Wireless power frequency signal synchronizer

Abstract

The utility model discloses a wireless power frequency signal synchronizer, comprising a signal input device and a signal output device, and the device housing of the signal input device and the device housing of the signal output device are respectively provided with an antenna. The equipment shell is provided with a connecting assembly used for connecting the antenna and an adjusting assembly arranged on the connecting assembly and used for adjusting the angle of the antenna. According to the wireless power frequency signal synchronizer, wireless signal transmission between the signal input device and the signal output device is utilized to realize wireless detection of partial discharge in a transformer station, so that the efficiency and precision of partial discharge detection in the transformer station are improved, and at the same time, through the arrangement of the adjusting assembly, the wireless power frequency signal synchronizer can be used for realizing wireless detection of partial discharge in the transformer station. And the risk that the use angle of the antenna is changed due to accidental touch or external environment factors is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of power frequency signal synchronizers, specifically a wireless power frequency signal synchronizer. Background Technology

[0002] When detecting partial discharge in a substation, a power frequency signal needs to be input and then converted into a power frequency zero-crossing phase signal. Existing detection methods mainly fall into two categories: wired and wireless. However, in actual detection processes, since the partial discharge detection location is often hundreds of meters away from the power frequency signal location, acquiring the power frequency signal via a wired method is extremely inconvenient. Therefore, a wireless method is primarily used to acquire both the power frequency signal and the power frequency zero-crossing phase signal. There are two main existing wireless methods:

[0003] Using Bluetooth or infrared, the host acquires the zero-crossing phase information of the power frequency and sends it directly to the slave. Upon receiving the information, the slave directly outputs the zero-crossing phase signal. This method has low phase synchronization accuracy, typically on the order of milliseconds.

[0004] In the wireless radio frequency method, the master unit collects the zero-crossing phase information of the power frequency and then sends it to the slave unit. The slave unit calculates and outputs the zero-crossing phase signal of the power frequency. The slave unit does not output a complete synchronous power frequency signal.

[0005] When a power frequency signal synchronizer acquires and transmits power frequency signals and power frequency zero-crossing phase signals wirelessly, the antenna, as a key component of wireless communication, can convert the electrical signals generated inside the device into electromagnetic waves and transmit them. At the same time, it can also receive electromagnetic waves from the outside and convert them into electrical signals. In the scenario of partial discharge detection in substations, after the signal input device acquires the power frequency signal, it needs to use the antenna to transmit the electromagnetic waves containing the characteristics of the power frequency signal and synchronization information. The signal output device relies on the antenna to receive these signals, thereby realizing the wireless transmission of power frequency signals between different devices. This eliminates the constraints of wired connections and solves the problem of inconvenience in deployment and use of wired methods for long-distance transmission.

[0006] The antennas on the signal output and input devices of the power frequency signal synchronizer are connected in a rotatable manner. Although this allows for easy adjustment of the antenna angle, the antenna is exposed to the external environment and is easily affected by accidental contact or external environmental factors, which can change the antenna angle and thus affect the signal strength. Utility Model Content

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wireless power frequency signal synchronizer, comprising a signal input device and a signal output device, wherein the signal input device is wirelessly connected to multiple signal output devices; and further comprising:

[0008] The signal input device includes a device housing and a power frequency signal input interface, a battery, a charging and discharging module, a power indicator, a charging port / serial port, a power frequency signal acquisition and conversion module, a wireless time synchronization module, a power indicator, a connection indicator, and a synchronization indicator, all housed within the device housing.

[0009] The signal output device includes a device housing and a power frequency signal output interface, a power frequency zero-crossing phase output interface, a battery, a charging and discharging module, a power indicator, a charging port / serial port, a power frequency signal conversion and generation module, a wireless time synchronization module, a power indicator, a connection indicator, and a synchronization indicator, all disposed in the device housing.

[0010] Both the signal input device and the signal output device have antennas on their housings. The housings are provided with a connection component for connecting the antennas and an adjustment component for adjusting the angle of the antennas.

[0011] The connection assembly includes a connector fixedly connected to one side of the device housing, a mounting base on the side of the connector away from the device housing, one end of the antenna being inserted into the mounting base, a limiting bolt for limiting the connection of the antenna, and a connecting wire for electrically connecting the antenna to electrical components inside the device housing.

[0012] The adjustment assembly includes an adjustment hole formed in the connecting seat. A spline groove is formed on the inner wall of the adjustment hole near the equipment housing. A spline plate is slidably connected to the spline groove. An adjustment rod is connected to the end of the spline plate away from the equipment housing. One end of the adjustment rod is connected to the mounting seat. The adjustment hole is provided with a pressing assembly for pressing the spline plate.

[0013] The extrusion assembly includes a fixed ring fixedly connected to the side wall of the adjusting rod. A spring is provided on the side of the fixed ring away from the spline plate. The spring is sleeved on the side wall of the adjusting rod. The end of the spring away from the fixed ring is connected to the inner wall of the adjusting hole through a rotating assembly.

[0014] The rotating component is a rotating ring, which is rotatably connected to the inner wall of the adjustment hole on the side away from the equipment housing. The end of the spring away from the fixed ring is connected to the rotating ring.

[0015] The signal input and signal output devices can transmit data via serial port or send data to a designated device or broadcast data via AT commands.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention relates to a wireless power frequency signal synchronizer, which utilizes wireless signal transmission between signal input and signal output devices to achieve wireless detection of partial discharges within substations. This improves the efficiency and accuracy of partial discharge detection within substations. Simultaneously, by adjusting the settings of the components, the antenna angle can be adjusted while simultaneously limiting the antenna's position after angle adjustment. This reduces the risk of the antenna angle changing due to accidental contact or external environmental factors, thereby ensuring the signal reception or transmission strength of both the signal input and signal output devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the signal input device of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the signal output device of this utility model;

[0020] Figure 3 This is a schematic diagram of wireless power frequency signal synchronization;

[0021] Figure 4 This is a schematic diagram of the installation structure of the antenna and the device housing of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the connecting component of this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the adjustment component of this utility model;

[0024] Figure 7 This is a schematic diagram of the internal structure of the extrusion assembly of this utility model.

[0025] In the diagram: 101, equipment housing; 102, antenna; 201, connecting seat; 202, mounting seat; 203, limit bolt; 204, connecting wire; 301, adjusting hole; 302, spline groove; 303, spline plate; 304, adjusting rod; 401, spring; 402, fixing ring; 5, rotating ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figures 1-7The diagram shows a wireless power frequency signal synchronizer, which includes a signal input device and a signal output device, wherein the signal input device is wirelessly connected to multiple signal output devices; it also includes:

[0029] The signal input device includes a device housing 101 and a power frequency signal input interface, a battery, a charging and discharging module, a power indicator, a charging port / serial port, a power frequency signal acquisition and conversion module, a wireless time synchronization module, a power indicator, a connection indicator, and a synchronization indicator disposed on the device housing 101.

[0030] The signal output device includes a device housing 101 and a power frequency signal output interface, a power frequency zero-crossing phase output interface, a battery, a charging and discharging module, a power indicator, a charging port / serial port, a power frequency signal conversion and generation module, a wireless time synchronization module, a power indicator, a connection indicator, and a synchronization indicator disposed on the device housing 101.

[0031] Both the signal input device and the signal output device are provided with an antenna 102 in the device housing 101. The device housing 101 is provided with a connection component for connecting the antenna 102 and an adjustment component provided in the connection component for adjusting the angle of the antenna 102.

[0032] Both the signal input device and the signal output device are provided with antennas 102 in the device housing 101. The device housing 101 is provided with a connection component for connecting the antennas 102 and an adjustment component provided in the connection component for adjusting the angle of the antennas 102.

[0033] It should be noted that using wireless technology to detect partial discharges within substations is simple to operate and convenient to implement, thus improving the efficiency and accuracy of partial discharge detection within substations.

[0034] Please see Figures 1-3 The signal input and signal output devices shown in the diagram can transmit data via serial port or send data to a designated device or broadcast data via AT commands.

[0035] It should be noted here that this facilitates data transmission and connection between signal input devices and signal output devices.

[0036] Please see Figures 4-7 The connection assembly shown in the figure includes a connector 201 fixedly connected to one side of the device housing 101, a mounting base 202 on the side of the connector 201 away from the device housing 101, one end of the antenna 102 being inserted into the mounting base 202, the mounting base 202 being provided with a limiting bolt 203 for limiting the connection of the antenna 102, and the mounting base 202 being provided with a connecting wire 204 for electrically connecting the antenna 102 to the electrical components inside the device housing 101.

[0037] It should be noted here that the connection components are configured for connecting and installing antenna 102.

[0038] It should be emphasized that the antenna 102 and the mounting base 202 are in contact through the elastic electrode sheet, and the connecting wire 204 electrically connects the elastic electrode sheet to the electrical components inside the device housing 101. The connecting wire 204 runs through the entire adjustment assembly and has a certain amount of extension and retraction, thus providing operating space for adjusting the angle of the antenna 102.

[0039] Working principle: When detecting partial discharge in a substation, connect oscilloscope channel 1 to the power frequency signal input interface of the wireless power frequency signal synchronizer to monitor the input power frequency signal. Connect oscilloscope channels 2 and 3 to the power frequency signal output interface and power frequency zero-crossing phase output interface of the signal output device, respectively, to observe the output synchronization signal. Ensure that the power supply of the signal input and signal output devices is normal and has sufficient power, and that the wireless connection between the devices is established and stable. Relevant parameters (such as device address, network configuration, etc.) are set according to the on-site requirements using AT commands.

[0040] Signal acquisition and transmission: The signal input device is installed close to the power frequency signal source in the substation to acquire the actual power frequency signal; after the acquired power frequency signal is processed by the internal power frequency signal acquisition and conversion module, it is wirelessly transmitted to the signal output device through the wireless time synchronization module and antenna 102. During the transmission process, the data is accurately sent to the target signal output device according to the set AT commands.

[0041] Synchronous signal output and monitoring: After receiving the signal from the signal input device, the signal output device generates and outputs a power frequency signal synchronized with the input power frequency signal and a power frequency zero-crossing phase signal by the power frequency signal conversion and generation module. The output power frequency signal is consistent with the input signal in terms of zero point and signal shape. The rising edge of the power frequency zero-crossing phase is consistent with the zero point of the power frequency signal. These output signals are monitored in real time through channels 2 and 3 of the oscilloscope to provide a time reference for subsequent partial discharge signal analysis.

[0042] Partial discharge detection and analysis: Partial discharge detection equipment is used in conjunction with signal output equipment. The output power frequency zero-crossing phase signal is used as a reference to analyze the characteristics of the partial discharge signal, such as discharge time and discharge intensity. Based on these characteristics, it is determined whether partial discharge has occurred, as well as its location and severity.

[0043] Detection principle

[0044] Power frequency signal synchronization principle: The wireless power frequency signal synchronizer achieves time synchronization between the signal input device and the signal output device through its internal wireless time synchronization module. After processing, the phase information of the power frequency signal acquired by the signal input device is accurately transmitted to the signal output device via wireless communication. Based on the received phase information, the signal output device generates a signal synchronized with the input power frequency signal, ensuring the consistency of power frequency signals acquired at different locations in time, and providing a stable time reference for partial discharge detection.

[0045] Partial Discharge Detection Principle: During the operation of substation equipment, partial discharge generates high-frequency pulse current signals. These partial discharge signals are correlated with the power frequency signal and typically appear within a specific phase range of the power frequency signal. By acquiring accurate power frequency zero-crossing phase signals, the detection equipment can determine the phase position of the partial discharge signal. Based on the pattern of partial discharge signal occurrence within the power frequency cycle and the changes in discharge intensity, the characteristics and location of the partial discharge can be analyzed and determined.

[0046] Example 2

[0047] Please see Figures 4-7 This embodiment further illustrates Example 1. The adjustment component shown in the figure includes an adjustment hole 301 opened in the connecting seat 201. A spline groove 302 is opened on the inner wall of the adjustment hole 301 near the equipment housing 101. A spline plate 303 is slidably connected to the spline groove 302. An adjustment rod 304 is connected to one end of the spline plate 303 away from the equipment housing 101. One end of the adjustment rod 304 is connected to the mounting seat 202. The adjustment hole 301 is provided with a pressing component for pressing the spline plate 303.

[0048] It should be noted here that by adjusting the settings of the components, the antenna 102 can be used at an angle that is adjusted, while the antenna 102 is also limited after the angle is adjusted. This reduces the risk that the antenna 102 may change its angle due to accidental contact or external environmental factors, thereby ensuring the signal reception or transmission strength of the signal input and output devices.

[0049] Please see Figures 4-7 The extrusion assembly shown in the figure includes a fixing ring 402 fixedly connected to the side wall of the adjusting rod 304. A spring 401 is provided on the side of the fixing ring 402 away from the spline plate 303. The spring 401 is sleeved on the side wall of the adjusting rod 304. The end of the spring 401 away from the fixing ring 402 is connected to the inner wall of the adjusting hole 301 through a rotating assembly.

[0050] It should be noted here that the extrusion assembly is designed to provide elastic extrusion for the spline plate 303.

[0051] Please see Figures 4-7 The rotating component in the figure is a rotating ring 5, which is rotatably connected to the inner wall of the adjusting hole 301 away from the equipment housing 101. The end of the spring 401 away from the fixed ring 402 is connected to the rotating ring 5.

[0052] It should be noted here that the rotating ring 5 is designed to prevent the spring 401 from being twisted or deformed during the adjustment of the antenna 102.

[0053] Working principle: When it is necessary to adjust the operating angle of the antenna 102, the antenna 102 is first pulled away from the side of the device housing 101, which causes the spline plate 303 to move out of the spline groove 302. During the process of moving the spline plate 303 out of the spline groove 302, the spring 401 will be compressed, which will cause the spring 401 to deform under force and form elastic force.

[0054] When the antenna 102 is pulled to the appropriate position, it can be rotated as needed. After rotating the antenna 102 to the required operating angle, the pulling of the antenna 102 can be released. Then, under the elastic action of the spring 401, the antenna 102 is moved closer to the device housing 101, so that the spline plate 303 is inserted into the spline groove 302. In the process of adjusting the operating angle of the antenna 102, the limiting action of the spline plate 303 and the spline groove 302 is used to limit the antenna 102 after the angle adjustment, thereby reducing the risk of the antenna 102 changing its operating angle due to accidental contact or external environmental factors, thus ensuring the signal reception or transmission strength of the signal input device and the signal output device.

[0055] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wireless power frequency signal synchronizer, comprising a signal input device and a signal output device, the signal input device wirelessly connecting a plurality of signal output devices; characterized in that, Also include: The signal input device includes a device shell (101) and a power frequency signal input interface, a battery, a charge and discharge module, an electric quantity indication, a charging port / serial port, a power frequency signal acquisition and conversion module, a wireless time synchronization module, a power supply indication, a connection indication and a synchronization indication arranged in the device shell (101); The signal output device includes a device shell (101) and a power frequency signal output interface, a power frequency zero-crossing phase output interface, a battery, a charge and discharge module, an electric quantity indication, a charging port / serial port, a power frequency signal conversion and generation module, a wireless time synchronization module, a power supply indication, a connection indication and a synchronization indication arranged in the device shell (101); The device shell (101) of the signal input device and the signal output device is provided with an antenna (102), and the device shell (101) is provided with a connecting assembly for connecting the antenna (102) and an adjusting assembly arranged in the connecting assembly for angle adjusting of the antenna (102).

2. A wireless power signal synchronizer according to claim 1, wherein: The connecting assembly includes a connecting seat (201) fixedly connected to one side of the device shell (101), and the connecting seat (201) is provided with a mounting seat (202) away from the device shell (101), one end of the antenna (102) is inserted into the mounting seat (202), the mounting seat (202) is provided with a limiting bolt (203) for limiting the connection of the antenna (102), and the mounting seat (202) is provided with a connecting wire (204) for electrically connecting the antenna (102) with the internal electrical components of the device shell (101).

3. A wireless power signal synchronizer according to claim 2, wherein: The adjusting assembly includes an adjusting hole (301) opened in the connecting seat (201), a spline groove (302) is opened in the inner wall of one side of the adjusting hole (301) close to the device shell (101), the spline groove (302) is slidably connected with a spline plate (303), one end of the spline plate (303) away from the device shell (101) is connected with an adjusting rod (304), one end of the adjusting rod (304) is connected with the mounting seat (202), and the adjusting hole (301) is provided with an extrusion assembly for extruding the spline plate (303).

4. A wireless power signal synchronizer according to claim 3, wherein: The extrusion assembly includes a fixed ring (402) fixedly connected to the side wall of the adjusting rod (304), the fixed ring (402) is provided with a spring (401) away from the spline plate (303), the spring (401) is sleeved on the side wall of the adjusting rod (304), and one end of the spring (401) away from the fixed ring (402) is connected with the inner wall of the adjusting hole (301) through a rotating assembly.

5. A wireless power signal synchronizer according to claim 4, wherein: The rotating assembly is a rotating ring (5), the rotating ring (5) is rotatably connected to the inner wall of one side of the adjusting hole (301) away from the device shell (101), and one end of the spring (401) away from the fixed ring (402) is connected with the rotating ring (5).

6. A wireless power signal synchronizer according to claim 1, wherein: The signal input device and the signal output device can transmit data through the serial port, or send data to a specified device or broadcast data through AT instructions.

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