CN209980050U - Circuit breaker control acquisition module - Google Patents
Circuit breaker control acquisition module Download PDFInfo
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- CN209980050U CN209980050U CN201920716950.2U CN201920716950U CN209980050U CN 209980050 U CN209980050 U CN 209980050U CN 201920716950 U CN201920716950 U CN 201920716950U CN 209980050 U CN209980050 U CN 209980050U
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Abstract
The utility model provides a circuit breaker control acquisition module, including sensor assembly, collection return circuit and controlgear, sensor assembly includes circuit breaker displacement sensor, current sensor, SF6 gas pressure sensor, switch position sensor and spring energy storage sensor; the acquisition loop comprises a first data processing loop and a second data processing loop which are parallel, and the first data processing loop and the second processing loop have the same structure and respectively comprise a signal conditioning module, a sampling module, a signal processing module and a signal sending module which are electrically connected in sequence; the signal conditioning modules of the first data processing circuit and the second data processing circuit are respectively electrically connected with the sensor assembly, and a comparator is connected between the signal sending modules; the signal sending module is electrically connected with the control equipment through the comparator, so that the double-data-stream anti-error processing method has the advantage of double-data-stream anti-error processing, and the reliability of the data source is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, concretely relates to circuit breaker control acquisition module.
Background
In the direction of intelligent development, an intelligent high-voltage circuit breaker is used as a key contact in a power system and also used as a data sharing source, the reliability of data is very important, but soft errors exist in the working process of data acquisition of the existing intelligent high-voltage circuit breaker, and the soft errors are temporary errors caused by transient faults of an integrated circuit and are not permanent errors; transient failures of integrated circuits occur mainly due to radioactive decay of uranium and thorium doping in the chip packaging material to give off alpha particles or collisions of neutrons of various energies in the atmospheric environment. Due to the reduction of the transistor size and the operating voltage, the low energy particles can generate enough deposited charges to cause soft errors, so that the failure rate caused by the single event effect of the combinational logic part is equivalent to the failure rate of the memory cell, and the occurrence probability of the multi-transient failure becomes non-negligible. In the merging unit of the high-voltage circuit break, soft errors may cause the abnormal work of a DSP or an FPGA, and all processing data are abnormal; therefore, the method is important for preventing the misoperation of the control acquisition of the circuit breaker.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker control collection module to there is soft mistake in the data acquisition course of work in solving current intelligent high voltage circuit breaker, can lead to DSP or FPGA unusual problem of work.
The utility model provides a following technical scheme:
a circuit breaker control acquisition module comprises a sensor assembly, an acquisition loop and control equipment, wherein the sensor assembly comprises a circuit breaker displacement sensor, a current sensor, an SF6 gas pressure sensor, a disconnecting link position sensor and a spring energy storage sensor, and the circuit breaker displacement sensor is arranged on the secondary equipment side of a circuit breaker and used for measuring the opening and closing stroke, the opening and closing speed and the opening and closing time of the circuit breaker; the current sensor is arranged in a tank body of the circuit breaker and is used for measuring the currents of the jumping ring, the closing ring and the energy storage motor; the SF6 gas pressure sensor is arranged on the secondary equipment side of the circuit breaker and used for measuring the SF6 gas pressure of the high-voltage switch; the disconnecting link position sensor is arranged outside a disconnecting link mechanism of the circuit breaker and used for measuring disconnecting link position data; the spring energy storage sensor is arranged on one side of a spring of the circuit breaker and used for measuring the position of the spring; the acquisition loop comprises a first data processing loop and a second data processing loop which are parallel, and the first data processing loop and the second processing loop have the same structure and respectively comprise a signal conditioning module, a sampling module, a signal processing module and a signal sending module which are electrically connected in sequence; the signal conditioning modules of the first data processing circuit and the second data processing circuit are respectively electrically connected with the sensor assembly, a comparator is connected between the signal sending modules of the first data processing circuit and the second data processing circuit, and the comparator is used for comparing data sent by the two signal sending modules; the signal sending module is electrically connected with the control equipment through the comparator, and the control equipment is installed outside the circuit breaker and used for receiving the data of the acquisition loop and realizing a control instruction of the circuit breaker.
Further, the signal sending module sends SV sampling data to the control device in a fiber point-to-point manner.
Further, the sensor assembly transmits data to the acquisition loop in an RS485 serial communication mode.
Further, the circuit breaker displacement sensor is an incremental photoelectric encoder; the current sensor is a Hall current sensor; the SF6 gas pressure sensor is a MEMS pressure sensor, and a temperature sensor is integrated in the SF6 gas pressure sensor; the disconnecting link position sensor is a high-performance three-dimensional motion attitude measurement sensor based on an MEMS technology; the spring energy storage sensor is a sliding variable resistance sensor.
Further, the signal conditioning module includes an amplifying circuit and a filtering circuit.
Further, the sampling module is an AD analog-to-digital converter.
Further, the signal processing module is a DSP chip, and the DSP chip is used for performing calculation processing of a fixed formula on the data.
Further, the signal sending module is an FPGA module, and the FPGA module is used for compiling and sending data.
The utility model has the advantages that:
the utility model relates to a circuit breaker control acquisition module, double data stream anti-error processing technique has been introduced to adoption first data processing circuit and second processing circuit, the data of having guaranteed the sensor subassembly passback is at the signal conditioning module in acquisition circuit, sampling module, soft mistake can not appear in each link of signal processing module and signalling module, if when unusual data appears, data and in time close the data of pinning the mistake through the comparator contrast between the signalling module, avoid the controlgear of rear end to produce wrong action because of receiving wrong sampling data, the reliability of data source has greatly been improved, the reliability problem of data source has been solved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a circuit breaker control acquisition module comprises a sensor assembly, an acquisition loop and a control device, wherein the sensor assembly comprises a circuit breaker displacement sensor, a current sensor, an SF6 gas pressure sensor, a disconnecting link position sensor and a spring energy storage sensor; the circuit breaker displacement sensor is installed in the secondary equipment side of circuit breaker for measure the deciliter stroke, deciliter speed and the deciliter time of circuit breaker, circuit breaker displacement sensor adopts incremental photoelectric encoder, and incremental photoelectric encoder mainly comprises light source, code wheel, detection grating, photoelectric detection device and converting circuit, realizes through incremental photoelectric encoder that deciliter stroke, deciliter speed and the measurement of deciliter time to the circuit breaker are prior art, its advantage: the principle and the structure are simple and easy to realize; the average service life of the machine is long; the resolution is high; the anti-interference capability is strong, the signal transmission distance is long, and the reliability is very high; the current sensor is arranged in a tank body of the circuit breaker and used for measuring the current of the jumping ring, the closing ring and the energy storage motor, and the current sensor is a Hall current sensor, so that the method has the advantages that the original control loop (adopting a core-through measuring mode) is not damaged, the circuit to be measured is not influenced, the power of the power supply to be measured is not consumed, and the method is a better method for realizing online monitoring without reducing the reliability of the original loop; the SF6 gas pressure sensor is arranged on the secondary equipment side of the circuit breaker and used for measuring the SF6 gas pressure of the high-voltage switch, the SF6 gas pressure sensor is an MEMS pressure sensor, a temperature sensor is integrated in the sensor, the MEMS sensor is a novel sensor manufactured by adopting a micro machining technology, and the MEMS pressure sensor adopting a silicon piezoresistive principle is compared with the traditional pressure sensor, so that the MEMS pressure sensor is small in size, high in measurement accuracy, low in power consumption and low in cost. Meanwhile, the sensor based on the MEMS technology integrates the function of a temperature sensor, and the pressure of SF6 can be subjected to normalized calculation at the temperature of 20 ℃ so as to eliminate the influence of the temperature on the pressure; the disconnecting link position sensor is arranged outside a disconnecting link mechanism of the circuit breaker and used for measuring disconnecting link position data, the disconnecting link position sensor is a high-performance three-dimensional motion attitude measuring sensor based on the MEMS technology, and the three-dimensional attitude and the relative position can be rapidly calculated through an embedded low-power processor. The product has the characteristics of small volume, high precision and capability of outputting a high-precision attitude angle, and meets the application requirements of attitude control in civil and common industrial places; the spring energy storage sensor is installed on one side of a spring of the circuit breaker and used for measuring the position of the spring, the spring energy storage sensor is a sliding rheostat sensor, the spring energy storage sensor can achieve measurement of the position of the spring based on the sliding rheostat principle, resistance values of the springs located in different position sensors can be different, and sensing of the positions is achieved through the resistance values of the measuring sensors.
The acquisition loop comprises a first data processing loop and a second data processing loop which are parallel, and the first data processing loop and the second processing loop have the same structure and respectively comprise a signal conditioning module, a sampling module, a signal processing module and a signal sending module which are electrically connected in sequence; the signal conditioning modules of the first data processing circuit and the second data processing circuit are respectively electrically connected with the sensor assembly, a comparator is connected between the signal sending modules, and the comparator is used for comparing the data sent by the two signal sending modules; the signal sending modules are electrically connected with control equipment through comparators, and the control equipment is arranged outside the circuit breaker and used for receiving data of the acquisition loop and realizing a control instruction of the circuit breaker; the signal sending module sends SV sampling data to the control equipment in a point-to-point mode through an optical fiber; the sensor assembly transmits data to an acquisition loop in an RS485 serial communication mode; the signal conditioning module comprises an amplifying circuit and a filter circuit; the sampling module is an AD (analog-to-digital) converter; the signal processing module is a DSP chip, and the DSP chip is used for calculating and processing data by a fixed formula; the signal sending module is an FPGA module, and the FPGA module is used for compiling and sending data.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A circuit breaker control acquisition module comprises a sensor assembly, an acquisition loop and control equipment, and is characterized in that the sensor assembly comprises a circuit breaker displacement sensor, a current sensor, an SF6 gas pressure sensor, a disconnecting link position sensor and a spring energy storage sensor, wherein the circuit breaker displacement sensor is arranged on the secondary equipment side of a circuit breaker and is used for measuring the opening and closing stroke, the opening and closing speed and the opening and closing time of the circuit breaker; the current sensor is arranged in a tank body of the circuit breaker and is used for measuring the currents of the jumping ring, the closing ring and the energy storage motor; the SF6 gas pressure sensor is arranged on the secondary equipment side of the circuit breaker and used for measuring the SF6 gas pressure of the high-voltage switch; the disconnecting link position sensor is arranged outside a disconnecting link mechanism of the circuit breaker and used for measuring disconnecting link position data; the spring energy storage sensor is arranged on one side of a spring of the circuit breaker and used for measuring the position of the spring;
the acquisition loop comprises a first data processing loop and a second data processing loop which are parallel, and the first data processing loop and the second processing loop have the same structure and respectively comprise a signal conditioning module, a sampling module, a signal processing module and a signal sending module which are electrically connected in sequence; the signal conditioning modules of the first data processing circuit and the second data processing circuit are respectively electrically connected with the sensor assembly, a comparator is connected between the signal sending modules of the first data processing circuit and the second data processing circuit, and the comparator is used for comparing data sent by the two signal sending modules; the signal sending module is electrically connected with the control equipment through the comparator, and the control equipment is installed outside the circuit breaker and used for receiving the data of the acquisition loop and realizing a control instruction of the circuit breaker.
2. The circuit breaker control acquisition module of claim 1, wherein the signal transmission module transmits SV sampling data to the control device in a fiber point-to-point manner.
3. The circuit breaker control acquisition module of claim 1, wherein the sensor assembly transmits data to the acquisition loop via RS485 serial communication.
4. The circuit breaker control acquisition module of claim 1, wherein the circuit breaker displacement sensor is an incremental photoelectric encoder; the current sensor is a Hall current sensor; the SF6 gas pressure sensor is a MEMS pressure sensor, and a temperature sensor is integrated in the SF6 gas pressure sensor; the disconnecting link position sensor is a high-performance three-dimensional motion attitude measurement sensor based on an MEMS technology; the spring energy storage sensor is a sliding variable resistance sensor.
5. The circuit breaker control acquisition module of claim 1, wherein the signal conditioning module comprises an amplification circuit and a filtering circuit.
6. The circuit breaker control acquisition module of claim 1, wherein the sampling module is an AD analog-to-digital converter.
7. The circuit breaker control acquisition module of claim 1, wherein the signal processing module is a DSP chip, and the DSP chip is configured to perform calculation processing of a fixed formula on data.
8. The circuit breaker control acquisition module of claim 1, wherein the signal transmission module is an FPGA module, and the FPGA module is configured to compile and transmit data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716950.2U CN209980050U (en) | 2019-05-17 | 2019-05-17 | Circuit breaker control acquisition module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920716950.2U CN209980050U (en) | 2019-05-17 | 2019-05-17 | Circuit breaker control acquisition module |
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| CN209980050U true CN209980050U (en) | 2020-01-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257745A (en) * | 2020-02-28 | 2020-06-09 | 大唐水电科学技术研究院有限公司 | Generator outlet circuit breaker state early warning method |
| CN111504315A (en) * | 2020-06-03 | 2020-08-07 | 北京四方继保工程技术有限公司 | Isolation switch attitude sensor integral measurement method based on abrupt change starting |
-
2019
- 2019-05-17 CN CN201920716950.2U patent/CN209980050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257745A (en) * | 2020-02-28 | 2020-06-09 | 大唐水电科学技术研究院有限公司 | Generator outlet circuit breaker state early warning method |
| CN111504315A (en) * | 2020-06-03 | 2020-08-07 | 北京四方继保工程技术有限公司 | Isolation switch attitude sensor integral measurement method based on abrupt change starting |
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