SF6 gas pressure adjusting device for intelligent GIS equipment

Abstract

The invention discloses an SF6 gas pressure adjusting device for intelligent GIS equipment, and belongs to the technical field of electrical equipment. According to the structure, the inner side of a connecting hole is connected with GIS equipment, the outer side of the connecting hole is connected to an SF6 gas cylinder through a pipeline, an electromagnetic valve is arranged on the pipeline, a sensor is arranged at the position, between the electromagnetic valve and the connecting hole, of the pipeline, and a control unit is in communication connection with the sensor and the electromagnetic valve. The control unit comprises a processing device, a control device and an alarm device, the processing device receives pressure data from the sensor, compares and analyzes the pressure data, obtains a conclusion and sends the conclusion to the control device and the alarm device, the control device issues an instruction to the electromagnetic valve according to the conclusion to control the electromagnetic valve to be opened or closed, and the alarm device gives an alarm according to the conclusion. The method is high in reliability, gas can be quickly supplemented or exhausted when the SF6 gas pressure of the GIS equipment is influenced by the environment through comparative analysis with historical data, and the problem that the insulativity of the GIS equipment is reduced is solved in a targeted mode.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical equipment, and is specifically an intelligent GIS device SF 6 Gas pressure regulating device. Background Art

[0002] Gas Insulated Substation (GIS) is abbreviated as GIS. The length of GIS equipment generally ranges from tens of meters to hundreds of meters. It is divided into several independent SF 6 The air chamber is hard-connected between two adjacent equipment. Once a certain equipment leaks due to internal or external factors such as self-vibration, climate environment, earthquake, etc., it will cause leakage accidents or insulation breakdown, which will directly threaten the safe and stable operation of the power grid.

[0003] SF 6 Gas will liquefy in extremely cold weather, and will vaporize again when the ambient temperature rises, causing a sharp change in the pressure of the gas chamber. Due to the clustering characteristics of GIS equipment, it is also difficult to artificially replenish gas in cold weather. At present, the operation personnel conduct daily inspections on each SF 6 Compare and analyze the pressure data in the air chamber to determine whether there is an upward or downward trend. Generally, SF 6 The pressure in the air chamber changes slightly, and continuous decrease or increase may have a great impact on the insulation inside the air chamber. However, the manual transcription data is affected by personal experience, standing position, vision and other factors, and the data will have a large deviation, and the data reference is poor. In addition, the manual transcription workload is large and relies on personal subjective initiative, which ultimately makes it difficult to detect SF in a timely and accurate manner. 6 Changes in air chamber pressure pose a huge safety hazard to the stable operation of GIS equipment, and there is also a risk of untimely air replenishment and exhaust. Summary of the invention

[0004] The present invention aims to provide an intelligent GIS device SF 6 The gas pressure regulating device is used to solve the technical problems that the pressure monitoring method of manually transcribing data has large errors and is seriously affected by personal factors.

[0005] Another technical problem to be solved by the present invention is that the pressure monitoring method of manually transcribing data is labor-intensive and overly dependent on individual subjective initiative.

[0006] Another technical problem to be solved by the present invention is to 6 The artificial air replenishment and exhaust operation of the air chamber is difficult to operate, the workload is large, and it is difficult to implement in time.

[0007] Another technical problem to be solved by the present invention is that the pressure monitoring method of manually transcribing data is difficult to detect SF in a timely and accurate manner. 6 Air chamber pressure changes and their trends.

[0008] Another technical problem to be solved by the present invention is how to develop a method for SF 6 The device monitors the pressure in the air chamber in real time and automatically completes the air replenishment and exhaust operations.

[0009] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0010] An intelligent GIS device SF 6 Gas pressure regulating device, including control unit, connection hole, sensor, solenoid valve, SF 6 The inner side of the connection hole is connected to the GIS equipment, and the outer side of the connection hole is connected to the SF 6 The gas cylinder is provided with a solenoid valve on the pipeline, a sensor is provided on the pipeline at a position between the solenoid valve and the connecting hole, and the control unit is respectively connected to the sensor and the solenoid valve for communication.

[0011] Preferably, the control unit includes a processing device, a control device, and an alarm device, wherein the processing device receives pressure data from the sensor and performs comparative analysis, draws a conclusion and sends it to the control device and the alarm device, the control device sends an instruction to the solenoid valve according to the conclusion to control the solenoid valve to open or close (to achieve air replenishment or exhaust of GIS equipment), and the alarm device executes an alarm according to the conclusion.

[0012] Preferably, the comparative analysis includes: the processing device compares the current data with the historical data to determine the SF 6 The amount of change in gas pressure, with the amount of change exceeding a preset pressure change threshold being at least part of the conclusion.

[0013] Preferably, a pressure gauge is further provided on the pipeline at a position between the solenoid valve and the connecting hole.

[0014] Preferably, on the pipeline, between the solenoid valve and the SF 6 Gas cylinder pressure gauges are provided between the gas cylinders.

[0015] Preferably, the invention also includes an exhaust gas treatment device, wherein the input end of the exhaust gas treatment device is connected to the SF 6 The exhaust gas treatment device is connected with a gas cylinder, and an exhaust port is arranged at the output end of the exhaust gas treatment device.

[0016] Preferably, the communication connection is via an optical fiber connection.

[0017] Preferably, the connection hole and the sensor are components of the monitoring unit; the solenoid valve and the SF6 Gas cylinders are components of gas storage units.

[0018] Preferably, it further comprises a power supply device, which is respectively installed in the monitoring unit, the control unit and the gas storage unit, and supplies power to the monitoring unit, the control unit and the gas storage unit respectively.

[0019] Preferably, the pipeline is a connecting hose.

[0020] In the above technical solution, the processing device can realize data identification, error processing and historical comparison, the control device can realize bilateral control of the monitoring unit and the gas storage unit, and the alarm device can quickly remind the on-site personnel to check and handle abnormal information. The control unit sends instructions to the monitoring unit at regular intervals and collects data information collected by the sensor. The solenoid valve can receive the instructions sent by the control device through the optical fiber to replenish and exhaust the equipment, and the cylinder pressure gauge is used to monitor the SF 6 The internal pressure of the gas cylinder and the exhaust gas treatment device 6 The gas is processed and then discharged, and the exhaust hole is connected to the outside world, which can be used for SF 6 The gas cylinder is vented and refilled with gas.

[0021] The operation process of the present invention is as follows:

[0022] Step 1: The monitoring unit regularly receives instructions from the control unit, collects data on the pressure inside the GIS equipment, processes the data through the control unit, compares and analyzes it with historical data, determines the pressure rise and fall trend, and issues exhaust or air replenishment instructions.

[0023] Step 2: The solenoid valve receives the exhaust or air supply command, and the SF in the air storage unit 6 The gas is transported to the monitoring unit through the pressure difference, and the baffle of the connecting hole adjusts the pressure inside the GIS device when the pressure on both sides is unbalanced. When the pressure inside the GIS device reaches the preset threshold, the sensor sends information to the control unit, and the control unit sends a closing instruction to the solenoid valve.

[0024] Step 3: The gas storage unit SF 6 Gas cylinder pressure gauge monitors SF 6 The pressure in the gas cylinder, when the pressure in the gas cylinder reaches the threshold, the control unit will open the exhaust port to exhaust, or remind the operation and maintenance personnel to exhaust the SF through the exhaust port. 6 The gas cylinder is artificially replenished with gas, and after the normal pressure is restored, the control unit will issue an instruction to close the exhaust port.

[0025] The invention discloses an intelligent GIS device SF 6 Gas pressure regulating device. This device can detect SF in time6 The pressure in the air chamber changes, and the corresponding air chamber is replenished and exhausted in time to enhance the reliability of GIS equipment operation.

[0026] The beneficial effects of the present invention also include: being able to timely and accurately judge the internal pressure changes of GIS equipment, and correctly decide whether to perform air replenishment or exhaust operations based on the comparison results with historical data, effectively reducing the risk of misjudgment, and early detection of reduced internal insulation of GIS equipment to prevent further expansion of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] In the figure:

[0029] 1. Monitoring unit 2. Control unit 3. Gas storage unit 4. Connection hole

[0030] 5. Pressure gauge 6. Sensor 7. Processing device 8. Control device

[0031] 9. Alarm device 10. Solenoid valve 11. Gas cylinder pressure gauge 12. SF 6 Gas Cylinders

[0032] 13. Exhaust port 14. Optical fiber 15. Exhaust gas treatment device. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention will be described in detail below. In order to avoid too much unnecessary details, the well-known structures or functions will not be described in detail in the following examples. The approximate language used in the following examples can be used for quantitative expression, indicating that the quantity can be allowed to have a certain change without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following examples have the same meaning as those generally understood by those skilled in the art to which the present invention belongs.

[0034] Example 1

[0035] An intelligent GIS device SF 6 The gas pressure regulating device includes a monitoring unit 1, a control unit 2, and a gas storage unit 3. The monitoring unit 1 is connected to the GIS equipment and includes a pressure gauge 5, a sensor 6, and a connecting hole 4. The gas storage unit 3 is connected to the monitoring unit 1 through a connecting hose and includes a solenoid valve 10, a gas cylinder pressure gauge 11, and a SF 6Gas cylinder 12, waste gas treatment device 15, exhaust port 13; control unit 2 communicates with monitoring unit 1 and gas storage unit 3 through optical fiber 14 to achieve information exchange, including processing device 7, control device 8, alarm device 9; monitoring unit 1 is connected to GIS equipment through connection hole 4, and real-time monitoring of SF inside the equipment through sensor 6 and pressure gauge 5. 6 The gas pressure data is transmitted to the control unit 2 via the optical fiber 14. The control unit 2 compares and analyzes the obtained data through the processing device 7, and sends the conclusion to the control device 8 and the alarm device 9. When the data reaches the set threshold, the control device sends a command to the solenoid valve 10 of the gas storage unit 3 to replenish or exhaust the GIS equipment.

[0036] In this embodiment, the processing device 7 realizes data identification, error processing and historical comparison, the control device 8 realizes bilateral control of the monitoring unit 1 and the gas storage unit 3, and the alarm device 9 realizes rapid reminder of on-site personnel to check and process abnormal information.

[0037] In this embodiment, the intelligent GIS device SF 6 The gas pressure regulating device also includes a power supply device (also called a power supply device), which is installed in the monitoring unit 1, the gas storage unit 3, and the control unit 2 respectively, and provides power to the monitoring unit 1, the gas storage unit 3, and the control unit 2 respectively.

[0038] In this embodiment, the intelligent GIS device SF 6 The gas pressure regulating device also includes a connecting hose, which is installed at the connection between the GIS equipment and the monitoring unit 1 and at the connection between the monitoring unit 1 and the gas storage unit 3, and is used for SF 6 Gas circulates within the device.

[0039] Beneficial effect: The intelligent GIS device SF of the present invention 6 The gas pressure regulating device regularly collects SF inside the GIS equipment 6 The pressure situation is analyzed and compared with the measurement results, and an alarm signal is issued when the preset threshold is exceeded to remind the operating personnel to take countermeasures to prevent the accident from further expanding.

[0040] Example 2

[0041] An intelligent GIS device SF 6 The gas pressure regulating device includes: a monitoring unit 1, a control unit 2, and a gas storage unit 3. The monitoring unit 1 is connected to the GIS equipment through a connecting hole 4, and the SF inside the equipment is monitored in real time through a sensor 6 and a pressure gauge 5. 6The gas pressure condition is transmitted to the control unit 2 through the optical fiber 14. The control unit 2 compares and analyzes the obtained data through the processing device 7, and sends the conclusion to the control device 8 and the alarm device 9. When the data reaches the set threshold, the control device 8 sends a command to the solenoid valve 10 of the gas storage unit 3 to replenish or exhaust the GIS equipment.

[0042] The monitoring unit 1 is connected to the SF inside the GIS equipment through the connection hole 4. 6 The gas pressure is connected to transmit data to the control unit 2 via the pressure gauge 5 and the sensor 6;

[0043] The control unit 2 sends instructions to the monitoring unit 1 at a regular interval, and collects data information collected by the sensor 6, and compares the current data information with the historical data information through the processing device 7 to determine the SF 6 When the gas pressure change exceeds a preset pressure change threshold, the processing device 7 sends a signal to the control device 8 and the alarm device 9.

[0044] The gas storage unit 3 includes a solenoid valve 10, a gas cylinder pressure gauge 11, a SF 6 The gas cylinder 12, the exhaust gas treatment device 15, the exhaust port 13, the solenoid valve 10 receives the command sent by the control device 8 through the optical fiber 14 to replenish and exhaust the equipment, and the gas cylinder pressure gauge 11 is used to monitor the SF 6 The internal pressure of the gas cylinder 12, the exhaust gas treatment device 15 6 The gas is processed and then discharged, and the exhaust hole 13 is connected to the outside world. 6 The gas cylinder 12 is used for exhaust and gas replenishment.

[0045] Example 3

[0046] An intelligent GIS device SF 6 Gas pressure regulating devices, such as Figure 1 As shown, it includes a control unit 2, a connecting hole 4, a sensor 6, a solenoid valve 10, and a SF 6 The gas cylinder 12, wherein the inner side of the connection hole 4 is connected to the GIS equipment, and the outer side of the connection hole 4 is connected to the SF 6 The gas cylinder 12 is provided with a solenoid valve 10 on the pipeline, and a sensor 6 is provided on the pipeline between the solenoid valve 10 and the connecting hole 4. The control unit 2 is communicatively connected with the sensor 6 and the solenoid valve 10 respectively.

[0047] Among them, the control unit 2 includes a processing device 7, a control device 8, and an alarm device 9. The processing device 7 receives the pressure data from the sensor 6 and performs comparative analysis, draws a conclusion and sends it to the control device 8 and the alarm device 9. The control device 8 sends an instruction to the solenoid valve 10 to control its opening or closing according to the conclusion, and the alarm device 9 executes an alarm according to the conclusion.

[0048] The comparative analysis includes: the processing device 7 compares the current data with the historical data to determine the SF 6 The amount of change in gas pressure, with the amount of change exceeding a preset pressure change threshold being at least part of the conclusion.

[0049] A pressure gauge 5 is also provided on the pipeline between the solenoid valve 10 and the connecting hole 4 .

[0050] On the pipeline, between the solenoid valve 10 and SF 6 A gas cylinder pressure gauge 11 is provided between the gas cylinders 12 .

[0051] The exhaust gas treatment device 15 is also included, and the input end of the exhaust gas treatment device 15 is connected to the SF 6 The exhaust gas treatment device 15 is connected to a gas cylinder 12 and an exhaust port 13 is provided at the output end of the exhaust gas treatment device 15 .

[0052] The communication connection is via optical fiber 14 .

[0053] The connection hole 4 and the sensor 6 are components of the monitoring unit 1; the solenoid valve 10 and the SF 6 The gas cylinder 12 is a component of the gas storage unit 3 .

[0054] It also includes a power supply device, which is installed in the monitoring unit 1, the control unit 2, and the gas storage unit 3 respectively, and supplies power to the monitoring unit 1, the control unit 2, and the gas storage unit 3 respectively.

[0055] The pipeline is a connecting hose.

[0056] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. An SF6 gas pressure regulating device for intelligent GIS equipment, characterized in that: The invention comprises a control unit (2), a connection hole (4), a sensor (6), a solenoid valve (10), and a SF6 gas cylinder (12), wherein the inner side of the connection hole (4) is connected to a GIS device, and the outer side of the connection hole (4) is connected to the SF6 gas cylinder (12) via a pipeline, the solenoid valve (10) is arranged on the pipeline, and the sensor (6) is arranged on the pipeline at a position between the solenoid valve (10) and the connection hole (4), and the control unit (2) is respectively connected to the sensor (6) and the solenoid valve (10) in communication.

2. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: The control unit (2) comprises a processing device (7), a control device (8), and an alarm device (9), wherein the processing device (7) receives pressure data from the sensor (6) and performs comparative analysis, draws a conclusion and sends it to the control device (8) and the alarm device (9), the control device (8) sends an instruction to the solenoid valve (10) to control the opening or closing of the solenoid valve according to the conclusion, and the alarm device (9) executes an alarm according to the conclusion.

3. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 2, characterized in that: The comparative analysis comprises: the processing device (7) compares the current data with the historical data to determine the change in SF6 gas pressure, and takes the change exceeding a preset pressure change threshold as at least part of the conclusion.

4. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: A pressure gauge (5) is also provided on the pipeline at a position between the solenoid valve (10) and the connecting hole (4).

5. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: A gas cylinder pressure gauge (11) is provided on the pipeline at a position between the solenoid valve (10) and the SF6 gas cylinder (12).

6. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: It also includes a waste gas treatment device (15), the input end of the waste gas treatment device (15) is connected to the SF6 gas cylinder (12), and an exhaust port (13) is provided at the output end of the waste gas treatment device (15).

7. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: The communication connection is via an optical fiber (14).

8. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: The connecting hole (4) and the sensor (6) are components of the monitoring unit (1); the solenoid valve (10) and the SF6 gas cylinder (12) are components of the gas storage unit (3).

9. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 8, characterized in that: It also comprises a power supply device, which is respectively installed in the monitoring unit (1), the control unit (2) and the gas storage unit (3), and supplies power to the monitoring unit (1), the control unit (2) and the gas storage unit (3).

10. The SF6 gas pressure regulating device for intelligent GIS equipment according to claim 1, characterized in that: The pipeline is a connecting hose.

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