CN214473796U

CN214473796U - SF (sulfur hexafluoride)6On-line monitoring system

Info

Publication number: CN214473796U
Application number: CN202120475375.9U
Authority: CN
Inventors: 彭晓帆; 宁文远; 罗钟雷; 明开亮; 肖明; 张坤鹏; 许满江
Original assignee: Zhengzhou Sail Electronic Co Ltd
Current assignee: Zhengzhou Sail Electronic Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-10-22
Anticipated expiration: 2031-03-04

Abstract

The utility model relates to a SF₆On-line monitoring system, SF₆The on-line monitoring system comprises a pointer SF₆Gas density relay, three-way pipe, remote transmission module, sensor module, self-induction fan, pipeline and pointer SF₆The gas density relay is connected with a first interface of the three-way pipe, the sensor module is arranged in the three-way pipe and connected with the remote transmission module, and the pointer SF₆The gas density relay comprises a pressure gauge,the remote transmission module is installed on the pressure gauge, the second interface and the third interface of the three-way pipe are connected with the pipeline, one end of the pipeline is connected with the transformer switch body, the other end of the pipeline is a check port, and the self-induction fan is arranged in the pipeline. The utility model provides an interior SF of density relay₆The problem of detection error caused by non-circulation of gas is solved, the real-time detection of the full-period running state of the high-voltage equipment is realized, and the reliable running of the high-voltage equipment is ensured.

Description

SF (sulfur hexafluoride)6On-line monitoring system

Technical Field

The utility model relates to an SF₆The technical field of gas density relays, in particular to SF₆Provided is an online monitoring system.

Background

SF₆The density relay is an important protection and control element in the power system, if the breaker fails, great economic loss can be caused, and various indexes of the breaker, especially SF, must be monitored frequently to ensure the reliability of the breaker operation₆Gas, SF₆Three physical indexes of gas density, humidity and temperature determine SF₆The safe operation of the gas insulated switchgear assembly must meet the relevant standards to ensure that the SF is safe₆The circuit breaker maintains a good working state for a long time. For SF₆Accurate online monitoring of indexes such as gas density, humidity and temperature ensures that the SF of the power grid₆The important means for the safe operation of the gas insulated switchgear. Due to SF₆The alarm and lock values of the gas density relay are deviated after a period of use like other pressure gauges. In addition, because the contact of the density relay is insensitive to motion or fails, if the contact is not checked, potential safety hazards exist. SF₆The verification of the density relay is relatively complicated, but the verification is indispensable, SF₆The check of the circuit breaker density meter or the density relay is to automatically calculate the SF at 20 ℃ by using an instrument₆Gas pressure values showing densities at various temperatures and pressuresThe value is compared with various pressures simulated by the instrument to observe the contact condition of the electrical contacts, whether the circuit breaker can be signaled or locked within the specified value of the low pressure. And SF₆SF in density relay₆The measured value of the gas which is not circulated for a long time and the SF in the body₆The gas has a certain error.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to provide a SF₆On-line monitoring system for solving current SF₆The density relay data has a certain error problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

SF₆on-line detection system comprising pointer SF₆The system comprises a gas density relay, a three-way pipe, a remote transmission module, a sensor module, a self-induction fan and a pipeline; the pointer SF₆The gas density relay is connected with a first interface of the three-way pipe, the sensor module is arranged in the three-way pipe, and the sensor module is connected with the remote transmission module; the pointer SF₆The gas density relay comprises a pressure gauge, and the remote transmission module is arranged on the pressure gauge; the second interface and the third interface of the three-way pipe are connected with a pipeline, one end of the pipeline is connected with the transformer switch body, and the other end of the pipeline is a check port; the self-induction fan is arranged in the pipeline.

Further, a first air pipe is arranged in the pipeline, and the self-induction fan is arranged in the first air pipe.

Further, the terminal end of the first air duct is located between the second interface and the calibration port.

Further, the fan is disposed in the first air duct at a position near the distal end.

Further, a second air pipe is arranged in the pipeline.

Furthermore, an isolating part is arranged between the first air pipe and the second air pipe.

Further, the length of the first air duct is greater than the length of the second air duct.

Further, the isolation part is arranged at one end, close to the transformer switch body, of the pipeline.

Further, the sensors include a pressure sensor, a temperature sensor, and a humidity sensor.

Furthermore, the remote transmission module is connected with a master control room.

The utility model has the advantages that:

the utility model relates to a SF₆On-line detection system comprising pointer SF₆Gas density relay, three-way pipe, remote transmission module, sensor module, self-induction fan, pipeline and pointer SF₆The gas density relay is connected with a first interface of the three-way pipe, the sensor module is arranged in the three-way pipe and connected with the remote transmission module, and the pointer SF₆The gas density relay comprises a pressure gauge, the remote transmission module is installed on the pressure gauge, the second interface and the third interface of the three-way pipe are connected with a pipeline, one end of the pipeline is connected with the transformer switch body, the other end of the pipeline is a check port, and the self-induction fan is arranged in the pipeline. The utility model provides an interior SF of density relay₆The problem of detection error caused by non-circulation of gas is solved, the real-time detection of the full-period running state of the high-voltage equipment is realized, and the reliable running of the high-voltage equipment is ensured.

Drawings

FIG. 1 shows an SF sample of the present invention₆Schematic diagram of an on-line detection system.

Names corresponding to the marks in the figure:

1. pointer SF₆The gas density relay comprises a gas density relay body, 2, a three-way pipe, 21, a first connector, 22, a second connector, 23, a third connector, 3, a remote transmission module, 4, a sensor module, 5, a self-induction fan, 6, a pipeline, 7, a body connector, 8, a transformer switch body, 9, a sensor connector, 10, a first air pipe, 11, a second air pipe, 12, a check port, 13, an instrument connector, 14, a pressure gauge, 15 and an isolation part.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Embodiment 1 of the utility model:

SF₆on-line monitoring system comprising pointer SF₆The device comprises a gas density relay 1, a three-way pipe 2, a remote transmission module 3, a sensor module 4, a self-induction fan 5 and a pipeline 6. The remote transmission module 3 is arranged at SF₆On the pressure gauge 15 of the gas density relay 1, the sensor module 4 is arranged on the three-way pipe 2.

As shown in FIG. 1, the three-way pipe 2 comprises a first connector 21, a second connector 22 and a third connector 23, wherein the first connector 21 is provided with a pointer SF₆ Gas density relay 1, second interface 22, third interface 33 are connected with pipeline 6, and the right-hand member and the transformer switch body 8 of pipeline 6 are connected, and the right-hand member of pipeline 6 is provided with body interface 7, and pipeline 6 passes through body interface 7 to be connected with transformer switch body 8, and the bottom of three-way pipe 2 is provided with sensor interface 9, and sensor module 4 connects on sensor interface 9, and sensor module 4 includes temperature sensor, humidity transducer, pressure sensor.

The left end of the pipeline is a check port 12, and the relay can be checked and calibrated and supplied with air through the check port 12.

As shown in fig. 1, air ducts are arranged in the duct 6, and are denoted as a first air duct 10 and a second air duct 11, the first air duct 10 is arranged at the lower part in the duct 6, the second duct 11 is arranged at the upper part in the duct 6, an isolation part 15 is arranged at the position, close to the transformer switch body 8, of the right side of the duct 6, of the first air duct 10 and the second air duct 11, and the isolation part 15 is arranged at one side, close to the transformer switch body 8, in the air duct 6. Be provided with self-inductance fan 5 in first tuber pipe 10, self-inductance fan 5 sets up in first tuber pipe 10 near terminal position, also in the pipeline 6 between check-up mouth 12 and second interface 22, self-inductance fan 5 constantly rotates, and the wind direction gets into in second tuber pipe 11 along transformer switch body 8, then gets into in three-way pipe 2, and in reentrant pipeline 6, through self-inductance fan 5's blowing, get into three-way pipe 2 once more, then get into first tuber pipe 10, get into transformer switch body 8 at last, accomplish a circulation. SF₆The gas is continuously circulated to ensure SF₆Gas concentration and transformer switch book in density relayThe gas concentration in the body 8 is the same, and the detection accuracy is ensured.

During operation, the pressure sensor collects SF in the three-way pipe 2 in real time₆Gas pressure value and collected SF₆The pressure value is transmitted to the remote transmission module 3 through the sensor interface 9, and in the embodiment, the remote transmission module 3 adopts an RS-485 module. The temperature sensor collects the environmental temperature value in real time and sends the collected environmental temperature value to the remote transmission module 3. The humidity sensor collects environmental humidity information in real time and sends the collected humidity value to the remote transmission module 3. The density meter sends the readings to the remote transmission module 3 in real time.

Information such as pressure, temperature, humidity, manometer reading that teletransmission module 3 received is sent to the communication rack through the concentrator, and in this embodiment, the concentrator adopts the RS458 concentrator, and the communication rack adopts the ICE61850 standard. The communication cabinet is connected with the main control room, the main control room compares the pressure of the readings of the pressure sensor and the pressure gauge, and the SF is verified on line through analysis₆Precision of indication value of the density relay. At the same time, the system can also treat SF in the body₆And the gas concentration and the decomposition products are comprehensively evaluated, and abnormal data are subjected to alarm processing, so that the safe and reliable operation of high-voltage equipment is ensured.

The utility model relates to a SF₆The on-line monitoring system can monitor various data of the density relay in real time, realize comprehensive evaluation of the full life cycle running state of the equipment, ensure the running safety of the high-voltage equipment and ensure that the density relay is used for SF₆The concentration monitoring is more accurate, the generation of errors is avoided, and the monitoring data precision is improved.

Claims

1. SF (sulfur hexafluoride)₆The on-line monitoring system is characterized in that: including pointer SF₆The system comprises a gas density relay, a three-way pipe, a remote transmission module, a sensor module, a self-induction fan and a pipeline; the pointer SF₆The gas density relay is connected with a first interface of the three-way pipe, the sensor module is arranged in the three-way pipe, and the sensor module is connected with the remote transmission module; the pointer SF₆Gas density relayThe remote transmission module is arranged on the pressure gauge; the second interface and the third interface of the three-way pipe are connected with a pipeline, one end of the pipeline is connected with the transformer switch body, and the other end of the pipeline is a check port; the self-induction fan is arranged in the pipeline.

2. SF according to claim 1₆The on-line monitoring system is characterized in that: a first air pipe is arranged in the pipeline, and the self-induction fan is arranged in the first air pipe.

3. An SF according to claim 2₆The on-line monitoring system is characterized in that: the tail end of the first air pipe is located between the second connector and the check port.

4. An SF according to claim 3₆The on-line monitoring system is characterized in that: the fan is disposed in the first duct at a position near the distal end.

5. An SF according to any of claims 2 to 4₆The on-line monitoring system is characterized in that: and a second air pipe is arranged in the pipeline.

6. SF according to claim 5₆The on-line monitoring system is characterized in that: and an isolating part is arranged between the first air pipe and the second air pipe.

7. SF according to claim 6₆The on-line monitoring system is characterized in that: the length of the first air pipe is greater than that of the second air pipe.

8. SF according to claim 6₆The on-line monitoring system is characterized in that: the isolation part is arranged at one end of the pipeline close to the transformer switch body.

9. According to claim1 an SF as described₆The on-line monitoring system is characterized in that: the sensors include a pressure sensor, a temperature sensor, and a humidity sensor.

10. SF according to claim 1₆The on-line monitoring system is characterized in that: the remote transmission module is connected with a main control room.