysis mode, can directly compare and analyze the current horizontally, also can compare and analyze the current ratio of different positions;

[0022] 5, real-time alarm, can find the operation failure of single core cable in first time and send alarm, avoid the expansion of failure;

[0023] 6, multiple alarm mode, can alarm through sound and light, short message, telephone and other modes;

[0024] 7, high-low voltage isolation, no electric shock risk;

[0025] 8, full waterproof design, can satisfy normal work under the severe weather condition of scene. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0027] Figure 1 is a structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0028] Figure 2 is a structural diagram of another embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0029] Figure 3 is an I / V conversion circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0030] Figure 4 is a signal filtering circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0031] Figure 5 is an AD conversion circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0032] Figure 6 is an MCU circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0033] Figure 7 is a data storage circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0034] Figure 8 is an isolation communication circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application;

[0035] Figure 9 is a power conversion circuit structural diagram of one embodiment of the high-voltage cable circulating current online monitoring and analyzing device of the present application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0037] Figure 1 It is a structural diagram provided by one embodiment of the utility model of high-voltage cable circulating flow on-line monitoring and analyzing device, as shown in the figure, the embodiment has a shell 1, a touch screen 2, a power adapter 3, a bus circuit board 4, a current sampling board 5 and an open-close current transformer 6. Figure 1

[0038] The touch screen 2, the power adapter 3, the bus circuit board 4 and the current sampling board 5 are arranged in the shell 1.

[0039] The bus circuit board 4 is connected with the touch screen 2 and the power adapter 3 respectively, the bus circuit board 4 is connected with at least one current sampling board 5, the current sampling board 5 is connected with at least one open-close current transformer 6, and the open-close current transformer 6 is installed on the armored layer and the shield layer lead-out wire of the single-core cable to be monitored.

[0040] It can be understood that the touch screen 2 is responsible for data display, analysis, storage and the like; the bus circuit board 4 is responsible for power conversion and communication bridging; the open-close current transformer 6 is responsible for lossless conversion of primary large current into secondary small current; the current sampling board 5 is responsible for real-time current data acquisition and conversion; the power adapter 3 is responsible for providing overall power supply; and the shell 1 is responsible for providing mounting space and protection for the above-mentioned parts.

[0041] It should be noted that the device in the embodiment can be installed on a support or a wall near the single-core cable to be monitored.

[0042] Preferably, the bus circuit board 4 is arranged with a power adapter 3 interface, a first power bus, a second power bus, a communication bus, an MCU, a data storage circuit, an isolation communication circuit and at least one connector jack end.

[0043] The first power bus and the second power bus are connected with the power adapter 3 interface through a power conversion circuit respectively, the power adapter 3 interface is connected with the power adapter 3, the first power bus is connected with the MCU, the MCU is connected with the communication bus through the isolation communication circuit, the data storage circuit is connected with the MCU, the MCU is connected with the connector jack end, and the second power bus and the communication bus are connected with the touch screen 2 respectively.

[0044] ​Preferably, the current sampling board 5 is provided with: connector pin terminals, AD conversion circuit, signal filtering circuit, I / V conversion circuit and at least one set of current input interfaces;

[0045] The connector pin end is connected to the connector socket end, the AD conversion circuit is connected to the connector pin end, the signal filtering circuit is connected to the AD conversion circuit, the I / V conversion circuit is connected to the signal filtering circuit, and the I / V conversion circuit is connected to the switching current transformer 6 through the current input interface.

[0046] Preferably, the bus circuit board 4 is also provided with: alarm output port contacts;

[0047] The MCU connects to the alarm via the alarm output port contacts.

[0048] Preferably, the housing 1 is an outdoor waterproof enclosure.

[0049] Preferably, the touchscreen 2 is a 7-inch HMI human-computer interaction touchscreen 2.

[0050] Preferably, the switching current transformer 6 is a waterproof switching current transformer 6.

[0051] It is understandable that, such as Figures 2-9 As shown, the secondary leads of the switchable current transformer are connected to the current input terminal 5 of the current sampling board; the secondary current signal of the switchable current transformer is converted into a voltage signal by the I / V conversion circuit; the converted voltage signal enters the AD conversion circuit after passing through the signal filtering circuit; the AD conversion circuit converts the input analog signal into a digital signal; the MCU reads the digital signal output by the AD conversion circuit and calculates the value of the primary current; the data storage circuit is responsible for storing the calculation parameters such as the correction coefficient and the current transformer ratio required by the MCU; the MCU transmits the calculated value of the primary current to the isolated communication circuit in the form of a standard communication protocol; the HMI reads the data from the communication bus through the standard communication protocol and performs display, storage, analysis, alarm and other processing tasks.

[0052] In some optional embodiments, a communication module is also included. The communication module is mounted on the bus circuit board 4 and connected to the MCU via the communication bus, so that users can directly obtain the current monitoring data of the single-core cable to be monitored in real time through remote communication.

[0053] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0054] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for the purpose of description and should not be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, "a plurality of" means at least two.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A high voltage cable circulating current on-line monitoring and analysis device, characterized by, The shell, the touch screen, the power adapter, the bus circuit board, the current sampling board and the open-close current transformer are included. The touch screen, the power adapter, the bus circuit board and the current sampling board are arranged in the shell. The bus circuit board is connected with the touch screen and the power adapter respectively, the bus circuit board is connected with at least one current sampling board, the current sampling board is connected with at least one open-close current transformer, and the open-close current transformer is installed on the armored layer and the shield layer lead-out wire of the single-core cable to be monitored.

2. The apparatus of claim 1, wherein, The bus circuit board is provided with a power adapter interface, a first power bus, a second power bus, a communication bus, an MCU, a data storage circuit, an isolation communication circuit and at least one connector jack end. The first power bus and the second power bus are connected with the power adapter interface through a power conversion circuit respectively, the power adapter interface is connected with the power adapter, the first power bus is connected with the MCU, the MCU is connected with the communication bus through the isolation communication circuit, the data storage circuit is connected with the MCU, the MCU is connected with the connector jack end, and the second power bus and the communication bus are connected with the touch screen respectively.

3. The apparatus of claim 2, wherein, The current sampling board is provided with a connector pin end, an AD conversion circuit, a signal filtering circuit, an I / V conversion circuit and at least one group of current input interfaces. The connector pin end is connected with the connector jack end, the AD conversion circuit is connected with the connector pin end, the signal filtering circuit is connected with the AD conversion circuit, the I / V conversion circuit is connected with the signal filtering circuit, and the I / V conversion circuit is connected with the open-close current transformer through the current input interface.

4. The apparatus of claim 3, wherein, The bus circuit board is further provided with an alarm output contact point. The MCU is connected with an alarm through the alarm output contact point.

5. The apparatus of claim 4, wherein, The shell is an outdoor waterproof cabinet.

6. The apparatus of claim 5, wherein, The touch screen is an HMI 7-inch human-machine interaction touch screen.

7. The apparatus of claim 6, wherein, The open-close current transformer is a waterproof open-close current transformer.

Images