CN112504353A - High-voltage circuit breaker and state monitoring device thereof - Google Patents
High-voltage circuit breaker and state monitoring device thereof Download PDFInfo
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- CN112504353A CN112504353A CN202011580789.4A CN202011580789A CN112504353A CN 112504353 A CN112504353 A CN 112504353A CN 202011580789 A CN202011580789 A CN 202011580789A CN 112504353 A CN112504353 A CN 112504353A
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Abstract
The invention discloses a high-voltage circuit breaker and a state monitoring device thereof. The state monitoring device of the high-voltage circuit breaker comprises: the system comprises a voiceprint sensing module, a mechanical characteristic detection module, a partial discharge detection module, a temperature sensing module, a visual monitoring module and a data acquisition module; the voiceprint sensing module is arranged outside the circuit breaker and used for acquiring voiceprint vibration signals around the circuit breaker; the mechanical characteristic detection module is arranged in the operating mechanism box and used for detecting a current signal when an operating mechanism in the operating mechanism box acts; the partial discharge detection module is arranged in the operating mechanism box and used for detecting a partial discharge signal; the temperature sensing module is used for acquiring a temperature signal of the current transformer; the visual monitoring module is arranged outside the high-voltage circuit breaker and used for acquiring a video signal of the high-voltage circuit breaker; the data acquisition module is used for transmitting each acquired signal to the terminal equipment. The invention realizes the real-time monitoring of the running state of the high-voltage circuit breaker.
Description
Technical Field
The embodiment of the invention relates to the technical field of power systems, in particular to a high-voltage circuit breaker and a state monitoring device thereof.
Background
The high-voltage circuit breaker not only can cut off or close no-load current and load current in a high-voltage circuit, but also can cut off overload current and short-circuit current through the action of a relay protection device when a system breaks down so as to ensure the safe and stable operation of a power system. High-voltage circuit breakers, which may include oil circuit breakers, sulfur hexafluoride circuit breakers, compressed air circuit breakers, vacuum circuit breakers, etc., have a fairly perfect arc extinguishing structure and sufficient current breaking capability.
The high-voltage circuit breaker is important electrical equipment in a power system, and in long-term operation, the high-voltage circuit breaker can cause various faults after installation and commissioning due to various reasons, so that hidden dangers are brought to reliable operation of the high-voltage circuit breaker, and safe and stable operation of a power grid is influenced.
Disclosure of Invention
The embodiment of the invention provides a high-voltage circuit breaker and a state monitoring device thereof, which are used for monitoring the operation state of the high-voltage circuit breaker in real time and reducing the influence of various faults of the high-voltage circuit breaker on the operation of a power grid.
In a first aspect, an embodiment of the present invention provides a device for monitoring a state of a high-voltage circuit breaker, including: the system comprises a voiceprint sensing module, a mechanical characteristic detection module, a partial discharge detection module, a temperature sensing module, a visual monitoring module and a data acquisition module; the voiceprint sensing module, the mechanical characteristic detection module, the partial discharge detection module, the temperature sensing module and the visual monitoring module are all in communication connection with the data acquisition module;
the high-voltage circuit breaker comprises a current transformer, a circuit breaker and an operating mechanism box;
the voiceprint sensing module is arranged outside the circuit breaker and used for acquiring voiceprint vibration signals around the circuit breaker; the mechanical characteristic detection module is arranged in the operating mechanism box and used for detecting a current signal when an operating mechanism in the operating mechanism box acts; the partial discharge detection module is arranged inside the operating mechanism box and used for detecting partial discharge signals generated by partial discharge of a high-voltage electrified body in the high-voltage circuit breaker; the temperature sensing module is arranged on the current transformer and used for acquiring a temperature signal of the current transformer; the visual monitoring module is arranged outside the high-voltage circuit breaker and used for acquiring a video signal of the high-voltage circuit breaker;
the data acquisition module is used for acquiring the voiceprint vibration signal, the current signal, the partial discharge signal, the temperature signal and the video signal and transmitting the acquired signals to terminal equipment.
Optionally, the voiceprint sensing module includes a voiceprint sensing unit, a processing unit, a storage unit, a power supply unit and a signal transmitting unit; the voiceprint sensing unit, the storage unit, the power supply unit and the signal transmitting unit are all electrically connected with the processing unit;
the voiceprint sensing unit comprises a digital acceleration sensor and an analog acceleration sensor, the digital acceleration sensor is used for acquiring a digital acceleration sensing signal, and the analog acceleration sensor is used for acquiring an analog acceleration sensing signal;
the processing unit is used for generating the voiceprint vibration signal according to the digital acceleration sensing signal and the analog acceleration sensing signal;
the storage unit is used for storing the voiceprint vibration signal;
the power supply unit is used for supplying power to the voiceprint sensing module;
the voiceprint sensing module is in wireless communication connection with the data acquisition module through the signal transmitting unit, and transmits the voiceprint vibration signal to the data acquisition module through the signal transmitting unit.
Optionally, the power supply unit comprises a super capacitor and a lithium sub-battery; the state monitoring device further comprises a photovoltaic assembly, and the photovoltaic assembly is electrically connected with the super capacitor; the super capacitor is used for storing electric energy converted by the photovoltaic module, and the super capacitor and the lithium sub-battery are both used for supplying power to the voiceprint sensing module.
Optionally, the visual monitoring module includes a camera, and the state monitoring device further includes a photovoltaic module electrically connected to the camera.
Optionally, the mechanical property detection module comprises a first current sensor, a second current sensor and a third current sensor;
the first current sensor is used for detecting secondary side current;
the operating mechanism box comprises a switching-on and switching-off coil and a motor, and the second current sensor is arranged on the switching-on and switching-off coil and used for detecting a current signal of the switching-on and switching-off coil when the circuit breaker acts; the third current sensor is arranged on the motor and used for detecting a current signal of the motor when the circuit breaker acts.
Optionally, the partial discharge detection module includes a ground electric wave sensor and an ultrasonic sensor, where the ground electric wave sensor is configured to detect a ground electric wave sensing signal in the operating mechanism box, and the ultrasonic sensor is configured to detect an ultrasonic sensing signal in the operating mechanism box.
Optionally, the temperature sensing module includes a temperature measuring sensor, and the temperature sensing module is in wireless communication connection with the data acquisition module through the temperature measuring sensor.
Optionally, the data acquisition module comprises a voiceprint vibration signal collector, a current signal collector, a partial discharge signal collector, a temperature signal collector and a video signal collector;
the voiceprint vibration signal collector is in wireless communication connection with the voiceprint sensing module and is used for collecting the voiceprint vibration signals; the current signal collector is in communication connection with the mechanical characteristic detection module and is used for collecting the current signal; the partial discharge signal collector is in communication connection with the partial discharge detection module and is used for collecting the partial discharge signals; the temperature signal collector is in wireless communication connection with the temperature sensing module and is used for collecting the temperature signal; the video signal collector is in communication connection with the visual monitoring module and is used for collecting the video signals.
Optionally, the data acquisition module further includes a communication device, and the communication device is electrically connected to the voiceprint vibration signal collector, the current signal collector, the partial discharge signal collector, the temperature signal collector, and the video signal collector; the data acquisition module transmits each acquired signal to terminal equipment through the communication equipment;
the communication equipment is integrated with the voiceprint vibration signal collector, the current signal collector, the partial discharge signal collector, the temperature signal collector and the video signal collector and is arranged in the operating mechanism box.
In a second aspect, an embodiment of the present invention further provides a high voltage circuit breaker, including the state monitoring apparatus for a high voltage circuit breaker according to the first aspect.
The high-voltage circuit breaker and the state monitoring device thereof provided by the embodiment of the invention carry out comprehensive diagnosis on the working state of the high-voltage circuit breaker by the state monitoring device, particularly utilize a voiceprint sensing module to acquire a voiceprint vibration signal around the circuit breaker so as to monitor whether abnormal vibration of invisible defects exists in the circuit breaker, utilize a mechanical characteristic detection module to detect a current signal when an operating mechanism in an operating mechanism box acts so as to break whether mechanical faults exist in the operating mechanism, utilize a partial discharge detection module to detect a partial discharge signal generated by partial discharge of a high-voltage charged body in the high-voltage circuit breaker so as to judge whether a partial discharge phenomenon exists in the operating mechanism box, utilize a temperature sensing module to acquire a temperature signal of a current transformer so as to judge whether a temperature abnormality phenomenon exists in the high-voltage circuit breaker, and utilize a visual monitoring module to acquire a video signal of the high-, whether the high-voltage circuit breaker has the abnormal operation condition or not is judged, the real-time monitoring on the operation state of the high-voltage circuit breaker is realized, the operation condition of the high-voltage circuit breaker is facilitated to be confirmed in time, the high-voltage circuit breaker is maintained in time when the high-voltage circuit breaker breaks down, the influence of the faults of the high-voltage circuit breaker on the operation of a power grid is reduced, and the safe and stable operation of the power grid is facilitated to be guaranteed.
Drawings
Fig. 1 is a schematic block diagram of a state monitoring device for a high-voltage circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a high-voltage circuit breaker according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voiceprint sensing module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another condition monitoring device for a high-voltage circuit breaker according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another state monitoring device for a high-voltage circuit breaker according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
The embodiment of the invention provides a state monitoring device of a high-voltage circuit breaker, which is suitable for the condition of monitoring the state of the high-voltage circuit breaker in real time. Fig. 1 is a schematic block structure diagram of a state monitoring apparatus for a high-voltage circuit breaker according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a high-voltage circuit breaker according to an embodiment of the present invention, and with reference to fig. 1 and fig. 2, the state monitoring apparatus for a high-voltage circuit breaker includes: the system comprises a voiceprint sensing module 10, a mechanical characteristic detection module 20, a partial discharge detection module 30, a temperature sensing module 40, a visual monitoring module 50 and a data acquisition module 60; the voiceprint sensing module 10, the mechanical characteristic detection module 20, the partial discharge detection module 30, the temperature sensing module 40 and the visual monitoring module 50 are all in communication connection with the data acquisition module 60; the high-voltage circuit breaker comprises a current transformer 81, a circuit breaker 82 and an operating mechanism box 83; the voiceprint sensing module 10 is arranged outside the circuit breaker 82 and used for acquiring a voiceprint vibration signal around the circuit breaker 82; the mechanical characteristic detection module 20 is arranged inside the operating mechanism box 83 and is used for detecting a current signal when an operating mechanism in the operating mechanism box 83 acts; the partial discharge detection module 30 is arranged inside the operating mechanism box 83 and used for detecting a partial discharge signal generated by partial discharge of a high-voltage electrified body in the high-voltage circuit breaker; the temperature sensing module 40 is arranged on the current transformer 81 and is used for acquiring a temperature signal of the current transformer 81; the visual monitoring module 50 is arranged outside the high-voltage circuit breaker and used for acquiring a video signal of the high-voltage circuit breaker; the data acquisition module 60 is configured to acquire a voiceprint vibration signal, a current signal, a partial discharge signal, a temperature signal, and a video signal, and transmit each acquired signal to the terminal device 70.
Specifically, the high voltage circuit breaker in the present embodiment may be a 220kV high voltage circuit breaker, such as an Air Insulated Switchgear (AIS). The high-voltage circuit breaker comprises a current transformer 81, a circuit breaker 82 and an operating mechanism box 83, wherein the current transformer 81 is an instrument for converting a large primary side current into a small secondary side current according to the electromagnetic induction principle to measure, the circuit breaker 82 is a switching device which can close, bear and open a current under the condition of a normal loop and can close, bear and open a current under the condition of an abnormal loop within a specified time, an operating mechanism, a cable and the like of the high-voltage circuit breaker are arranged in the operating mechanism box 83, and the operating mechanism can comprise a switching-on/off coil, an energy storage motor, a spring operating mechanism of the circuit breaker and the like. The terminal device 70 may be a computer or a mobile terminal device such as a mobile phone.
The voiceprint sensing module 10 is disposed outside the circuit breaker 82, and the voiceprint vibration signal around the circuit breaker 82 acquired by the voiceprint sensing module 10 can be a voiceprint vibration signal inside the circuit breaker 82 and near the circuit breaker 82, and the voiceprint vibration signal can be a low-frequency vibration signal, for example, a mechanical vibration signal of about 100 Hz. The data acquisition module 60 can acquire the voiceprint vibration signal acquired by the voiceprint sensing module 10 and transmit the voiceprint vibration signal to the terminal device 70, so that the working state of the high-voltage circuit breaker can be diagnosed according to the voiceprint vibration signal, and whether the abnormal vibration of the invisible defect exists in the circuit breaker 82 or not is monitored.
The mechanical characteristic detection module 20 is disposed inside the operating mechanism box 83, for example, a switching coil is disposed inside the operating mechanism box 83, a current signal detected by the mechanical characteristic detection module 20 when the operating mechanism operates may be a current signal on the switching coil when the circuit breaker operates, and the data acquisition module 60 may acquire the current signal acquired by the mechanical characteristic detection module 20 and transmit the current signal to the terminal device 70, so as to diagnose whether a mechanical fault such as a malfunction or a failure of the operating mechanism (e.g., the circuit breaker) exists according to the current signal.
The partial discharge detection module 30 is disposed inside the operating mechanism box 83, for example, in an insulation system of a high-voltage circuit breaker, the electric field intensity of each part is different, and if the electric field intensity of a certain region is too large and reaches or exceeds the breakdown field intensity, a discharge phenomenon, i.e., partial discharge, occurs in the region. The partial discharge detection module 30 may detect a partial discharge signal generated by partial discharge of a high-voltage charged body in the high-voltage circuit breaker, and the data acquisition module 60 may acquire the partial discharge signal acquired by the partial discharge detection module 30 and transmit the partial discharge signal to the terminal device 70, so as to determine whether a partial discharge phenomenon exists in the operating mechanism box 83 according to the partial discharge signal.
The temperature sensing module 40 is disposed on the current transformer 81, and when the temperature of the high voltage circuit breaker is abnormal, the current transformer 81 is shown at first, and the temperature sensing module 40 acquires a temperature signal of the current transformer 81, so that the data acquisition module 60 acquires the temperature signal and transmits the temperature signal to the terminal device 70, so as to determine whether the temperature of the high voltage circuit breaker is abnormal according to the temperature signal.
Because the trouble that takes place among the high voltage circuit breaker, except electrical fault and mechanical fault, some are that the manual maloperation causes in addition, consequently can set up visual monitoring module 50 in the outside of high voltage circuit breaker, carry out the direct-viewing monitoring to the state of opening and shutting of high voltage circuit breaker, acquire the video signal of high voltage circuit breaker through visual monitoring module 50 to make data acquisition module 60 gather this video signal, and transmit this video signal to terminal equipment 70, whether there is the unusual condition of operation in order to judge the high voltage circuit breaker according to this video signal.
The technical scheme of the embodiment of the invention is that the working state of the high-voltage circuit breaker is comprehensively diagnosed by a state monitoring device, specifically, a voiceprint sensing module is used for acquiring a voiceprint vibration signal around the circuit breaker to monitor whether abnormal vibration of invisible defects exists in the circuit breaker, a mechanical characteristic detection module is used for detecting a current signal when an operating mechanism in an operating mechanism box acts to break off whether mechanical faults exist in the operating mechanism, a partial discharge detection module is used for detecting a partial discharge signal generated by partial discharge of a high-voltage charged body in the high-voltage circuit breaker to judge whether a partial discharge phenomenon exists in the operating mechanism box, a temperature sensing module is used for acquiring a temperature signal of a current transformer to judge whether a temperature abnormal phenomenon exists in the high-voltage circuit breaker, a visual monitoring module is used for acquiring a video signal of the high-voltage circuit breaker to judge whether an abnormal operation condition exists in the high-voltage circuit breaker, the real-time monitoring of the running state of the high-voltage circuit breaker is realized, the running condition of the high-voltage circuit breaker is timely confirmed, and the high-voltage circuit breaker is timely maintained when the high-voltage circuit breaker breaks down, so that the influence of the fault of the high-voltage circuit breaker on the running of a power grid is reduced, and the safe and stable running of the power grid is guaranteed.
Fig. 3 is a schematic structural diagram of a voiceprint sensing module according to an embodiment of the present invention, and fig. 3 schematically illustrates an embodied structure of the voiceprint sensing module in fig. 1, and in conjunction with fig. 1 to 3, optionally, the voiceprint sensing module 10 is configured to include a voiceprint sensing unit 110, a processing unit 120, a storage unit 130, a power supply unit 140, and a signal transmitting unit 150; the voiceprint sensing unit 110, the storage unit 130, the power supply unit 140 and the signal transmitting unit 150 are all electrically connected with the processing unit 120; the voiceprint sensing unit 110 includes a digital acceleration sensor 111 and an analog acceleration sensor 112, the digital acceleration sensor 111 is used for acquiring a digital acceleration sensing signal, and the analog acceleration sensor 112 is used for acquiring an analog acceleration sensing signal; the processing unit 120 is configured to generate a voiceprint vibration signal according to the digital acceleration sensing signal and the analog acceleration sensing signal; the storage unit 130 is used for storing the voiceprint vibration signal; the power supply unit 140 is used for supplying power to the voiceprint sensing module 10; the voiceprint sensing module 10 is connected with the data acquisition module 60 through the signal transmitting unit 150 in a wireless communication manner, and transmits the voiceprint vibration signal to the data acquisition module 60 through the signal transmitting unit 150.
Specifically, with reference to fig. 1 to 3, the voiceprint sensing unit 110 may be an acceleration sensor, and the voiceprint sensing unit 110 specifically includes a digital acceleration sensor 111 and an analog acceleration sensor 112, wherein the digital acceleration sensor 111 may be a three-axis digital acceleration sensor, and the analog acceleration sensor 112 may be a single-axis analog acceleration sensor. By means of the digital acceleration sensor 111 and the analog acceleration sensor 112, low frequency vibration signals, for example mechanical vibration signals of around 100Hz, inside the circuit breaker 82 and in the vicinity of the circuit breaker 82 can be monitored. The processing unit 120 may be a central processing unit of the voiceprint sensing unit 110, the storage unit 130 may be a memory, and the signal transmitting unit 150 may be a wireless signal transmitter, such as a signal transmitter based on bluetooth or wireless radio frequency technology. The digital acceleration sensor 111 transmits the acquired digital acceleration sensing signal to the processing unit 120, the analog acceleration sensor 112 transmits the acquired analog acceleration sensing signal to the processing unit 120, the processing unit 120 processes the signal, the digital acceleration sensing signal and the analog acceleration sensing signal are converted into corresponding voiceprint vibration signals, the voiceprint vibration signals are transmitted to the data acquisition module 60 through the signal transmitting unit 150, and meanwhile, the voiceprint vibration signals can be stored in the storage unit 130. When the high-voltage circuit breaker normally works, the voiceprint vibration signal monitored by the voiceprint sensing unit 110 should use 100Hz as the main frequency, the proportion of other frequencies is small, and when components with other frequencies except 100Hz obviously exist in the voiceprint vibration signal, it is indicated that the high-voltage circuit breaker has abnormal state, for example, invisible defects exist in the high-voltage circuit breaker, and manual detection is needed.
With reference to fig. 1 to 3, on the basis of the above embodiment, optionally, the power supply unit 140 is provided to include a super capacitor 141 and a lithium sub-battery 142; the state monitoring device further comprises a photovoltaic module (not shown in the figure), and the photovoltaic module is electrically connected with the super capacitor 141; the super capacitor 141 is used for storing electric energy converted by the photovoltaic module, and both the super capacitor 141 and the lithium subcell 142 are used for supplying power to the voiceprint sensing module 10. The super capacitor 141 can store electric energy converted by the photovoltaic module, so that the super capacitor 141 supplies power to the voiceprint sensing unit 110, thereby saving energy. When the electric quantity stored in the super capacitor 141 is insufficient, the power can be supplied to the voiceprint sensing unit 110 through the lithium sub-battery 142, so that the normal use of the voiceprint sensing unit 110 is ensured.
Fig. 4 is a schematic structural diagram of another state monitoring apparatus for a high-voltage circuit breaker according to an embodiment of the present invention, which may be an embodied structural diagram of the state monitoring apparatus shown in fig. 1, wherein structures in a first region 910, a second region 920 and a third region 930 form the state monitoring apparatus 100 for the high-voltage circuit breaker, and a fourth region 940 includes a terminal device 70 connected to the state monitoring apparatus 100 for the high-voltage circuit breaker. With reference to fig. 1 and 4, optionally, the visual monitoring module 50 includes a camera 51, and the status monitoring device further includes a photovoltaic module (not shown in the figure), and the photovoltaic module is electrically connected to the camera 51.
Specifically, the visual monitoring module 50 is composed of a camera 51, the camera 51 can be installed outside the high-voltage circuit breaker, a specific setting area can be determined by combining the field situation, and it is enough to ensure that the camera 51 can acquire the video signal of the whole high-voltage circuit breaker. The opening and closing state of the high-voltage circuit breaker can be visually monitored through the camera 51, and the abnormal operation of the equipment can be solved. The condition monitoring device may also include a photovoltaic module that is capable of converting light energy into electrical energy and powering the camera 51.
In conjunction with fig. 1, 2 and 4, optionally, the mechanical characteristic detection module 20 is provided to include a first current sensor 210, a second current sensor 220 and a third current sensor 230; the first current sensor 210 is used to detect a secondary-side current; the operating mechanism box 83 comprises a switching-on and switching-off coil and a motor, and the second current sensor 220 is arranged on the switching-on and switching-off coil and used for detecting a current signal of the switching-on and switching-off coil when the circuit breaker 82 acts; the third current sensor 230 is provided on the motor for detecting a current signal of the motor when the circuit breaker 82 is actuated.
The first current sensor 210, the second current sensor 220, and the third current sensor 230 are disposed in the operating mechanism case 83, and the first current sensor 210, the second current sensor 220, and the third current sensor 230 may be hall current sensors, such as hall current sensors in an open loop card type, for example, and the first current sensor 210 may be mounted on a power line in the operating mechanism case 83 to detect a secondary side current of the high voltage circuit breaker. The second current sensor 220 may be directly mounted on the opening/closing coil of the operating mechanism case 83, and the third current sensor 230 may be directly mounted on the power supply line of the motor of the operating mechanism case 83, which may be an energy storage motor. When the circuit breaker performs the opening and closing operation, the energy storage motor operates in advance to store energy for the spring operating mechanism in the operating mechanism box 83, and then the opening and closing operation is performed. The function of the energy storage motor is therefore very important, and the implementation of the circuit breaker function depends to a large extent on the operating state of the energy storage motor. When the closing action of the breaker is finished, the energy storage circuit is switched on, and the spring starts to work so as to store energy required by opening and closing. High voltage circuit breakers typically use an electromagnet as the first stage control element for operation and a dc control power supply. When current passes through the switching-on and switching-off coil, the electromagnet core is attracted by magnetic force to open or close the circuit breaker, and the current of the switching-on and switching-off coil contains information which can be used for diagnosing mechanical faults. Therefore, the fault sign can be judged according to the current signal of the opening and closing coil detected by the second current sensor 220 when the circuit breaker 82 operates, the current signal of the energy storage motor detected by the third current sensor 230 when the circuit breaker 82 operates and the time interval of the acquired signals, so that whether the mechanical fault such as the action failure or the misoperation exists in the operating mechanism can be effectively diagnosed.
With reference to fig. 1, 2 and 4, optionally, the partial discharge detection module 30 includes a ground electric wave sensor 310 and an ultrasonic sensor 320, where the ground electric wave sensor 310 is used for detecting a ground electric wave sensing signal in the operating mechanism box 83, and the ultrasonic sensor 320 is used for detecting an ultrasonic sensing signal in the operating mechanism box 83.
Specifically, the ground wave sensor 310 may be a TEV ground wave sensor, and the ultrasonic sensor 320 may be an AE ultrasonic sensor. If a partial discharge occurs in the operating mechanism box 83, an electromagnetic wave propagating along the inner surface of the operating mechanism box 83 is generated and radiated through the gap of the operating mechanism box 83, then the electromagnetic wave propagates continuously along the outer surface of the operating mechanism box 83 to form a ground voltage with a short duration, the ground electric wave sensor 310 can detect a ground electric wave sensing signal, i.e., an electromagnetic wave signal, in the operating mechanism box 83, and whether a partial discharge occurs in the operating mechanism box 83 can be determined by monitoring the amplitude, frequency, etc. of the signal collected by the ground electric wave sensor 310. Meanwhile, when the partial discharge occurs, the acoustic wave signal is propagated to the periphery through the air along with the generation of the acoustic wave signal, so that the ultrasonic sensor 320 can detect the ultrasonic sensor signal in the operating mechanism case 83, and whether or not the partial discharge phenomenon exists in the operating mechanism case 83 can be determined based on the signal.
With reference to fig. 1, 2 and 4, optionally, the temperature sensing module 40 is configured to include a temperature measuring sensor 41, and the temperature sensing module 40 is connected to the data acquisition module 60 through the temperature measuring sensor 41 in a wireless communication manner. The temperature sensor 41 may be a wireless temperature sensor, and the temperature sensor 41 may be installed on the surface of the current transformer 81 in a contact manner to collect a temperature signal of the current transformer 81 and wirelessly transmit the temperature signal to the data collection module 60, so as to determine whether the high voltage circuit breaker has a temperature abnormality according to the temperature signal.
Fig. 5 is a schematic structural diagram of another state monitoring apparatus for a high-voltage circuit breaker according to an embodiment of the present invention, and with reference to fig. 2, fig. 4 and fig. 5, optionally, a data acquisition module 60 is provided, which includes a voiceprint vibration signal acquirer 610, a current signal acquirer 620, a partial discharge signal acquirer 630, a temperature signal acquirer 640 and a video signal acquirer 650; the voiceprint vibration signal collector 610 is in wireless communication connection with the voiceprint sensing module 10 and is used for collecting voiceprint vibration signals; the current signal collector 620 is in communication connection with the mechanical characteristic detection module 20 and is used for collecting current signals; the partial discharge signal collector 630 is in communication connection with the partial discharge detection module 30, and is configured to collect a partial discharge signal; the temperature signal collector 640 is in wireless communication connection with the temperature sensing module 40 and is used for collecting temperature signals; the video signal collector 650 is communicatively connected to the visual monitoring module 50 for collecting video signals.
The data acquisition module 60 further comprises a communication device 660, wherein the communication device 660 is electrically connected with the voiceprint vibration signal collector 610, the current signal collector 620, the partial discharge signal collector 630, the temperature signal collector 640 and the video signal collector 650; the data acquisition module 60 transmits each acquired signal to the terminal device 70 through the communication device 660; the communication device 660 is integrated with the voiceprint vibration signal collector 610, the current signal collector 620, the partial discharge signal collector 630, the temperature signal collector 640, and the video signal collector 650, and is disposed inside the operating mechanism box 83.
Illustratively, in conjunction with fig. 2, 4, and 5, the voiceprint vibration signal collector 610, the current signal collector 620, the partial discharge signal collector 630, the temperature signal collector 640, and the video signal collector 650 may each be a data collector. The voiceprint sensing module 10 can be a wireless voiceprint sensing module, the voiceprint vibration signal collector 610 can be connected with an antenna, and the voiceprint sensing module 10 can wirelessly transmit the acquired voiceprint vibration signal to the voiceprint vibration signal collector 610. The temperature sensor 41 in the temperature signal collector 640 may be a wireless temperature sensor, the temperature signal collector 640 may be connected to the panel antenna 641, and the temperature sensor 41 may wirelessly transmit the acquired temperature signal to the temperature signal collector 640. The video signal collector 650 is not separately shown in fig. 4, but the router 675 in fig. 4 may function as the video signal collector 650 so that the data collection module 60 can collect the video signal acquired by the camera in the visual monitoring module 50 through the router 675. The communication device 660 may be a data communicator or a communication terminal, and the voiceprint vibration signal collector 610, the current signal collector 620, the partial discharge signal collector 630, the temperature signal collector 640, and the video signal collector 650 may respectively transmit respective collected signals to the communication device 660, so as to upload various signals reflecting the operation state of the high voltage circuit breaker to the terminal device 70 through the communication device 660. The terminal device 70 may be a station-side computer.
With reference to fig. 4 and 5, on the basis of the above solutions, optionally, the state monitoring apparatus for a high-voltage circuit breaker further includes an air switch 671, a power adapter 672, a power connection terminal 673, a serial server 674, a router 675, and a network video recorder 71. Specifically, the condition monitoring device may be connected to a power source through an air switch 671, which may be an air circuit breaker for protecting the condition monitoring device. Power adapter 672 is used to convert ac power to dc power to power the condition monitoring device. The power adapter 672 in the first area 910 supplies power to the serial server 674, the voiceprint vibration signal collector 610, the current signal collector 620, the partial discharge signal collector 630 and the temperature signal collector 640 through the power connection terminal 673, and supplies power to the communication device 660 and the camera 51. A power adapter 672 in the third region 930 provides power to the router 675. The serial server 674 can provide a serial port-to-network function, can convert an RS-232/485/422 serial port into a TCP/IP protocol network interface, and realize bidirectional transparent transmission of data between the RS-232/485/422 serial port and the TCP/IP protocol network interface, or support bidirectional transmission of a MOUBUS protocol, so that the serial server 674 can immediately have the TCP/IP network interface function, is connected with a network for data communication, and extends the communication distance of serial devices. The Network Video Recorder 71 is a Network Video Recorder (NVR) which is a store-and-forward part of the Network Video monitoring system, and the NVR can cooperate with the camera 51 to complete Video recording, storing and forwarding functions.
With reference to fig. 2 and fig. 4, on the basis of the above solutions, optionally, the structures in the second area 920 and the third area 930 shown in fig. 4 are integrated to form an intelligent acquisition terminal (i.e., a data acquisition module), the structure in the third area 930 may also form an intelligent communication terminal, and the intelligent acquisition terminal may upload acquired data to the terminal device 70 through the intelligent communication terminal.
Example two
The embodiment of the invention also provides a high-voltage circuit breaker which can comprise the state monitoring device of the high-voltage circuit breaker provided by any embodiment of the invention. Referring to fig. 1 and 2, the state monitoring apparatus of the high voltage circuit breaker includes: the system comprises a voiceprint sensing module 10, a mechanical characteristic detection module 20, a partial discharge detection module 30, a temperature sensing module 40, a visual monitoring module 50 and a data acquisition module 60; the voiceprint sensing module 10, the mechanical characteristic detection module 20, the partial discharge detection module 30, the temperature sensing module 40 and the visual monitoring module 50 are all in communication connection with the data acquisition module 60; the high-voltage circuit breaker comprises a current transformer 81, a circuit breaker 82 and an operating mechanism box 83; the voiceprint sensing module 10 is arranged outside the circuit breaker 82 and used for acquiring a voiceprint vibration signal around the circuit breaker 82; the mechanical characteristic detection module 20 is arranged inside the operating mechanism box 83 and is used for detecting a current signal when an operating mechanism in the operating mechanism box 83 acts; the partial discharge detection module 30 is arranged inside the operating mechanism box 83 and used for detecting a partial discharge signal generated by partial discharge of a high-voltage electrified body in the high-voltage circuit breaker; the temperature sensing module 40 is arranged on the current transformer 81 and is used for acquiring a temperature signal of the current transformer 81; the visual monitoring module 50 is arranged outside the high-voltage circuit breaker and used for acquiring a video signal of the high-voltage circuit breaker; the data acquisition module 60 is configured to acquire a voiceprint vibration signal, a current signal, a partial discharge signal, a temperature signal, and a video signal, and transmit each acquired signal to the terminal device 70.
The high-voltage circuit breaker provided by the embodiment of the invention comprises the state monitoring device of the high-voltage circuit breaker provided by any embodiment of the invention, so that the high-voltage circuit breaker has corresponding functional modules and beneficial effects in the state monitoring device, and further description is omitted.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A condition monitoring device for a high voltage circuit breaker, comprising: the system comprises a voiceprint sensing module, a mechanical characteristic detection module, a partial discharge detection module, a temperature sensing module, a visual monitoring module and a data acquisition module; the voiceprint sensing module, the mechanical characteristic detection module, the partial discharge detection module, the temperature sensing module and the visual monitoring module are all in communication connection with the data acquisition module;
the high-voltage circuit breaker comprises a current transformer, a circuit breaker and an operating mechanism box;
the voiceprint sensing module is arranged outside the circuit breaker and used for acquiring voiceprint vibration signals around the circuit breaker; the mechanical characteristic detection module is arranged in the operating mechanism box and used for detecting a current signal when an operating mechanism in the operating mechanism box acts; the partial discharge detection module is arranged inside the operating mechanism box and used for detecting partial discharge signals generated by partial discharge of a high-voltage electrified body in the high-voltage circuit breaker; the temperature sensing module is arranged on the current transformer and used for acquiring a temperature signal of the current transformer; the visual monitoring module is arranged outside the high-voltage circuit breaker and used for acquiring a video signal of the high-voltage circuit breaker;
the data acquisition module is used for acquiring the voiceprint vibration signal, the current signal, the partial discharge signal, the temperature signal and the video signal and transmitting the acquired signals to terminal equipment.
2. The condition monitoring device according to claim 1, wherein the voiceprint sensing module comprises a voiceprint sensing unit, a processing unit, a storage unit, a power supply unit and a signal transmitting unit; the voiceprint sensing unit, the storage unit, the power supply unit and the signal transmitting unit are all electrically connected with the processing unit;
the voiceprint sensing unit comprises a digital acceleration sensor and an analog acceleration sensor, the digital acceleration sensor is used for acquiring a digital acceleration sensing signal, and the analog acceleration sensor is used for acquiring an analog acceleration sensing signal;
the processing unit is used for generating the voiceprint vibration signal according to the digital acceleration sensing signal and the analog acceleration sensing signal;
the storage unit is used for storing the voiceprint vibration signal;
the power supply unit is used for supplying power to the voiceprint sensing module;
the voiceprint sensing module is in wireless communication connection with the data acquisition module through the signal transmitting unit, and transmits the voiceprint vibration signal to the data acquisition module through the signal transmitting unit.
3. The condition monitoring device according to claim 2, wherein the power supply unit comprises a super capacitor and a lithium sub-battery; the state monitoring device further comprises a photovoltaic assembly, and the photovoltaic assembly is electrically connected with the super capacitor; the super capacitor is used for storing electric energy converted by the photovoltaic module, and the super capacitor and the lithium sub-battery are both used for supplying power to the voiceprint sensing module.
4. The condition monitoring device according to claim 1, wherein the visual monitoring module comprises a camera, and the condition monitoring device further comprises a photovoltaic module electrically connected to the camera.
5. The condition monitoring device according to claim 1, wherein the mechanical characteristic detection module includes a first current sensor, a second current sensor, and a third current sensor;
the first current sensor is used for detecting secondary side current;
the operating mechanism box comprises a switching-on and switching-off coil and a motor, and the second current sensor is arranged on the switching-on and switching-off coil and used for detecting a current signal of the switching-on and switching-off coil when the circuit breaker acts; the third current sensor is arranged on the motor and used for detecting a current signal of the motor when the circuit breaker acts.
6. The condition monitoring device according to claim 1, wherein the partial discharge detection module comprises a ground electric wave sensor and an ultrasonic sensor, the ground electric wave sensor is used for detecting a ground electric wave sensing signal in the operating mechanism box, and the ultrasonic sensor is used for detecting an ultrasonic sensing signal in the operating mechanism box.
7. The condition monitoring device according to claim 1, wherein the temperature sensing module comprises a temperature sensor, and the temperature sensing module is in wireless communication connection with the data acquisition module through the temperature sensor.
8. The state monitoring device according to claim 1, wherein the data acquisition module comprises a voiceprint vibration signal collector, a current signal collector, a partial discharge signal collector, a temperature signal collector and a video signal collector;
the voiceprint vibration signal collector is in wireless communication connection with the voiceprint sensing module and is used for collecting the voiceprint vibration signals; the current signal collector is in communication connection with the mechanical characteristic detection module and is used for collecting the current signal; the partial discharge signal collector is in communication connection with the partial discharge detection module and is used for collecting the partial discharge signals; the temperature signal collector is in wireless communication connection with the temperature sensing module and is used for collecting the temperature signal; the video signal collector is in communication connection with the visual monitoring module and is used for collecting the video signals.
9. The status monitoring device according to claim 8, wherein the data acquisition module further comprises a communication device, and the communication device is electrically connected to the voiceprint vibration signal collector, the current signal collector, the partial discharge signal collector, the temperature signal collector and the video signal collector; the data acquisition module transmits each acquired signal to terminal equipment through the communication equipment;
the communication equipment is integrated with the voiceprint vibration signal collector, the current signal collector, the partial discharge signal collector, the temperature signal collector and the video signal collector and is arranged in the operating mechanism box.
10. A high voltage circuit breaker, characterized in that it comprises a condition monitoring device of a high voltage circuit breaker according to any of claims 1-9.
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| CN202011580789.4A CN112504353A (en) | 2020-12-28 | 2020-12-28 | High-voltage circuit breaker and state monitoring device thereof |
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| CN202011580789.4A CN112504353A (en) | 2020-12-28 | 2020-12-28 | High-voltage circuit breaker and state monitoring device thereof |
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