Disconnecting link state data acquisition method, system and equipment based on laser ranging

Abstract

The invention discloses a disconnecting link state data acquisition method, system and equipment based on laser ranging, and relates to the field of disconnecting link opening and closing state detection.The method comprises the steps that a current signal on a disconnecting link loop is connected into a control cubicle in series, and the current signal is marked as a first electric signal; sending a disconnecting link address and the first electric signal to a master station through the control cubicle; acquiring the distance between the laser range finder and a preset measurement contact point on the knife switch by the laser range finder, and determining the on-off state of the knife switch according to the distance; the laser range finder is a laser range finder at a fixed position, and the disconnecting link opening and closing state comprises an opening state and a closing state; and converting the opening and closing state of the disconnecting link into a second electric signal, and sending the address of the disconnecting link and the second electric signal to the main station through a control cubicle. The reliability of determining the opening and closing state of the disconnecting link is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of disconnector switching state detection, and particularly to a method, system and device for collecting disconnector state data based on laser ranging. Background Art

[0002] During the long-term operation of an open disconnector, after multiple operations, the transmission crank arm may become loose, displaced, deformed, etc., resulting in a situation where the disconnector mechanism and the auxiliary switching indication are in place, but the actual disconnector body is not in place. This may cause malicious misoperation, leading to equipment damage and serious consequences such as busbar voltage loss. At present, the reliability of confirming the disconnector switching state still needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to provide a method, system and device for collecting disconnector state data based on laser ranging, which improves the reliability of determining the disconnector switching state.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A method for collecting disconnector state data based on laser ranging includes:

[0006] Connect the current signal on the disconnector circuit in series to the switch control cabinet, and record the current signal as the first electrical signal; send the disconnector address and the first electrical signal to the master station through the switch control cabinet;

[0007] Collect the distance obtained by the laser rangefinder from the preset measurement contact point on the disconnector, and determine the disconnector switching state according to the distance; the laser rangefinder is a laser rangefinder at a fixed position, and the disconnector switching state includes the open state and the closed state;

[0008] Convert the disconnector switching state into a second electrical signal, and send the disconnector address and the second electrical signal to the master station through the switch control cabinet.

[0009] Optionally, it further includes:

[0010] Determine the first state through the first electrical signal;

[0011] Determine the second state through the second electrical signal; both the second state and the first state include the open state and the closed state;

[0012] Display the second state and the first state of each disconnector according to the disconnector address through the master station.

[0013] Optionally, determining the second state through the second electrical signal specifically includes:

[0014] If the second electrical signal is at a high level, the second state is the closed state;

[0015] If the second electrical signal is at a low level, the second state is the open state.

[0016] Optionally, determining the first state based on the first electrical signal specifically includes:

[0017] If the current represented by the first electrical signal is not 0, the first state is the closed state;

[0018] If the current represented by the first electrical signal is 0, the first state is the open state.

[0019] The present invention also discloses a disconnector state data acquisition system based on laser ranging, including:

[0020] A first electrical signal transmission module, configured to connect the current signal on the disconnector loop in series to the sub-control cabinet, and the current signal is denoted as the first electrical signal; and send the disconnector address and the first electrical signal to the main station through the sub-control cabinet;

[0021] A disconnector opening / closing state determination module, configured to collect the distance obtained by the laser rangefinder from the laser rangefinder to a preset measurement contact point on the disconnector, and determine the disconnector opening / closing state according to the distance; the laser rangefinder is a laser rangefinder at a fixed position, and the disconnector opening / closing state includes an open state and a closed state;

[0022] A second electrical signal transmission module, configured to convert the disconnector opening / closing state into a second electrical signal, and send the disconnector address and the second electrical signal to the main station through the sub-control cabinet.

[0023] The present invention also discloses an electronic device, including a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the disconnector state data acquisition method based on laser ranging according to the above.

[0024] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0025] The present invention acquires two types of data representing the disconnector opening / closing state. The first type is the disconnector opening / closing state determined according to the ranging of the laser rangefinder, and the second type is the disconnector opening / closing state determined according to whether there is current passing through the disconnector loop. By acquiring two types of data representing the disconnector opening / closing state, the reliability of determining the disconnector opening / closing state is improved. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 Schematic flow chart of a method for collecting disconnector status data based on laser ranging provided by an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the mathematical principle for converting digital signals into electrical signals provided by an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the electrical signal waveform provided by an embodiment of the present invention;

[0030] Figure 4 Schematic structural diagram of a system for collecting disconnector status data based on laser ranging provided by an embodiment of the present invention. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] The object of the present invention is to provide a method, system and device for collecting disconnector status data based on laser ranging, which improves the reliability of determining the opening and closing status of the disconnector.

[0033] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0034] As Figure 1 shown, a method for collecting disconnector status data based on laser ranging provided in this embodiment includes the following steps:

[0035] Step 101: Connect the current signal on the disconnector loop in series to the switch control cabinet, and record the current signal as the first electrical signal; send the disconnector address and the first electrical signal to the master station through the switch control cabinet.

[0036] Step 102: Collect the distance obtained by the laser rangefinder from the preset measurement contact point on the disconnecting switch, and determine the opening and closing state of the disconnecting switch according to the distance; the laser rangefinder is a laser rangefinder at a fixed position, and the opening and closing state of the disconnecting switch includes an open state and a closed state.

[0037] Step 103: Convert the opening and closing state of the disconnecting switch into a second electrical signal, and send the disconnecting switch address and the second electrical signal to the master station through the switch control cabinet.

[0038] Each disconnecting switch corresponds to an independent switch control cabinet, that is, the disconnecting switch and the switch control cabinet are in a one-to-one binding relationship. The switch control cabinet transmits the received second electrical signal data and the first electrical signal data to the master station, which is collected by the telemetry system of the master station, and the telemetry system of the master station thus obtains the opening and closing state data of each disconnecting switch.

[0039] Among them, in Step 102, it specifically includes:

[0040] When a closing detection instruction is received, use the laser rangefinder to obtain the distance between the laser rangefinder and the preset measurement contact point on the disconnecting switch, denoted as the closing detection distance. If the closing detection distance is within the first set range, it is determined that the disconnecting switch is in the closed state.

[0041] When a tripping detection instruction is received, use the laser rangefinder to obtain the time series of the distance between the laser rangefinder and the preset measurement contact point on the disconnecting switch. If the distance in the time series increases successively with time until it becomes empty, it is determined that the disconnecting switch is in the open state; when the laser rangefinder cannot obtain the distance from the preset measurement contact point on the disconnecting switch, the corresponding value in the time series is empty.

[0042] The preset measurement contact point is the preset point on the cantilever of the disconnecting switch.

[0043] The method for collecting disconnecting switch state data based on laser ranging in this embodiment further includes:

[0044] Determine the second state through the second electrical signal.

[0045] Determine the first state through the first electrical signal; both the second state and the first state include an open state and a closed state.

[0046] The master station displays the second state and the first state of each disconnecting switch according to the disconnecting switch address.

[0047] Among them, determining the second state through the second electrical signal specifically includes:

[0048] If the second electrical signal is a high level, the second state is the closed state.

[0049] If the second electrical signal is a low level, the second state is the open state.

[0050] The high level and the low level are pre-set electrical signals. For example, the high level is represented by 1 and the low level is represented by 0. That is, in the second electrical signal, 1 represents the closing state and 0 represents the opening state.

[0051] Determining the first state through the first electrical signal specifically includes:

[0052] If the current represented by the first electrical signal is not 0, the first state is the closing state.

[0053] If the current represented by the first electrical signal is 0, the first state is the opening state.

[0054] The master station includes a display, and the display is used to display the switch address, the switch closing / opening state corresponding to the second electrical signal, and the switch closing / opening state corresponding to the first electrical signal.

[0055] Among them, in step 103, the principle of Fourier series transformation is adopted to convert the switch closing / opening state into the second electrical signal, and the process is as follows:

[0056] 1) After the digital signal (the switch closing / opening state) is obtained by the network card driver from the IP module and copied into the buffer in the network card, a command to send the packet is sent to the MAC module. The MAC module will take the packet out of the buffer, add a header and a start frame delimiter at the beginning, and add a frame check sequence (FCS) for error detection at the end, as Figure 2 shown.

[0057] 2) The header is a bit sequence in which 1 and 0 alternate like 10101010…, with a length of 56 bits. Its function is to determine the timing of packet reading. When these 1010 bit sequences are converted into electrical signals by a device such as a communication converter, a waveform as Figure 3 will be formed. When the receiving party receives the signal, it can judge the timing of reading data when encountering such a waveform.

[0058] The present invention collects two kinds of data representing the switch closing / opening state. One is the switch closing / opening state determined according to the distance measurement of the laser rangefinder, and the other is the switch closing / opening state determined according to whether there is current passing through the switch circuit. By collecting two kinds of data representing the switch closing / opening state, the reliability of determining the switch closing / opening state is improved.

[0059] Embodiment 2

[0060] As Figure 4 shown, a switch state data acquisition system based on laser ranging provided in this embodiment includes:

[0061] The first electrical signal transmission module 201 is used to connect the current signal on the knife switch loop in series to the switch control cabinet, and the current signal is denoted as the first electrical signal; the knife switch address and the first electrical signal are sent to the master station through the switch control cabinet.

[0062] The knife switch opening / closing state determination module 202 is used to collect the distance obtained by the laser rangefinder from the preset measurement contact point on the knife switch, and determine the knife switch opening / closing state according to the distance; the laser rangefinder is a laser rangefinder with a fixed position, and the knife switch opening / closing state includes an opening state and a closing state.

[0063] The second electrical signal transmission module 203 is used to convert the knife switch opening / closing state into a second electrical signal, and send the knife switch address and the second electrical signal to the master station through the switch control cabinet.

[0064] Embodiment 3

[0065] An electronic device provided in this embodiment includes a memory and a processor. The memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for collecting knife switch state data based on laser ranging according to Embodiment 1.

[0066] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0067] In this article, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A method for collecting disconnector status data based on laser ranging, characterized in that Including: Connect the current signal on the disconnector loop in series to the switch control cabinet, and the current signal is denoted as the first electrical signal; send the disconnector address and the first electrical signal to the master station through the switch control cabinet; Collect the laser rangefinder to obtain the distance between the laser rangefinder and the preset measurement contact point on the disconnector, and determine the disconnector opening and closing states according to the distance; the laser rangefinder is a laser rangefinder at a fixed position, and the disconnector opening and closing states include an opening state and a closing state; Convert the disconnector opening and closing states into a second electrical signal, and send the disconnector address and the second electrical signal to the master station through the switch control cabinet.

2. The method for collecting disconnector status data based on laser ranging according to claim 1, wherein Also including: Determine the first state through the first electrical signal; Determine the second state through the second electrical signal; both the second state and the first state include an opening state and a closing state; Display the second state and the first state of each disconnector according to the disconnector address through the master station.

3. The method for collecting disconnector state data based on laser ranging according to claim 2, wherein Determine the second state through the second electrical signal, specifically including: If the second electrical signal is a high level, the second state is a closing state; If the second electrical signal is a low level, the second state is an opening state.

4. The method for collecting disconnector status data based on laser ranging according to claim 2, wherein Determine the first state through the first electrical signal, specifically including: If the current represented by the first electrical signal is not 0, the first state is a closing state; If the current represented by the first electrical signal is 0, the first state is an opening state.

5. A disconnector status data acquisition system based on laser ranging, characterized in that, Including: A first electrical signal transmission module for connecting the current signal on the disconnector loop in series to the switch control cabinet, and the current signal is denoted as the first electrical signal; sending the disconnector address and the first electrical signal to the master station through the switch control cabinet; A disconnector opening and closing state determination module for collecting the laser rangefinder to obtain the distance between the laser rangefinder and the preset measurement contact point on the disconnector, and determining the disconnector opening and closing states according to the distance; the laser rangefinder is a laser rangefinder at a fixed position, and the disconnector opening and closing states include an opening state and a closing state; A second electrical signal transmission module for converting the disconnector opening and closing states into a second electrical signal, and sending the disconnector address and the second electrical signal to the master station through the switch control cabinet.

6. An electronic device, characterized in that, Including a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the method for collecting disconnector state data based on laser ranging according to any one of claims 1 to 4.

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