CN211236675U - Calibration device for automatic tuning controller of arc suppression coil - Google Patents
Calibration device for automatic tuning controller of arc suppression coil Download PDFInfo
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- CN211236675U CN211236675U CN201921947140.4U CN201921947140U CN211236675U CN 211236675 U CN211236675 U CN 211236675U CN 201921947140 U CN201921947140 U CN 201921947140U CN 211236675 U CN211236675 U CN 211236675U
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- arc suppression
- suppression coil
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- tuning controller
- automatic tuning
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- 230000001629 suppression Effects 0.000 title claims abstract description 56
- 238000004804 winding Methods 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims abstract description 22
- 238000012795 verification Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses an arc suppression coil automatic tuning controller calibration device, which comprises an input line, a single-phase transformer, an adjustable capacitor, a test line, a voltage display module and a current display module; the single-phase transformer comprises a primary winding and a secondary winding, wherein an input line is electrically connected with two ends of the primary winding, and two ends of the secondary winding are respectively electrically connected with two ends of the adjustable capacitor; the test wires comprise fixed ends and test ends, the number of the test wires is two, the fixed ends of the two test wires are respectively and electrically connected with the two ends of the adjustable capacitor, and the test ends of the test wires are suspended; the voltage display module and the current display module are respectively electrically connected with the test wire. The calibration device for the automatic tuning controller of the arc suppression coil guarantees the accuracy of data measured by the automatic tuning controller, thereby guaranteeing that the automatic tuning line selection device can play an arc suppression role according to a preset mode, and guaranteeing the safety of a power grid.
Description
Technical Field
The utility model relates to an electrician's instrument field, a calibration equipment of arc suppression coil automatic tuning controller is specifically designed.
Background
With the continuous development of national economy and the continuous improvement of power systems, the safe operation and the power supply reliability of the power systems become more and more important, and the selection of a neutral point grounding mode is an important factor directly influencing the two indexes. With the enlargement of urban and rural power grids and the increase of cable outgoing lines, the capacitance current of the system to the ground is increased sharply, the fault current flowing through the single-phase grounded is large, electric arcs are not easy to extinguish, intermittent arc light grounding overvoltage is easy to generate, and the accident trip rate is obviously increased.
In order to solve the above problems, a resonant grounding mode is commonly adopted in national power grids, that is, an arc suppression coil is installed at a neutral point. When single-phase grounding occurs, the inductive current generated by the arc suppression coil compensates the capacitance current of the fault point, so that the residual current of the fault point is reduced, and the purposes of natural arc suppression, accident prevention and even accident elimination are achieved. The operation experience shows that the arc suppression coil has obvious effects on inhibiting intermittent arc overvoltage and ferromagnetic resonance overvoltage, reducing the accident trip rate of a circuit, and reducing personal casualties and equipment damage. Therefore, the power industry standard DL/T620 and 1997 "overvoltage protection and insulation coordination for alternating current electrical devices" specify: when the single-phase earth fault current is larger than I0A, an arc suppression coil is arranged at a neutral point of a system formed by 3-l 0kV overhead lines and all 35 and 66kV power grids; 3-l 0kV cable line, when the single-phase earth fault current is greater than 30A, the neutral point should be equipped with arc suppression coil.
Fig. 1 shows a schematic diagram of an XHK-ii-ZP + type arc suppression coil automatic tuning and grounding line selection complete device, wherein 2TM is a grounding transformer, 2LF is an on-load arc suppression coil, IZR and 2ZR are parallel medium resistors, 2R is an equivalent damping resistor, 2QS is a single-pole isolating switch, 2TV is a neutral point voltage transformer, 2TA is a neutral point current transformer, and a controller is assembled in a PK screen.
Fig. 2 shows a schematic view of the display screen of the XHK-ii-ZP + arc suppression coil auto-tuning and grounding selection kit in an operating state. Specifically, the controller may be provided with a display screen for displaying an electrical condition of the power grid, referring to fig. 3 of the drawings, the display content on the display screen includes parameters such as a shift adjustment position, a midpoint voltage, a midpoint current, a capacitance current, a residue, a detuning degree, and the parameters are data detected in the controller in real time; because the continuous operation time of this equipment is longer, and do not have the setting of inside check-up, if the data that leads to detecting because of the device is ageing or inaccurate goes wrong, then the arc extinction effect worsens, takes place the potential safety hazard easily.
SUMMERY OF THE UTILITY MODEL
In order to overcome current arc suppression coil autotuning and ground connection route selection integrated equipment's defect, the utility model provides an arc suppression coil autotuning controller calibration equipment guarantees autotuning route selection device measured data's accuracy to guaranteed that autotuning route selection device can play the arc extinction effect according to predetermineeing the mode, guaranteed the safety of electric wire netting.
Correspondingly, the utility model provides an arc suppression coil automatic tuning controller calibration device, which comprises an input line, a single-phase transformer, an adjustable capacitor, a test line, a voltage display module and a current display module;
the single-phase transformer comprises a primary winding and a secondary winding, the input line is electrically connected with two ends of the primary winding, and two ends of the secondary winding are respectively electrically connected with two ends of the adjustable capacitor;
the test wires comprise fixed ends and test ends, the number of the test wires is two, the fixed ends of the two test wires are respectively and electrically connected with the two ends of the adjustable capacitor, and the test ends of the test wires are suspended;
the voltage display module and the current display module are respectively electrically connected with the test wire.
In an alternative embodiment, the input voltage of the primary winding of the single-phase transformer is 200V to 240V.
In an alternative embodiment, the secondary winding of the single-phase transformer has an output voltage of 30V to 80V.
In an alternative embodiment, the capacitance value of the tunable capacitor ranges from 1 μ F to 10 μ F.
In an optional embodiment, the voltage display module includes a voltage acquisition circuit and a voltage display screen.
In an alternative embodiment, the current display module includes a current acquisition circuit and a current display screen.
In an optional implementation manner, the calibration device for the automatic tuning controller of the arc suppression coil further comprises a housing and a knob, the adjustable capacitor is arranged in the housing, and the knob penetrates through the surface of the housing to be connected with the adjustable capacitor.
In an alternative embodiment, the housing surface is marked with a capacitive scale on the periphery of the knob.
The utility model provides an arc suppression coil automatic tuning controller calibration equipment, this arc suppression coil automatic tuning controller calibration equipment can calibrate the data precision of arc suppression coil automatic tuning controller, guarantees the data measurement's of arc suppression coil automatic tuning controller accuracy to guaranteed that arc suppression coil automatic tuning controller can play the arc extinction effect according to predetermineeing the mode, guaranteed the safety of electric wire netting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an automatic tuning and grounding route selection complete set of an XHK-II-ZP + type arc suppression coil;
FIG. 2 is a schematic view of the display screen of the XHK-II-ZP + type arc suppression coil auto-tuning and grounding route selection kit in an operating state;
fig. 3 is a schematic structural diagram showing a calibration device of the arc suppression coil automatic tuning controller calibration device of the embodiment;
fig. 4 is a schematic diagram showing an operation structure of the calibration apparatus for the automatic tuning controller of the arc suppression coil according to the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 3 shows a schematic structural diagram of the calibration apparatus of the arc suppression coil automatic tuning controller of the present embodiment.
The utility model provides an arc suppression coil automatic tuning controller calibration equipment, including casing 1, input line 2, single phase transformer 5, adjustable electric capacity 6, knob 7, test wire 8, voltage display module 11 and current display module 10.
The shell 1 is used for fixing components and parts with high voltage of a calibration device of an automatic tuning controller of an arc suppression coil in the shell, a knob 7 is arranged on the surface of the shell 1 so as to be convenient to operate, and a voltage display screen of a voltage display module 11 and a current display screen of a current display module 10 are fixed on the surface of the shell 1 so as to be convenient to observe.
Specifically, the single-phase transformer 5 is disposed inside the housing 1. The single-phase transformer 5 comprises a primary winding 3 and a secondary winding 4, the input line 2 is electrically connected with two ends of the primary winding 3, and two ends of the secondary winding 4 are respectively electrically connected with two ends of the adjustable capacitor 6.
Optionally, the input line 2 can be connected to the mains, and equivalently, the input voltage of the primary winding of the single-phase transformer is 200V to 240V.
Accordingly, the output voltage of the secondary winding 4 of the single-phase transformer is optionally 30V to 80V.
Optionally, the adjustable capacitor 6 is disposed in the housing 1, the knob 7 is disposed on the surface of the housing 1, and the knob 7 penetrates through the surface of the housing 1 and is connected to the adjustable capacitor 6, so as to adjust the capacitance of the adjustable capacitor 6.
And two ends of the adjustable capacitor 6 are electrically connected with the secondary winding 4.
Optionally, the surface of the housing 1 is marked with capacitance scales on the periphery of the knob 7.
Optionally, the capacitance value of the adjustable capacitor 6 ranges from 1 μ F to 10 μ F.
Specifically, the test wire includes stiff end and test end, the quantity of test wire is two, is first test wire 8 and second test wire 9 respectively.
The fixed ends of the two test wires are respectively electrically connected with the two ends of the adjustable capacitor 6, and the test ends of the test wires are suspended and are electrically connected with an external arc suppression coil automatic tuning and grounding wire selection complete device.
Specifically, the voltage display module 10 and the current display module 11 are electrically connected to the test wire respectively.
The voltage display module 10 includes a voltage acquisition circuit and a voltage display screen. The voltage display module 10 is used to obtain the voltage between the two test lines (i.e., the voltage to ground) and display it on a voltage display screen on the surface of the housing.
The current display module comprises a current acquisition circuit and a current display screen. The current display module 11 is used for acquiring the current (namely, capacitance current) of the test wire and displaying the current on a current display screen on the surface of the shell.
Specifically, the voltage display module 10 may adopt an existing digital display voltmeter or a digital display voltage line, and the current display module may adopt an existing digital display ammeter or a digital display current measuring line.
With reference to the schematic diagram of the XHK-ii-ZP + arc suppression coil auto-tuning and grounding route selection complete equipment shown in fig. 1, the calibration device of the arc suppression coil auto-tuning controller provided by this embodiment works as follows:
fig. 4 is a schematic diagram showing the operation structure of the calibration device of the automatic tuning controller of the arc suppression coil.
When the automatic tuning controller calibration device for the arc suppression coil is applied to an XHK-II-ZP + type automatic tuning and grounding wire selection complete device, one single-phase line is selected at first, one of two test wires is connected to the rear end of a single-pole isolating switch (1QS or 2QS), and the other test wire can be grounded (equivalent). The controller is characterized in that 2TM is a grounding transformer, 2LF is an on-load arc suppression coil, 2ZR is a parallel medium resistor, 2R is an equivalent damping resistor, 2QS is a single-pole isolating switch, 2TV is a neutral point voltage transformer, 2TA is a neutral point current transformer, and the controller is assembled in a PK screen.
In specific implementation, the single-pole isolating switch is switched off, the input line of the arc suppression coil automatic tuning controller calibration device is electrified, the test line outputs voltage and capacitance current to the outside, and at the moment, the current of the current display screen of the calibration device is I1Voltage of the voltage display screen is U1According to the calculation principle of the capacitance current of the automatic tuning line selection device, the value of the capacitance current can be estimated as follows: i isC＝2πfc1uN(uNIs the system phase voltage); the numerical values are compared with the midpoint voltage, midpoint current and capacitance current displayed by the graphic menu of the automatic tuning line selection device, and whether the data sampling and calculation of the arc suppression coil controller are correct or not can be verified.
In addition, each gear of the arc suppression coil corresponds to an inductive current, corresponding capacitive current can be calculated according to data provided by the system, then capacitance is calculated, and then whether the gear shifting function of the arc suppression coil controller is correct or not can be verified by adjusting a capacitance adjusting knob of the checking device to a corresponding value.
The embodiment of the utility model provides an arc suppression coil automatic tuning controller calibration equipment, this arc suppression coil automatic tuning controller calibration equipment utilizes the circuit state of fault current of flowing through behind the single-phase ground connection of commercial power input simulation, and utilize the voltage sign and the accuracy of the acquisition data of electric current sign calibration arc suppression coil controller of arc suppression coil automatic tuning controller calibration equipment, can calibrate the arc suppression coil controller, in order to guarantee the normal of arc suppression coil controller operation, have good practicality.
The calibration device for the automatic tuning controller of the arc suppression coil and the grounding transformation complete equipment provided by the embodiment of the utility model are described in detail, the principle and the implementation mode of the utility model are explained by applying specific examples, and the explanation of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. An arc suppression coil automatic tuning controller calibration device is characterized by comprising an input line, a single-phase transformer, an adjustable capacitor, a test line, a voltage display module and a current display module;
the single-phase transformer comprises a primary winding and a secondary winding, the input line is electrically connected with two ends of the primary winding, and two ends of the secondary winding are respectively electrically connected with two ends of the adjustable capacitor;
the test wires comprise fixed ends and test ends, the number of the test wires is two, the fixed ends of the two test wires are respectively and electrically connected with the two ends of the adjustable capacitor, and the test ends of the test wires are suspended;
the voltage display module and the current display module are respectively electrically connected with the test wire.
2. The arc suppression coil auto-tuning controller verifying apparatus as claimed in claim 1, wherein an input voltage of a primary winding of said single-phase transformer is 200V to 240V.
3. The arc suppression coil automatic tuning controller verifying apparatus as set forth in claim 2, wherein an output voltage of a secondary winding of said single-phase transformer is 30V to 80V.
4. The arc suppression coil automatic tuning controller verifying apparatus as claimed in claim 1, wherein a capacitance value of said adjustable capacitor ranges from 1 μ F to 10 μ F.
5. The arc suppression coil auto-tuning controller calibration device of claim 1, wherein said voltage display module comprises a voltage acquisition circuit and a voltage display screen.
6. The arc suppression coil auto-tuning controller calibration device of claim 1, wherein said current display module comprises a current acquisition circuit and a current display screen.
7. An arc suppression coil automatic tuning controller verifying unit as claimed in any one of claims 1 to 6, further comprising a housing and a knob, wherein said adjustable capacitor is disposed in said housing, and said knob is connected to said adjustable capacitor through a surface of said housing.
8. An arc suppression coil automatic tuning controller verification device as claimed in claim 7 wherein said housing surface is marked with capacitive graduations on the periphery of said knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947140.4U CN211236675U (en) | 2019-11-12 | 2019-11-12 | Calibration device for automatic tuning controller of arc suppression coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921947140.4U CN211236675U (en) | 2019-11-12 | 2019-11-12 | Calibration device for automatic tuning controller of arc suppression coil |
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| CN211236675U true CN211236675U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921947140.4U Expired - Fee Related CN211236675U (en) | 2019-11-12 | 2019-11-12 | Calibration device for automatic tuning controller of arc suppression coil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009402A (en) * | 2021-02-26 | 2021-06-22 | 国网湖南省电力有限公司 | Calibration method, calibration device and calibration system for arc suppression coil measurement and control system |
| CN113009403A (en) * | 2021-02-26 | 2021-06-22 | 国网湖南省电力有限公司 | Calibration method, calibration device and calibration system of capacitance current tester |
| CN113341246A (en) * | 2021-05-24 | 2021-09-03 | 国网陕西省电力公司西安供电公司 | Arc suppression coil testing device and method based on capacitance calibration |
-
2019
- 2019-11-12 CN CN201921947140.4U patent/CN211236675U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009402A (en) * | 2021-02-26 | 2021-06-22 | 国网湖南省电力有限公司 | Calibration method, calibration device and calibration system for arc suppression coil measurement and control system |
| CN113009403A (en) * | 2021-02-26 | 2021-06-22 | 国网湖南省电力有限公司 | Calibration method, calibration device and calibration system of capacitance current tester |
| CN113341246A (en) * | 2021-05-24 | 2021-09-03 | 国网陕西省电力公司西安供电公司 | Arc suppression coil testing device and method based on capacitance calibration |
| CN113341246B (en) * | 2021-05-24 | 2024-02-06 | 国网陕西省电力公司西安供电公司 | Arc suppression coil testing device and method based on capacitance calibration |
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Granted publication date: 20200811 |