A monitoring device for distribution network automation terminals

Abstract

The application provides a monitoring device for a power distribution network automation terminal, comprising an infrared detection module for detecting an infrared light source signal at the power distribution network automation terminal; a photoelectric detection module for collecting a photoelectric signal of the power distribution network automation terminal and outputting the photoelectric signal to a processing module in the form of a digital signal; a switch signal detection module for detecting a waveband switch signal of the power distribution network automation terminal; and the processing module for determining potential change information of a target pressure plate according to the received digital signal, judging whether the power distribution network automation terminal is faulty according to the potential change information of the target pressure plate and the waveband switch signal, and generating a corresponding state indication signal according to the fault condition when the power distribution network automation terminal is faulty. According to the state of the hard pressure plate and the control handle of the power distribution network automation terminal in the running, maintenance and stoppage states, the application can issue an intelligent voice alarm through systematic judgment and output a signal to a remote end after a time delay.

Description

Technical Field

[0001] This invention relates to the field of monitoring technology for distribution network automation terminals, and in particular to a monitoring device for distribution network automation terminals. Background Technology

[0002] With the continuous expansion of distribution network construction and the increasing demands of power users for power supply reliability, the construction of distribution network automation is accelerating across the country, and a large number of distribution network automation terminal devices are being put into operation. Distribution network automation terminal devices are the foundation of the distribution network automation system. Due to their remote and dispersed installation locations and poor operating environment, these devices present challenges for operation and maintenance. Therefore, ensuring the normal operation of distribution network automation terminal devices is of paramount importance.

[0003] The normal operation of distribution network automation terminal equipment can be monitored through the distribution network automation system. Functional control panels and handles of these devices can also be monitored via the terminal. However, protection circuit breaker control panels are in a blind spot. These control panels are frequently operated, and any malfunctions pose a significant risk, impacting the normal operation and management of the distribution network automation terminal equipment.

[0004] Currently, distribution network automation terminal equipment only collects the status of functional hard switches and control handles as criteria for protection and monitoring functions. The status of hard switches and control handles is subject to activation / deactivation and switching as needed, and the lack of systematic monitoring of these statuses poses a risk to the operation of distribution network automation terminal equipment and increases the difficulty of equipment inspection.

[0005] To ensure the reliable operation of distribution network automation terminal equipment, the following shortcomings were analyzed from the perspective of equipment operation and maintenance: 1. The opening and closing output pressure plates were not monitored; 2. There was no system detection of the pressure plate status; 3. There was no intelligent alarm for equipment operating conditions. Summary of the Invention

[0006] The purpose of this invention is to propose a monitoring device for distribution network automation terminals. This device is applied to the distribution network automation terminal controller and detects the status of the hard plate and control handle on the distribution network automation terminal controller. Based on the status of the hard plate and control handle in the operation, maintenance, and shutdown states of the distribution network automation terminal, the device systematically determines and issues an intelligent voice alarm.

[0007] On the one hand, a monitoring device for distribution network automation terminals is provided, comprising:

[0008] An infrared detection module is used to detect infrared light source signals at the distribution network automation terminal and output them to the processing module.

[0009] The photoelectric detection module is used to collect the photoelectric signals of the distribution network automation terminal and convert the collected photoelectric signals into digital signals and output them to the processing module.

[0010] A switch signal detection module is used to detect the band switch signal of the distribution network automation terminal and output it to the processing module.

[0011] The processing module is used to determine the potential change information of the target pressure plate in the distribution network automation terminal based on the received digital signal, determine whether the distribution network automation terminal is faulty based on the potential change information of the target pressure plate and the band switch signal, generate a corresponding status indication signal according to the fault condition when the distribution network automation terminal is determined to be faulty, and determine whether the cabinet door status of the distribution network automation terminal is abnormal based on the received infrared light source signal.

[0012] Preferably, it also includes,

[0013] An indicator signal output module is used to remotely control the remote control equipment according to the generated status indicator signal, for restoring the fault state of the distribution network automation terminal; wherein, the control equipment is used to control the distribution network automation terminal and its related equipment;

[0014] The alarm module is used to issue an alarm when the cabinet door status of the power distribution automation terminal is abnormal.

[0015] The power module is used to supply power to the relevant devices within the monitoring equipment.

[0016] Preferably, the infrared detection module is specifically used to collect infrared light source information near the target cabinet door through a preset infrared light source detection device;

[0017] The collected infrared light source information is compared with the preset infrared light source standard to obtain the infrared comparison result.

[0018] Preferably, the photoelectric detection module is specifically used to collect photoelectric signals corresponding to the target pressure plate or control handle through a preset infrared light source detection device.

[0019] The potential change information corresponding to the target pressure plate or the control handle is determined based on the collected photoelectric signals.

[0020] Preferably, the target pressure plate includes at least one or more of the following in the distribution network automation terminal: protection activation hard pressure plate, device maintenance hard pressure plate, interlocking reclosing hard pressure plate, closing output pressure plate, and tripping output pressure plate.

[0021] Preferably, the switch signal detection module is specifically used to collect band switching signals from relevant external devices of the distribution network automation terminal.

[0022] The band switching signals are classified according to the type of related equipment, and the classified band switching signals are output to the processing module.

[0023] Preferably, the processing module is specifically used to determine the state of the target cabinet door by comparing the infrared comparison result with a preset cabinet door state threshold, wherein the state of the target cabinet door includes open or closed;

[0024] When the infrared comparison result is within the preset cabinet door status threshold, the target cabinet door is determined to be closed.

[0025] When the infrared comparison result exceeds the preset cabinet door status threshold, the target cabinet door is determined to be open.

[0026] Preferably, the processing module is specifically used to compare the potential change information with a preset standard potential standard, and determine the state of the target pressure plate or the state of the control handle based on the comparison result;

[0027] The target pressure plate is in the state of being engaged or disengaged, and the control handle is in the state of being in a local or remote position.

[0028] Preferably, the processing module is specifically used to determine the state of the distribution network automation terminal based on the state of the target pressure plate or the state of the control handle;

[0029] When the control handle is in the remote position, the protection activation hard pressure plate is activated, the device maintenance hard pressure plate is deactivated, the closing output pressure plate is activated, the trip output pressure plate is activated, and the interlocking reclosing hard pressure plate is deactivated, the distribution network automation terminal is determined to be in operation.

[0030] When the control handle is in the local position, the protection activation hard pressure plate is activated, the device maintenance hard pressure plate is activated, the closing output pressure plate is deactivated, the trip output pressure plate is deactivated, and the interlocking reclosing hard pressure plate is deactivated, it is determined that the distribution network automation terminal is in maintenance status.

[0031] When the control handle is in the local position and the protection activation hard plate is in the disengaged position, it is determined that the distribution network automation terminal is in a shutdown state.

[0032] Preferably, the processing module is specifically used to determine that the distribution network automation terminal is faulty when the distribution network automation terminal is in a shutdown or maintenance state.

[0033] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0034] The monitoring device for distribution network automation terminals provided by this invention detects the status of the hard plate and control handle on the distribution network automation terminal controller. Based on the status of the hard plate and control handle in the operation, maintenance, and shutdown states of the distribution network automation terminal, it systematically judges and issues an intelligent voice alarm, and outputs a signal to the remote end after a delay.

[0035] Based on changes in light sources, the system determines that the cabinet door is open, indicating the presence of personnel on-site. It then issues a voice alarm, broadcasting the status of the distribution network automation terminal to remind personnel, reducing their patrol workload and improving efficiency. Monitoring the potential changes of the closing and tripping output pressure plates clearly indicates whether the fault lies in primary or terminal equipment, reducing the scope of fault detection work for personnel and further improving efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0037] Figure 1 This is a schematic diagram of a monitoring device for a distribution network automation terminal in an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 The diagram shown is a schematic representation of an embodiment of a monitoring device for a distribution network automation terminal provided by the present invention. In this embodiment, the monitoring device includes:

[0040] An infrared detection module is used to detect infrared light source signals at the distribution network automation terminal and output them to the processing module.

[0041] The photoelectric detection module is used to collect the photoelectric signals of the distribution network automation terminal and convert the collected photoelectric signals into digital signals and output them to the processing module.

[0042] A switch signal detection module is used to detect the band switch signal of the distribution network automation terminal and output it to the processing module.

[0043] The processing module is used to determine the potential change information of the target pressure plate in the distribution network automation terminal based on the received digital signal, determine whether the distribution network automation terminal is faulty based on the potential change information of the target pressure plate and the band switch signal, generate a corresponding status indication signal according to the fault condition when the distribution network automation terminal is determined to be faulty, and determine whether the cabinet door status of the distribution network automation terminal is abnormal based on the received infrared light source signal.

[0044] An indicator signal output module is used to remotely control the remote control equipment according to the generated status indicator signal, for restoring the fault state of the distribution network automation terminal; wherein, the control equipment is used to control the distribution network automation terminal and its related equipment;

[0045] The alarm module is used to issue an alarm when the cabinet door status of the power distribution automation terminal is abnormal.

[0046] The power module is used to supply power to the relevant devices within the monitoring equipment.

[0047] In other words, by detecting the status of the hard switch and control handle on the distribution network automation terminal controller, and based on the status of the hard switch and control handle in the operation, maintenance, and shutdown states of the distribution network automation terminal, a systematic judgment is made to issue an intelligent voice alarm, and after a delay, a signal is output to the remote end. Monitoring the potential changes of the closing output switch and the tripping output switch clearly indicates whether the fault point is located in the primary equipment or the terminal equipment, reducing the scope of fault detection work for personnel and improving work efficiency.

[0048] In a specific embodiment, the infrared detection module is specifically used to collect infrared light source information near the target cabinet door through a preset infrared light source detection device; compare the collected infrared light source information with a preset infrared light source standard to obtain an infrared comparison result.

[0049] Specifically, the processing module is used to determine the state of the target cabinet door by comparing the infrared comparison result with a preset cabinet door state threshold, wherein the state of the target cabinet door includes open or closed; when the infrared comparison result is within the preset cabinet door state threshold, the state of the target cabinet door is determined to be closed; when the infrared comparison result exceeds the preset cabinet door state threshold, the state of the target cabinet door is determined to be open. That is, the distribution network terminal anti-misoperation device determines that the cabinet door is open based on changes in light source, indicating the presence of personnel on-site, and issues a voice alarm, broadcasting the status of the distribution network automation terminal to remind personnel, reducing their patrol workload and improving work efficiency.

[0050] In this embodiment, the switch signal detection module is specifically used to collect band switch signals from external related devices of the distribution network automation terminal, classify the band switch signals according to the type of related devices, and output the classified band switch signals to the processing module. The band switch signals are used to detect the status of external related devices of the distribution network automation terminal, and can be used in conjunction with the status of the internal target pressure plate or the status of the control handle to determine the status of the distribution network automation terminal.

[0051] In this embodiment, the photoelectric detection module is specifically used to collect photoelectric signals corresponding to the target pressure plate or control handle through a preset infrared light source detection device, and determine the potential change information corresponding to the target pressure plate or control handle based on the collected photoelectric signals. The target pressure plate includes at least one or more of the following in the distribution network automation terminal: protection activation hard pressure plate, device maintenance hard pressure plate, interlocking reclosing hard pressure plate, closing output pressure plate, and tripping output pressure plate.

[0052] Specifically, the processing module is used to compare the potential change information with a preset standard potential standard, and determine the state of the target pressure plate or the state of the control handle based on the comparison result; wherein the state of the target pressure plate includes being engaged or disengaged, and the state of the control handle includes being in a local position or a remote position.

[0053] The processing module is specifically used to determine the state of the power distribution automation terminal based on the state of the target pressure plate or the state of the control handle.

[0054] When the control handle is in the remote position, the protection activation hard pressure plate is activated, the device maintenance hard pressure plate is deactivated, the closing output pressure plate is activated, the trip output pressure plate is activated, and the interlocking reclosing hard pressure plate is deactivated, the distribution network automation terminal is determined to be in operation.

[0055] When the control handle is in the local position, the protection activation hard pressure plate is activated, the device maintenance hard pressure plate is activated, the closing output pressure plate is deactivated, the trip output pressure plate is deactivated, and the interlocking reclosing hard pressure plate is deactivated, it is determined that the distribution network automation terminal is in maintenance status.

[0056] When the control handle is in the local position and the protection activation hard plate is in the disengaged position, it is determined that the distribution network automation terminal is in a shutdown state.

[0057] When the distribution network automation terminal is in a shutdown or maintenance state, the distribution network automation terminal is determined to be faulty.

[0058] In other words, according to the regulations for the management of distribution network equipment and the safety production manual for distribution network terminals, the anti-misoperation equipment detects the status of the hard plate and control handle of the distribution network automation terminal. Based on the required status of the plate and handle in the operation status, shutdown status, and maintenance status of the distribution network terminal, it makes intelligent logical judgments. When a selected status does not meet all the requirements, it outputs a voice alarm and outputs a signal to the remote end after a delay.

[0059] From the perspective of distribution network automation terminal operation and management, a forced operating state is necessary to maximize the protection of the distribution network automation terminal's operational status, reduce power supply safety incidents caused by incorrect hard switch status, and eliminate management risks caused by human factors leading to incorrect terminal operation status. Terminal shutdown and maintenance states are results of on-site operations and do not substantially affect the safe and reliable operation of distribution network automation equipment; therefore, using a forced state does not require the implementation of terminal shutdown or maintenance states.

[0060] In the distribution network automation terminal, the functions of each pressure plate and handle are as follows:

[0061] Closing output pressure plate: Engaged, the controller's closing command passes through the pressure plate to close the switch; Deactivated, the controller's closing command cannot pass through the pressure plate to close the switch.

[0062] Trip output pressure plate: When engaged, controller commands pass through the pressure plate and the trip switch; when disengaged, controller commands cannot pass through the pressure plate and the trip switch.

[0063] Protective Input Hard Plate: Input enables the controller's protection function; Output disables the controller's protection function.

[0064] Device maintenance hard switch: When engaged, the controller is in maintenance mode, and telemetry and remote signaling are not sent, while remote control is unsuccessful; when disengaged, the controller's telemetry, remote signaling, and remote control are normal.

[0065] Locking reclosing hard plate: When engaged, the controller's reclosing function is disabled; when disengaged, the controller's reclosing function is enabled.

[0066] Remote position control handle: Remote control switch function is enabled, and the remote control switch works normally; terminal control switch function is disabled.

[0067] The distribution network automation terminal has three states. Based on the distribution network operation procedures and the configuration of the hard switch plates in the terminal, combined with experience in the operation, maintenance, and management of distribution network automation terminals, the terminal equipment status can be divided into three commonly used working states according to the position of the hard switch plates and handles: operating state, inactive state, and maintenance state. For the reclosing interlock switch plate, the hard switch plate status for each working state of the distribution network automation terminal will be engaged or disengaged depending on the actual operating conditions of the distribution network. To ensure the safety and reliability of the operation and maintenance status judgment, the selection position for reclosing engagement in the anti-misoperation module is consistent with the reclosing hard switch plate status, allowing for flexible switching of the reclosing mode.

[0068] Terminal operating status: remote position of control handle, protection activation hard pressure plate engaged, device maintenance hard pressure plate disengaged, closing output pressure plate engaged, tripping output pressure plate engaged, and reclosing interlock hard pressure plate disengaged.

[0069] Terminal maintenance status: Control handle local position, protection activation hard pressure plate activated, device maintenance hard pressure plate activated, closing output pressure plate deactivated, tripping output pressure plate deactivated, and interlocking reclosing hard pressure plate deactivated.

[0070] Terminal shutdown status: control handle in local position, protection engaged hard pressure plate disengaged.

[0071] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0072] The monitoring device for distribution network automation terminals provided by this invention detects the status of the hard plate and control handle on the distribution network automation terminal controller. Based on the status of the hard plate and control handle in the operation, maintenance, and shutdown states of the distribution network automation terminal, it systematically judges and issues an intelligent voice alarm, and outputs a signal to the remote end after a delay.

[0073] Based on changes in light sources, the system determines that the cabinet door is open, indicating the presence of personnel on-site. It then issues a voice alarm, broadcasting the status of the distribution network automation terminal to remind personnel, reducing their patrol workload and improving efficiency. Monitoring the potential changes of the closing and tripping output pressure plates clearly indicates whether the fault lies in primary or terminal equipment, reducing the scope of fault detection work for personnel and further improving efficiency.

[0074] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A monitoring device for distribution network automation terminals, characterized in that, include: An infrared detection module is used to detect infrared light source signals at the distribution network automation terminal and output them to the processing module. The photoelectric detection module is used to collect the photoelectric signals of the distribution network automation terminal and convert the collected photoelectric signals into digital signals and output them to the processing module. A switch signal detection module is used to detect the band switch signal of the distribution network automation terminal and output it to the processing module. The processing module is used to determine the potential change information of the target pressure plate in the distribution network automation terminal based on the received digital signal, determine the activation / deactivation status of the target pressure plate based on the potential change information of the target pressure plate, determine the position status of the control handle based on the band switch signal, determine the working status of the distribution network automation terminal based on the activation / deactivation status of the target pressure plate and the position status of the control handle, determine the fault status of the distribution network automation terminal when the working status is maintenance status or shutdown status, and generate a corresponding status indication signal based on the fault status when the distribution network automation terminal is determined to be faulty. And determine whether the cabinet door status of the distribution network automation terminal is abnormal based on the received infrared light source signal; The target pressure plate includes the protection activation pressure plate, the device maintenance pressure plate, the interlocking reclosing pressure plate, the closing output pressure plate, and the tripping output pressure plate in the distribution network automation terminal; the working status includes the running status, the maintenance status, and the shutdown status. The operating state is as follows: the control handle is in the remote position, the protection activation hard pressure plate is in the activated state, the device maintenance hard pressure plate is in the deactivated state, the closing output pressure plate is in the activated state, the trip output pressure plate is in the activated state, and the interlocking reclosing hard pressure plate is in the deactivated state. The maintenance status is as follows: the control handle is in the local position, the protection activation hard pressure plate is in the activated state, the device maintenance hard pressure plate is in the activated state, the closing output pressure plate is in the deactivated state, the trip output pressure plate is in the deactivated state, and the interlocking reclosing hard pressure plate is in the deactivated state. The shutdown state is as follows: the control handle is in the local position, and the protection activation hard pressure plate is in the deactivated state.

2. The monitoring device as described in claim 1, characterized in that, It also includes, An indicator signal output module is used to remotely control the remote control equipment according to the generated status indicator signal, for restoring the fault state of the distribution network automation terminal; wherein, the control equipment is used to control the distribution network automation terminal and its related equipment; The alarm module is used to issue an alarm when the cabinet door status of the power distribution automation terminal is abnormal. The power module is used to supply power to the relevant devices within the monitoring equipment.

3. The monitoring device as described in claim 2, characterized in that, The infrared detection module is specifically used to collect infrared light source information near the target cabinet door through a preset infrared light source detection device; The collected infrared light source information is compared with the preset infrared light source standard to obtain the infrared comparison result.

4. The monitoring device as described in claim 3, characterized in that, The photoelectric detection module is specifically used to collect photoelectric signals corresponding to the target pressure plate or control handle through a preset infrared light source detection device. The potential change information corresponding to the target pressure plate or the control handle is determined based on the collected photoelectric signals.

5. The monitoring device as described in claim 4, characterized in that, The switch signal detection module is specifically used to collect band switching signals from relevant external devices of the distribution network automation terminal. The band switching signals are classified according to the type of related equipment, and the classified band switching signals are output to the processing module.

6. The monitoring device as described in claim 5, characterized in that, The processing module is specifically used to determine the state of the target cabinet door by comparing the infrared comparison result with a preset cabinet door state threshold, wherein the state of the target cabinet door includes open or closed; When the infrared comparison result is within the preset cabinet door status threshold, the target cabinet door is determined to be closed. When the infrared comparison result exceeds the preset cabinet door status threshold, the target cabinet door is determined to be open.

Images