CN210865766U - Superconducting coil quench protection system - Google Patents
Superconducting coil quench protection system Download PDFInfo
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- CN210865766U CN210865766U CN201922229673.5U CN201922229673U CN210865766U CN 210865766 U CN210865766 U CN 210865766U CN 201922229673 U CN201922229673 U CN 201922229673U CN 210865766 U CN210865766 U CN 210865766U
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Abstract
The utility model discloses a superconducting coil quench protection system, superconducting coil include a plurality of segmentation coils, quench protection system includes initiative protection unit and passive protection unit, and initiative protection unit includes quench detection module and quench emergency treatment module, and passive protection unit includes resistance and the diode that connects in parallel with segmentation coil; the quench detection module comprises a microprocessor, temperature sensors and voltage sensors, the output ends of two adjacent voltage sensors are connected with a voltage signal processing circuit, the input end of the microprocessor is connected with the output end of the voltage signal processing circuit, and the output end of the microprocessor is connected with a relay control circuit; the quench emergency processing module comprises a heating plate and a relay, and a coil of the relay is connected with a relay control circuit. The utility model discloses system simple structure, reasonable in design realizes conveniently and with low costs, can effectively use in superconducting coil's quench protection, and safety and stability is high, excellent in use effect, convenient to popularize and use.
Description
Technical Field
The utility model belongs to the technical field of the superconduction, concretely relates to superconducting coil quench protection system.
Background
With the development of a power grid system, the safe and stable operation of a power system becomes an important task of the development and operation of the power grid, and meanwhile, with the increase of power consumption, a superconducting technology has already entered into industrial operation and is gradually applied to the power system, a superconducting coil is used as a basic component unit of superconducting equipment, if the superconducting coil is quenched during operation, great heat is generated, if effective measures are not taken, the quench propagation and heat accumulation bring irreversible damage, great economic loss and loss of time cost are caused, and therefore, the monitoring and protection of the superconducting coil are particularly important. In the prior art, the protection of the superconducting coil comprises active protection and passive protection, the active protection firstly needs quench detection, the quench detection mainly comprises temperature rise detection, ultrasonic detection and voltage detection, the temperature rise detection principle is simple, the result is intuitive, but the performance of the temperature sensor has higher requirements, the ultrasonic detection sensitivity is high, but the real-time performance is poor, the voltage detection principle is simple, but the sensitivity is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a superconducting coil quench protection system, its system structure is simple, reasonable in design, and it is convenient and with low costs to realize, can effectively use in superconducting coil's quench protection, and safety and stability is high, excellent in use effect, convenient to popularize and use.
In order to solve the technical problem, the utility model discloses a technical scheme is: a superconducting coil quench protection system comprises a plurality of segmented coils which are connected pairwise, and comprises an active protection unit and a passive protection unit, wherein the active protection unit comprises a quench detection module and a quench emergency processing module, and the passive protection unit comprises a resistor and a diode which are connected with the segmented coils in parallel; the quench detection module comprises a microprocessor, a plurality of temperature sensors for detecting the temperature value of the segmented coil and a plurality of voltage sensors for detecting the voltage value of the segmented coil, wherein the temperature sensors are arranged on one side of the segmented coil, the voltage sensors are connected with the segmented coil, the output ends of two adjacent voltage sensors are connected with a voltage signal processing circuit, the input end of the microprocessor is connected with the output end of the voltage signal processing circuit, and the output end of the microprocessor is connected with a relay control circuit; the quench emergency processing module comprises a heating sheet arranged on the outer surface of each segmented coil and a relay connected to a power supply loop of the heating sheet, and the coil of the relay is connected with a relay control circuit.
In the superconducting coil quench protection system, the number of the temperature sensors corresponds to the number of the segmented coils.
In the superconducting coil quench protection system, the number of the voltage sensors corresponds to the number of the segmented coils.
In the superconducting coil quench protection system, the microprocessor comprises a DSP microcontroller.
According to the superconducting coil quench protection system, the voltage signal processing circuit comprises a differential amplification circuit, an analog multiplication circuit, a low-pass filter circuit and a comparison circuit which are sequentially connected from the voltage sensor to the microprocessor.
According to the superconducting coil quench protection system, the glass fiber cloth for electrical insulation is arranged between the heating sheet and the outer surface of the segmented coil.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses system structure is simple, reasonable in design, and it is convenient and with low costs to realize.
2. The utility model discloses an initiative protection combines together with passive protection, "double insurance" as the protection of quench.
3. The utility model discloses a quench detection module adopts the temperature rise to detect and voltage detection to combine together, and the principle is simple, improves the accuracy that the quench detected.
4. The utility model discloses a quench emergency treatment module adopts the heating plate to quench with higher speed, takes place at the quench, and when local temperature rise was too high, makes superconducting coil quench at bigger within range, avoids burning out peripheral insulating layer because of local high temperature.
5. The utility model discloses can effectively use in superconducting coil's quench protection, the safety and stability is high, excellent in use effect, convenient to popularize and use.
To sum up, the utility model discloses system simple structure, reasonable in design realizes conveniently and with low costs, can effectively use in superconducting coil's quench protection, and safety and stability is high, excellent in use effect, convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic block diagram of a quench protection system of the present invention;
fig. 2 is a schematic circuit diagram of the passive protection unit of the present invention;
fig. 3 is a schematic circuit block diagram of the voltage signal processing circuit of the present invention.
Description of reference numerals:
1-a segment coil; 2-an active protection unit; 3-a passive protection unit;
4-a microprocessor; 5-temperature sensor; 6-a voltage sensor;
7-voltage signal processing circuit; 7-1-differential amplifier circuit; 7-2-analog multiplication circuit;
7-3-low pass filter circuit; 7-4-a comparison circuit; 8, a relay control circuit;
9-heating plate; 10-relay.
Detailed Description
As shown in fig. 1, the superconducting coil quench protection system of the present invention, the superconducting coil includes a plurality of segment coils 1 connected in pairs, the quench protection system includes an active protection unit 2 and a passive protection unit 3, the active protection unit 2 includes a quench detection module and a quench emergency processing module, and with reference to fig. 2, the passive protection unit 3 includes a resistor and a diode connected in parallel with the segment coils 1; the quench detection module comprises a microprocessor 4, a plurality of temperature sensors 5 for detecting the temperature value of the segmented coil 1 and a plurality of voltage sensors 6 for detecting the voltage value of the segmented coil 1, wherein the temperature sensors 5 are arranged on one side of the segmented coil 1, the voltage sensors 6 are connected with the segmented coil 1, the output ends of two adjacent voltage sensors 6 are connected with a voltage signal processing circuit 7, the input end of the microprocessor 4 is connected with the output end of the voltage signal processing circuit 7, and the output end of the microprocessor 4 is connected with a relay control circuit 8; the quench emergency processing module comprises a heating sheet 9 arranged on the outer surface of each segmented coil 1 and a relay 10 connected to a power supply loop of the heating sheet 9, and a coil of the relay 10 is connected with a relay control circuit 8.
In specific implementation, the quench detection module in the active protection unit 2 is used for rapidly detecting the quench of the superconducting coil, and when the quench occurs, the quench emergency processing module in the active protection unit 2 is used for accelerating the quench of the superconducting coil, so as to avoid the damage to the superconducting coil caused by over-high local temperature rise due to concentrated heating; the resistor and the diode which are connected with the segment coil 1 in parallel in the passive protection unit 3 form an LR loop with the segment coil 1, and the LR loop is used for controlling the current and voltage changes of the segment coil 1.
In specific implementation, the quench detection module performs temperature detection and voltage detection at the same time, and the voltage detection compares the two segment coils 1 as a group to judge the occurrence of quench.
In the present embodiment, the number of the temperature sensors 5 corresponds to the number of the segment coils 1.
In the present embodiment, the number of the voltage sensors 6 corresponds to the number of the segment coils 1.
In this embodiment, the microprocessor 4 includes a DSP microcontroller.
In this embodiment, as shown in fig. 3, the voltage signal processing circuit 7 includes a differential amplifying circuit 7-1, an analog multiplying circuit 7-2, a low-pass filter circuit 7-3, and a comparison circuit 7-4, which are connected in sequence from the voltage sensor 6 to the microprocessor 4.
In specific implementation, the differential amplification circuit 7-1, the analog multiplication circuit 7-2, the low-pass filter circuit 7-3 and the comparison circuit 7-4 sequentially process the voltage signals collected by the voltage sensor 6, and input the processed voltage signals into the microprocessor 4.
In this embodiment, a glass cloth for electrical insulation is disposed between the heating sheet 9 and the outer surface of the segment coil 1.
The utility model discloses a working process is: the superconducting coil has superconducting characteristics under the condition of meeting specific conditions, the superconducting coil normally works, when the specific conditions are damaged, the superconducting coil is subjected to quenching, the current and voltage change, and heat energy is generated, and the resistor and the diode which are connected with the segmented coil 1 in parallel in the passive protection unit 3 firstly control the current and voltage change of the segmented coil 1 and absorb partial heat energy; temperature value that corresponds segmentation coil 1 of temperature sensor 5 real-time detection that sets up in segmentation coil 1 one side among the quench detection module in the initiative protection unit 2, simultaneously, voltage sensor 6 real-time detection in the quench detection module corresponds segmentation coil 1's voltage value, when temperature variation value and voltage variation value surpass microprocessor 4 safety value that sets up in advance, start quench emergency treatment module, microprocessor 4 passes through relay control circuit 8 control relay 10, the power supply circuit of switch-on heating plate 9 heats a plurality of segmentation coils 1, quench of superconducting coil is accelerated, avoid concentrating because of generating heat, cause local temperature to rise excessively high and damage superconducting coil.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (6)
1. A superconducting coil quench protection system, the superconducting coil comprising a plurality of segmented coils (1) connected two by two, characterized in that: the quench protection system comprises an active protection unit (2) and a passive protection unit (3), wherein the active protection unit (2) comprises a quench detection module and a quench emergency processing module, and the passive protection unit (3) comprises a resistor and a diode which are connected with a segment coil (1) in parallel; the quench detection module comprises a microprocessor (4), a plurality of temperature sensors (5) used for detecting temperature values of the segmented coils (1) and a plurality of voltage sensors (6) used for detecting voltage values of the segmented coils (1), wherein the temperature sensors (5) are arranged on one sides of the segmented coils (1), the voltage sensors (6) are connected with the segmented coils (1), the output ends of two adjacent voltage sensors (6) are connected with a voltage signal processing circuit (7), the input end of the microprocessor (4) is connected with the output end of the voltage signal processing circuit (7), and the output end of the microprocessor (4) is connected with a relay control circuit (8); the quench emergency processing module comprises a heating sheet (9) arranged on the outer surface of each segmented coil (1) and a relay (10) connected to a power supply loop of the heating sheet (9), and the coil of the relay (10) is connected with a relay control circuit (8).
2. A superconducting coil quench protection system as claimed in claim 1 wherein: the number of temperature sensors (5) corresponds to the number of segment coils (1).
3. A superconducting coil quench protection system as claimed in claim 1 wherein: the number of voltage sensors (6) corresponds to the number of segment coils (1).
4. A superconducting coil quench protection system as claimed in claim 1 wherein: the microprocessor (4) comprises a DSP microcontroller.
5. A superconducting coil quench protection system as claimed in claim 1 wherein: the voltage signal processing circuit (7) comprises a differential amplification circuit (7-1), an analog multiplication circuit (7-2), a low-pass filter circuit (7-3) and a comparison circuit (7-4) which are sequentially connected from a voltage sensor (6) to the microprocessor (4).
6. A superconducting coil quench protection system as claimed in claim 1 wherein: and glass fiber cloth for electrical insulation is arranged between the heating sheet (9) and the outer surface of the segmented coil (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229673.5U CN210865766U (en) | 2019-12-12 | 2019-12-12 | Superconducting coil quench protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229673.5U CN210865766U (en) | 2019-12-12 | 2019-12-12 | Superconducting coil quench protection system |
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| Publication Number | Publication Date |
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| CN210865766U true CN210865766U (en) | 2020-06-26 |
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| CN201922229673.5U Expired - Fee Related CN210865766U (en) | 2019-12-12 | 2019-12-12 | Superconducting coil quench protection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295892A (en) * | 2021-12-31 | 2022-04-08 | 东部超导科技（苏州）有限公司 | Superconducting current limiter coil redundancy design method based on quench detection |
| CN114566944A (en) * | 2022-03-12 | 2022-05-31 | 北京交通大学 | Self-triggering high-temperature superconducting coil active protection circuit and method |
| CN114783717A (en) * | 2022-06-17 | 2022-07-22 | 山东奥新医疗科技有限公司 | Magnetic resonance system and quench protection device of superconducting magnet thereof |
-
2019
- 2019-12-12 CN CN201922229673.5U patent/CN210865766U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295892A (en) * | 2021-12-31 | 2022-04-08 | 东部超导科技（苏州）有限公司 | Superconducting current limiter coil redundancy design method based on quench detection |
| CN114295892B (en) * | 2021-12-31 | 2024-09-27 | 东部超导科技（苏州）有限公司 | Superconducting current limiter coil redundancy design method based on quench detection |
| CN114566944A (en) * | 2022-03-12 | 2022-05-31 | 北京交通大学 | Self-triggering high-temperature superconducting coil active protection circuit and method |
| CN114783717A (en) * | 2022-06-17 | 2022-07-22 | 山东奥新医疗科技有限公司 | Magnetic resonance system and quench protection device of superconducting magnet thereof |
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Granted publication date: 20200626 Termination date: 20201212 |
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