CN220231916U - Online monitoring device for opening and closing coil of circuit breaker - Google Patents
Online monitoring device for opening and closing coil of circuit breaker Download PDFInfo
- Publication number
- CN220231916U CN220231916U CN202321374188.7U CN202321374188U CN220231916U CN 220231916 U CN220231916 U CN 220231916U CN 202321374188 U CN202321374188 U CN 202321374188U CN 220231916 U CN220231916 U CN 220231916U
- Authority
- CN
- China
- Prior art keywords
- opening
- pin
- closing coil
- circuit breaker
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 description 36
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007621 cluster analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The utility model discloses an on-line monitoring device for a switching-on/off coil of a circuit breaker, which comprises a switching-on/off coil loop and a switching-on/off coil arranged on a circuit breaker body, wherein the device comprises: the sensing measurement module, the signal acquisition module and the data processing analysis module are sequentially connected; the sensing measurement module is connected with the circuit breaker and is used for measuring and outputting parameter signals of the opening and closing coils; the signal acquisition module is connected with the sensing measurement module and is used for acquiring and processing parameter signals so as to output parameter results; the data processing analysis module is connected with the signal acquisition module and is used for receiving and analyzing the parameter results to obtain monitoring results. The utility model realizes the on-line monitoring of the opening and closing coil in the operating state and the non-operating state of the circuit breaker.
Description
Technical Field
The utility model relates to the technical field of circuit breaker monitoring, in particular to an on-line monitoring device for a switching-on/off coil of a circuit breaker.
Background
The circuit breaker is one of the most important electrical equipment of the power system, is a main element of a power plant, a transformer substation and the power system, and is also a main equipment for cutting off faults when the power system breaks down, so that the reliable operation of the circuit breaker is of great significance. The breaker opening and closing coil faults are one of the main forms of breaker faults, and on-line monitoring and analysis aiming at the breaker opening and closing coil also becomes the key point of the breaker on-line monitoring and fault analysis.
However, at present, the on-line monitoring system for the current and the travel of a moving contact of a high-voltage circuit breaker is mainly used for monitoring the on-off coil of the circuit breaker when the circuit breaker performs on-off operation, for example, the on-line monitoring system for the current and the travel signal of the moving contact of the high-voltage circuit breaker disclosed in patent publication No. CN203881902U is used for on-line monitoring of the current and the travel signal of the moving contact in the on-off process of the circuit breaker, and cannot realize on-line monitoring of the on-off coil in the non-operation state of the circuit breaker.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an on-line monitoring device for a breaker opening and closing coil.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an on-line monitoring device for a switching-on/off coil of a circuit breaker, which comprises a switching-on/off coil loop and a switching-on/off coil arranged on a circuit breaker body, wherein the device comprises: the sensing measurement module, the signal acquisition module and the data processing analysis module are sequentially connected;
the sensing measurement module is connected with the circuit breaker and is used for measuring and outputting parameter signals of the opening and closing coil;
the signal acquisition module is connected with the sensing measurement module and is used for acquiring and processing the parameter signals so as to output parameter results;
the data processing analysis module is connected with the signal acquisition module, receives and analyzes the parameter result, and obtains a monitoring result.
Further, the sensing measurement module comprises a voltage sensor, a current sensor, a temperature sensor and a vibration sensor;
the voltage sensors are arranged on two sides of the opening and closing coil and are used for measuring voltage signals of the opening and closing coil;
the current sensor is connected in series with the opening and closing coil loop and is used for measuring a current signal of the opening and closing coil loop;
the temperature sensor is arranged on the breaker body or the opening and closing coil and is used for measuring a temperature signal of the opening and closing coil;
the vibration sensor is arranged on the breaker body or the opening and closing coil and is used for measuring a vibration signal of the opening and closing coil;
and the signal acquisition module calculates the resistance signal of the opening and closing coil according to the acquired current signal and the acquired voltage signal.
Further, the current sensor is a through-hole current sensor.
Further, the sensing measurement module further comprises a monitoring relay, and the monitoring relay is connected in series with the switching-on/off coil loop.
Further, the signal acquisition module comprises a signal acquisition processing board, and the voltage sensor, the current sensor, the temperature sensor and the vibration sensor are respectively connected with the signal acquisition processing board through signal leads.
Further, the signal acquisition processing board comprises a low-pass filter circuit and an A/D conversion circuit, wherein the input end of the low-pass filter circuit is connected with the voltage sensor, the current sensor, the temperature sensor and the vibration sensor through the signal lead, the input end of the A/D conversion circuit is connected with the output end of the low-pass filter circuit, and the output end of the A/D conversion circuit is connected with the data processing analysis module.
Further, the input end of the A/D conversion circuit comprises a microprocessor U1, the 49 th pin, the 51 th pin, the 53 th pin, the 55 th pin, the 57 th pin, the 59 th pin, the 61 st pin and the 63 st pin of the microprocessor U1, and the output end of the A/D conversion circuit comprises the 16 th pin to the 22 nd pin, the 24 th pin to the 25 th pin and the 27 th pin to the 33 th pin of the microprocessor U1.
Further, the microprocessor U1 is of the model AD7606.
Further, the A/D conversion circuit further comprises a power supply filter circuit, and the output end of the power supply filter circuit is connected with the 1 st pin, the 37 th pin, the 38 th pin and the 48 th pin of the microprocessor U1.
Further, the system also comprises a display module, wherein the display module is connected with the data processing analysis module.
The implementation of the utility model has the following beneficial effects:
the utility model provides an on-line monitoring device for a switching-on/off coil of a circuit breaker, which comprises a sensing measurement module, a signal acquisition module and a data processing analysis module, wherein the sensing measurement module is used for measuring the switching-on/off coil and outputting a parameter signal of the switching-on/off coil, the signal acquisition module is used for acquiring and processing the parameter signal to obtain a parameter result of the switching-on/off coil, and the data processing analysis module is used for analyzing the parameter result to obtain a monitoring result of the switching-on/off coil, so that the on-line monitoring of the switching-on/off coil under the operating state and the non-operating state of the circuit breaker is realized.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is one of schematic block diagrams of an on-line monitoring device for a breaker opening/closing coil according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a voltage signal and current signal acquisition circuit according to an embodiment of the present utility model;
FIG. 3 is a circuit diagram of an A/D conversion circuit according to an embodiment of the present utility model;
FIG. 4 is a circuit diagram of a power filter circuit according to an embodiment of the present utility model;
fig. 5 is a second schematic block diagram of an on-line monitoring device for a switching coil of a circuit breaker according to an embodiment of the present utility model.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
In the following description, it should be understood that terms such as "mounted," "connected," "secured," "disposed," and the like should be construed broadly, as well as being either fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.
The existing breaker opening and closing coil characteristic monitoring means cannot monitor the characteristics of the opening and closing coil in the non-operating state of the breaker, and the breaker opening and closing coil on-line monitoring device provided by the embodiment of the utility model can be suitable for a medium-high voltage breaker with the opening and closing coil, so that the characteristics of the opening and closing coil in the operating state and the non-operating state of the breaker can be monitored on line.
As shown in fig. 1, the embodiment of the utility model discloses an on-line monitoring device for a switching-on/off coil of a circuit breaker, the circuit breaker comprises a switching-on/off coil loop and a switching-on/off coil arranged on a circuit breaker body, and the device comprises: the sensing measurement module 10, the signal acquisition module 20 and the data processing analysis module 30 are sequentially connected; the sensing measurement module 10 is connected with the circuit breaker and is used for measuring and outputting parameter signals of the opening and closing coils; the signal acquisition module 20 is connected with the sensing measurement module 10 and acquires and processes parameter signals to output parameter results; the data processing and analyzing module 30 is connected with the signal collecting module 20, receives and analyzes the parameter result, and obtains the monitoring result.
Specifically, the parameter signals include a current signal, a voltage signal, a vibration signal, and a temperature signal of the opening/closing coil. The sensing measurement module 10 is connected with the circuit breaker and measures the opening and closing coil in the circuit breaker to obtain a parameter signal of the opening and closing coil. Further, the sensing measurement module 10 includes a voltage sensor, a current sensor, a temperature sensor, and a vibration sensor. The voltage sensors are arranged on two sides of the opening and closing coil and are used for measuring voltage signals of the opening and closing coil, and optionally, the voltage sensors are high-precision voltage sensors, and the model can be HCV200; the current sensor is connected in series with the opening and closing coil loop and is used for measuring a current signal of the opening and closing coil loop, optionally, the current sensor is a through type current sensor, and further, the through type current sensor is a through type high-precision current sensor, and the model can be RIT5M; the temperature sensor is arranged on the breaker body or the opening and closing coil and is used for measuring a temperature signal of the opening and closing coil; the vibration sensor is arranged on the breaker body or the opening and closing coil and is used for measuring vibration signals of the opening and closing coil.
The parameter result is a processed parameter signal. The parameter results include the processed current signal, voltage signal, vibration signal, temperature signal, and calculated resistance signal. The signal acquisition module 20 receives the current signal, the voltage signal, the vibration signal and the temperature signal output by the sensing measurement module 10, performs filtering, signal conversion and other processes on the current signal, the voltage signal, the vibration signal and the temperature signal, and calculates to obtain a resistance signal of the opening and closing coil according to the acquired current signal and voltage signal.
For example, as shown in fig. 2, S1 is a circuit breaker on-site opening/closing selection switch, S2 is an on-site opening button, S3 is an on-site closing button, BS1 and BS2 are opening/closing coil loop interlocking switches, TI1 and TI2 are current sensors, V1 and V2 are voltage sensors, LS1 and LS2 are circuit breaker opening and closing contacts, TQ and HQ are circuit breaker opening and closing coils, DC is a power supply, and CB1 is an air switch. When LS1 is closed, the voltage of TQ measured by V1 and the current measured by TI1 are transmitted to the signal acquisition module 20; when LS2 is closed, the voltage of HQ measured by V2 and the current measured by TI2 are transmitted to the signal acquisition module 20.
The voltage values of the two sides of the opening and closing coil are measured by connecting voltage sensors at the two ends of the opening and closing coil, and the measured voltage value is U (i); a current sensor is connected in series in a circuit of a breaker opening and closing coil, and the measured current value is I (I); the signal acquisition module 20 receives the current signal and the voltage signal, and can calculate the resistance R (i) of the opening and closing coil according to ohm's law, as shown in the following formula (1):
R(i)＝U(i)/I(i) (1)
the data processing and analyzing module 30 is configured to analyze the parameter result transmitted by the signal collecting module 20 to obtain a monitoring result. The monitoring result comprises fluctuation characteristics of a breaker opening and closing coil signal and operating condition information of the coil. For example, the data processing and analyzing module 30 may analyze the voltage signal, the current signal, the resistance signal, the temperature signal, and the vibration signal by using methods such as time domain correlation calculation, FFT time-frequency transformation, cluster analysis, and a state evaluation algorithm to obtain the fluctuation characteristics of the breaker opening and closing coil signal and the operating condition information of the coil.
Further, the data processing analysis module 30 stores historical operation information of voltage signals, current signals, resistance signals, temperature signals and vibration signals of the opening and closing coil of the circuit breaker, forms normal data intervals under different operation conditions, matches real-time measurement data with the data intervals, and considers that the equipment operates normally if the real-time measurement data is in the normal data intervals; if the real-time measurement data deviates from the normal data interval, the diagnosis equipment has a trend of abnormal operation, and early warning is sent in advance for operation and maintenance staff to pay attention to.
The utility model provides an on-line monitoring device for a switching-on/off coil of a circuit breaker, which comprises a sensing measurement module, a signal acquisition module and a data processing analysis module, wherein the sensing measurement module is used for measuring the switching-on/off coil and outputting a parameter signal of the switching-on/off coil, the signal acquisition module is used for acquiring and processing the parameter signal to obtain a parameter result of the switching-on/off coil, and the data processing analysis module is used for analyzing the parameter result to obtain a monitoring result of the switching-on/off coil, so that the on-line monitoring of the switching-on/off coil in a non-operating state of the circuit breaker is realized. In addition, the on-line monitoring device can also realize the on-off coil monitoring under the operating state of the circuit breaker.
In an embodiment of the present utility model, the signal acquisition module 20 includes a signal acquisition processing board, and the voltage sensor, the current sensor, the temperature sensor and the vibration sensor are respectively connected to the signal acquisition processing board through signal leads. The signal acquisition processing board receives the current signal, the voltage signal, the vibration signal and the temperature signal output by the sensing measurement module 10.
Further, the signal acquisition processing board comprises a low-pass filter circuit and an A/D conversion circuit, wherein the input end of the low-pass filter circuit is connected with the voltage sensor, the current sensor, the temperature sensor and the vibration sensor through signal leads, the input end of the A/D conversion circuit is connected with the output end of the low-pass filter circuit, and the output end of the A/D conversion circuit is connected with the data processing analysis module 30.
The low-pass filter circuit is used for filtering the current signal, the voltage signal, the vibration signal and the temperature signal, so that the current signal, the voltage signal, the vibration signal and the temperature signal are clearer. It should be noted that, a person skilled in the art may implement the low-pass filter circuit by using a prior art means, and the present utility model is not limited in particular.
The A/D conversion circuit performs A/D conversion on the parameter signals, realizes data transmission of the parameter signals, and facilitates subsequent monitoring operation.
In an embodiment of the utility model, the input end of the a/D conversion circuit includes a microprocessor U1, and the input end of the a/D conversion circuit includes a 49 th pin, a 51 th pin, a 53 th pin, a 55 th pin, a 57 th pin, a 59 th pin, a 61 st pin, and a 63 st pin of the microprocessor U1, and the output end of the a/D conversion circuit includes a 16 th pin to a 22 nd pin, a 24 th pin to a 25 th pin, and a 27 th pin to a 33 th pin of the microprocessor U1. Alternatively, the microprocessor U1 is of the model AD7606. It is understood that the microprocessor U1 calculates the resistance signal according to the current signal and the voltage signal transmitted thereto.
It will be appreciated that the specific selection of which pin of the microprocessor U1 is used as the input terminal of the a/D conversion circuit and the output terminal of the a/D conversion circuit may be determined according to practical requirements.
As shown in fig. 3, the a/D conversion circuit further includes a connector J1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7; the first end of the connector J1, one end of the first capacitor C1, one end of the second capacitor C2 and one end of the third capacitor C3 are connected with a 42 th pin of the microprocessor U1, and the second end of the connector J1, the other end of the first capacitor C1, the other end of the second capacitor C2 and the other end of the third capacitor C3 are all connected with the first analog ground AGND; one end of a fourth capacitor C4 is connected with a 36 th pin of the microprocessor U1, one end of a fifth capacitor C5 is connected with a 39 th pin of the microprocessor U1, and the other end of the fourth capacitor C4 and the other end of the fifth capacitor C5 are both connected with a first analog ground AGND; one end of the sixth capacitor C6 is connected with the second analog ground DGND, and the other end C6 of the sixth capacitor is connected with the 23 rd pin of the microprocessor U1 and the driving voltage VDRIVE; one end of a seventh capacitor C7 is connected with a 44 th pin and a 45 th pin of the microprocessor U1, and the other end of the seventh capacitor C7 is respectively connected with a 43 rd pin, a 46 th pin and a first analog ground AGND of the microprocessor U1; one end of the first resistor R1, one end of the third resistor R3, one end of the fourth resistor R4 and one end of the seventh resistor R7 are all connected with the driving voltage VDRIVE, and the other end of the first resistor R1 is respectively connected with the 34 th pin of the microprocessor U1 and one end of the fifth resistor R5; the other end of the third resistor R3 is connected with one end of an 8 th pin of the microprocessor U1 and one end of a sixth resistor R6; the other end of the fourth resistor R4 is connected with one end of the second resistor R2; the other end of the seventh resistor R7 is connected with a 7 th pin of the microprocessor U1; the other end of the fifth resistor R5, the other end of the sixth resistor R6, and the other end of the second resistor R2 are connected to the second analog ground DGND, respectively.
In order to monitor the integrity of the opening and closing coil circuit of the circuit breaker, the sensing measurement module 10 further includes an opening and closing monitoring relay connected in series to the opening and closing coil circuit in an embodiment of the present utility model.
In order to reduce the influence of power supply noise on signal conversion, in an embodiment of the present utility model, as shown in fig. 4, the a/D conversion circuit further includes a power supply filter circuit that filters the power supply input to the a/D conversion circuit. The output end of the power supply filter circuit is connected with the 1 st pin, the 37 th pin, the 38 th pin and the 48 th pin of the microprocessor U1.
Further, the power supply filter circuit further includes an inductor L1, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, and an electrolytic capacitor C12, wherein one end of the inductor L1 is connected to the power supply DVCC, one end of the inductor L1, one end of the eighth capacitor C8, one end of the ninth capacitor C9, one end of the tenth capacitor C10, one end of the eleventh capacitor C11, and one end of the electrolytic capacitor C12 are connected, and the connection node is connected to 1 pin, 37 pin, 38 pin, and 48 pin of the microprocessor U1, and the other end of the eighth capacitor C8, the other end of the ninth capacitor C9, the other end of the tenth capacitor C10, the other end of the eleventh capacitor C11, and the other end of the electrolytic capacitor C12 are respectively connected to the first analog ground AGND.
As shown in fig. 5, in an embodiment of the utility model, the on-line monitoring device for the opening and closing coil of the circuit breaker further includes a display module 40, where the display module 40 is connected to the data processing and analyzing module 30, and is used for displaying the monitoring result. The display module 40 can be a display screen or other devices with display function, so that a user can monitor the running state of the opening and closing coil of the circuit breaker more intuitively to take corresponding measures.
The on-line monitoring device for the opening and closing coil of the circuit breaker can monitor the state of the opening and closing coil of the circuit breaker in real time when the circuit breaker is in normal operation, can realize the monitoring function of the opening and closing coil of the circuit breaker in the opening and closing operation process of the circuit breaker, realizes the real-time on-line monitoring of the whole operation period of the opening and closing coil of the circuit breaker, solves the defect that the existing monitoring means can only monitor the opening and closing coil of the circuit breaker in the operation process of the circuit breaker, judges the operation state of the opening and closing coil of the circuit breaker in advance, and improves the reliability of the opening and closing operation of the circuit breaker. When the opening and closing coil of the circuit breaker is abnormal, operation maintenance personnel can conveniently make a plan or maintain in advance, and loss and processing cost caused by the abnormality of the opening and closing coil of the circuit breaker are reduced.
The foregoing examples only illustrate preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. An on-line monitoring device for a switching-on/off coil of a circuit breaker, the circuit breaker comprises a switching-on/off coil loop and a switching-on/off coil arranged on a circuit breaker body, and the on-line monitoring device is characterized in that the device comprises: the sensing measurement module, the signal acquisition module and the data processing analysis module are sequentially connected;
the sensing measurement module is connected with the circuit breaker and is used for measuring and outputting parameter signals of the opening and closing coil;
the signal acquisition module is connected with the sensing measurement module and is used for acquiring and processing the parameter signals so as to output parameter results;
the data processing analysis module is connected with the signal acquisition module, receives and analyzes the parameter result, and obtains a monitoring result.
2. The on-line monitoring device for the opening and closing coil of the circuit breaker according to claim 1, wherein the sensing measurement module comprises a voltage sensor, a current sensor, a temperature sensor and a vibration sensor;
the voltage sensors are arranged on two sides of the opening and closing coil and are used for measuring voltage signals of the opening and closing coil;
the current sensor is connected in series with the opening and closing coil loop and is used for measuring a current signal of the opening and closing coil loop;
the temperature sensor is arranged on the breaker body or the opening and closing coil and is used for measuring a temperature signal of the opening and closing coil;
the vibration sensor is arranged on the breaker body or the opening and closing coil and is used for measuring a vibration signal of the opening and closing coil;
and the signal acquisition module calculates the resistance signal of the opening and closing coil according to the acquired current signal and the acquired voltage signal.
3. The on-line monitoring device of a circuit breaker opening and closing coil according to claim 2, wherein the current sensor is a through-the-air current sensor.
4. The on-line monitoring device of a circuit breaker opening and closing coil according to claim 2, wherein the sensing measurement module further comprises a monitoring relay connected in series with the opening and closing coil loop.
5. The on-line monitoring device for the opening and closing coil of the circuit breaker according to claim 2, wherein the signal acquisition module comprises a signal acquisition processing board, and the voltage sensor, the current sensor, the temperature sensor and the vibration sensor are respectively connected with the signal acquisition processing board through signal leads.
6. The on-line monitoring device for the opening and closing coil of the circuit breaker according to claim 5, wherein the signal acquisition processing board comprises a low-pass filter circuit and an A/D conversion circuit, the input end of the low-pass filter circuit is connected with the voltage sensor, the current sensor, the temperature sensor and the vibration sensor through the signal lead, the input end of the A/D conversion circuit is connected with the output end of the low-pass filter circuit, and the output end of the A/D conversion circuit is connected with the data processing analysis module.
7. The on-line monitoring device for opening and closing coil of circuit breaker according to claim 6, wherein the a/D conversion circuit comprises a microprocessor U1, the input end of the a/D conversion circuit is the 49 th pin, the 51 th pin, the 53 th pin, the 55 th pin, the 57 th pin, the 59 th pin, the 61 st pin and the 63 st pin of the microprocessor U1, and the output end of the a/D conversion circuit is the 16 th pin to the 22 nd pin, the 24 th pin to the 25 th pin and the 27 th pin to the 33 th pin of the microprocessor U1.
8. The on-line monitoring device for opening and closing coil of circuit breaker according to claim 7, wherein the microprocessor U1 is of the model AD7606.
9. The on-line monitoring device for opening and closing coil of circuit breaker according to claim 7, wherein the a/D conversion circuit further comprises a power supply filter circuit, and the output end of the power supply filter circuit is connected with the 1 st pin, the 37 th pin, the 38 th pin and the 48 th pin of the microprocessor U1.
10. The on-line monitoring device for the opening and closing coil of the circuit breaker according to claim 1, further comprising a display module, wherein the display module is connected with the data processing analysis module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321374188.7U CN220231916U (en) | 2023-05-31 | 2023-05-31 | Online monitoring device for opening and closing coil of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321374188.7U CN220231916U (en) | 2023-05-31 | 2023-05-31 | Online monitoring device for opening and closing coil of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220231916U true CN220231916U (en) | 2023-12-22 |
Family
ID=89177223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321374188.7U Active CN220231916U (en) | 2023-05-31 | 2023-05-31 | Online monitoring device for opening and closing coil of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220231916U (en) |
-
2023
- 2023-05-31 CN CN202321374188.7U patent/CN220231916U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104716741B (en) | Transformer station's remote supervision system and remote monitoring method thereof | |
| CN101515520B (en) | Intelligent self-diagnosis medium-pressure vacuum circuit breaker | |
| CN108418304B (en) | Transformer substation secondary circuit state monitoring method, device and system | |
| CN110470939A (en) | The monitoring power distribution cabinet and line fault judgment method of a kind of automatic detection and alarm | |
| CN213986651U (en) | Multi-state online monitoring system for lightning arrester | |
| CN108120925A (en) | Real-time operating state monitoring system for HV breaker based on CAN bus | |
| CN106597181A (en) | Operation monitoring system and method of high-voltage power transformer | |
| CN220231916U (en) | Online monitoring device for opening and closing coil of circuit breaker | |
| CN209979734U (en) | Power consumption detection system | |
| CN101359843A (en) | Switch cupboard monitoring management apparatus | |
| CN112180250A (en) | Contactor state monitoring system and monitoring method | |
| CN1245792C (en) | Method of on line prealarming when temperature of plug in switch cabinet is abnormal | |
| CN109405894A (en) | A kind of remote data acquisition and monitoring system | |
| CN109765040A (en) | The mechanical property on-line monitoring system of breaker | |
| CN214310729U (en) | Transformer environmental condition monitoring devices | |
| CN109473878A (en) | A kind of In-Line Temperature Measure System of locomotive power supply dc switch cabinet body | |
| CN213715747U (en) | Switch cabinet secondary equipment monitoring system | |
| CN212047371U (en) | Intelligent protection box for displaying and early warning | |
| CN107607834A (en) | Transformer station's OPGW composite cable on-line monitoring system and method | |
| CN212432376U (en) | Voltage transformer winding internal temperature monitoring system | |
| CN114415010A (en) | Online monitoring device and monitoring method for mechanical characteristics of high-voltage switch cabinet circuit breaker | |
| CN208636416U (en) | A kind of CVT secondary voltage analytical equipment based on electronic type transmitter | |
| CN201260092Y (en) | Switch cupboard monitoring management apparatus | |
| CN116609600A (en) | Health management system for axial flow compressor electrical equipment | |
| CN110780232A (en) | Automatic change looped netowrk cabinet intelligent integrated on-line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |