CN221746188U - Portable load control operation and maintenance detection device - Google Patents

Abstract

The utility model discloses a portable negative control operation and maintenance detection device, which relates to the field of electrical control cabinets and comprises a signal source and a detection terminal, wherein the signal source comprises a three-phase voltage source and a three-phase current source, and the detection terminal is in wireless connection with the three-phase voltage source and the three-phase current source; wherein the three-phase voltage source is configured to: the power distribution terminal is arranged at the power distribution end before power transmission and is used for providing adjustable three-phase voltage; the three-phase current source is configured to: the power distribution device is arranged at a power distribution end before power transmission and used for providing adjustable three-phase current; the portable negative control operation and maintenance detection device can accurately and efficiently detect dry nodes, check working states and analyze loop wiring of the negative control equipment, and check and store on-site detection results in real time, so that the working efficiency of the load control equipment in the processes of installation, debugging, operation and maintenance, monitoring and the like is greatly improved, and the portable negative control operation and maintenance detection device has good use prospects.

Description

Portable load control operation and maintenance detection device

Technical Field

The utility model relates to the field of power systems, in particular to a portable negative control operation and maintenance detection device.

Background

At present, related staff can install a load control management terminal for power users who install professional transformers and power enterprises in the power system construction process of China so as to improve the working efficiency of the electric staff and the management efficiency of the power system.

The negative control management terminal is not only required to be checked before the power system transmits power, but also is easy to have wiring errors in the actual operation process, so that data cannot be effectively collected, the circuit is influenced by external environment for a long time, the impedance is overlarge, power supply and other faults are influenced, the management of the negative control device is inconvenient, and therefore the negative control management terminal is required to be regularly operated, maintained and overhauled; in addition, after the negative control management terminal is installed or fails to be replaced, a power supply enterprise needs to establish archival data and update the user in the metering automation system, so that the consistency of a power supply line, a power consumption code, metering ammeter parameters, transformer parameters, negative control management terminal parameters and the like with the on-site work sheet record is ensured. However, the on-site operation and maintenance work record list has the defect of missing record information and can not timely file operation and maintenance data.

In operation, maintenance and overhaul, all phase indexes of field equipment are often tested through a universal meter, and data testing such as loop on-off, single-point detection voltage and current can be primarily performed, so that the detection efficiency is low, and the whole function of the negative control device equipment cannot be rapidly checked.

The prior art CN202121256057X discloses an automatic complete equipment fault detection device, a detection module is controlled by an operation module, the detection module is connected with detection equipment to detect various functions, and the automatic complete equipment fault detection device has an opening and closing control loop, an opening and closing signal acquisition loop, a voltage acquisition loop, a current acquisition loop, an energy storage test loop and an energy storage signal acquisition loop and performs full-function test on overhaul equipment.

The portable negative control operation and maintenance detector disclosed in the prior art CN202223024190X comprises a protective box and a detection unit, wherein a shunt release test interface, a tripping test interface, a remote signaling and pulse test interface are arranged on a panel of the detection unit, a power socket, a power shifting fork, a power button electric quantity display module and a bracket are arranged on a supporting plate, and the operation terminal is taken and placed through the cooperation of a sliding block, a top cap and a top cap pressure spring, so that the flexibility of field operation is improved.

The scheme can not complete the multifunctional detection of the equipment through one-time wiring, can not detect the working state, wiring and the like of the negative control equipment before power transmission, and can not timely archive field detection data.

Therefore, a portable operation and multifunctional negative control operation and maintenance detection device is required to accurately perform field detection and timely file the detection result in a complex field installation and debugging environment; therefore, we propose a portable negative control operation and maintenance detection device.

Disclosure of utility model

The utility model mainly aims to provide a portable negative control operation and maintenance detection device which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The portable negative control operation and maintenance detection device comprises a signal source and a detection terminal, wherein the signal source comprises a three-phase voltage source and a three-phase current source, and the detection terminal is in wireless connection with the three-phase voltage source and the three-phase current source;

Wherein the three-phase voltage source is configured to: the power distribution terminal is arranged at the power distribution end before power transmission and is used for providing adjustable three-phase voltage;

the three-phase current source is configured to: the power distribution device is arranged at a power distribution end before power transmission and used for providing adjustable three-phase current;

The detection terminal is configured to: the system is used for reading the monitoring data of the negative control device and the wireless synchronous acquisition signal source output data, analyzing the reading data and the wireless synchronous acquisition signal source output data, and judging whether the negative control device operates normally or not.

Preferably, the wireless synchronization of the detection terminal acquires output data of the signal source, wherein the output data comprise output voltages, current amplitudes and phases of the three-phase voltage source and the three-phase current source.

Preferably, the detection terminal judges whether the negative control device performs wiring judgment and analyzes the state of each node of the switch control loop when operating normally, and judges whether the power is cut off after the switch is measured when the power is cut off.

Preferably, the detection terminal is provided with an operation and maintenance APP, and the operation and maintenance APP is wirelessly connected with the detection terminal, acquires detection data and detection results of the detection terminal in real time, and displays, stores and derives the detection data and the detection results.

Preferably, the three-phase voltage source comprises a three-phase voltage source housing, a first control assembly and:

a first circuit board is arranged in the three-phase voltage source shell;

The first control component is arranged on the front end face of the three-phase voltage source shell;

The first interface component is arranged on the front end face of the three-phase voltage source shell;

The first control component and the first interface component are electrically connected with the first circuit board.

Preferably, the three-phase current source comprises a three-phase current source housing, a second control component and a second interface component:

a second circuit board is arranged in the three-phase current source shell;

the second control component is arranged on the front end face of the three-phase current source shell;

the second interface component is arranged on the front end face of the three-phase current source shell;

And the second control component and the second interface component are electrically connected with the second circuit board.

Preferably, the detection terminal comprises a detection terminal shell, an RS485 interface, a third control component and other interface components:

a third circuit board is arranged in the detection terminal shell;

The RS485 interface is arranged on the side end face of the detection terminal shell, and the RS485 interface is connected to the front and back of the negative control device and the breaker switch to read the monitoring data of the negative control device;

The third control component is arranged on the front end face of the detection terminal shell;

the other interface components are arranged on the outer surface of the detection terminal shell;

And the third control assembly, the other interface assemblies and the RS485 interface are fixedly connected with the third circuit board.

Compared with the prior art, the portable negative control operation and maintenance detection device provided by the utility model has the following advantages that

The beneficial effects are that:

The portable negative control operation and maintenance detection device can accurately and efficiently detect the dry node, check the working state and analyze the wiring of a loop of the negative control equipment, and check and store the field detection result in real time, thereby greatly improving the working efficiency of the load control equipment in the processes of installation, debugging, operation and maintenance, monitoring and the like.

Secondly, the utility model discloses a portable negative control operation and maintenance detection device, wherein a signal source outputs three-phase voltage and current, the synchronism of measurement of a detection terminal is maintained through wireless communication, the detection terminal is connected with a circuit breaker switch through a voltage input measurement interface to judge whether the circuit breaker switch is powered off or not after power failure, the state of the circuit breaker switch is controlled, the equipment state is judged through a dry node, and data monitored by a negative control device are read through an RS485 interface, and the detection device is automatically analyzed to judge wiring; the method comprises the steps of accurately and efficiently detecting dry nodes, checking working states and analyzing loop wiring of the negative control equipment;

Thirdly, the utility model discloses a portable negative control operation and maintenance detection device, which can be connected with a detection terminal through an operation and maintenance APP on mobile equipment to view and store the on-site detection result in real time, thereby greatly improving the working efficiency of the load control equipment in the processes of installation, debugging, operation and maintenance, monitoring and the like, and having good use prospect.

Drawings

FIG. 1 is a system topology diagram of a portable negative control operation and maintenance detection device according to the present utility model;

FIG. 2 is a diagram showing a three-phase voltage source in a portable negative control operation and maintenance detection device according to the present utility model;

FIG. 3 is a diagram showing a three-phase current source in a portable negative control operation and maintenance detection device according to the present utility model;

Fig. 4 is a block diagram of a detection terminal in the portable negative control operation and maintenance detection device according to the present utility model.

In the figure: 1. operation and maintenance APP;

2. A three-phase voltage source; 201. displaying an interface switching key; 202. a display screen; 203. a voltage output interface A phase; 204. a voltage output interface B phase; 205. a voltage output interface C phase; 206. a voltage output interface N phase; 207. a power switch; 208. a voltage amplitude output adjusting knob; 209. a voltage phase output adjustment knob; 210. a wireless antenna interface; 211. a charging interface; 212. a circuit board fixing column; 213. fixing holes are embedded in the fixing columns; 214. a first circuit board; 215. a three-phase voltage source housing;

3. A three-phase current source; 301. displaying an interface switching key; 302. a display screen; 303. a current amplitude output adjusting knob; 304. current output interface phase a+; 305. b phase + of the current output interface; 306. current output interface C phase+; 308. a current phase output adjustment knob; 309. current output interface phase a-; 310. current output interface B phase-; 311. a current output interface C phase-; 312. a charging interface; 313. a power switch; 307. a wireless antenna interface; 314. a circuit board fixing column; 315. fixing holes are embedded in the fixing columns; 316. a second wiring board; 317. a three-phase current source housing;

4. Detecting a terminal; 401. a voltage input first interface; 402. a voltage input second interface; 403. a voltage input third interface; 404. a voltage input fourth interface; 405. a voltage input fifth interface; 406. a voltage input sixth interface; 407. a voltage input seventh interface; 408. a voltage input eighth interface; 409. a work indicator light; 410. a charge indicator light; 411. a power switch; 412. a display screen; 413. an RS485 interface; 414. a dry node detection interface; 415. a charging interface; 416. a storage interface; 417. a third wiring board; 418. detecting a terminal housing; 419. fixing holes are embedded in the fixing columns; 420. and fixing the column.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Example 1

The portable negative control operation and maintenance detection device comprises a signal source and a detection terminal 4, wherein the signal source comprises a three-phase voltage source 2 and a three-phase current source 3, and the detection terminal 4 is in wireless connection with the three-phase voltage source 2 and the three-phase current source 3;

Wherein the three-phase voltage source 2 is configured to: the power distribution terminal is arranged at the power distribution end before power transmission and is used for providing adjustable three-phase voltage;

The three-phase current source 3 is configured to: the power distribution device is arranged at a power distribution end before power transmission and used for providing adjustable three-phase current;

The detection terminal 4 is configured to: the system is used for reading the monitoring data of the negative control device and the wireless synchronous acquisition signal source output data, analyzing the reading data and the wireless synchronous acquisition signal source output data, and judging whether the negative control device operates normally or not.

The detection terminal 4 acquires signal source output data in a wireless synchronization manner, wherein the signal source output data comprises output voltages, current amplitudes and phases of the three-phase voltage source 2 and the three-phase current source 3.

The detection terminal 4 judges whether the negative control device performs wiring judgment and analyzes the state of each node of the switch control loop when operating normally, and judges whether the power is cut off after the switch is measured when the power is cut off.

The detection terminal 4 is provided with an operation and maintenance APP1, and the operation and maintenance APP1 is connected with the detection terminal 4 in a wireless mode, and detection data and detection results of the detection terminal are obtained in real time and displayed, stored and exported.

The operation and maintenance APP1 is in wireless connection with the detection terminal 4 by adopting the Bluetooth technology.

The three-phase voltage source 2 includes a three-phase voltage source housing 215, a control component No. one, and an interface component No. one:

a first circuit board 214 is installed inside the three-phase voltage source housing 215;

the first control assembly is mounted on the front face of the three-phase voltage source housing 215;

The interface component number one is mounted on the front face of the three-phase voltage source housing 215;

wherein, the first control component and the first interface component are electrically connected with the first circuit board 214.

As shown in fig. 2, the first control assembly includes a display interface switch button 201 and a display 202, a power switch 207, a voltage amplitude output adjustment knob 208, and a voltage phase output adjustment knob 209.

As shown in fig. 2, interface component number one includes a voltage output interface a phase 203, a voltage output interface B phase 204, a voltage output interface C phase 205, a voltage output interface N phase 206, a wireless antenna interface 210, and a charging interface 211.

The first wiring board 214 is fixed to the wiring board fixing post 212 by a screw and fixing post embedded fixing hole 213.

The three-phase current source 3 includes a three-phase current source housing 317, a No. two control components, and a No. two interface component:

a second wiring board 316 is mounted inside the three-phase current source housing 317;

the second control component is mounted on the front end face of the three-phase current source housing 317;

the second interface component is mounted on the front end face of the three-phase current source housing 317;

wherein, no. two control assembly and No. two interface assembly all are connected with No. two circuit boards 316 electricity.

As shown in fig. 3, the second control assembly includes a display interface switching key 301, a display screen 302, a current amplitude output adjustment knob 303, a current phase output adjustment knob 308, and a power switch 313.

As shown in fig. 3, the second interface assembly includes a current output interface a phase +304, a current output interface B phase +305, a current output interface C phase +306, a wireless antenna interface 307, a current output interface a phase-309, a current output interface B phase-310, a current output interface C phase-311, and a charging interface 312.

As shown in fig. 3, the second wiring board 316 is fixed to the wiring board fixing post 314 by a screw and fixing post embedded fixing hole 315.

The detection terminal 4 includes a detection terminal housing 418, an RS485 interface 413, a control component No. three, and other interface components:

a third wiring board 417 is mounted inside the detection terminal housing 418;

The RS485 interface 413 is arranged on the side end face of the detection terminal housing 418, and the RS485 interface 413 is connected to the front and back of the negative control device and the breaker switch to read the monitoring data of the negative control device;

the third control component is mounted on the front end face of the detection terminal housing 418;

other interface components are mounted on the exterior surface of the detection terminal housing 418;

wherein, no. three control assembly, other interface components and RS485 interface 413 all with No. three circuit board 417 fixed connection.

As shown in fig. 4, the third control assembly includes a work indicator lamp 409, a charge indicator lamp 410, a power switch 411, and a display screen 412.

As shown in fig. 4, the other interface components include a voltage input first interface 401, a voltage input second interface 402, a voltage input third interface 403, a voltage input fourth interface 404, a voltage input fifth interface 405, a voltage input sixth interface 406, a voltage input seventh interface 407, a voltage input eighth interface 408, a dry node detection interface 414, a charging interface 415, and a storage interface 416.

The voltage input first interface 401, the voltage input second interface 402, the voltage input third interface 403, the voltage input fourth interface 404, the voltage input fifth interface 405, the voltage input sixth interface 406, the voltage input seventh interface 407, the voltage input eighth interface 408, the working indicator 409, the charging indicator 410, the power switch 411 and the display screen 412 are installed on the front end face of the detection terminal housing 418;

The dry node detection interface 414 and the RS485 interface 413 are mounted on the side end face of the detection terminal housing 418, and the charging interface 415 and the storage interface 416 are mounted on the fixed end face of the detection terminal housing 418.

As shown in fig. 4, the third wiring board 417 is fixed to the wiring board fixing post 420 by a screw and fixing post embedded fixing hole 419.

The signal source and the detection terminal 4 are fixed on the bottom end of the shell through screws, the interface is fixedly connected to the circuit board, the shell is externally provided with an insulating shell with high waterproof grade, and the shell is sealed through a buckle at the edge.

Example 2

On the basis of example 1, this example also describes the following:

During detection, step 1: when power failure is detected, a signal source is connected to supply power for a line;

Step 2: the detection terminal 4 performs measurement, dry node detection and data reading, and synchronously acquires the output voltage and current data of the signal source;

step 3: the detection terminal 4 performs data analysis, and results are displayed and stored;

Step 4: the Bluetooth of the detection terminal 4 is connected with the operation and maintenance APP1, and the operation and maintenance APP1 synchronously displays and stores the detection result;

And 5, exporting the data stored in the detection terminal 4 through a TF card or directly exporting a detection report from the operation and maintenance APP1, and timely archiving the field detection result.

Example 3

On the basis of example 2, this example also describes the following:

and detecting whether the power is cut off after the power is cut off by using the portable negative control operation and maintenance detection device.

Before power transmission, 2 paths of three-phase voltage inputs of a detection terminal 4 are respectively connected to the front end and the rear end of a breaker switch, and no voltage exists through detection; the 3-phase voltage is input before switching by utilizing the power distribution of the signal source, the detection terminal 4 carries out wireless synchronous detection to determine whether a power transmission line and the switch are normal, further, the three-phase voltage output of the signal source is stopped, and whether the voltage before and after switching is normal or not and the switch has no fault is determined according to the synchronous detection data of the detection terminal 4;

the working state of the breaker switch is controlled by detecting 6 paths of branch voltages.

During normal power supply, the pre-switch measured voltage detected by the detection terminal 4 is consistent with the data output by the three-phase voltage source 2, and the line power supply is normal; otherwise, the power supply of the circuit is abnormal;

the measured voltage after the circuit breaker is switched and the measured voltage before the circuit breaker is switched, which are detected by the detection terminal 4, are consistent, and after the circuit breaker is powered off, the voltage is 0, and the normal operation of the switch is judged, otherwise, the switch may have faults.

Example 4

On the basis of example 3, this example also describes the following:

and detecting whether the negative control device operates normally or not by using the portable negative control operation and maintenance detection device.

Pre-power-transmission detection

The signal source is connected to the power distribution end, and three-phase voltage and three-phase current are input to the backward stage;

The RS485 interface 413 of the detection terminal 4 is connected to a negative control device, and the monitoring data of the negative control device is read through the RS485 interface 413;

The detection terminal 4 acquires the output voltage, current amplitude and phase of the three-phase voltage source 2 and the three-phase current source 3 in a wireless synchronization manner;

And comparing and analyzing the read data of the RS485 interface 413 with the synchronously acquired signal source data to judge whether the negative control device operates normally.

Live detection

The RS485 interface 413 of the detection terminal 4 is connected to a negative control device, and the monitoring data of the negative control device is read through the RS485 interface 413;

And analyzing the read data of the RS485 interface 413 to determine whether faults such as abnormal wiring and the like possibly exist.

Example 5

On the basis of example 4, this example also describes the following:

When power failure is detected, a signal source is connected to supply power; the detection terminal 4 is connected with devices such as remote signaling and the like through a dry node detection interface to identify whether the devices have faults.

And in normal power supply, the detection terminal 4 is directly utilized to carry out dry node detection.

Example 6

On the basis of example 5, this example also describes the following:

The detection terminal 4 is provided with a TF memory card, and the detection terminal 4 outputs data with synchronously acquired signal sources. The data are uniformly stored in the detection terminal 4 and can be exported through a TF memory card to archive detection records;

The detection terminal 4 can be connected with the mobile phone operation and maintenance APP1 through the built-in Bluetooth module, the detection data is uploaded to the operation and maintenance APP1, the operation and maintenance APP1 displays the detection results in various forms such as tables, phasor diagrams, wiring diagrams and the like, the detection data is checked in real time, the detection results are stored and exported in time, and the detection records are convenient to archive.

Example 7

On the basis of example 6, this example also describes the following:

the three-phase voltage source 2 and the three-phase current source 3 of the signal source are both provided with amplitude and phase output adjusting knobs, the starting output instructions sent by the detection terminal 4 are obtained at the same time through wireless communication, the synchronous starting output is realized, the output voltage and current can be adjusted through the output adjusting knobs, and the output size is controlled.

The signal source is provided with a display screen (202 display screen and 302 display screen), the output voltage or current can be directly displayed on the display screen in real time, and data viewing is performed through a display function switching key;

The detection terminal 4 is provided with a display screen 412, acquires and displays signal source output data through wireless communication, synchronously displays data measured and read by the detection terminal 4, stores detection results locally at any time, and can also directly check historical data at the detection terminal 4.

Example 8

On the basis of example 7, this example also describes the following:

The signal source is provided with an external wireless antenna interface, so that wireless communication signals can be enhanced by installing a wireless antenna; the detection terminal 4 can also be internally provided with a wireless antenna, so that the stability of signal source and transmission of the detection terminal 4 is ensured.

Example 9

On the basis of example 8, this example also describes the following:

The signal source and the detection terminal 4 are both internally provided with lithium batteries, and can be charged through a charging interface, so that the continuous and reliable moving operation of the device is ensured;

The power switch 411 of the detection terminal 4 controls the start and stop of the working power supply of the detection terminal 4, and the power switch 207 and the power switch 313 of the signal source control the start and stop of the working power supply of the signal source;

The detection terminal 4 works as an indicator lamp, the working condition is indicated through a flashing state after power is supplied, measurement is indicated during flashing, and normally-on indication does not start work;

The charging interface 415 of the detection terminal 4 adopts a common Type-C interface, and indicates the charging state through the charging indicator lamp 410; the charging indication of the signal source charging interface can be displayed by a charger with an indicator light.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and their equivalents.

Claims (7)

1. The portable negative control operation and maintenance detection device is characterized by comprising a signal source and a detection terminal (4), wherein the signal source comprises a three-phase voltage source (2) and a three-phase current source (3), and the detection terminal (4) is in wireless connection with the three-phase voltage source (2) and the three-phase current source (3);

Wherein the three-phase voltage source (2) is configured to: the power distribution terminal is arranged at the power distribution end before power transmission and is used for providing adjustable three-phase voltage;

the three-phase current source (3) is configured to: the power distribution device is arranged at a power distribution end before power transmission and used for providing adjustable three-phase current;

The detection terminal (4) is configured to: the system is used for reading the monitoring data of the negative control device and the wireless synchronous acquisition signal source output data, analyzing the reading data and the wireless synchronous acquisition signal source output data, and judging whether the negative control device operates normally or not.

2. The portable negative control operation and maintenance detection device according to claim 1, wherein: the detection terminal (4) acquires signal source output data in a wireless synchronization mode, wherein the signal source output data comprise output voltages, current amplitudes and phases of the three-phase voltage source (2) and the three-phase current source (3).

3. The portable negative control operation and maintenance detection device according to claim 1, wherein: the detection terminal (4) judges whether the negative control device normally operates, judges wiring and analyzes the states of all nodes of the switch control loop, and judges whether power is cut off after the switch is measured when power is cut off.

4. The portable negative control operation and maintenance detection device according to claim 1, wherein: the detection terminal (4) is provided with an operation and maintenance APP (1), the operation and maintenance APP (1) is connected with the detection terminal (4) in a wireless mode, detection data and detection results of the detection terminal are obtained in real time, and display, storage and derivation are performed.

5. The portable negative control operation and maintenance detection device according to claim 1, wherein: the three-phase voltage source (2) comprises:

A three-phase voltage source housing (215) in which a first wiring board (214) is installed;

a first control assembly mounted on a front face of the three-phase voltage source housing (215);

A first interface assembly mounted on a front face of a three-phase voltage source housing (215);

Wherein, no. one control assembly and No. one interface assembly all are connected with circuit board (214) electricity.

6. The portable negative control operation and maintenance detection device according to claim 1, wherein: the three-phase current source (3) comprises:

A three-phase current source housing (317) in which a second wiring board (316) is mounted;

A second control component which is installed on the front end surface of the three-phase current source housing (317);

a second interface assembly mounted on a front face of the three-phase current source housing (317);

And the second control component and the second interface component are electrically connected with the second circuit board (316).

7. The portable negative control operation and maintenance detection device according to claim 1, wherein: the detection terminal (4) includes:

a detection terminal housing (418) in which a third wiring board (417) is mounted;

The RS485 interface (413) is arranged on the side end face of the detection terminal shell (418), and is connected to the front and back of the negative control device and the breaker switch to read monitoring data of the negative control device;

A third control component which is installed on the front end surface of the detection terminal housing (418);

other interface components mounted on the outer surface of the detection terminal housing (418);

wherein, no. three control assembly, other interface subassembly and RS485 interface (413) all with No. three circuit board (417) fixed connection.