KR102596469B1 - Online monitoring system including Sensor module - Google Patents

Abstract

Embodiments include a receiving module that receives a measurement signal related to status information from equipment in a substation within the jurisdiction through a channel; a main module that processes and processes the received measurement signal and outputs it; a power and communication module that supplies power to the receiving module and the main module and transmits the processed measurement signal to a remote monitoring device according to a wireless communication protocol; It relates to a sensor module including a power supply hub and a power distribution box that applies PoE (Power over Ethernet) power to the power and communication module, and an online monitoring system including the same.

Description

Online monitoring system including Sensor module}

The present invention relates to a sensor module and an online monitoring system including the same.

Currently, most switchgear in substations are composed of GIS (Gas Insulated Switchgear). To diagnose abnormalities within the GIS, partial discharge (PD) is measured. Partial discharge is a localized discharge phenomenon that occurs in a location other than between electrodes, and refers to a phenomenon that deteriorates the insulation performance inside the GIS and leads to internal failure. This partial discharge can be measured by establishing a comprehensive preventive diagnosis system and diagnosing it in real time, or by entering measurement data into the system by cycle.

In the conventional measurement method, the annual monitoring time for each facility of 170kV GIS is only about 60 minutes, so this measurement method is vulnerable to extracting partial discharge signals and identifying trends in locations where partial discharge occurs intermittently. In addition, the conventional measurement method has reduced diagnostic reliability due to deterioration of the coaxial cable (sensor ↔ terminal assembly panel), frequent cable connection defects, and signal loss per length depending on cable characteristics, and requires continuous manpower for periodic measurement and analog signal collection. There is a problem that waveform interpretation is unclear.

Periodic diagnosis using portable partial discharge diagnostic equipment currently in operation can be used for the purpose of observing changes in partial discharge generation facilities and identifying trends. However, such diagnosis may be impossible to detect when intermittent signals occur or rapid destruction progresses, resulting in a diagnostic gap. Additionally, when portable partial discharge diagnostic equipment is operated for a long time, the amount of measurement data increases, and it may take a long time to load and analyze the data. This results in an increase in manpower input and work time for diagnosis and analysis.

Embodiments provide a sensor module and an online monitoring system including the same that can eliminate gaps in facility diagnosis through constant monitoring throughout the year and reconsider diagnostic reliability.

Additionally, embodiments provide a sensor module that converts measurement data from analog to digital and transmits it wirelessly, and improves the efficiency of facility operation by linking diagnostic data online, and an online monitoring system including the same.

A sensor module according to an embodiment includes a receiving module that receives a measurement signal related to status information from equipment in a substation within the jurisdiction through a channel, a main module that processes and processes the received measurement signal and outputs it, the receiving module, and the main module. Applying PoE (Power over Ethernet) power to the power and communication module, including the power and communication module and power supply hub, which supplies power to the module and transmits the processed measurement signal to a remote monitoring device according to the wireless communication protocol. It may include a power distribution box.

The receiving module includes a protection circuit that protects the receiving module from surges induced through the channel, a filter that removes noise components of the measurement signal, and a measurement signal from which the noise component has been removed according to a preset gain. It may include an amplifier that amplifies and outputs the output.

The filter may include a high-frequency filter that passes only high-frequency components above a second threshold and removes low-frequency noise components, and a low-frequency filter that passes only low-frequency components below a second threshold and removes high-frequency noise components.

The power and communication module includes at least one of an Ethernet module and a Wi-Fi module, and the main module processes the received measurement signal according to either Ethernet communication technology or Wi-Fi communication technology, It can be selectively transmitted to either the Ethernet module or the Wi-Fi module.

The main module may convert the received measurement signal in analog form into a digital signal and transmit the converted measurement signal to the remote monitoring device according to the IEC61850 transmission protocol.

The channel may receive a first channel that receives the measurement signal from the equipment and a second channel that receives the noise signal from the noise sensor.

An online monitoring system according to an embodiment includes a sensor module that collects measurement signals related to status information from facilities of a substation in the jurisdiction, processes the measurement signals according to a wireless communication protocol and transmits them to a wireless AP, and the status of the substation in the jurisdiction. It may include a remote monitoring device that manages and analyzes information to monitor and monitor the status of the equipment, and a server that receives the measurement signal from the sensor module through the wireless AP and transmits the measurement signal to the remote monitoring device. You can.

The sensor module includes a receiving module that receives the measurement signal from the equipment of the substation in the jurisdiction through a channel, a main module that processes and processes the received measurement signal and outputs it, and supplies power to the receiving module and the main module. and a power distribution unit that applies PoE (Power over Ethernet) power to the power and communication module, including a power and communication module and a power supply hub that transmit the processed measurement signal to the wireless AP according to the wireless communication protocol. may include.

The receiving module includes a protection circuit that protects the receiving module from surges induced through the channel, a filter that removes noise components of the measurement signal, and a measurement signal from which the noise component has been removed according to a preset gain. It may include an amplifier that amplifies and outputs the output.

The filter may include a high-frequency filter that passes only high-frequency components above a second threshold and removes low-frequency noise components, and a low-frequency filter that passes only low-frequency components below a second threshold and removes high-frequency noise components.

The power and communication module includes at least one of an Ethernet module and a Wi-Fi module, and the main module processes the received measurement signal according to either Ethernet communication technology or Wi-Fi communication technology, It can be selectively transmitted to either the Ethernet module or the Wi-Fi module.

The main module may convert the received measurement signal in analog form into a digital signal and transmit the converted measurement signal to the remote monitoring device according to the IEC61850 transmission protocol.

The channel may receive a first channel that receives the measurement signal from the equipment and a second channel that receives the noise signal from the noise sensor.

The online monitoring system may receive user input from the user through a user interface (UI) provided by the online monitoring program, and display at least one of the main screen and the environment settings screen on the display according to the user input. there is.

The main screen may include UIs for displaying at least one of a single line diagram, trend information, alarm information, event information, system status, reports, and log information.

The environment setting screen may include UIs for displaying at least one management screen among single-line diagram management, facility management, menu management, user management, reference value management, and CCU restart.

A sensor module and an online monitoring system including the same according to embodiments can reduce costs associated with laying and operating coaxial cables and increase financial effectiveness.

In addition, the sensor module and the online monitoring system including the same according to the embodiments have the advantage of enabling diagnosis and monitoring at all times throughout the year and facilitating diagnostic analysis because there is no loss or distortion of diagnostic data.

The sensor module and the online monitoring system including the same according to the embodiments have the advantage of being able to immediately determine whether the system is defective, easily replacing modules for each faulty part, and being able to further expand without limitation.

Figure 1 is a diagram showing the structure of an online monitoring system according to an embodiment.
FIG. 2 is a block diagram showing the structure of the sensor module shown in FIG. 1.
FIG. 3 is a block diagram showing the structure of the PD module shown in FIG. 2.
Figure 4 is a diagram showing a UI according to an embodiment of the main screen of an online monitoring program used in a remote monitoring device.
Figure 5 is a diagram illustrating a UI according to an embodiment of an environment setting screen of an online monitoring program used in a remote monitoring device.

Hereinafter, embodiments will be described with reference to the drawings. In this specification, when a component (or region, layer, portion, etc.) is referred to as “on,” “connected,” or “coupled to” another component, it means that it is on the other component. This means that they can be directly connected/combined or a third component can be placed between them.

Like reference numerals refer to like elements. Additionally, in the drawings, the thickness, proportions, and dimensions of components are exaggerated for effective explanation of technical content. “And/or” includes all combinations of one or more that the associated configurations may define.

Terms such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component without departing from the scope of the present embodiments, and similarly, the second component may also be named a first component. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Terms such as “below,” “on the lower side,” “above,” and “on the upper side” are used to describe the relationship between the components shown in the drawings. The above terms are relative concepts and are explained based on the direction indicated in the drawings.

"include." Or “to have.” Terms such as are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification, but are intended to indicate the presence of one or more other features, numbers, steps, operations, components, parts, or It should be understood that the existence or addition possibility of combinations of these is not excluded in advance.

Figure 1 is a diagram showing the structure of an online monitoring system according to an embodiment.

Referring to FIG. 1, the online monitoring system 100 according to an embodiment includes at least one sensor module 110 to 140, a power distribution box 200, a wireless AP 300, a server 400, and a remote monitoring device. It may include (500).

The sensor modules 110 to 140 may be built into or attached to equipment of the substation 1 within the jurisdiction and collect measurement signals related to status information of the equipment. In one embodiment, the sensor modules 110 to 140 may receive measurement signals related to status information from equipment using the IEC61850 transmission protocol. The measurement signal collected from the sensor modules 110 to 140 may be an analog signal. For example, the equipment of the substation 1 in the jurisdiction is GIS, and the status information may be information related to partial discharge of the GIS. However, this embodiment is not limited thereto.

In one embodiment, the sensor modules 110 to 140 may be simply attached to or installed on the GIS embedded sensors 10 to 14 according to the prior art and driven. Accordingly, the sensor modules 110 to 140 may receive measurement signals from the built-in sensors 10 to 14. In this case, the online monitoring system according to this embodiment can be easily applied to the substation 1 in the jurisdiction without changing the existing GIS structure.

The sensor modules 110 to 140 may convert the collected analog measurement signals into digital signals. Additionally, the sensor modules 110 to 140 may transmit the converted measurement signal to the outside (for example, the remote monitoring device 500) through wireless communication. The sensor modules 110 to 140 may transmit the collected measurement signals to the outside according to a preset cycle or in real time.

To this end, the sensor modules 110 to 140 may include at least one wireless communication module capable of transmitting and receiving radio frequency signals. For example, the sensor modules 110 to 140 are wireless LAN (WLAN), wireless-fidelity (Wi-Fi), Wi-Fi Direct, Digital Living Network Alliance (DLNA), wireless broadband (WiBro), and world interoperability (WiMAX). with other devices through wireless communication technologies such as Microwave Access), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), and LTE-A (Long Term Evolution-Advanced). Communication can be performed.

Depending on the embodiment, the sensor modules 110 to 140 may be configured to enable wired communication. For example, the sensor modules 110 to 140 can communicate with other devices through wired communication technologies including local area network (LAN), wide area network (WAN), metropolitan area network (MAN), and Ethernet. there is. In this embodiment, the sensor modules 110 to 140 may communicate with other devices through a coaxial cable.

In one embodiment, when the sensor modules 110 to 140 measure partial discharge of the GIS, the performance of the sensor modules 110 to 140 may be as follows.

1) Partial discharge channels: 2 channels (including 1 noise channel)

2) Partial discharge measurement frequency range: 500~1500MHz

3) Partial discharge measurement sensor input range: -55~0dBm

4) Partial discharge channel connector type: N type

5) Signal sampling frequency: 60Hz (1 cycle) × 128 samples = 7,680 samples

6) Communication method: wired/wireless (Ethernet, Wifi selection)

7) Power: PoE (DC48V)

The specific configuration of the sensor modules 110 to 140 will be described in more detail below with reference to FIGS. 2 and 3.

The power distribution box 200 may include a hub for supplying power to the sensor modules 110 to 140.

The sensor modules 110 to 140 are wirelessly connected to a wireless access point (AP) 300 and can transmit status information to the server 400 through the wireless AP 300. The server 400 is the main unit and can transmit status information received from the sensor modules 110 to 140 to the remote monitoring device 500. The server 400 may be a network server, application server, domain server, etc. that can provide the online surveillance system service according to this embodiment.

The remote monitoring device 500 is a mobile phone, a smart phone, a computer, a personal digital assistant (PDA), a tablet PC, an ultrabook, or a wearable device (e.g., a watch type). It may include a terminal (smartwatch), a glass-type terminal (smart glass), a head mounted display (HMD), etc.

The remote monitoring device 500 is connected to the server 400 through a network and can receive data from the server 400. In one embodiment, the network may be, for example, a nuclear power plant dedicated network (FA network). However, this embodiment is not limited to this, and the network may include wireless networks such as WLAN, CDMA, Bluetooth, and satellite communication, and/or wired networks such as LAN, WAN, MAN, and Ethernet.

The remote monitoring device 500 may include software that manages, selects, and analyzes data according to the IEC61850 transmission protocol. The remote monitoring device 500 can manage status information received from the server 400 through the network and analyze it to inspect and monitor the status of the facility.

FIG. 2 is a block diagram showing the structure of the sensor module shown in FIG. 1, and FIG. 3 is a block diagram showing the structure of the measurement module shown in FIG. 2. In FIG. 2 , one sensor module 110 among at least one sensor module 110 to 140 shown in FIG. 1 is shown as an example.

Referring to FIG. 2, the sensor module 110 may include a reception module 111, a power and communication module 112, a main module 113, and a PoE distribution box 114.

The sensor module 110 may be composed of two channels (CH1 and CH2) capable of measuring status, including a noise channel. The receiving module 111 may receive a measurement signal from the built-in sensor 11 of the facility through the first channel (CH1) provided in the sensor module 110. Additionally, the receiving module 111 may receive a noise signal from the noise sensor 11' of the facility through the second channel (CH2) provided in the sensor module 110. The receiving module 111 may appropriately process the measurement signal received from the equipment and transmit it to the main module 113. For example, in one embodiment, the receiving module 111 may be a partial discharge module.

Referring to FIG. 3, in one embodiment, the receiving module 111 may include a protection circuit 1111, a filter 1112, and an amplifier 1113.

The protection circuit 1111 may include, for example, a surge protector. The protection circuit 1111 may protect the receiving module 111 from surges induced through the facility's built-in sensor 11, a cable connected to the first channel (CH1), or a cable connected to the second channel (CH2).

The filter 1112 may include a high-frequency filter (High Pass Filter (HPF)) and a low-frequency filter (Low Pass Filter (LPF)).

The high-frequency filter can remove low-frequency noise components of the measurement signal and/or noise signal output through the protection circuit 1111. As an example, the high-frequency filter may pass only high-frequency components above a first threshold, for example, 500 MHz, in the measurement signal, and remove low-frequency components.

The low-frequency filter may remove the high-frequency noise component of the measurement signal and/or the noise signal from which the low-frequency component has been removed, which is output from a high frequency. As an example, the low-frequency filter may pass only low-frequency components below a second threshold, for example, 1,500 MHz, and remove high-frequency components within the measurement signal.

A measurement signal with high sharpness in the 500 MHz to 1,500 MHz band with noise removed through the filter 1112 can be obtained.

As described above, the sensor module 110 simultaneously secures surge protection function and filter performance and can be applied as an advanced partial discharge module.

The amplifier 1113 may amplify the measurement signal and/or noise signal output from the filter 1112 according to a preset gain and output the amplified signal.

Components of the sensor module 110 may operate based on a synchronization signal. The synchronization signal may be applied to the sensor module 110 through an external power source. In one embodiment, the measurement module 111 may further include a synchronization signal detector 1114 that detects a synchronization signal from the first channel (CH1). When operating in an environment where the sensor module 110 does not receive a synchronization signal from an external power source, the synchronization signal detector 1114 detects the synchronization signal input through the first channel (CH1) and detects the synchronization signal of the sensor module 110. It can be transmitted to components, for example, the main module 113.

The power and communication module 112 converts PoE power input from the outside through the power line into main power and outputs it to each component of the sensor module 110, for example, the measurement module 111 and the main module 113. can do. In one embodiment, the mains power may be a DC power source of approximately 5V and/or 3.3V. However, this embodiment is not limited thereto.

In one embodiment, the power and communication module 112 may include at least one wireless communication module capable of transmitting and receiving radio frequency signals. In the illustrated embodiment, the power and communication module 112 includes an Ethernet module for wired communication and a Wi-Fi module for wireless communication. However, the present embodiment is not limited thereto, and the power and communication module 112 includes Wireless LAN (WLAN), Digital Living Network Alliance (DLNA), Wireless Broadband (WiBro), World Interoperability for Microwave Access (WiMAX), and HSDPA ( At least one module that performs wireless communication according to a wireless communication technology such as High Speed Downlink Packet Access (HSUPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and Long Term Evolution-Advanced (LTE-A), It may include at least one module that performs wired communication according to a wired communication technology such as a local area network (LAN), a wide area network (WAN), or a metropolitan area network (MAN).

Depending on the embodiment, the power and communication module 112 may further include a protection circuit to protect the circuit from surges introduced through internal/external power lines.

In the above, it has been described that power supply and communication are integrated into one power and communication module 112, but this embodiment is not limited thereto. That is, in various embodiments, the sensor module 110 may include a power module that converts external power into main power and supplies it to components, and a communication module that is implemented independently of the power module and performs communication with the outside.

The main module 113 can process and process the signal output from the receiving module 111 according to the synchronization signal. For example, the main module 113 may transmit data included in the measurement signal, for example, status information, to the power and communication module 112 according to a preset protocol. Here, the protocol may be, for example, the IEC61850 transport protocol. In one embodiment, the main module 113 may convert an analog measurement signal into a digital signal and transmit the converted measurement signal to the power and communication module 112 according to a preset protocol.

When the power and communication module 112 includes an Ethernet module and a Wi-Fi module, the main module 113 may select one of the Ethernet module and the Wi-Fi module to transmit data included in the measurement signal. That is, the main module 113 can function to select a communication method based on either Internet or Wi-Fi.

The Ethernet module or Wi-Fi module can transmit the transmission signal received from the main module 113 to the outside according to a wireless communication method. The wireless signal transmitted from the power and communication module 112 may be transmitted to the remote monitoring device 500 through the wireless AP 300, server 400, and network shown in FIG. 1.

In various embodiments, the main module 113 may be further configured to generally control various components provided in the sensor module 110. For example, the main module 113 can control the LED status display, RTC (Real Time Clock), WDT (Watchdog Timer), etc. provided in the sensor module 110.

The PoE distribution box 114 may include a PoE hub for supplying power to the sensor module 110. Additionally, the PoE distribution box 114 may be configured to include a wireless AP, and in this case, the wireless AP may be the wireless AP 300 shown in FIG. 1.

As described above, in the present invention, the sensor module 110 collects status information from equipment and wirelessly transmits the collected status information to the remote monitoring device 500, thereby enabling year-round diagnosis and monitoring of the equipment. You can. Since this invention is based on a wireless communication system, it can reduce costs associated with laying and operating coaxial cables and increase financial effectiveness.

Below, an example of an online monitoring program provided by the remote monitoring device 500 by software running on the remote monitoring device 500 shown in FIG. 1 will be described.

Figure 4 is a diagram showing a UI according to an embodiment of the main screen of an online monitoring program used in a remote monitoring device, and Figure 5 is a diagram showing a UI according to an embodiment of an environment setting screen of an online monitoring program used in a remote monitoring device. This is a drawing showing .

In one embodiment, the online monitoring program may provide a main screen and an environment settings screen. The remote monitoring device 500 may receive user input from the user through a user interface (UI) provided by the online monitoring program, and display at least one of the main screen and the environment settings screen on the display according to the user input. there is.

Referring to FIG. 4, the main screen may include UIs for displaying at least one of a single line diagram, trend information, alarm information, event information, system status, report, and log information. These UIs may be composed of tabs. When a random tab is selected according to user input, a screen corresponding to the tab may be displayed within the central frame.

The single-line diagram screen is a screen that displays a single-line diagram of the substation (1) in the jurisdiction, and can display the real-time waveforms of the sensor modules (110 to 140) and each sensor module (110 to 140) installed in the substation (1) in the jurisdiction. .

The trend information screen may display trend information of the sensor modules 110 to 140 installed in the substation 1 within the jurisdiction.

The alarm information screen can display alarm information of the sensor modules 110 to 140 installed in the substation 1 within the jurisdiction.

The event information screen may display event information of the sensor modules 110 to 140 installed in the substation 1 within the jurisdiction.

The system status screen can display the status and failure history of the online monitoring system 100 according to this embodiment.

The report screen can display the results of events and alarm occurrences during a preset period. In one embodiment, the event and alarm occurrence results displayed on the report screen may be provided as a data file in a preset format. The data file may be, for example, but is not limited to Excel.

The log information screen can display logs generated from the online monitoring system 100. The log information screen can display logs about work items and work details.

Referring to FIG. 5, the environment setting screen may include UIs for displaying at least one management screen among single-line diagram management, facility (device) management, menu management, user management, reference value management, and CCU restart. These UIs may be composed of tabs.

The single-line diagram management screen may display UIs for changing the single-line diagram (for example, adding, copying, deleting, etc.) for the substation 1 in the jurisdiction.

The facility (device) management screen can display UIs for changing (adding, deleting, and changing information, etc.) the facility (device) for the substation 1 in the jurisdiction.

The menu management screen can display UIs that can change the shape, arrangement, size, display/non-display, etc. of the UIs displayed on the screen, taking user convenience into consideration.

The user management screen can display UIs that can change (add, delete, etc.) users of the online program.

The reference value management screen can display UIs for setting event and alarm reference values.

The CCU restart screen can display UIs for changing and restarting the central control unit (CCU).

A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

1: Local substation
100: Online surveillance system
110~140: Sensor module
200: Power distribution box
300: wireless AP
400: Server
500: remote monitoring device

Claims (16)

delete delete delete delete delete delete A sensor module that collects status information and measurement signals related to partial discharge from the GIS equipment of the substation within the jurisdiction, processes the measurement signals according to a wireless communication protocol, and transmits them to the wireless AP;
A remote monitoring device that manages and analyzes the status information of the substation within the jurisdiction and inspects and monitors the status of the facility; and
A server that receives the measurement signal from the sensor module through the wireless AP and transmits the measurement signal to the remote monitoring device,
The sensor module is,
A receiving module that receives measurement signals related to status information from equipment in the substation within the jurisdiction through a channel;
a main module that processes and processes the received measurement signal and outputs it;
a power and communication module that supplies power to the receiving module and the main module and transmits the processed measurement signal to a remote monitoring device according to a wireless communication protocol; and
Equipped with a power distribution box that applies PoE (Power over Ethernet) power to the power and communication module, including a power supply hub,
The receiving module receives a measurement signal from the equipment's built-in sensor through a first channel (CH1), receives a noise signal from the equipment's noise sensor through a second channel (CH2), and receives a synchronization signal from an external power source. When operating in an environment where this is not possible, a synchronization signal input through the first channel (CH1) is detected and transmitted to the main module,
The main module converts the received measurement signal in analog form into a digital signal and transmits the converted measurement signal to the remote monitoring device according to the IEC61850 transmission protocol,
An online surveillance system that receives user input from a user through a user interface (UI) provided by an online surveillance program, and displays at least one of a main screen and a configuration screen on a display according to the user input.
delete The method of claim 7, wherein the receiving module:
a protection circuit that protects the receiving module from surge induced through the first/second channel;
a filter that removes noise components of the measurement signal; and
An online monitoring system comprising an amplifier that amplifies and outputs the measurement signal from which the noise component has been removed according to a preset gain.
The method of claim 9, wherein the filter:
a high-frequency filter that passes only high-frequency components above a second threshold and removes low-frequency noise components; and
An online monitoring system comprising a low-frequency filter that passes only low-frequency components below a second threshold and removes high-frequency noise components. The method of claim 7, wherein the power and communication module,
Comprising at least one of an Ethernet module and a Wi-Fi module,
The main module is,
An online monitoring system that processes the received measurement signal according to either Ethernet communication technology or Wi-Fi communication technology and selectively transmits it to either the Ethernet module or the Wi-Fi module. delete delete delete The method of claim 7, wherein the main screen is:
An online surveillance system including UIs for displaying at least one of a single line diagram, trend information, alarm information, event information, system status, reports, and log information. The method of claim 7, wherein the environment settings screen is:
An online monitoring system including UIs for displaying at least one management screen among single-line diagram management, facility management, menu management, user management, reference value management, and CCU restart.