CN117451331A - Breaker mechanical characteristic monitoring device and method based on subsampled data - Google Patents
Breaker mechanical characteristic monitoring device and method based on subsampled data Download PDFInfo
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- CN117451331A CN117451331A CN202311274526.4A CN202311274526A CN117451331A CN 117451331 A CN117451331 A CN 117451331A CN 202311274526 A CN202311274526 A CN 202311274526A CN 117451331 A CN117451331 A CN 117451331A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention discloses a circuit breaker mechanical characteristic monitoring device and method based on secondary sampling data, wherein the device comprises a microprocessor module: the method is used for data processing to obtain the mechanical characteristics of the circuit breaker; breaking pulse signal transmission circuit: the circuit breaker is connected with the microprocessor module and is used for transmitting breaking pulse signals sent by the circuit breaker when faults occur to the microprocessor module; voltage waveform monitoring circuit: the three-phase voltage waveform is connected with the microprocessor module and used for transmitting the three-phase voltage waveform to the microprocessor module in real time; current waveform monitoring circuitry: the three-phase current waveform is connected with the microprocessor module and used for transmitting the three-phase current waveform to the microprocessor module in real time; the method comprises the following steps: 1. detecting breaking pulse signals of a breaker; 2. monitoring current waveforms and voltage waveforms of the circuit breaker; 3. and outputting breaking mechanical characteristics of the circuit breaker. The invention combines the switching-off pulse with the voltage signal and the current signal in the electric quantity to judge, has simple circuit structure, convenient realization and high detection real-time performance, accuracy and reliability.
Description
Technical Field
The invention belongs to the technical field of breaker mechanical property monitoring, and particularly relates to a breaker mechanical property monitoring device and method based on secondary sampling data.
Background
The mechanical characteristics may change after the breaker is switched on and off for many times, if the time of tripping the breaker exceeds a certain limit value, the breaker at the upper level may trip by mistake, and the tripping at the lower level is generated, so that a power failure accident in a larger range is caused, which is not beneficial to the safe production of electric power and generates a larger social risk. Therefore, the mechanical characteristics of the circuit breaker are required to be monitored so as to discover equipment hidden danger in time and maintain the equipment hidden danger, and the safety of power production is better ensured.
In the prior art, the mechanical characteristic monitoring of the circuit breaker is mainly realized based on the detection of the current of the coil of the circuit breaker, and the detection of the vibration signal of the circuit breaker is proposed, but if the mechanical characteristic monitoring of the circuit breaker is simply realized through the detection of the current of the coil of the circuit breaker in the prior art, the problem of low detection accuracy and reliability exists; if the coil current is analyzed by adopting a neural network, wavelet analysis and other methods, or the coil current waveform is combined with the vibration signal waveform in the opening and closing process of the circuit breaker to analyze the mechanical characteristics of the circuit breaker and diagnose faults, the problems of complex method, insufficient real-time detection and the like exist; there are also a number of disadvantages in practical applications.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the mechanical characteristic monitoring device for the circuit breaker based on the secondary sampling data, which adopts a modularized circuit design, has novel and reasonable design and convenient realization, and can be used for combining a breaking pulse with a voltage signal and a current signal in an electric quantity to judge the start and the end of a breaking action and realize the mechanical characteristic monitoring of the circuit breaker.
In order to solve the technical problems, the invention adopts the following technical scheme: a circuit breaker mechanical property monitoring device based on subsampled data, comprising:
and a microprocessor module: the method is used for data processing to obtain the mechanical characteristics of the circuit breaker;
breaking pulse signal transmission circuit: the circuit breaker is connected with the microprocessor module and is used for transmitting breaking pulse signals sent by the circuit breaker when faults occur to the microprocessor module;
voltage waveform monitoring circuit: the three-phase voltage waveform is connected with the microprocessor module and used for transmitting the three-phase voltage waveform to the microprocessor module in real time;
current waveform monitoring circuitry: and the three-phase current waveform is connected with the microprocessor module and used for transmitting the three-phase current waveform to the microprocessor module in real time.
According to the breaker mechanical characteristic monitoring device based on the secondary sampling data, the breaking pulse signal transmission circuit comprises the four-pin photo-coupler isolator U3 and the transient suppression diode D9, the 1 st pin of the four-pin photo-coupler isolator U3 and the negative electrode of the transient suppression diode D9 are connected with a +5V power supply through the resistor R35, the 2 nd pin of the four-pin photo-coupler isolator U3 and the positive electrode of the transient suppression diode D9 are connected to form a pulse signal input end FDMC of the breaking pulse signal transmission circuit, the 3 rd pin of the four-pin photo-coupler isolator U3 is a pulse signal output end FDMC-CPU of the breaking pulse signal transmission circuit and is grounded through the resistor R36, and the 4 th pin of the four-pin photo-coupler isolator U3 is connected with the +3.3V power supply.
In the circuit breaker mechanical property monitoring device based on the subsampled data, the model of the four-pin optocoupler isolator U3 is TLP521, and the model of the transient suppression diode D9 is SMBJ6.0A.
The circuit breaker mechanical characteristic monitoring device based on the subsampled data comprises an A-phase voltage waveform monitoring circuit, a B-phase voltage waveform monitoring circuit and a C-phase voltage waveform monitoring circuit;
the A-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5B, a resistor RI2 is connected to a 2 nd pin of the logic gate chip U9, one end of the resistor RI2 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, and a capacitor CI1 is connected to the resistor RI2 in parallel; the 3 rd pin of the logic gate chip U9 is connected with the positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the A-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module and is used for receiving a switch control signal K1_IA of the A-phase current waveform monitoring circuit output by the microprocessor module, the 5 th pin of the logic gate chip U9 is connected with a resistor RI3, one end of the resistor RI3 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, the resistor RI3 is connected with a capacitor CI3 in parallel, the reverse input end of the operational amplifier UV5B is connected with the output end and then used as the output end of the A-phase current waveform monitoring circuit, and one end of the microprocessor module is connected with the ground through the capacitor CI2 by the sampling resistor RI 1;
the B-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5A, wherein a 7 th pin of the logic gate chip U9 is connected with a resistor RI7, one end of the resistor RI7 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, a capacitor CI4 is connected in parallel on the resistor RI7, an 8 th pin of the logic gate chip U9 is connected with a microprocessor module and is used for receiving a switch control signal K1_IB of the B-phase current waveform monitoring circuit output by the microprocessor module, and a 9 th pin of the logic gate chip U9 is connected with a positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the B-phase current waveform monitoring circuit; a 10 th pin of the logic gate chip U9 is connected with a resistor RI10, one end of the resistor RI10 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, and a capacitor CI7 is connected in parallel with the resistor RI 2; the reverse input end and the output end of the operational amplifier UV5A are connected and then used as the output end of the B-phase current waveform monitoring circuit, the output end is connected with the fifth analog signal input end ADC_In5 of the microprocessor module through a sampling resistor RI8, and one end of the sampling resistor RI8 connected with the microprocessor module is grounded through a capacitor CI 5;
the C-phase current waveform monitoring circuit comprises a logic gate chip U8 with the model of SGM3718 and an operational amplifier UV5C, wherein a resistor RI13 is connected to a 2 nd pin of the logic gate chip U8, one end of the resistor RI13 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, and a capacitor CI10 is connected to the resistor RI13 in parallel; the 3 rd pin of the logic gate chip U8 is connected with the positive input end of the operational amplifier UV5C and is a current signal input end AIN-Ia of the C-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module and is used for receiving a switch control signal K1_IA of the A-phase current waveform monitoring circuit output by the microprocessor module, the 5 th pin of the logic gate chip U8 is connected with a resistor RI12, one end of the resistor RI12 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, the resistor RI12 is connected with a capacitor CI9 IN parallel, the reverse input end of the operational amplifier UV5C is connected with the output end and then used as the output end of the C-phase current waveform monitoring circuit, the output end is connected with a sixth analog signal input end ADC_IN6 of the microprocessor module through a sampling resistor RI9, and one end of the sampling resistor RI9 connected with the microprocessor module is grounded through the capacitor CI 6.
The circuit breaker mechanical characteristic monitoring device based on the subsampled data, wherein the a-phase voltage waveform monitoring circuit further comprises a transient suppression diode D6, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D6;
the B-phase voltage waveform monitoring circuit further comprises a transient suppression diode D7, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D7;
the C-phase voltage waveform monitoring circuit further comprises a transient suppression diode D8, and the output end of the operational amplifier UV2B is grounded through the transient suppression diode D8.
The circuit breaker mechanical characteristic monitoring device based on the subsampled data comprises an A-phase current waveform monitoring circuit, a B-phase current waveform monitoring circuit and a C-phase current waveform monitoring circuit;
the A-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5B, a resistor RI2 is connected to a 2 nd pin of the logic gate chip U9, one end of the resistor RI2 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, and a capacitor CI1 is connected to the resistor RI2 in parallel; the 4 th pin of the logic gate chip U9 is a current signal input end K1_IA of the A-phase current waveform monitoring circuit, the 5 th pin of the logic gate chip U9 is connected with a resistor RI3, one end of the resistor RI3 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, the resistor RI3 is connected with a capacitor CI3 IN parallel, the 3 rd pin of the logic gate chip U9 is connected with a forward input end of an operational amplifier UV5B, a reverse input end of the operational amplifier UV5B is connected with an output end and then used as an output end of the A-phase current waveform monitoring circuit, the output end is connected with a fourth analog signal input end ADC_IN4 of the microprocessor module through a sampling resistor RI1, and one end of the sampling resistor RI1, which is connected with the microprocessor module, is grounded through a capacitor CI 2;
the B-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5A, a 10 th pin of the logic gate chip U9 is connected with a resistor RI10, one end of the resistor RI10 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, and a capacitor CI7 is connected in parallel on the resistor RI 2; the 8 th pin of the logic gate chip U9 is a current signal input end K1_IB of the B-phase current waveform monitoring circuit, the 7 th pin of the logic gate chip U9 is connected with a resistor RI7, one end of the resistor RI7 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, a capacitor CI4 is connected IN parallel on the resistor RI7, the 3 rd pin of the logic gate chip U9 is connected with a forward input end of an operational amplifier UV5A, a reverse input end of the operational amplifier UV5A is connected with an output end and then is used as an output end of the B-phase current waveform monitoring circuit, the output end is connected with a fifth analog signal input end ADC_IN5 of the microprocessor module through a sampling resistor RI8, and one end of the sampling resistor RI8 connected with the microprocessor module is grounded through the capacitor CI 5;
the C-phase current waveform monitoring circuit comprises a logic gate chip U8 with the model of SGM3718 and an operational amplifier UV5C, wherein a resistor RI13 is connected to a 2 nd pin of the logic gate chip U8, one end of the resistor RI13 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, and a capacitor CI10 is connected to the resistor RI13 in parallel; the 4 th pin of the logic gate chip U8 is a current signal input end K1_IC of a C-phase current waveform monitoring circuit, the 5 th pin of the logic gate chip U8 is connected with a resistor RI12, one end of the resistor RI12 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, a capacitor CI9 is connected IN parallel on the resistor RI12, the 3 rd pin of the logic gate chip U8 is connected with a forward input end of an operational amplifier UV5C, a reverse input end of the operational amplifier UV5C is connected with an output end and then used as an output end of the C-phase current waveform monitoring circuit, the output end is connected with a sixth analog signal input end ADC_IN6 of the microprocessor module through a sampling resistor RI9, and one end of the sampling resistor RI9, which is connected with the microprocessor module, is grounded through the capacitor CI 6.
According to the circuit breaker mechanical characteristic monitoring device based on the subsampled data, the A-phase current waveform monitoring circuit further comprises a transient suppression diode D3, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D3;
the B-phase current waveform monitoring circuit further comprises a transient suppression diode D4, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D4;
the C-phase current waveform monitoring circuit further comprises a transient suppression diode D5, and the output end of the operational amplifier UV5C is grounded through the transient suppression diode D5.
The invention also discloses a method for monitoring the mechanical characteristics of the circuit breaker by adopting the circuit breaker mechanical characteristic monitoring device based on the secondary sampling data, which combines the opening pulse with the voltage signal and the current signal in the electric quantity to judge the start and the end of the opening action, when no current exists, the mechanical characteristics are determined by using the voltage waveform reference, and when the voltage waveform and the current waveform are used as references, the mechanical characteristics are determined by using the current waveform reference, and compared with the simple method in the prior art, the accuracy and the reliability are higher; compared with the complex method in the prior art, the method is simple, the detection real-time performance is high, and the accuracy and the reliability are also high; the method comprises the following steps:
step one, detecting breaking pulse signals of a breaker: the circuit breaker sends out breaking pulse signals when in faults, the signals are transmitted to the microprocessor module through the breaking pulse signal transmission circuit, and the microprocessor module takes the time of receiving the signals as the time of starting the mechanical characteristic timing, and the time is recorded as t0;
step two, monitoring current waveforms and voltage waveforms of the circuit breaker: the current waveform monitoring circuit monitors the current in real time, the microprocessor module starts to process the current waveform after receiving the breaking pulse signal, and determines a specific time point of current mutation according to the current actual waveform, and the specific time point is recorded as the time t1 for completing breaking of the circuit breaker by taking the current waveform as a reference;
meanwhile, the voltage waveform monitoring circuit monitors the voltage in real time, the microprocessor module starts to process the voltage waveform after receiving the breaking pulse signal, and determines a specific time point of voltage mutation according to the actual voltage waveform, and the specific time point is recorded as time t2 when the breaker taking the voltage waveform as a reference completes breaking;
step three, outputting breaking mechanical characteristics of the circuit breaker: when the microprocessor module does not receive the current output by the current waveform monitoring circuit and only receives the voltage output by the voltage waveform monitoring circuit, the microprocessor module calculates the time difference TV between t0 and t2, takes the time difference TV as breaking mechanical characteristics, and stores and forwards the breaking mechanical characteristics to the aspect of operation and maintenance;
when the microprocessor module receives the current output by the current waveform monitoring circuit and the voltage output by the voltage waveform monitoring circuit, the microprocessor module calculates the time difference TI between t0 and t1, takes the time difference TI as the breaking mechanical property, and stores and forwards the time difference TI to the aspect of operation and maintenance.
Compared with the prior art, the invention has the following advantages:
1. the circuit breaker mechanical characteristic monitoring device collects voltage and current data from the secondary side, and reversely pushes the circuit breaker mechanical characteristic, and the circuit breaker mechanical characteristic monitoring device comprises a microprocessor module, a breaking pulse signal transmission circuit, a voltage waveform monitoring circuit and a current waveform monitoring circuit, which are all in modularized circuit design, and is novel and reasonable in design and convenient to realize.
2. According to the circuit breaker mechanical characteristic monitoring device and method, the opening pulse is combined with the voltage signal and the current signal in the electric quantity to judge the start and the end of the opening action, when no current exists, the mechanical characteristic is determined by using the voltage waveform reference, and when the voltage waveform and the current waveform are used as references at the same time, the mechanical characteristic is determined by using the current waveform reference, and compared with the simple method in the prior art, the accuracy and the reliability are higher; compared with the complex method in the prior art, the method is simple, the detection real-time performance is high, and the accuracy and the reliability are also high.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a block diagram of a circuit breaker mechanical property monitoring apparatus of the present invention;
FIG. 2 is a schematic circuit diagram of a broken pulse signal transmission circuit according to the present invention;
FIG. 3 is a schematic circuit diagram of a voltage waveform monitoring circuit according to the present invention;
FIG. 4 is a schematic circuit diagram of a current waveform monitoring circuit according to the present invention;
FIG. 5 is a schematic diagram of the timing of the voltage waveform referenced mechanical feature of the present invention;
fig. 6 is a schematic diagram of the timing of the mechanical characteristic of the present invention with reference to the current waveform.
Detailed Description
Example 1:
as shown in fig. 1, the circuit breaker mechanical characteristic monitoring device based on subsampled data of the present embodiment includes:
microprocessor module 1: the method is used for data processing to obtain the mechanical characteristics of the circuit breaker;
breaking pulse signal transmission circuit 2: the circuit breaker is connected with the microprocessor module 1 and is used for transmitting breaking pulse signals sent by the circuit breaker when the circuit breaker fails to the microprocessor module 1;
the microprocessor module 1 takes the signal as a starting signal for judging the timing of the action mechanical characteristics of the circuit breaker, and takes the sending time of the breaking pulse signal as a timing starting point;
voltage waveform monitoring circuit 3: the three-phase voltage waveform generation device is connected with the microprocessor module 1 and is used for transmitting the three-phase voltage waveform to the microprocessor module 1 in real time;
the microprocessor module 1 stores and analyzes the waveform, determines the exact time point when the breaker completes breaking according to the analysis result, completes timing with voltage as reference according to the time, stores the time as the breaking mechanical characteristic of the breaker with voltage as reference in the microprocessor module 1 and transmits the breaking mechanical characteristic to the operation and maintenance aspect;
current waveform monitoring circuit 4: is connected with the microprocessor module 1 and is used for transmitting three-phase current waveforms to the microprocessor module 1 in real time.
The microprocessor module 1 stores and analyzes the waveform, determines the exact time point of the breaker after breaking according to the analysis result, thereby completing the timing of the current aspect, and stores the time as the breaking mechanical characteristic of the breaker taking the current as a reference in the microprocessor module 1 and transmits the breaking mechanical characteristic to the operation aspect.
In this embodiment, as shown in fig. 2, the breaking pulse signal transmission circuit 2 includes a four-pin optocoupler U3 and a transient suppression diode D9, the 1 st pin of the four-pin optocoupler U3 and the negative pole of the transient suppression diode D9 are connected with a +5v power supply through a resistor R35, the 2 nd pin of the four-pin optocoupler U3 and the positive pole of the transient suppression diode D9 are connected to form a pulse signal input end FDMC of the breaking pulse signal transmission circuit 2, the 3 rd pin of the four-pin optocoupler U3 is a pulse signal output end FDMC-CPU of the breaking pulse signal transmission circuit 2 and is grounded through a resistor R36, and the 4 th pin of the four-pin optocoupler U3 is connected with the +3.3v power supply.
In this embodiment, the four-pin optocoupler U3 is of a type TLP521, and the transient suppression diode D9 is of a type SMBJ6.0A.
In specific implementation, the resistance value of the resistor R35 is 4.7kΩ, and the resistance value of the resistor R36 is 10kΩ.
The breaking pulse signal sent by the circuit breaker in the fault is output to the high-low variation level through the four-foot optocoupler isolator U3, so that the isolation between the output end and the input signal is realized, and the breaking pulse signal sent by the circuit breaker in the fault can be stably and reliably transmitted to the microprocessor module 1. By providing the transient suppression diode D9, other elements in the circuit can be effectively protected from the damage of the transient voltage, thereby improving the reliability and stability of the breaking pulse signal transmission circuit 2.
In this embodiment, as shown in fig. 3, the voltage waveform monitoring circuit 3 includes an a-phase voltage waveform monitoring circuit 3, a B-phase voltage waveform monitoring circuit 3, and a C-phase voltage waveform monitoring circuit 3;
the A-phase voltage waveform monitoring circuit 3 comprises an operational amplifier UV1A and an operational amplifier UV1B, wherein the forward input end of the operational amplifier UV1A is a reference voltage input end VREF of the A-phase voltage waveform monitoring circuit 3, and the reverse input end and the output end of the operational amplifier UV1A are connected with the forward input end of the operational amplifier UV1B through a resistor RU10C and grounded through a resistor RU 10D; the reverse input end of the operational amplifier UV1B is connected with a resistor RU10B, and one end of the resistor RU10B is an input end IN_UA of the A-phase voltage waveform monitoring circuit 3; a resistor RU10A and a capacitor CU4 connected IN parallel are connected between the inverting input end and the output end of the operational amplifier UV1B, so that the output end of the operational amplifier UV1B is the output end of the a-phase voltage waveform monitoring circuit 3, and is connected to the first analog signal input end adc_in1 of the microprocessor module 1 through a sampling resistor RU12, and one end of the sampling resistor RU12 connected to the microprocessor module 1 is grounded through a capacitor CU 5;
the operational amplifier UV1A forms a voltage follower circuit, and the operational amplifier UV1B forms a differential amplifying circuit with peripheral capacitance and resistance thereof;
the B-phase voltage waveform monitoring circuit 3 comprises an operational amplifier UV1C and an operational amplifier UV1D, wherein the forward input end of the operational amplifier UV1C is a reference voltage input end VREF of the B-phase voltage waveform monitoring circuit 3, and the reverse input end and the output end of the operational amplifier UV1C are connected with the forward input end of the operational amplifier UV1D through a resistor RU6C and grounded through a resistor RU 6D; the reverse input end of the operational amplifier UV1D is connected with a resistor RU6B, and one end of the resistor RU6B is an input end IN_UB of the A-phase voltage waveform monitoring circuit 3; a resistor RU6A and a capacitor CU2 which are connected IN parallel are connected between the reverse input end and the output end of the operational amplifier UV1D, so that the output end of the operational amplifier UV1D is the output end of the B-phase voltage waveform monitoring circuit 3, the output end is connected with a second analog signal input end ADC_In2 of the microprocessor module 1 through a sampling resistor RU8, and one end of the sampling resistor RU8, which is connected with the microprocessor module 1, is grounded through the capacitor CU 3;
the operational amplifier UV1C forms a voltage follower circuit, and the operational amplifier UV1D forms a differential amplifying circuit with peripheral capacitance and resistance;
the C-phase voltage waveform monitoring circuit 3 comprises an operational amplifier UV2A and an operational amplifier UV2B, wherein the forward input end of the operational amplifier UV2A is a reference voltage input end VREF of the C-phase voltage waveform monitoring circuit 3, and the reverse input end and the output end of the operational amplifier UV2A are connected with the forward input end of the operational amplifier UV2B through a resistor RU7C and grounded through a resistor RU 7D; the reverse input end of the operational amplifier UV2B is connected with a resistor RU7B, and one end of the resistor RU7B is an input end IN_UB of the C-phase voltage waveform monitoring circuit 3; a resistor RU7A and a capacitor CU7 which are connected IN parallel are connected between the reverse input end and the output end of the operational amplifier UV2B, so that the output end of the operational amplifier UV2B is the output end of the C-phase voltage waveform monitoring circuit 3, the output end of the operational amplifier UV2B is connected with a third analog signal input end ADC_In3 of the microprocessor module 1 through a sampling resistor RU9, and one end of the sampling resistor RU9, which is connected with the microprocessor module 1, is grounded through a capacitor CU 8;
the operational amplifier UV2A forms a voltage follower circuit, and the operational amplifier UV2B forms a differential amplifying circuit with peripheral capacitance and resistance thereof;
in the implementation, the operational amplifier UV1A, the operational amplifier UV1B, the operational amplifier UV1C, the operational amplifier UV1D, the operational amplifier UV2A, and the operational amplifier UV2B are implemented by using an operational amplifier chip LM2902 PT; resistance RU10A, resistance RU10B, resistance RU10C, and resistance RU10D, resistance RU6A, resistance RU6B, resistance RU6C, and resistance RU6D, and resistance RU7A, resistance RU7B, resistance RU7C, and resistance RU7D are all 10kΩ; the resistance values of the sampling resistor RU12, the sampling resistor RU8 and the sampling resistor RU9 are all 1kΩ; the capacitor CU5, the capacitor CU3 and the capacitor CU8 are all 102 capacitors, namely the capacitance value is 1000pF;
in specific implementation, the reference voltage input terminal VREF of the a-phase voltage waveform monitoring circuit 3, the reference voltage input terminal VREF of the B-phase voltage waveform monitoring circuit 3, and the reference voltage input terminal VREF of the C-phase voltage waveform monitoring circuit 3 are all 1.6V.
In this embodiment, the a-phase voltage waveform monitoring circuit 3 further includes a transient suppression diode D6, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D6;
the B-phase voltage waveform monitoring circuit 3 further comprises a transient suppression diode D7, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D7;
the C-phase voltage waveform monitoring circuit 3 further includes a transient suppression diode D8, and the output end of the operational amplifier UV2B is grounded through the transient suppression diode D8.
In specific implementation, the model numbers of the transient suppression diode D6, the transient suppression diode D7 and the transient suppression diode D8 are PESD3V3S1BA-N.
By arranging the transient suppression diode D6, the reliability and stability of the A-phase voltage waveform detection circuit 3 for detecting the A-phase voltage waveform are improved; by arranging the transient suppression diode D7, the reliability and stability of the B-phase voltage waveform detection circuit 3 for detecting the B-phase voltage waveform are improved; by providing the transient suppression diode D8, the reliability and stability of the C-phase voltage waveform detection by the C-phase voltage waveform monitoring circuit 3 are improved.
In this embodiment, as shown in fig. 4, the current waveform monitoring circuit 4 includes an a-phase current waveform monitoring circuit 4, a B-phase current waveform monitoring circuit 4, and a C-phase current waveform monitoring circuit 4;
the A-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5B, a resistor RI2 is connected to a 2 nd pin of the logic gate chip U9, one end of the resistor RI2 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, and a capacitor CI1 is connected to the resistor RI2 in parallel; the 3 rd pin of the logic gate chip U9 is connected with the positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the A-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module 1 and is used for receiving a switch control signal K1_IA of the A-phase current waveform monitoring circuit output by the microprocessor module 1, the 5 th pin of the logic gate chip U9 is connected with a resistor RI3, one end of the resistor RI3 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, a capacitor CI3 is connected in parallel on the resistor RI3, the reverse input end of the operational amplifier UV5B is connected with the output end and then used as the output end of the A-phase current waveform monitoring circuit, and one end of the microprocessor module 1 is connected with the ground through the capacitor CI2 by the sampling resistor RI 1;
the B-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5A, wherein a 7 th pin of the logic gate chip U9 is connected with a resistor RI7, one end of the resistor RI7 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, a capacitor CI4 is connected in parallel on the resistor RI7, an 8 th pin of the logic gate chip U9 is connected with the microprocessor module 1 and is used for receiving a switch control signal K1_IB of the B-phase current waveform monitoring circuit output by the microprocessor module 1, and a 9 th pin of the logic gate chip U9 is connected with a positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the B-phase current waveform monitoring circuit; a 10 th pin of the logic gate chip U9 is connected with a resistor RI10, one end of the resistor RI10 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, and a capacitor CI7 is connected in parallel with the resistor RI 2; the reverse input end and the output end of the operational amplifier UV5A are connected and then used as the output end of the B-phase current waveform monitoring circuit, the output end is connected with the fifth analog signal input end ADC_In5 of the microprocessor module 1 through a sampling resistor RI8, and one end of the sampling resistor RI8 connected with the microprocessor module 1 is grounded through a capacitor CI 5;
the C-phase current waveform monitoring circuit comprises a logic gate chip U8 with the model of SGM3718 and an operational amplifier UV5C, wherein a resistor RI13 is connected to a 2 nd pin of the logic gate chip U8, one end of the resistor RI13 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, and a capacitor CI10 is connected to the resistor RI13 in parallel; the 3 rd pin of the logic gate chip U8 is connected with the positive input end of the operational amplifier UV5C and is a current signal input end AIN-Ia of the C-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module 1 and is used for receiving a switch control signal K1_IA of the A-phase current waveform monitoring circuit output by the microprocessor module 1, the 5 th pin of the logic gate chip U8 is connected with a resistor RI12, one end of the resistor RI12 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, a capacitor CI9 is connected IN parallel on the resistor RI12, the reverse input end and the output end of the operational amplifier UV5C are connected and then used as the output end of the C-phase current waveform monitoring circuit, the output end is connected with a sixth analog signal input end ADC_IN6 of the microprocessor module 1 through a sampling resistor RI9, and one end of the sampling resistor RI9 connected with the microprocessor module 1 is grounded through the capacitor CI 6.
In the specific implementation, the resistor RI2, the resistor RI10 and the resistor RI13 are 82 Ω and 1% accurate resistor, the resistor RI3, the resistor RI12 and the resistor RI17 are 26.1 Ω and 1% accurate resistor, and the capacitor CI1, the capacitor CI3, the capacitor CI4, the capacitor CI7, the capacitor CI9 and the capacitor CI10 are 104 capacitors, namely the capacitance value is 0.1uF; the resistance values of the resistor RI1, the resistor RI8 and the resistor RI9 are all 1kΩ; the capacitors CI2, CI5 and CI6 are 102 capacitors, namely the capacitance value is 1000pF;
in specific implementation, the reference voltage input terminal VREF of the a-phase current waveform monitoring circuit 4, the reference voltage input terminal VREF of the B-phase current waveform monitoring circuit 4, and the reference voltage input terminal VREF of the C-phase current waveform monitoring circuit 4 are all 1.6V.
In this embodiment, the a-phase current waveform monitoring circuit 4 further includes a transient suppression diode D3, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D3;
the B-phase current waveform monitoring circuit 4 further comprises a transient suppression diode D4, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D4;
the C-phase current waveform monitoring circuit 4 further comprises a transient suppression diode D5, and the output end of the operational amplifier UV5C is grounded through the transient suppression diode D5.
In specific implementation, the model numbers of the transient suppression diode D3, the transient suppression diode D4 and the transient suppression diode D5 are PESD3V3S1BA-N.
By arranging the transient suppression diode D3, the reliability and stability of the A-phase current waveform detection circuit 4 for detecting the A-phase current waveform are improved; by arranging the transient suppression diode D4, the reliability and stability of the B-phase current waveform detection circuit 4 for detecting the B-phase current waveform are improved; by providing the transient suppression diode D5, the reliability and stability of the C-phase current waveform detection by the C-phase current waveform monitoring circuit 4 are improved.
Example 2:
the method for monitoring the mechanical characteristics of the circuit breaker by using the circuit breaker mechanical characteristic monitoring device based on the subsampled data of the embodiment comprises the following steps:
step one, detecting breaking pulse signals of a breaker: the circuit breaker sends a breaking pulse signal when in fault, the signal is transmitted to the microprocessor module 1 through the breaking pulse signal transmission circuit 2, and the microprocessor module 1 takes the time of the received signal as the time of starting the mechanical characteristic timing, and the time is marked as t0;
step two, monitoring current waveforms and voltage waveforms of the circuit breaker: the current waveform monitoring circuit 4 monitors the current in real time, the microprocessor module 1 starts to process the current waveform after receiving the breaking pulse signal, and determines a specific time point of current mutation according to the current actual waveform, and records the specific time point as the time t1 for completing breaking of the circuit breaker by taking the current waveform as a reference;
meanwhile, the voltage waveform monitoring circuit 3 monitors the voltage in real time, the microprocessor module 1 starts to process the voltage waveform after receiving the breaking pulse signal, and determines a specific time point of voltage mutation according to the actual voltage waveform, and records the specific time point as time t2 for completing breaking of the circuit breaker by taking the voltage waveform as a reference;
step three, outputting breaking mechanical characteristics of the circuit breaker: when the microprocessor module 1 does not receive the current output by the current waveform monitoring circuit 4 and only receives the voltage output by the voltage waveform monitoring circuit 3, the microprocessor module 1 calculates the time difference TV between t0 and t2, takes the time difference TV as breaking mechanical characteristics, and stores and forwards the time difference TV to the aspect of operation and maintenance; the change of the mechanical characteristics is found in time, the operation and maintenance actions are carried out in time, and the mechanical characteristics of the circuit breaker are ensured to be stable and reliable, so that the safety of power production is ensured; as shown in fig. 5;
TI is the breaking mechanical property taking the current waveform as a reference;
when the microprocessor module 1 receives the current output by the current waveform monitoring circuit 4 and the voltage output by the voltage waveform monitoring circuit 3, the microprocessor module 1 calculates the time difference TI between t0 and t1, takes the time difference TI as the breaking mechanical property, discovers the change of the mechanical property in time, and develops operation and maintenance actions in time, so that the mechanical property of the circuit breaker is ensured to be stable and reliable, and the safety of power production is ensured; as shown in fig. 6.
TV is the breaking mechanical property with voltage waveform as reference.
In the case of no current in actual use, the method given in the third step above, namely, when no current exists, the mechanical characteristic is determined by using the voltage waveform reference, and when the voltage waveform and the current waveform are simultaneously used as references, the mechanical characteristic is determined by using the current waveform reference.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A circuit breaker mechanical property monitoring device based on subsampled data, comprising:
microprocessor module (1): the method is used for data processing to obtain the mechanical characteristics of the circuit breaker;
breaking pulse signal transmission circuit (2): the circuit breaker is connected with the microprocessor module (1) and is used for transmitting breaking pulse signals sent by the circuit breaker when the circuit breaker fails to the microprocessor module (1);
voltage waveform monitoring circuit (3): the three-phase voltage waveform generation device is connected with the microprocessor module (1) and used for transmitting the three-phase voltage waveform to the microprocessor module (1) in real time;
current waveform monitoring circuit (4): is connected with the microprocessor module (1) and is used for transmitting three-phase current waveforms to the microprocessor module (1) in real time.
2. The circuit breaker mechanical property monitoring device based on subsampled data according to claim 1, wherein: the breaking pulse signal transmission circuit (2) comprises a four-pin photo-coupler isolator U3 and a transient suppression diode D9, wherein the 1 st pin of the four-pin photo-coupler isolator U3 and the negative electrode of the transient suppression diode D9 are connected with a +5V power supply through a resistor R35, the 2 nd pin of the four-pin photo-coupler isolator U3 and the positive electrode of the transient suppression diode D9 are connected to form a pulse signal input end FDMC of the breaking pulse signal transmission circuit (2), the 3 rd pin of the four-pin photo-coupler isolator U3 is a pulse signal output end FDMC-CPU of the breaking pulse signal transmission circuit (2) and is grounded through a resistor R36, and the 4 th pin of the four-pin photo-coupler isolator U3 is connected with the +3.3V power supply.
3. The circuit breaker mechanical property monitoring device based on subsampled data according to claim 2, wherein: the model of the four-foot photo-coupler isolator U3 is TLP521, and the model of the transient suppression diode D9 is SMBJ6.0A.
4. The circuit breaker mechanical property monitoring device based on subsampled data according to claim 1, wherein: the voltage waveform monitoring circuit (3) comprises an A-phase voltage waveform monitoring circuit (3), a B-phase voltage waveform monitoring circuit (3) and a C-phase voltage waveform monitoring circuit (3);
the A-phase voltage waveform monitoring circuit (3) comprises an operational amplifier UV1A and an operational amplifier UV1B, wherein the forward input end of the operational amplifier UV1A is a reference voltage input end VREF of the A-phase voltage waveform monitoring circuit (3), and the reverse input end of the operational amplifier UV1A is connected with the output end and then connected with the forward input end of the operational amplifier UV1B through a resistor RU10C and grounded through a resistor RU 10D; the reverse input end of the operational amplifier UV1B is connected with a resistor RU10B, and one end of the resistor RU10B is an input end IN_UA of the A-phase voltage waveform monitoring circuit (3); a resistor RU10A and a capacitor CU4 which are connected IN parallel are connected between the reverse input end and the output end of the operational amplifier UV1B, so that the output end of the operational amplifier UV1B is the output end of the A-phase voltage waveform monitoring circuit (3), the output end is connected with a first analog signal input end ADC_In1 of the microprocessor module (1) through a sampling resistor RU12, and one end of the sampling resistor RU12, which is connected with the microprocessor module (1), is grounded through a capacitor CU 5;
the B-phase voltage waveform monitoring circuit (3) comprises an operational amplifier UV1C and an operational amplifier UV1D, wherein the forward input end of the operational amplifier UV1C is a reference voltage input end VREF of the B-phase voltage waveform monitoring circuit (3), and the reverse input end of the operational amplifier UV1C is connected with the output end and then connected with the forward input end of the operational amplifier UV1D through a resistor RU6C and grounded through a resistor RU 6D; the reverse input end of the operational amplifier UV1D is connected with a resistor RU6B, and one end of the resistor RU6B is an input end IN_UB of the A-phase voltage waveform monitoring circuit (3); a resistor RU6A and a capacitor CU2 which are connected IN parallel are connected between the reverse input end and the output end of the operational amplifier UV1D, so that the output end of the operational amplifier UV1D is the output end of the B-phase voltage waveform monitoring circuit (3), the output end is connected with a second analog signal input end ADC_In2 of the microprocessor module (1) through a sampling resistor RU8, and one end of the sampling resistor RU8, which is connected with the microprocessor module (1), is grounded through the capacitor CU 3;
the C-phase voltage waveform monitoring circuit (3) comprises an operational amplifier UV2A and an operational amplifier UV2B, wherein the forward input end of the operational amplifier UV2A is a reference voltage input end VREF of the C-phase voltage waveform monitoring circuit (3), and the reverse input end of the operational amplifier UV2A is connected with the output end and then connected with the forward input end of the operational amplifier UV2B through a resistor RU7C and grounded through a resistor RU 7D; the reverse input end of the operational amplifier UV2B is connected with a resistor RU7B, and one end of the resistor RU7B is an input end IN_UB of the C-phase voltage waveform monitoring circuit (3); the parallel resistor RU7A and the capacitor CU7 are connected between the reverse input end and the output end of the operational amplifier UV2B, so that the output end of the operational amplifier UV2B is the output end of the C-phase voltage waveform monitoring circuit (3), the output end is connected with the third analog signal input end ADC_In3 of the microprocessor module (1) through the sampling resistor RU9, and one end of the sampling resistor RU9, which is connected with the microprocessor module (1), is grounded through the capacitor CU 8.
5. The circuit breaker mechanical property monitoring device based on subsampled data according to claim 1, wherein: the A-phase voltage waveform monitoring circuit (3) further comprises a transient suppression diode D6, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D6;
the B-phase voltage waveform monitoring circuit (3) further comprises a transient suppression diode D7, and the output end of the operational amplifier UV1B is grounded through the transient suppression diode D7;
the C-phase voltage waveform monitoring circuit (3) further comprises a transient suppression diode D8, and the output end of the operational amplifier UV2B is grounded through the transient suppression diode D8.
6. The circuit breaker mechanical property monitoring device based on subsampled data according to claim 1, wherein: the current waveform monitoring circuit (4) comprises an A-phase current waveform monitoring circuit, a B-phase current waveform monitoring circuit and a C-phase current waveform monitoring circuit;
the A-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5B, a resistor RI2 is connected to a 2 nd pin of the logic gate chip U9, one end of the resistor RI2 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, and a capacitor CI1 is connected to the resistor RI2 in parallel; the 3 rd pin of the logic gate chip U9 is connected with the positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the A-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module (1) and is used for receiving a switch control signal K1_IA which is output by the microprocessor module (1) and is used for controlling the A-phase current waveform monitoring circuit, the 5 th pin of the logic gate chip U9 is connected with a resistor RI3, one end of the resistor RI3 is a reference voltage input end VREF of the A-phase current waveform monitoring circuit, a capacitor CI3 is connected in parallel on the resistor RI3, the reverse input end of the operational amplifier UV5B is connected with the output end of the operational amplifier UV5B and then is used as the output end of the A-phase current waveform monitoring circuit, and one end of the microprocessor module (1) is connected with the ground through the capacitor CI2 by the sampling resistor RI 1;
the B-phase current waveform monitoring circuit comprises a logic gate chip U9 with the model of SGM3718 and an operational amplifier UV5A, wherein a 7 th pin of the logic gate chip U9 is connected with a resistor RI7, one end of the resistor RI7 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, a capacitor CI4 is connected in parallel on the resistor RI7, an 8 th pin of the logic gate chip U9 is connected with a microprocessor module (1) and is used for receiving a switch control signal K1_IB of the B-phase current waveform monitoring circuit output by the microprocessor module (1), and a 9 th pin of the logic gate chip U9 is connected with a positive input end of the operational amplifier UV5A and is a current signal input end AIN-Ia of the B-phase current waveform monitoring circuit; a 10 th pin of the logic gate chip U9 is connected with a resistor RI10, one end of the resistor RI10 is a reference voltage input end VREF of the B-phase current waveform monitoring circuit, and a capacitor CI7 is connected in parallel with the resistor RI 2; the reverse input end and the output end of the operational amplifier UV5A are connected and then used as the output end of the B-phase current waveform monitoring circuit, the output end is connected with the fifth analog signal input end ADC_IN5 of the microprocessor module (1) through a sampling resistor RI8, and one end of the sampling resistor RI8 connected with the microprocessor module (1) is grounded through a capacitor CI 5;
the C-phase current waveform monitoring circuit comprises a logic gate chip U8 with the model of SGM3718 and an operational amplifier UV5C, wherein a resistor RI13 is connected to a 2 nd pin of the logic gate chip U8, one end of the resistor RI13 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, and a capacitor CI10 is connected to the resistor RI13 in parallel; the 3 rd pin of the logic gate chip U8 is connected with the positive input end of the operational amplifier UV5C and is a current signal input end AIN-Ia of the C-phase current waveform monitoring circuit; the 4 th pin of the logic gate chip U9 is connected with the microprocessor module (1) and is used for receiving a switch control signal K1_IA of the A-phase current waveform monitoring circuit output by the microprocessor module (1), the 5 th pin of the logic gate chip U8 is connected with a resistor RI12, one end of the resistor RI12 is a reference voltage input end VREF of the C-phase current waveform monitoring circuit, a capacitor CI9 is connected IN parallel on the resistor RI12, the reverse input end of the operational amplifier UV5C is connected with the output end and then used as the output end of the C-phase current waveform monitoring circuit, the output end is connected with a sixth analog signal input end ADC_IN6 of the microprocessor module (1) through a sampling resistor RI9, and one end of the sampling resistor RI9 connected with the microprocessor module (1) is grounded through the capacitor CI 6.
7. The subsampled data based circuit breaker mechanical property monitoring device of claim 6, wherein: the A-phase current waveform monitoring circuit further comprises a transient suppression diode D3, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D3;
the B-phase current waveform monitoring circuit further comprises a transient suppression diode D4, and the output end of the operational amplifier UV5B is grounded through the transient suppression diode D4;
the C-phase current waveform monitoring circuit further comprises a transient suppression diode D5, and the output end of the operational amplifier UV5C is grounded through the transient suppression diode D5.
8. A method of monitoring mechanical characteristics of a circuit breaker using the subsampled data based circuit breaker mechanical characteristic monitoring device of claim 1, the method comprising the steps of:
step one, detecting breaking pulse signals of a breaker: the circuit breaker sends a breaking pulse signal when in fault, the signal is transmitted to the microprocessor module (1) through the breaking pulse signal transmission circuit (2), and the microprocessor module (1) takes the time of receiving the signal as the time of starting the mechanical characteristic timing, and records as t0;
step two, monitoring current waveforms and voltage waveforms of the circuit breaker: the current waveform monitoring circuit (4) monitors the current in real time, the microprocessor module (1) starts to process the current waveform after receiving the breaking pulse signal, and determines a specific time point of current mutation according to the current actual waveform, and the specific time point is recorded as the time t1 for completing breaking of the circuit breaker by taking the current waveform as a reference;
meanwhile, the voltage waveform monitoring circuit (3) monitors the voltage in real time, the microprocessor module (1) starts to process the voltage waveform after receiving the breaking pulse signal, and determines a specific time point of voltage mutation according to the actual voltage waveform, and the specific time point is recorded as time t2 for completing breaking of the circuit breaker by taking the voltage waveform as a reference;
step three, outputting breaking mechanical characteristics of the circuit breaker: when the microprocessor module (1) does not receive the current output by the current waveform monitoring circuit (4) and only receives the voltage output by the voltage waveform monitoring circuit (3), the microprocessor module (1) calculates the time difference TV between t0 and t2, takes the time difference TV as breaking mechanical characteristics, and stores and forwards the time difference TV to the aspect of operation and maintenance;
when the microprocessor module (1) receives the current output by the current waveform monitoring circuit (4) and the voltage output by the voltage waveform monitoring circuit (3), the microprocessor module (1) calculates the time difference TI between t0 and t1, takes the time difference TI as the breaking mechanical characteristic, and stores and transmits the time difference TI to the aspect of operation and maintenance.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484748A (en) * | 2021-08-12 | 2021-10-08 | 江苏国网自控科技股份有限公司 | Breaker data waveform detection and acquisition device and acquisition method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19529474C1 (en) * | 1995-08-11 | 1997-01-23 | Aeg Sensorsysteme Gmbh | Automatic monitoring system for fault current protection switch |
| US20120256753A1 (en) * | 2011-04-06 | 2012-10-11 | Kerry Berland | Arc fault circuit interrupter tester |
| CN105953911A (en) * | 2016-05-16 | 2016-09-21 | 湖南科技大学 | Vibration sensor used for monitoring mechanical fault of high-voltage circuit breaker |
| CN107271155A (en) * | 2017-04-26 | 2017-10-20 | 中国南方电网有限责任公司超高压输电公司贵阳局 | An online monitoring system for operating characteristic parameters of the operating mechanism of a high-voltage circuit breaker |
| CN207352129U (en) * | 2017-11-06 | 2018-05-11 | 国家电网公司 | A kind of current zero-crossing point closing device of low-voltage circuit breaker characteristic test |
| CN109507576A (en) * | 2018-11-20 | 2019-03-22 | 上海思源高压开关有限公司 | A kind of detection device for mechanical dc circuit breaker break performance |
| CN111381158A (en) * | 2020-05-09 | 2020-07-07 | 国网江苏省电力有限公司宿迁供电分公司 | Circuit breaker divide-shut brake coil real-time supervision device |
| CN113189481A (en) * | 2021-05-21 | 2021-07-30 | 江苏大学 | Electric power instrument with circuit breaker service life monitoring function and monitoring method |
| CN214150961U (en) * | 2020-11-27 | 2021-09-07 | 云南电网有限责任公司文山供电局 | Hardware circuit of control system of circuit breaker motion characteristic detection device |
-
2023
- 2023-09-28 CN CN202311274526.4A patent/CN117451331B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19529474C1 (en) * | 1995-08-11 | 1997-01-23 | Aeg Sensorsysteme Gmbh | Automatic monitoring system for fault current protection switch |
| US20120256753A1 (en) * | 2011-04-06 | 2012-10-11 | Kerry Berland | Arc fault circuit interrupter tester |
| CN105953911A (en) * | 2016-05-16 | 2016-09-21 | 湖南科技大学 | Vibration sensor used for monitoring mechanical fault of high-voltage circuit breaker |
| CN107271155A (en) * | 2017-04-26 | 2017-10-20 | 中国南方电网有限责任公司超高压输电公司贵阳局 | An online monitoring system for operating characteristic parameters of the operating mechanism of a high-voltage circuit breaker |
| CN207352129U (en) * | 2017-11-06 | 2018-05-11 | 国家电网公司 | A kind of current zero-crossing point closing device of low-voltage circuit breaker characteristic test |
| CN109507576A (en) * | 2018-11-20 | 2019-03-22 | 上海思源高压开关有限公司 | A kind of detection device for mechanical dc circuit breaker break performance |
| CN111381158A (en) * | 2020-05-09 | 2020-07-07 | 国网江苏省电力有限公司宿迁供电分公司 | Circuit breaker divide-shut brake coil real-time supervision device |
| CN214150961U (en) * | 2020-11-27 | 2021-09-07 | 云南电网有限责任公司文山供电局 | Hardware circuit of control system of circuit breaker motion characteristic detection device |
| CN113189481A (en) * | 2021-05-21 | 2021-07-30 | 江苏大学 | Electric power instrument with circuit breaker service life monitoring function and monitoring method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484748A (en) * | 2021-08-12 | 2021-10-08 | 江苏国网自控科技股份有限公司 | Breaker data waveform detection and acquisition device and acquisition method |
| CN113484748B (en) * | 2021-08-12 | 2025-03-07 | 江苏国网自控科技股份有限公司 | A circuit breaker data waveform detection and acquisition device and acquisition method |
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|---|---|
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