CN221746188U - A portable negative 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

A portable negative control operation and maintenance detection device

Technical Field

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

Background Art

At present, in the process of power system construction in my country, relevant staff will install load control management terminals for both power users who install professional transformers and power companies, in order to improve the work efficiency of power workers and the management efficiency of the power system.

The load control management terminal not only needs to be checked before the power system is delivered, but also prone to wiring errors during actual operation, resulting in ineffective data collection, and long-term influence of the external environment on the line resulting in excessive impedance affecting power supply, which brings inconvenience to the management of the load control device. Therefore, it is necessary to regularly perform operation and maintenance on the load control management terminal; in addition, after the load control management terminal is installed or replaced due to a fault, the power supply company needs to establish and update the user's archive information in the metering automation system to ensure that the power supply line, power consumption code, metering meter parameters, transformer parameters, load control management terminal parameters, etc. are consistent with the on-site work sheet records. However, there are errors and omissions in the on-site operation and maintenance work record sheet, and the operation and maintenance data cannot be archived in time.

During operation and maintenance, a multimeter is often used to test the indicators of each phase of the on-site equipment. Only preliminary tests of circuit continuity and single-point detection of voltage, current and other data can be performed. The detection efficiency is low, and it is also impossible to quickly check the overall function of the load control device.

The prior art CN202121256057X discloses an automated complete equipment fault detection device, which controls the detection module through an operation module. The detection module is connected to the detection equipment to detect various functions. It has a switching control circuit, a switching signal collection circuit, a voltage collection circuit, a current collection circuit, an energy storage test circuit and an energy storage signal collection circuit to perform full-function testing on the maintenance equipment.

The portable load control operation and maintenance detector disclosed in the prior art CN202223024190X includes a protective box and a detection unit. The panel of the detection unit is provided with a shunt release test interface, a trip test interface, a remote signal and a pulse test interface. The support plate is provided with a power socket, a power fork, a power button power display module and a bracket. Through the cooperation of a slider, a top cap and a top cap compression spring, the operation terminal can be taken and placed, thereby improving the flexibility of on-site operations.

The above solutions all have the problem that they cannot complete the multi-function detection of the equipment in one wiring, cannot detect the working status and wiring of the load control equipment before power supply, and cannot archive the on-site detection data in time.

Therefore, a portable, multifunctional negative control operation and maintenance detection device is needed to accurately perform on-site detection in an environment with complex on-site installation and debugging, and to archive the inspection results in a timely manner. To this end, we propose a portable negative control operation and maintenance detection device.

Utility Model Content

The main purpose of the utility model is to provide a portable load 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 solution adopted by the utility model is:

A portable load control operation and maintenance detection device, comprising 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 wirelessly connected to the three-phase voltage source and the three-phase current source;

Wherein, the three-phase voltage source is configured as follows: to be installed at the power distribution end before power transmission, to provide an adjustable three-phase voltage;

The three-phase current source is configured to be installed at the power distribution end before power transmission to provide an adjustable three-phase current;

The detection terminal is configured to read the monitoring data of the load control device and wirelessly and synchronously obtain the output data of the signal source, analyze the read data and the output data of the signal source, and determine whether the load control device is operating normally.

Preferably, the detection terminal wirelessly and synchronously acquires signal source output data including output voltage, current amplitude and phase of a three-phase voltage source and a three-phase current source.

Preferably, the detection terminal performs wiring identification and analyzes the status of each node of the switch control circuit when determining whether the load control device is operating normally, and determines whether there is a power outage after measuring the switch when the power is off.

Preferably, the detection terminal is equipped with an operation and maintenance APP, which is wirelessly connected to the detection terminal to obtain the detection terminal inspection data and inspection results in real time for display, storage and export.

Preferably, the three-phase voltage source comprises a three-phase voltage source housing, a control component No. 1 and:

A circuit board No. 1 is installed inside the housing of the three-phase voltage source;

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

The No. 1 interface assembly is mounted on the front face of the three-phase voltage source housing;

Wherein, the No. 1 control component and the No. 1 interface component are both electrically connected to the No. 1 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 No. 2 circuit board is installed inside the housing of the three-phase current source;

The second control assembly is mounted on the front face of the three-phase current source housing;

The second interface assembly is mounted on the front face of the three-phase current source housing;

Wherein, the No. 2 control component and the No. 2 interface component are both electrically connected to the No. 2 circuit board.

Preferably, the detection terminal includes a detection terminal housing, an RS485 interface, a No. 3 control component and other interface components:

A No. 3 circuit board is installed inside the detection terminal housing;

The RS485 interface is installed on the side surface of the detection terminal housing. The RS485 interface is connected to the load control device and the circuit breaker switch to read the monitoring data of the load control device;

The third control assembly is installed on the front face of the detection terminal housing;

Other interface components are mounted on the outer surface of the detection terminal housing;

Among them, the No. 3 control component, other interface components and RS485 interface are all fixedly connected to the No. 3 circuit board.

Compared with the prior art, the portable load control operation and maintenance detection device of the utility model has the following features:

Beneficial effects:

First, the utility model records a portable load control operation and maintenance detection device, which can accurately and efficiently perform dry node detection, working status inspection, loop wiring analysis on the load control equipment, and view and store the on-site detection results in real time, greatly improving the work efficiency during the installation, debugging, operation and maintenance, and monitoring of the load control equipment.

Second, the utility model records a portable load control operation and maintenance detection device, in which the signal source outputs three-phase voltage and current, and maintains and detects the synchronization of terminal measurement through wireless communication. The detection terminal is connected through the voltage input measurement interface to determine whether the circuit breaker is powered off after the power outage, and controls the circuit breaker switch state, determines the equipment state through the dry node, reads the monitoring data of the load control device through the RS485 interface, automatically analyzes, and performs wiring judgment; accurately and efficiently performs dry node detection, working status inspection, and loop wiring analysis on the load control equipment;

Third, the utility model records a portable load control operation and maintenance detection device, which can connect to the detection terminal through the operation and maintenance APP on the mobile device, view and store the on-site detection results in real time, greatly improve the work efficiency in the process of load control equipment installation, debugging, operation and maintenance, and monitoring, and has good use prospects.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a system topology diagram of a portable load control operation and maintenance detection device of the utility model;

FIG2 is a structural diagram of a three-phase voltage source in a portable load control operation and maintenance detection device of the utility model;

FIG3 is a structural diagram of a three-phase current source in a portable load control operation and maintenance detection device of the utility model;

FIG4 is a structural diagram of a detection terminal in a portable load control operation and maintenance detection device of the utility model.

In the picture: 1. Operation and maintenance APP;

2. Three-phase voltage source; 201. Display interface switching button; 202. Display screen; 203. Voltage output interface A phase; 204. Voltage output interface B phase; 205. Voltage output interface C phase; 206. Voltage output interface N phase; 207. Power switch; 208. Voltage amplitude output adjustment knob; 209. Voltage phase output adjustment knob; 210. Wireless antenna interface; 211. Charging interface; 212. Circuit board fixing column; 213. Fixing hole embedded in the fixing column; 214. Circuit board No. 1; 215. Three-phase voltage source housing;

3. Three-phase current source; 301. Display interface switching button; 302. Display screen; 303. Current amplitude output adjustment knob; 304. Current output interface A phase +; 305. Current output interface B phase +; 306. Current output interface C phase +; 308. Current phase output adjustment knob; 309. Current output interface A phase -; 310. Current output interface B phase -; 311. Current output interface C phase -; 312. Charging interface; 313. Power switch; 307. Wireless antenna interface; 314. Circuit board fixing column; 315. Fixing hole embedded in the fixing column; 316. Circuit board No. 2; 317. Three-phase current source housing;

4. Detection terminal; 401. First voltage input interface; 402. Second voltage input interface; 403. Third voltage input interface; 404. Fourth voltage input interface; 405. Fifth voltage input interface; 406. Sixth voltage input interface; 407. Seventh voltage input interface; 408. Eighth voltage input interface; 409. Working indicator light; 410. Charging indicator light; 411. Power switch; 412. Display screen; 413. RS485 interface; 414. Dry node detection interface; 415. Charging interface; 416. Storage interface; 417. No. 3 circuit board; 418. Detection terminal housing; 419. Fixed column embedded with fixing hole; 420. Fixed column.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

Example 1

A portable load control operation and maintenance detection device, as shown in FIG1 , includes a signal source and a detection terminal 4, the signal source includes a three-phase voltage source 2 and a three-phase current source 3, and the detection terminal 4 is wirelessly connected to the three-phase voltage source 2 and the three-phase current source 3;

The three-phase voltage source 2 is configured as follows: to be installed at the power distribution end before power transmission, and to provide an adjustable three-phase voltage;

The three-phase current source 3 is configured as follows: to be installed at the power distribution end before power transmission, and to provide an adjustable three-phase current;

The detection terminal 4 is configured to read the monitoring data of the load control device and wirelessly and synchronously obtain the output data of the signal source, analyze the read data and the output data of the signal source, and determine whether the load control device is operating normally.

The detection terminal 4 wirelessly and synchronously acquires the signal source output data including the output voltage, current amplitude and phase of the three-phase voltage source 2 and the three-phase current source 3 .

The detection terminal 4 determines whether the load control device is operating normally by performing wiring identification and analyzing the status of each node of the switch control circuit, and determines whether there is a power outage after measuring the switch when the power is off.

The detection terminal 4 is equipped with an operation and maintenance APP1, which is wirelessly connected to the detection terminal 4 to obtain the detection terminal inspection data and inspection results in real time for display, storage and export.

The operation and maintenance APP 1 uses Bluetooth technology to wirelessly connect to the detection terminal 4.

The three-phase voltage source 2 includes a three-phase voltage source housing 215, a control component No. 1 and an interface component No. 1:

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

Among them, the No. 1 control component and the No. 1 interface component are both electrically connected to the No. 1 circuit board 214.

As shown in FIG. 2 , the first control component includes a display interface switching button 201 and a display screen 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 , the interface component No. 1 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 circuit board 214 is fixed to the circuit board fixing column 212 by means of screws and the fixing holes 213 embedded in the fixing columns.

The three-phase current source 3 includes a three-phase current source housing 317, a second control component and a second interface component:

A second circuit board 316 is installed inside the three-phase current source housing 317;

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

The second interface assembly is mounted on the front end surface of the three-phase current source housing 317;

Among them, the second control component and the second interface component are both electrically connected to the second circuit board 316.

As shown in FIG. 3 , the second control component includes a display interface switching button 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 Figure 3, the second interface component 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 circuit board 316 is fixed to the circuit board fixing column 314 by means of screws and fixing holes 315 embedded in the fixing columns.

The detection terminal 4 includes a detection terminal housing 418, an RS485 interface 413, a third control component and other interface components:

A No. 3 circuit board 417 is installed inside the detection terminal housing 418;

The RS485 interface 413 is installed on the side surface of the detection terminal housing 418. The RS485 interface 413 is connected to the load control device and the circuit breaker switch to read the monitoring data of the load control device;

The third control assembly is mounted on the front face of the detection terminal housing 418;

Other interface components are mounted on the outer surface of the detection terminal housing 418;

Among them, the third control component, other interface components and RS485 interface 413 are all fixedly connected to the third circuit board 417.

As shown in FIG. 4 , the third control component includes a working indicator light 409 , a charging indicator light 410 , a power switch 411 and a display screen 412 .

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

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

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

As shown in FIG. 4 , the third circuit board 417 is fixed to the circuit board fixing column 420 by means of screws and fixing holes 419 embedded in the fixing column.

The internal circuit boards of the signal source and the detection terminal 4 are fixed to the bottom of the shell by screws, and the interfaces are fixedly connected to the circuit boards. The outside of the shell adopts an insulating shell with a high waterproof grade, and the shell is closed by buckles on the edge.

Example 2

Based on Example 1, this example also records the following contents:

During the detection, step 1: During the power outage detection, connect the signal source to power the line;

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

Step 3: The detection terminal 4 performs data analysis, and displays and stores the results;

Step 4: The detection terminal 4 is connected to the operation and maintenance APP1 via Bluetooth, and the operation and maintenance APP1 synchronously displays and stores the detection results;

Step 5: Export the data stored in the detection terminal 4 through the TF card or directly export the detection report from the operation and maintenance APP1, and archive the on-site detection results in time.

Example 3

Based on Example 2, this example also records the following contents:

Use a portable load control operation and maintenance detection device to detect whether there is a power outage after switching on and off.

Before power transmission, the two three-phase voltage inputs of the detection terminal 4 are connected to the front and rear ends of the circuit breaker switch respectively, and no voltage is detected; the signal source is used to distribute the input 3-phase voltage before the switch, and the detection terminal 4 performs wireless synchronous detection to determine whether the power transmission line and the switch are normal. Further, the three-phase voltage output of the signal source is stopped, and the voltage before and after the switch is normal and the switch is fault-free according to the synchronous detection data of the detection terminal 4;

By detecting the 6-way branch voltage, the working state of the circuit breaker switch is controlled.

When the power supply is normal, the voltage measured before the switch 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 line power supply is abnormal;

The voltage measured after the circuit breaker is switched on and off detected by the detection terminal 4 is consistent with the voltage measured before the switch is switched on, and after power is cut off, the voltage is 0, and it is determined that the switch is operating normally, otherwise, the switch may be faulty.

Example 4

Based on Example 3, this example also records the following contents:

Use a portable load control operation and maintenance detection device to detect whether the load control device is operating normally.

Detection before power supply

Connect the signal source to the power distribution terminal and input three-phase voltage and three-phase current to the subsequent stage;

Connect the RS485 interface 413 of the detection terminal 4 to the load control device, and read the monitoring data of the load control device through the RS485 interface 413;

The detection terminal 4 wirelessly and synchronously obtains the output voltage, current amplitude, and phase of the three-phase voltage source 2 and the three-phase current source 3;

Compare and analyze the RS485 interface 413 reading data and the synchronously acquired signal source data to determine whether the load control device is operating normally.

Live detection

Connect the RS485 interface 413 of the detection terminal 4 to the load control device, and read the monitoring data of the load control device through the RS485 interface 413;

Analyze the data read from RS485 interface 413 to determine whether there may be faults such as abnormal wiring.

Example 5

Based on Example 4, this example also records the following contents:

During power outage detection, the signal source is connected to supply power; the detection terminal 4 is connected to the remote signaling device through the dry node detection interface to identify whether the device has a fault.

When the power supply is normal, the detection terminal 4 is directly used to perform dry node detection.

Example 6

Based on Example 5, this example also records the following contents:

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

The detection terminal 4 can be connected to the mobile phone operation and maintenance APP1 through the built-in Bluetooth module, and the operation and maintenance APP1 can display the detection results in various forms such as tables, phasor diagrams, wiring diagrams, etc., view the detection data in real time, save and export the detection results in time, and facilitate the archiving of detection records.

Example 7

Based on Example 6, this example also records the following contents:

The three-phase voltage source 2 and the three-phase current source 3 of the signal source are both equipped with amplitude and phase output adjustment knobs. Through wireless communication, the start output command sent by the detection terminal 4 is obtained at the same time, and the output is started synchronously. The output voltage and current can be adjusted by the output adjustment knob to control the output size.

The signal source is equipped with a display screen (202 display screen and 302 display screen), which can directly display the output voltage or current in real time on the built-in display screen, and the data can be viewed through the display function switching button;

The detection terminal 4 is provided with a display screen 412, which obtains and displays the output data of the signal source through wireless communication, and simultaneously displays the measurement and reading data of the detection terminal 4. The detection results can be saved locally at any time, and the historical data can also be viewed directly on the detection terminal 4.

Example 8

Based on Example 7, this example also records the following contents:

The signal source has an external wireless antenna interface, and the wireless communication signal can be enhanced by installing a wireless antenna; the detection terminal 4 can also have a built-in wireless antenna to ensure the stability of transmission between the signal source and the detection terminal 4.

Example 9

Based on Example 8, this example also records the following contents:

Both the signal source and the detection terminal 4 have built-in lithium batteries, which can be charged through the charging interface to ensure the continuous and reliable operation of the device;

The power switch 411 of the detection terminal 4 controls the start and stop of the working power 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 of the signal source;

The working indicator light of the detection terminal 4 indicates the working status by flashing after power is supplied. When flashing, it indicates that the measurement is in progress, and when it is always on, it indicates that the work is not started;

The charging interface 415 of the detection terminal 4 adopts the commonly used Type-C interface, and the charging status is indicated by the charging indicator light 410; the charging indication of the signal source charging interface can display the charging status through a charger with an indicator light.

The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims (7)

1. A portable load control operation and maintenance detection device, characterized in that it 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 wirelessly connected to the three-phase voltage source (2) and the three-phase current source (3); The three-phase voltage source (2) is configured to be installed at the power distribution end before power transmission to provide an adjustable three-phase voltage; The three-phase current source (3) is configured to be installed at the power distribution end before power transmission to provide an adjustable three-phase current; The detection terminal (4) is configured to read the monitoring data of the load control device and wirelessly and synchronously obtain the output data of the signal source, analyze the read data and the output data of the signal source, and determine whether the load control device is operating normally. 2. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the detection terminal (4) wirelessly and synchronously obtains signal source output data including the output voltage, current amplitude and phase of the three-phase voltage source (2) and the three-phase current source (3). 3. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the detection terminal (4) determines whether the load control device is operating normally by performing wiring identification and analyzing the status of each node of the switch control circuit, and determines whether there is a power outage after measuring the switch when the power is off. 4. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the detection terminal (4) is equipped with an operation and maintenance APP (1), and the operation and maintenance APP (1) is wirelessly connected to the detection terminal (4), and obtains the detection terminal inspection data and inspection results in real time for display, storage, and export. 5. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the three-phase voltage source (2) comprises: A three-phase voltage source housing (215) having a first circuit board (214) installed therein; A control assembly No. 1, which is mounted on the front face of the three-phase voltage source housing (215); A first interface assembly, which is mounted on the front end surface of the three-phase voltage source housing (215); Wherein, the first control component and the first interface component are both electrically connected to the first circuit board (214). 6. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the three-phase current source (3) comprises: A three-phase current source housing (317) having a second circuit board (316) installed therein; A second control assembly, which is mounted on the front face of the three-phase current source housing (317); A second interface assembly, which is mounted on the front end surface of the three-phase current source housing (317); Wherein, the second control component and the second interface component are both electrically connected to the second circuit board (316). 7. A portable load control operation and maintenance detection device according to claim 1, characterized in that: the detection terminal (4) comprises: A detection terminal housing (418) having a third circuit board (417) installed therein; RS485 interface (413), which is installed on the side surface of the detection terminal housing (418), connected to the load control device and the circuit breaker switch, and reads the monitoring data of the load control device; A third control assembly, which is mounted on the front face of the detection terminal housing (418); Other interface components mounted on the outer surface of the detection terminal housing (418); The third control component, other interface components and RS485 interface (413) are all fixedly connected to the third circuit board (417).